[Technology]
It relates to seonghyeongtan and a method of manufacturing the same. More specifically, it relates to seonghyeongtan and a method of manufacturing and has excellent strength nyaenggan applying a binder having a hydroxy methoxy.
- that the technical background of the invention;
Smelting reduction process in which iron ore is charged when the molten iron ores in a molten to be / melt using gasification to the gasification melting the reduced iron ore and the reducing furnace, the seonghyeongtan as a heat source for melting the iron ore in the melter-gasifier. Here, the reduced iron is then melted in the melter-gasifier, after being converted into molten iron and slag discharged to the outside. The seonghyeongtan charged into the melter-gasifier to form a coal packed-bed.
Oxygen is by burning the coal seam after the conductive layer blown through the tuyere installed in the melter-gasifier generates the combustion gas. Combustion gas is converted into a high temperature reducing gas while rising through the coal packed-bed. A reducing gas at a high temperature is

Is discharged out of the melter-gasifier is supplied as a reducing gas in the reducing furnace.

Seonghyeongtan used in the smelting reduction process has been put into the melter-gasifier to provide the required amount of heat to the molten reduced iron. Seonghyeongtan is thereby securing the permeability and barrel-component in the melter-gasifier to pass smoothly in particular a gas and a liquid. To do this, it must maintain seonghyeongtan within the melter-gasifier to the large particle size. In this case, it is possible to increase the reduction banung and heat transfer efficiency for the reduced iron by seonghyeongtan.

Thus, the manufacturing seonghyeongtan must be strong in mechanical cheunggyeok during transport. Seonghyeongtan can secure the air-permeable and liquid tube of the melter-gasifier to the above described hot-strength should be excellent when put into a dome of the melter-gasifier loocrc.

Adding a binder such as molasses as a binder in the manufacture seonghyeongtan to secure excellent strength and increase the strength. However, if sufficient strength to secure the use of much more of a servant, and is prepared to seonghyeongtan price rises, causing my attachment manufacturing capacity utilization fell to degrade the quality.

Especially when using molasses as a binder, by the addition of limestone or the like as a curing agent kalseum ions are nyaenggan strength was expressed by the acid salt "banung per made of coordinate bonds at basic conditions. However, a large amount of ion kalseum

Is introduced into the limestone are causing the need to remove the kalseum in iron making processes. [Contents of the present invention;

[Problems to be solved by one

While excellent in strength nyaenggan applying a binder having a group to provide a hydroxy-methoxy seonghyeongtan and a method of manufacturing the same.

[Solving means of a problem]

As reduced iron is connected to the melter-gasifier is charged, and the melter-gasifier, a method manufacturing a seonghyeongtan that in an apparatus for manufacturing molten iron containing the reducing to provide a reduced iron rapidly heated is charged to the dome of the melter-gasifier, the present invention seonghyeongtan method of manufacturing according to one embodiment of the steps of preparing a common binder compounds combined for common step, a cross-linking agent having a binder and two or more carboxyl groups with a methoxy group to provide a pulverized coal; Pulverized coal, and the binder combined common compounds common to prepare a combined carbon; And forming a combined carbon to a step for producing a seonghyeongtan.

100 to 300 the seonghyeongtan ° the step of heat treatment at C may further include. In the step of forming the blended carbon to produce an seonghyeongtan 100 to 300 ° can be molded at a temperature of C.

A binder having a group is the methoxy hydroxy hydroxypropylmethylcellulose

Cellulose (Hydroxypropyl Methyl cel lulose, HPMC), hydroxyethyl agarose (Hydroxyethyl Methyl cel lulose, HEMC) methyl saelreul, methyl

Agarose in selreul (Methyl Cel lulose, MC), lignin, lignin sulfonate, a pectin, or a combination thereof.

A crosslinking agent having at least two carboxyl groups are dicarboxylic acids (di carboxyl ic acid), tricarboxylic acid (tr i carboxyl ic acid), polyacrylic acid may include (poly acryl ic acid), or a combination thereof.

A crosslinking agent having at least two carboxyl groups may be represented by the following general formula (1).

Formula 1

X-(C00H)n

(In Formula 1 X is a single bond; any two from or an alkyl group or an aryl group; a divalent connecting group selected from an alkylene group, an arylene group, a carbonyl group, -0-, -S-, -ΝΉ-, or a combination thereof trivalent linking group removed a hydrogen atom; and, n is 2 or 3).

