FIELD OF INVENTION
The present invention relates to a process for the filtration and purification of
natural river sand. More particularly the present invention relates to a process of
removing substantially all the impurities from the natural river sand obtained from
the river dumping yard. The present invention further relates to a process for the
packaging of purified sand in sand bags. The present invention particularly relates
to a system for the processing and packaging of river sand. Moreover the present
invention further relates to the system which will help in protecting the
atmosphere from pollution.
BACKGROUND OF INVENTION & DESCRIPTION OF PRIOR ART
Sand is a naturally occurring granular material composed of finely
divided rock and mineral particles. The most common constituent of sand is
silica (silicon dioxide, or SiO2), usually in the form of quartz. Sand is formed by
the weathering of rocks. Based on the natural sources from which sand is
obtained, it is classified as Pit sand, River sand, Sea sand. This sand is widely
used for all purposes. It is obtained from the banks or beds of rivers and it consists
of fine rounded grains. The presence of fine rounded grains is due to mutual
attrition under the action of water current. The river sand is available in clean
conditions and is almost white in color.
Sand is classified on the basis of the grain size distribution Fine sand: The sand
passing through a sieve with clear openings of 1.5875 mm to 500 micron is
known as fine sand. Fine sand is mainly used for plastering. Coarse sand: The
sand passing through a sieve with clear openings of 3.175 mm is known as coarse
sand. It is generally used for masonry work. Gravelly sand: The sand passing
through a sieve with clear openings of 7.62 mm is known as gravelly sand. It is
generally used for concrete work.
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Different construction works require different standards of sand for construction.
Brick Work: finest modulus of fine sand should be 1.2 to 1.5 and silt contents
should not be more than 4%. Plaster Work: finest modulus of fine sand should not
be more than 1.5 and silt contents should not be more than 4%. Concrete Work:
coarse sand should be used with finest modulus 2.5 to 3.5 and silt contents should
not be more than 4%.
PROPERTIES OF GOOD SAND
It should be clean and coarse, It should be free from any organic or vegetable
matter; usually 3-4 per cent clay is permitted, It should be chemically inert, It
should contain sharp, angular, coarse and durable grains, It should not contain
salts which attract moisture from the atmosphere, It should be well graded, i.e., it
should contain particles of various sizes in suitable proportions, It should be
strong and durable, It should be clean and free from coatings of clay and silt.
Deleterious materials in sand
Sand shall not contain any harmful impurities such as iron, pyrites, alkalis, salts,
coal or other organic impurities, mica, shale or similar laminated materials, soft
fragments, sea shale in such form or in such quantities as to affect adversely the
hardening, strength or durability of the mortar. The maximum quantities of clay,
fine silt, fine dust and organic impurities in the sand / marble dust shall not exceed
the following limits: Clay, fine silt and fine dust when determined in accordance
within not more than 5% by mass in IS 2386 (Part-II), natural sand.
River Sand and Other Sands Create the Pollution
Open Sand Create the Pollution on Roads, causes air pollution, creates pollution
on construction sites, covers the space of roads, sand supply through animals
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cause pollution on roads, Cause accidents due to Open River sand on roads,
Creates the pollution in residential colonies.
The present invention deals with the system which provide the process for
filtration and packaging of river sand from the river sand dumping yard without
causing any pollution in the environment and maintaining the purity of the river
sand as per Indian Sand Standard.
In prior art searches several patents were cited as of general interest in the art, but
still fail to overcome the problems cited above.
OBJECTS OF THE INVENTION
The principal object of the present invention is to provide a process for the
filtration and purification of river sand which obviates the drawbacks of the
hitherto known prior art as detailed above.
Another object of the present invention is to provide a process for the packaging
of purified sand in sand bags.
Yet another object of the present invention is to provide a filtered River Sand
without Clay, Stone and Dust.
Still another object of the present invention is to provide a filtered River Sand
maintaining the River Sand Indian Sand Standard which meets the quality and
never creates the bubbles on walls.
Yet another object of the present invention is to provide a filtered River Sand of
Indian Sand Standard 1.5875 MM to 500 Micron.
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Still another object of the present invention is to provide filtered river sand where
the 50kg sand bags packed automatically through machines.
SUMMARY OF THE INVENTION
The following presents a simplified summary of the disclosure in order to provide
a basic understanding to the reader. The summary is not an extensive overview of
the disclosure and it does not identify key/ critical elements of the invention or
delineate the scope of the invention. Its sole purpose is to present some concepts
disclosed herein in a simplified form as a prelude to the more detailed description
that is presented later.