A crosslinking agent having a carboxyl group of a second couple of the oxalic acid (ethanedioic acid), malonic acid (propanedioic acid), succinic acid (butanedioic acid),

Glutaric acid (pentanedioic acid), adipic acid (hexanedioic acid),

피멜산 (heptanedioic acid) , 수베르산 (octanedioic acid)，

Azelaic acid (nonanedioic acid), sebacic acid (decanedioic acid),

프탈산 (benzene-l,2—dicarboxylic acid, o-phthal ic acid) ,

이소프탈산 (benzene_l,3— dicarboxyl ic acid, m-phthal ic acid) ,

Terephthalic acid (benzene_l, 4_dicarboxyl ic acid, p-phthal ic acid), citric acid may include (citric acid), or a combination thereof.

A crosslinking agent having at least two carboxyl groups may include succinic acid, citric acid or combinations thereof.

In preparing a theta haptan, combined shot is parts binder, 0.1 to 5% by weight, the crosslinking agent of 0.1 to 5 parts by weight, having at least two carboxyl groups ¾ », water 1 to 15% and the balance weight having a methoxy group can include fine coal .

In preparing a formulation Tan, combined bullet may comprise a pulverized coal as part of 0.5 to 3 parts by ¾>, water 5 to 10% by weight and a glass cross-linking agent having a binder, 0.5 to 3% by weight, two or more carboxyl groups with a time the meteuk have/

Seonghyeongtan in accordance with one embodiment of the present invention comprises a binder, a crosslinking agent, water, and fine coal having at least two carboxyl groups having a hydroxy methoxy.

A binder having a group are methoxy hydroxy binder having a methoxy group is hydroxypropylmethylcellulose Sal roll agarose (Hydroxypropyl Methyl cellulose, HPMC), hydroxyethyl methyl saelreul to agarose (Hydroxyethyr Methyl cellulose, HEMC), methyl

Sal roll agarose may include (Methyl Cellulose, MC), lignin, lignin sulfonate, a pectin, or a combination thereof.

A crosslinking agent having at least two carboxyl groups may include a dicarboxylic acid (dicarboxylic acid), tricarboxylic acid (tricarboxylic acid), polyacrylic acid (poly acrylic acid), or a combination thereof.

A crosslinking agent having two or more carboxyl groups may comprise a compound represented by the following general formula (1).

Formula 1

X-(C00H)n

(In Formula 1 X is a single bond; any two from or an alkyl group or an aryl group; a divalent connecting group selected from an alkylene group, an arylene group, a carbonyl group, -0-, -S-, -NH-, or a combination thereof trivalent linking group removed a hydrogen atom; and, n is 2 or 3).

A crosslinking agent having at least two carboxyl groups are oxalic acid (ethanedioic acid), malonic acid (propanedioic acid), succinic acid (butanedioic acid),

Glutaric acid (pentanedioic acid), adipic acid (hexanedioic acid),

피멜산 (heptanedioic acid) , 수베르산 (octanedioic acid) ,

Azelaic acid (nonanedioic acid), sebacic acid (decanedioic acid),

프탈산 (benzene-l, 2一 dicarboxylic acid, o-phthal ic acid) ,

이소프탈산 (benzene一 1,3— dicarboxyl ic acid, m-phthal ic acid) ,

Terephthalic acid (benzene_l, 4_dicarboxyHc acid, p-phthal ic acid), citric acid

It may include (citric acid), or a combination thereof.

A crosslinking agent having at least two carboxyl groups may include succinic acid, citric acid or combinations thereof.

Binders having meteuk time from 0.1 to 5 parts by weight of the at least two

0.1 to 5 weight percent cross-linking agent having a carboxyl group, may include 1 to 15 parts by weight water ¾ »and fine coal portion cup.

Binder, 0.5 to 3 parts by weight of the two or more having a methoxy hydroxy

Increased from 0.5 to 3% cross-linking agent having a carboxyl group, it may comprise a moisture of 5 to 10 parts by weight pulverized coal%, and glasses.

A crosslinked product made by crosslinking banung of the cross-linking agent having a binder and two or more carboxyl groups with a meteuk time may further include.

【Effects of the Invention】 .

According to one embodiment of the present invention can be prepared with excellent seonghyeongtan nyaenggan strength.

Further, according to one embodiment of the present invention because the K component in the binder does not cause pipe blockages.

Further, according to one embodiment of the present invention does not use the calcium oxide or calcium hydroxide C0 2 is lowered in reactivity is improved in the efficiency of coal fuel.

Further, according to one embodiment of the present invention it is improved economics over conventional binders to minimize binder blend ratio.

[Brief description of drawings]

1 is a schematic flow diagram of a method of manufacturing seonghyeongtan according to one embodiment of the present invention.

Figure 2 is a schematic view of an apparatus for manufacturing molten iron using a molding ethanol production in FIG.

Figure 3 is a schematic view of another apparatus for manufacturing molten iron using the above-prepared seonghyeongtan in FIG.