A more complete appreciation of the present invention and the scope thereof can
be obtained from the accompanying drawings which are briefly summarized
below and the following detailed description of the presently preferred
embodiments.
The embodiment of the present invention contemplates to the system for filtration
and purification of river sand.
Another embodiment of the present invention contemplates to a process for the
packaging of purified sand in sand bags.
Yet another embodiment of the present invention contemplates the system which
will help in protecting the atmosphere from pollution.
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Still another embodiment of the present invention contemplates the system which
provides a filtered River Sand without Clay, Stone and Dust.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects and advantages of the present invention will become apparent to
those skilled in the art upon reading the following detailed description of the
preferred embodiments, in conjunction with the accompanying drawings, wherein
like reference numerals have been used to designate like elements, and wherein:
FIG. 1 illustrates plain view and elevated view of River sand packing plant
illustrating the filtered sand packaging unit in accordance with an exemplary
embodiment of the present disclosure;
FIG. 2 illustrates River sand vibratory screening station in accordance with an
exemplary embodiment of the present disclosure;
FIG. 3 illustrates river sand washing plant in accordance with an exemplary
embodiment of the present disclosure;
DETAILED DESCRIPTION OF THE INVENTION
It is to be understood that the present disclosure is not limited in its application to
the details of construction and the arrangement of components set forth in the
following description or illustrated in the drawings. The present disclosure is
capable of other embodiments and of being practiced or of being carried out in
various ways. Also, it is to be understood that the phraseology and terminology
used herein is for the purpose of description and should not be regarded as
limiting.
The use of “including”, “comprising” or “having” and variations thereof herein is
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meant to encompass the items listed thereafter and equivalents thereof as well as
additional items. The terms “a” and “an” herein do not denote a limitation of
quantity, but rather denote the presence of at least one of the referenced item.
Further, the use of terms “first”, “second”, and “third”, and the like, herein do not
denote any order, quantity, or importance, but rather are used to distinguish one
element from another.
Sand is a naturally occurring granular material composed of finely
divided rock and mineral particles. The most common constituent of sand is
silica (silicon dioxide, or SiO2), usually in the form of quartz. Sand is formed by
the weathering of rocks. Based on the natural sources from which sand is
obtained, it is classified as Pit sand, River sand, Sea sand. This sand is widely
used for all purposes. It is obtained from the banks or beds of rivers and it consists
of fine rounded grains. The presence of fine rounded grains is due to mutual
attrition under the action of water current. The river sand is available in clean
conditions and is almost white in color.
Sand is classified on the basis of the grain size distribution Fine sand: The sand
passing through a sieve with clear openings of 1.5875 mm to 500 micron is
known as fine sand. Fine sand is mainly used for plastering. Coarse sand: The
sand passing through a sieve with clear openings of 3.175 mm is known as coarse
sand. It is generally used for masonry work. Gravelly sand: The sand passing
through a sieve with clear openings of 7.62 mm is known as gravelly sand. It is
generally used for concrete work.
Different construction works require different standards of sand for construction.
Brick Work: finest modulus of fine sand should be 1.2 to 1.5 and silt contents
should not be more than 4%. Plaster Work: finest modulus of fine sand should not
be more than 1.5 and silt contents should not be more than 4%. Concrete Work:
coarse sand should be used with finest modulus 2.5 to 3.5 and silt contents should
not be more than 4%.
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The good sand should be clean and coarse, It should be free from any organic or
vegetable matter; usually 3-4 per cent clay is permitted, It should be chemically
inert, It should contain sharp, angular, coarse and durable grains, It should not
contain salts which attract moisture from the atmosphere, It should be well
graded, i.e., it should contain particles of various sizes in suitable proportions, It
should be strong and durable, It should be clean and free from coatings of clay
and silt.
Sand shall not contain any harmful impurities such as iron, pyrites, alkalis, salts,
coal or other organic impurities, mica, shale or similar laminated materials, soft
fragments, sea shale in such form or in such quantities as to affect adversely the
hardening, strength or durability of the mortar. The maximum quantities of clay,
fine silt, fine dust and organic impurities in the sand / marble dust shall not exceed
the following limits: Clay, fine silt and fine dust when determined in accordance
within not more than 5% by mass in IS 2386 (Part-II), natural sand.
To check the quality of fine sand; put some quantity of sand in a glass of water.
Then it is vigorously shaken and allowed to settle. If the clay is present in sand, its
distinct layer is formed at the top of sand. To detect the presence of organic
impurities in sand, a solution of sodium hydroxide or caustic soda is added to sand
and stirred. If the color of solution changes into brown, it shows presence of
impurities.
The increase in the volume of sand due to the presence of moisture is known as
bulking of sand. This is due to the fact that moisture forms a film of water around
the sand particles and this result in an increase in the volume of sand. The extent
of bulking depends on the grading of sand. The finer the material the more will be
the increase in volume for the given moisture content. For a moisture content of
5–8 per cent, the increase in volume may be about 20–40 per cent depending upon
the gradation of sand. When the moisture content is further increased, the sand
particles pack near each other and the amount of bulking is decreased. Hence, dry
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sand and the sand completely flooded with water have practically the same
volume.
The present invention deals with the system which provide the process for
filtration and packaging of river sand from the river sand dumping yard without
causing any pollution in the environment and maintaining the purity of the river
sand as per Indian Sand Standard.
illegal mining is going on in full swing and River sand grabbers are drawing the
sand from River illegally and earning handsome money from illegal mining, by
which Government is losing revenue, not only revenue but property like roads
which are damaged by the sand mafia while loading the trucks, Trolleys and
Tippers.
It is requested to allow us to do legal mining or if the said task has been given to
any other party, sand will be purchased by us from the said party. We also load
the purchase sand in our own trucks and shift to our plant were we will filter the
sand and pack the purified sand in sand bags and this process will help to protect
the atmosphere from pollution.
The present invention aims at a process for the filtration and purification of river
sand and also further provides a process for the packaging of purified sand in sand
bags. The present invention particularly relates to a system for the processing and
packaging of river sand. Moreover the present invention further relates to the
system which will help in protecting the atmosphere from pollution.
The Natural River sand processing and packing consist of following steps:
• Sand is collected from the nearest river dumping yard and then shifted to
the conveyor belt where it is dropped into the sand processing plant.
• Processing Operation of the river sand starts with the vibratory screening
station where size of the filtered sand selected as per the Indian Sand
Standard, afterwards screening station discharge sand.
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• The river sand then approach towards the washing process where the water
is discharged with clay & slurry towards filtration tank and dewatering
screen particle separation below 500 micron takes place. Then material
output to conveyor and through the conveyor sand will discharge into the
dryer process for dry sand and then moisture will be checked.
• Lab testing & quality check will be done afterwards where moisture check
will not be more than 2 to 5%, silt check silt ratio not be more than 1 to
2% and size, weight check as per Indian Sand Standard.
• After lab testing sand will be shifted through conveyor to packing plant
and machine will pack 50kg sand bags automatically. Then bags shifted
through conveyor to truck loader platform and loader will load bags into
truck and then shifted to godowns. Before the bags shifted into market all
bags will get the barcode and the process completed.
FIG. 1 illustrates plain view and elevated view of River sand packing plant
illustrating the filtered sand packaging unit in accordance with an exemplary
embodiment of the present disclosure;
FIG. 2 illustrates River sand vibratory screening station in accordance with an
exemplary embodiment of the present disclosure;
FIG. 3 illustrates river sand washing plant in accordance with an exemplary
embodiment of the present disclosure;

WE CLAIM
1. A process for the filtration of natural river sand and packaging of the
filtered sand in the sand bags.
2. A process as claimed in claim 1, comprises the steps of:
a) collecting sand from the nearest river dumping yard and then shifting the
sand to the conveyor belt where it is dropped into the sand processing
plant;
b) processing of the river sand with the vibratory screening station where size
of the filtered sand selected as per the Indian Sand Standard and
discharged into screening station;
c) washing process; wherein water is discharged with clay and slurry towards
filtration tank and dewatering screen particle separation below 500 micron
takes place;
d) drying process; wherein the material output to conveyor and through the
conveyor sand will discharge into the dryer process for dry sand and then
moisture will be checked;
e) testing and quality check in laboratory will be done; wherein moisture
check will not be more than 2 to 5%, silt check will not be more than 1 to
2% and size, weight check as per Indian Sand Standard;
f) shifting of filtered sand for packing to the packaging plant and machine
will pack 50kg sand bags automatically;
g) Loading of bags into truck and then shifted to godowns. Before the bags
shifted into market all bags will get the barcode.
3 A process as claimed in claim 1; wherein the system provides a process
which helps in protecting the atmosphere from the pollution.
4 A process as claimed in claim 1; wherein the process provides filtered
River Sand without Clay, Stone and Dust.
5 A process as claimed in claim 1; wherein process provides a filtered River
Sand of Indian Sand Standard 1.5875 MM to 500 Micron.