- specific information for carrying out the invention;

First, second and third & quot; and the like, but are used to describe the various parts, components, regions, layers and / or sections are not limited thereto. These terms are only used to distinguish it from any part, component, region, layer or section, all other parts, component, region, layer or section. Thus, the first part, component, region, layer or section described below may be referred to as the second part, component, region, layer or section without departing from the scope of the invention. Terminology used herein is simply intended to refer to a specific embodiment and are not intended to limit the present invention. As used herein, the singular forms also include the plural forms a phrase that does not represent a meaning clearly contrary in this way. The meaning of "comprising" as used herein is the presence of specific properties, regions, integers, steps, operations, and embodying the elements and / or elements, other features, regions, integers, steps, operations, elements and / or components or It does not exclude the addition.

But not otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood to mean that parties of ordinary skill in the art to which this invention belongs. Average pre-defined terms to be used are added interpreted to have a meaning consistent with the relevant technical literature and the present disclosure, and unless defined

Not to be construed as ideal or very official meaning.

Except where "substituted" means a separate defined herein, C1 to C30 alkyl group; C1 to C10 alkylsilyl group; C3 to C30 cycloalkyl group; C6 to C30 aryl group; C2 to C30 heteroaryl group; C1 to C10 alkoxy group; Alkyl group in C1 to C10, such as trifluoro methyl group to group, trifluoromethyl fluoro; or

It means substituted with a cyano group.

Herein, or unless there is a "combinations thereof" is defined a separate, more than one substituent is bonded to the linking group, it means that there is more than one substituent is bonded by condensation.

In this specification, "alkyl (alkyl) group" means, unless otherwise defined, any alkenyl group or does not contain an alkynyl "saturated alkyl (saturated alkyl) group"; or at least one alkene (alkene) group, or an alkynyl (alkyne ) it is meant to include both the "unsaturated alkyl (unsaturated alkyl) group", which comprises a. The "Al alkene group '' is at least two carbon atoms at least one carbon-carbon double bond means a substituent group consisting of, and" - means a substituent consisting of a carbon-carbon triple bond alkynyl group "self least two carbon atoms at least one carbon and the alkyl groups minutes may be branched, straight chain, or cyclic.

The alkyl group may be an alkyl group of C1 to C20, can be more specifically, the intermediate group, higher alkyl C11 to C20 lower alkyl, C7 to C10 of C1 to C6.

For example, C1 to C4 alkyl group is meant the presence of 1 to 4 carbon atoms in the alkyl chain, which methyl, ethyl, propyl, iso-butyl, sec- butyl, and t- butyl-propyl, n- butyl, iso It indicates that selected from the group consisting of. Typical alkyl groups include methyl, ethyl, propyl. Isopropyl, butyl, isobutyl, t- butyl, pentyl, nuclear group, ethenyl group, propenyl group, butenyl group, a cyclopropyl group, a cyclobutyl group, include a cyclopentyl group, a cycloalkyl group nucleus.

With reference to the accompanying drawings and described in detail so that this can be easily implemented by those of ordinary skill in the present invention 0 the art with respect to the embodiment of the invention. However, the invention is not to be implemented in many different forms and limited to the embodiments set forth herein.

1 shows a flow diagram of a method of manufacturing seonghyeongtan in accordance with one embodiment of the invention. A flow chart of a method of manufacturing seonghyeongtan of Figure 1 is merely to illustrate the invention, but the invention is not limited to this. Therefore, it is possible to variously modify the production method of the seonghyeongtan.

1, the production method of the seonghyeongtan provides a pulverized coal step (S10), Step (S20) to common manufacturing a binder common compound were combined a crosslinking agent having a binder and two or more carboxyl groups with a methoxy group, to. Coal and common summing the binder common compound comprises the step (S40) for molding a step (S30), and blending carbon for producing a formulation to prepare a carbon seonghyeongtan. In addition, the production method of seonghyeongtan if necessary may further include other steps,

First, in the step (S10) and it provides a pulverized coal. Here, the pulverized coal will crushed coal, the coal is generally in accordance with the tansobun about tanhwado

60% peat, 70% of the ahtan and brown coal, about 70% to 80% of the bituminous ah, about 80% to 90% bituminous coal, anthracite coal is separated by 90% or more. The type of coal used here is not particularly limited and can be combined using a single common Ammo or different types of coal. The particle size of the pulverized coal is preferably constant to reduce variation in the quality and, as a specific reference, the particle size is less than 3mm can use a fine coal having 80wt% or more and a particle size less than 2 隱 ​​is 90wt% or more particle size distributions. In a pulverized coal it may be inevitably contained, and the water may contain a certain amount, pulverized coal 100 parts by weight of the moisture increase of 1 to 15 with respect to the unit. Pulverized coal is relative to 100 parts by weight produced seonghyeongtan> can be provided so that it contains 90 to 99% by weight.

Next, by adding the cross-linking agent having a binder and two or more carboxyl groups having a hydroxy methoxy] In step (S20) common to prepare a binder common compound.

In an embodiment of the present invention is a methoxy group (C¾-0-C-)

Carboxyl (¾ 00Η case meet with) the methanol is produced by water banung

The esterification (ester fi cat ion) is used that takes place. Methanol

Vaporization point to vaporize methanol in the high heat conditions than (b .p., Boi l ing point), thereby continually inducing the banung and thereby increase the crosslinking efficiency, depending. The seonghyeongtan according to one embodiment of the present invention according to is able to express a high strength nyaenggan. For example, the binder is HEMC, if the crosslinking agent is citric acid, and to a crosslinked product formed by banung as banung expression, is presented the crosslinking efficiency increases further.

1]

Hereinafter will be described in more detail for the binder and the crosslinking agent.

" Binder has a meteuk time. Specific examples of the binder may include agarose-based compound, a lignin-based compound or compounds in molasses selreul. More specifically, cells roll as agarose-based compound, hydroxypropylmethylcellulose

Selreul to agarose (Hydroxypropyl Methyl cel lulose, HPMC), hydroxyethyl methyl cellulose (Hydroxyethyl Methyl cel lulose, HEMC), or methyl

It may include agarose (Methyl Cel lulose, MC) to selreul. As lignin-based compounds may include lignin or lignin sulfonate. As a molasses-based compound may include a pectin. As a binder may include a binder of a single type, or may comprise a combination of two or more kinds of binder. The binder may be mixed with 0.1 to 5% by weight relative to the seonghyeongtan 100% increase is made. If the amount of the binder is too small, it can not meet the requirements nyaenggan strength. Even increase the amount of binder shall nyaenggan strength is not continuously improved, the amount of binder

Too often, it is a disadvantage in the face of calories seonghyeongtan. Therefore, to control the amount of the binder in the aforementioned range. Seonghyeongtan is made in more detail

Based on 100% by weight it can be heunhap 0.5 to 3% by weight.

Cross-linking agent has two or more carboxyl groups. The crosslinking agent serves to increase the crosslinking efficiency and crosslinking the above-mentioned binder. Specifically

D ^ ( "dicarboxylic acid (dicarboxyl ic acid), tree ^] , it may include a dicarboxylic acid (tr icarboxyl ic acid), polyacrylic acid (poly acrylic acid) or a combination thereof. Dicarboxylic acid More specifically, it may include compounds represented by the general formula (1) as the (dicarboxylic acid), tricarboxylic acid (tr icarboxyl ic acid).

X-(C00H)n

(In Formula 1 X is a single bond; any two from or an alkyl group or an aryl group; an alkylene group, an arylene group, a carbonyl group, - a divalent connecting group selected from, -NH-, or a combination of both-0-, -S trivalent linking group removed a hydrogen atom; and, n is 2 or 3).

For example, if the crosslinking agent is a dicarboxylic sanil, oxalic acid (ethanedioic acid), malonic acid (propanediol c acid), succinic acid (butanedioic acid),

Glutaric acid (pentanedioic acid), adipic acid (hexanedioic acid),

피멜산 (heptanedioic acid) , 수베르산 (octanedioic acid) ,

Azelaic acid (nonanedioic acid), sebacic acid (decanedioic acid),

프탈산 (benzene-l,2_dicarboxylic acid, o-phthal ic acid) ,

Isophthalic acid may be include (benzene_l, 3 eu dicarboxyl ic acid, m-phthal ic acid) or terephthalic acid (benzene- 1,4- dicarboxylic acid, p-phthalic acid) '. If the crosslinking agent is tricarboxylic sanil may include citric acid (citric acid). More specifically, the crosslinking agent may include succinic acid, citric acid or combinations thereof. And it can contain a crosslinking agent as a crosslinking agent of a single kind, and may include a combination of two or more kinds of crosslinking agents. The crosslinking agent may be heunhap from 0.1 to 5% by weight relative to 100% by weight seonghyeongtan produced. When the amount of the crosslinking agent is too small, it can be minimal to increase cross-linking efficiency. Nor even increase the amount of crosslinking agent is not nyaenggan strength continuously improve, if the amount of crosslinking agent is too large, it becomes disadvantageous from the surface of the heat seonghyeongtan. Therefore, the amount of the crosslinking agent in a range jyansul

It can be adjusted. Seonghyeongtan respect to 100 parts by weight and more specifically can be prepared by heunhap 0.5 to 3% by weight. Common binder compound has a water may contain some heunhap to facilitate the binder and the crosslinking agent. Specifically, there can be included from 1 to 15 parts by weight of water based on 100 parts by weight of a binder common compound.

Comes back again to Figure 1, the step (S30) in to prepare a fine coal and a binder formulation Tan common combined compounds common.

Combined carbon is part binder 0.1 to 5 cross-linking agent 0.1% to 5%, moisture 1% to 15% and the balance by weight having a% by weight and at least two carboxyl groups having a methoxy hydroxy can include fine coal. Weight limitation reasons of the binder, a crosslinking agent and fine coal is the same as that described above, a description thereof will be omitted redundant. Water is derived from the water that is added to facilitate heunhap in water or step (S20) contained in the pulverized coal inevitably in step (S10). More specifically, carbon is blended binder 0.5 to 3 wt ¾>, 2 or more having a time meteuk

0.5 to 3% by weight cross-linking agent having a carboxyl group, may comprise a moisture of 5 to 10 parts by weight pulverized coal%, and glasses.

Comes back again to Figure 1, in the step (S40) is prepared by molding the compounded seonghyeongtan burnt.

Figure 1 may be not shown, to charge the common compounds between ssangreul rotating in mutually opposite directions to produce a pocket form, or the form of a strip seonghyeongtan. As a result, it is possible to manufacture the seonghyeongtan having excellent hot strength and the strength nyaenggan. Step (S40) is from 100 to 300 ° can be molded at a temperature of C. When molding in the above-mentioned range, in the mail hydroxy group and a crosslinking agent in the binder

The carboxyl group is crosslinked banung can be crosslinked to form. Nyaenggan the strength is 1 to 5 minutes in a state pressurized to maintain in order to further improve. At this time, as the removed gaseous component, such as the methanol produced by the cross-linking reaction, the strength of the nyaenggan seonghyeongtan be further improved.

After the step (S40), it may further comprise the step of heat treatment at 30C to 100 C for seonghyeongtan. By further comprising the step of drying by reacting US banung binder and cross-linking agent present in the seonghyeongtan to form a crosslinked product of seonghyeongtan

The cold strength can be further improved. Specifically, the step of heat treatment is 5 minutes

To can be carried out for 120 minutes.

Seonghyeongtan in accordance with one embodiment of the present invention comprises a cross-linking agent, water and fine coal with a binder, the two or more of a carboxyl group with a methoxy group. For the composition of pulverized coal, a binder, a crosslinking agent and water in seonghyeongtan the same as the manufacturing method of the above-described seonghyeongtan to omit repeated descriptions. Seonghyeongtan in accordance with one embodiment of the present invention may further comprise a crosslinked product made by crosslinking reaction of the crosslinking agent having a binder and two or more carboxyl groups with a methoxy group. If further comprises a crosslinked, a portion derived from a crosslinking agent having two or more carboxyl groups and a part derived from a binder having a meton time in the crosslinked product is calculated as the weight of the respective binder, and crosslinking agent.

Figure 2 schematically illustrates an apparatus for manufacturing molten iron 100 using a seonghyeongtan prepared in Fig. Fig structure of an apparatus for manufacturing molten iron 100 of the second will only serve to illustrate the invention, but the invention is not limited to this. Therefore, it is possible to modify the apparatus for manufacturing molten iron 100 in FIG. 2 in a variety of forms.

2 an apparatus for manufacturing molten iron 100 includes a (10) and reducing the melter-gasifier 20. In addition it may include other devices, if necessary.

A reduction (20) is then reduced iron ore is charged. Iron ore is charged into the reduction reactor 20 is made of a reduced iron and after the pre-drying by passing through the reduction reactor 20. A reduction reactor 20 is accepted as a conductive layer type reduction, the reducing gas supplied from the melter-gasifier 10 to form a conductive layer therein.

FIG seonghyeongtan manufactured by the method of Figure 1 is so charged into the melter-gasifier 10, the inside of the melter-gasifier 10, the coal packed bed is formed.

The upper portion of the melter-gasifier 10 is formed with a deumbu 101. In other words,

This wide space is formed than the other part of the melter-gasifier 10, and here, there are a reducing gas at a high temperature. Therefore seonghyeongtan is charged to deumbu 101 by the reducing gas in the Ko Un can be easily differentiated. However seonghyeongtan one produced by the process of Figure 1 does not fall, because of the differentiation in the dome of a high hot strength, the melter-gasifier 10 and to the lower portion of the melter-gasifier 10. Char produced by the pyrolysis of banung seonghyeongtan is banung oxygen and heat supplied through the tuyere (30) to move to the lower portion of the melter-gasifier 10. As a result, the seonghyeongtan

It can be used as a heat source to maintain the melter gasifier 10 at a high temperature. On the other hand, in the char is because it provides a breathable, the reduced iron supplied from the large amount of gas and reduced to 20 generated in the lower portion of the melter-gasifier 10 to the melter-gasifier 10

Penetrating more easily and seams can be uniformly passed.

In addition to the above if necessary seonghyeongtan the lumped carbonaceous materials, or coke may be charged into the melter-gasifier 10. The outer wall of the melter-gasifier 10 is provided to blow oxygen to install the tuyere (30). Oxygen forms a raceway is taken into the coal layer. Seonghyeongtan is burned in the raceway can generate a reducing gas.

Figure 3 schematically shows an apparatus for manufacturing molten iron 200 with seonghyeongtan manufactured Fig. The structure of the apparatus for manufacturing molten iron 200 in FIG. 3 will only serve to illustrate the invention, but the invention is not limited to this. Therefore, it is possible to manufacture molten irons transform unit 200 in various forms in FIG. The structure of the apparatus for manufacturing molten iron 200 structure is an apparatus for manufacturing molten iron 100 in FIG. 2 of Fig. 3 and

It is because, in the same parts the same reference numerals, and a detailed description thereof will be omitted.

3, the molten iron manufacturing apparatus 200 includes the melter-gasifier 10, a reducing (22), reduced iron compressor 40 and the compressed reduced iron reservoir (50). Here, the compression reduced iron storage tank 50 may be omitted.

Manufactured seonghyeongtan are charged into the melter-gasifier 10. Here, seonghyeongtan is generated a reducing gas in the melter-gasifier (10) to generate a reducing gas is supplied to the fluidized-bed reduction reactor. Fine iron ores are supplied to a plurality of reduction with a fluidized bed 22, as the flow by the reducing gas supplied to the 22 to the reduction from the melter-gasifier 10 is made of the reduced iron. Reduced iron is stored in the compressed reduced iron storage tank 50 after being compressed by the compression system reduced iron (40). Compressed reduced iron is supplied to the melter-gasifier reduced iron from the compression reservoir (50) (10)

It is melted in the melter-gasifier 10. Seonghyeongtan is supplied to the melter-gasifier 10, so chwaro sides with an air-permeable, compressed and a large amount of gas generated in the lower portion of the melter-gasifier 10, reduced iron is more easily and uniformly to the coal packed bed in the melter-gasifier 10 the pass can be produced molten iron of good quality.

In the following the invention will be described in more detail through experimental examples ol. This experimental example is merely to illustrate the invention, but the invention is not limited to this.

Experimental Example 1

Have a mean aqueous phase was prepared with the coal 16kg of at least 90% less than 3 瞧 particle size as pulverized coal. Pulverized coal was adjusted to a moisture content based on 100 parts by weight about 11 parts by weight.

Pulverized coal in HEMC 1 part by weight of citric acid and 1 part by weight, the blending ratio relative to 100 parts by weight of the combined common to prepare a binder common compound.

A pulverized coal and a binder to prepare a compound common carbon were charged into a mixer combination. Blending carbon with a mold by compression at a pressure of 1000kg to prepare a cylindrical seonghyeongtan of having high with a diameter of 20 10醒醒. The seonghyeongtan 180 ° were subjected to heat treatment at C 10 minutes.

To measure the strength of seonghyeongtan by the following evaluation methods are summarized in Table 1 below.

Experimental Example 2

Citric acid was performed, and is in the same manner as in Experiment Example 1, except that 0.2 parts by weight of the combined common.

To measure the strength of seonghyeongtan by the following evaluation methods are summarized in Table 1 below.

Experimental Example 3

Except that the sum of citric acid 2 parts by weight of traces was performed in the same manner as in Experimental Example 1.

To measure the strength of seonghyeongtan by the following evaluation methods are summarized in Table 1 below.

Experiment 4

Was conducted in the same manner as in Experimental Example 1, but the combined citric acid instead of 1 part by weight of traces.

To measure the strength of seonghyeongtan by the following evaluation methods are summarized in Table 1 below.

Example 5

Was conducted in the same manner as in Experimental Example 1, but the combined citric acid instead of 2 parts by weight of traces.

To measure the strength of seonghyeongtan by the following evaluation methods are summarized in Table 1 below.

Experimental Example 6

In the same manner as in Experiment Example 1 to prepare a binder common compound.

A pulverized coal and a binder to prepare a compound common carbon were charged into a mixer combination. Blending carbon with a mold by compression at a pressure of 1000kg to prepare a cylindrical seonghyeongtan of a height and a diameter 10 of 20瞧隱. At this time, the temperature of the mold 180 ° was adjusted to C, and held for 5 minutes at a state of applying a pressure.

To measure the strength of seonghyeongtan by the following evaluation methods are summarized in Table 1 below. - "

Comparative Example 1

Molasses 10 with respect to 100 parts by weight of the same coal as in Experimental Example 1 part by weight, and

The combined CaO 2.7 parts by weight of common to prepare a binder common compound.

A pulverized coal and a binder to prepare a compound common carbon were charged into a mixer combination. Blending carbon with a mold by compression at a pressure of 1000kg to prepare a cylindrical seonghyeongtan of a height and a diameter 10 of 20 隱 醒.

To measure the strength of seonghyeongtan by the following evaluation methods are summarized in Table 1 below.

Comparative Example 2

With the exception that no citric acid heunhap was performed in the same manner as in Experimental Example 1.

. To measure the strength of seonghyeongtan by the following evaluation methods are summarized in Table 1, eu.

Strength evaluation tests

Experimental Examples 1 to 4 and Comparative Examples 1 and in the seonghyeongtan immediately to 30, respectively, phases produced in the second after 1 hour, and then 24 hours at room temperature, 90 ° and then for 10 minutes by C-dried or 150 ° after 10 minutes in C dry the lower is fixed, and measuring the maximum load until destruction by pressing at the top at a constant rate was shown by average value.

Experiment result

It shows a summary in Table 1 below the results of seonghyeongtan according to the above-mentioned Experimental Examples 1 to 4 and Comparative Examples 1 and 2.

[Table 1]

As indicated in Table 1, the strength of the seonghyeongtan prepared in Experimental Examples to determine the significantly superior as compared to Comparative Example 1. Fig. Also, if you are using the correct amount of cross-linking agent, a strength than the case of using a binder, it can be seen that can be further improved.

The present invention is not limited to the above embodiments may be made in many different forms, one of ordinary skill in the art without changing the technical spirit or essential features of the present invention other specific forms it will be appreciated that it can be carried out with. Thus the embodiments described above are only to be understood as illustrative and non-restrictive in every respect.

[Description of marks] '

10. The melter-gasifier to the

20, 22. The reduction in

30. tuyeres ,

40. The reduced iron compression apparatus 50. Compression reduced iron reservoir

100, 200. The apparatus for manufacturing molten iron

101. deumbu

[Claims]
[Claim 1]
The reduced iron is charged into the melter-gasifier, and
And connected to said melter-gasifier, the reducing furnace to provide the reduced iron
In the apparatus for manufacturing molten iron including a a method for manufacturing a seonghyeongtan heated rapidly it is charged to the dome of the melter-gasifier to,
Providing a pulverized coal,
The combined cross-linking agent having a binder and two or more carboxyl groups with a methoxy group common to prepare a common binder compound;

The pulverized coal and dangyeo for preparing a formulation Tan common summing the Binder common compound 1;

Preparing a seonghyeongtan by molding the compounded carbon

The method of seonghyeongtan containing.

[Claim 2]

According to claim 1,

The seonghyeongtan 100 to 300 ° method for producing a seonghyeongtan further comprising the step of heat treatment in a C.

[Claim 3]

Crab according to claim 1, wherein

The combination formed by the carbon in the step of preparing a seonghyeongtan 100 to 300 ° method for producing a seonghyeongtan molding at a temperature of C.

[Claim 4]

According to claim 1,

As the binder having the meteuk time is hydroxypropylmethylcellulose selreul agarose (Hydroxypropyl Methyl cel lulose, HPMC), agarose as hydroxyethyl methyl selreul (Hydroxyethyl Methyl cel lulose, HEMC), agarose (Methyl Cel lulose, MC) methyl selreul , lignin, lignin sulfonate, a pectin or a method for producing this, seonghyeongtan comprising the combination of.

[5.]

According to claim 1,

A crosslinking agent having at least two carboxyl groups is the dicarboxylic acid (dicarboxylic acid), tricarboxylic acid (tricarboxylic acid), polyacrylic acid (poly acrylic acid) or a method of producing a seonghyeongtan a combination thereof.

[6.]

According to claim 1,

The method of cross-linking agent having a seonghyeongtan that the two or more carboxyl groups comprises a compound represented by the following general formula (1).

Formula 1

X- (C00H) n - (in Formula 1 X is a single bond; an alkylene group, an arylene group, a carbonyl group, - 0-, -S-, -NH-, or a divalent connecting group selected from the combinations thereof; or an alkyl group or linking group trivalent removing any two hydrogen atoms from an aryl group; and, n is 2 or 3).

[7.]

. According to claim 1,

A crosslinking agent having at least the 2-carboxyl group of oxalic acid (ethanedioic acid) malonic acid (propanedioic acid), succinic acid (butanedioic acid), glutaric acid (pentanedioic " acid), adipic acid (hexanedioic acid) pimelic acid (heptanedioic acid), suberic acid (octanedioic acid) azelaic acid (nonanedioic acid), sebacic acid (decanedioic acid)

- a " ! ^ I :( benzene- 1, 2-di carboxy 1 ic acid, o-phthal ic acid) isophthalic acid (benzene-1,3 eu ic acid dicarboxyl, m-phthal ic acid) " ^ "^ benzene_l , 4_dicarboxylic acid, p-phthal ic acid), citric acid (method of producing seonghyeongtan containing citric acid), or a combination thereof.

[8.]

The method of claim 7,

A crosslinking agent having at least two carboxyl groups is the method for producing a seonghyeongtan containing succinic acid, citric acid or combinations thereof.

[9.] .

Crab according to claim 1, wherein

In the step of producing the blended carbon, the carbon is blended the methoxy hydroxy binder from 0.1 to 5 parts by weight, having a ¾>, 0.1 to 5% by weight crosslinking agent having at least the 2-carboxyl group, a moisture of 1 to 15% by weight and. The method of seonghyeongtan containing fine coal portion cup.

[10.]

10. The method of claim 9,.

In the step of producing the blended carbon, the carbon is blended the meteuk 0.5 to 3% binder having an increased time, 0.5 to 3% by weight cross-linking agent having at least the 2-carboxyl group, water 5 to 10% by weight and. The method of seonghyeongtan containing fine coal portion cup. '

[11.]

The reduced iron is charged into the melter-gasifier, and

And connected to said melter-gasifier, the reducing furnace to provide the reduced iron

In the apparatus for manufacturing molten iron containing a seonghyeongtan heated rapidly is charged to the dome of the melter-gasifier to,

A crosslinking agent having a binder and two or more carboxyl groups with a meteuk time, seonghyeongtan containing water and pulverized coal. .

[12.]

12. The method of claim 11,

As the binder having the methoxy group is a binder having a methoxy hydroxymethyl is hydroxypropylmethylcellulose saelreul agarose (Hydroxypropyl Methyl cellulose, HPMC), a hydroxyethyl methyl selreul agarose (Hydroxyethyl Methyl cellulose, HEMC), agarose (Methyl Cellulose methyl selreul , MC), lignin, lignin sulfonate, pectin seonghyeongtan or a combination thereof.

[13.]

12. The method of claim 11,

The cross-linking agent having at least two carboxyl groups Dakar acid (dicarboxylic acid), tricarboxylic acid (tricarboxylic acid), polyacrylic acid (poly acrylic acid) seonghyeongtan or a combination thereof.

[14.]

12. The method of claim 11,

Seonghyeongtan that the cross-linking agent having at least 2 carboxyl groups include the compounds represented by the following general formula (1). [Formula 1]

X-(C00H)n

(In Formula 1 X is a single bond; any two from or an alkyl group or an aryl group; a divalent connecting group selected from an alkylene group, an arylene group, a carbonyl group, -0-, -S-, -NH-, or a combination thereof trivalent linking group removed a hydrogen atom; and, n is 2 or 3).

[15.]

12. The method of claim 11,

A crosslinking agent having at least two carboxyl groups is the oxalic acid (ethanedioic acid) malonic acid (propanedioic acid), succinic acid (butanedioi'c acid) glutaric acid (pentanedioic acid), adipic acid (hexanedioic acid) pimelic acid (heptanedioic acid), can suberic acid (octanedioic acid) azelaic acid (nonanedioic acid), sebacic acid (decanedioic acid) phthalic acid (benzene-l, 2-dicarboxylic acid, o-phthal ic acid) isophthalic acid (benzene- l, 3_dicarboxyl ic acid, m-phthal ic acid) 1 terrorist acid (benzene- 1,4- dicarboxyl ic acid, p-phthal ic acid), citric acid (citric acid) seonghyeongtan or a combination thereof.

[16.]

12. The method of claim 11,

A crosslinking agent having at least two carboxyl groups is the seonghyeongtan containing succinic acid, citric acid or combinations thereof.

[17.]

12. The method of claim 11,

The meteuk binder having a period of 0.1 to 5 parts by weight of the two or more cross-linking agent having a carboxyl group, 0.1 to 5 weight ¾>, water 1 to 15 parts by weight ¾ »and the balance part seonghyeongtan containing the pulverized coal.

[18.]

18. The method of claim 17,

The meteuk binder 0.5 to 3 parts by weight with time, from 0.5 to 3% by weight cross-linking agent having two or more of the carboxyl groups, seonghyeongtan containing moisture of 5 to 10% by weight and a fine coal portion cup.

[19.]

12. The method of claim 11,

Seonghyeongtan further comprising a crosslinked product made by crosslinking reaction of the crosslinking agent having a binder and at least two carboxyl groups having the hydroxy methoxy.