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A Reduction Apparatus Of A Fine Iron Ore
Abstract: Disclosed are an iron ore powder reducing device and reducing method. The iron ore powder reducing device according to the present invention comprises: a coarse ore preliminary reduction furnace into which is charged iron ore powder and which subjects the iron ore powder to preliminary reduction by means of a reducing gas; an ultrafine ore preliminary reduction furnace into which is charged an ultrafine ore that has been scattered and discharged from the coarse ore preliminary reduction furnace and which subjects same to preliminary reduction; a first magnetic sorter for separating out the gangue component from the ultrafine ore that has been reduced in and discharged from the ultrafine ore preliminary reduction furnace; at least one interim reduction furnace for increasing the rate of reduction of the coarse ore and ultrafine ore into which is charged the coarse ore that has been reduced in and discharged from the coarse ore preliminary reduction furnace and the ultrafine ore that has had the gangue component separated out and which subjects (subject) same to additional reduction; and a final reduction furnace for producing reduced iron by carrying out a final reduction of the coarse ore and the ultrafine ore that has been reduced in and discharged from the interim reduction furnace(s).
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
02 July 2014
Publication Number
21/2016
Publication Type
INA
Invention Field
METALLURGY
Status
Email
ipo@knspartners.com
Parent Application
Patent Number
Legal Status
Grant Date
2021-09-28
Renewal Date
Applicants
POSCO
(Goedong dong) 6261 Donghaean ro
Nam gu Pohang si
Gyeongsangbuk do 790 300
Inventors
1. JEONG Sunkwang
c/o POSCO
1 Goedong dong Nam gu
Pohang si
Gyeongsangbuk do 790 300
2. YI Sang Ho
c/o POSCO
1 Goedong dong Nam gu
Pohang si
Gyeongsangbuk do 790 300
3. YOUN Ja Young
c/o POSCO
1 Goedong dong Nam gu
Pohang si
Gyeongsangbuk do 790 300
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 5449-DELNP-2014-Correspondence-140721.pdf | 2021-10-17 |
| 1 | Form-5.pdf | 2014-07-03 |
| 2 | 5449-DELNP-2014-Power of Attorney-140721.pdf | 2021-10-17 |
| 2 | Form-3.pdf | 2014-07-03 |
| 3 | Eng Translation of specification.pdf | 2014-07-03 |
| 3 | 5449-DELNP-2014-US(14)-HearingNotice-(HearingDate-01-07-2021).pdf | 2021-10-17 |
| 4 | Drawings.pdf | 2014-07-03 |
| 4 | 5449-DELNP-2014-IntimationOfGrant28-09-2021.pdf | 2021-09-28 |
| 5 | 5449-DELNP-2014-PatentCertificate28-09-2021.pdf | 2021-09-28 |
| 5 | 5449-DELNP-2014-GPA-(22-07-2014).pdf | 2014-07-22 |
| 6 | 5449-DELNP-2014-Written submissions and relevant documents [14-07-2021(online)].pdf | 2021-07-14 |
| 6 | 5449-DELNP-2014-Correspondence-Others-(22-07-2014).pdf | 2014-07-22 |
| 7 | 5449-DELNP-2014-FORM-26 [13-07-2021(online)].pdf | 2021-07-13 |
| 7 | 5449-delnp-2014-Correspondence-Others-(12-08-2014).pdf | 2014-08-12 |
| 8 | 5449-DELNP-2014-PETITION UNDER RULE 137 [13-07-2021(online)]-1.pdf | 2021-07-13 |
| 8 | 5449-delnp-2014-English-Translation-(02-12-2014).pdf | 2014-12-02 |
| 9 | 5449-delnp-2014-Correspondence Others-(02-12-2014).pdf | 2014-12-02 |
| 9 | 5449-DELNP-2014-PETITION UNDER RULE 137 [13-07-2021(online)].pdf | 2021-07-13 |
| 10 | 5449-DELNP-2014-Correspondence to notify the Controller [30-06-2021(online)].pdf | 2021-06-30 |
| 10 | 5449-delnp-2014-Form-3-(02-01-2015).pdf | 2015-01-02 |
| 11 | 5449-DELNP-2014-CLAIMS [25-07-2019(online)].pdf | 2019-07-25 |
| 11 | 5449-delnp-2014-Correspondence Others-(02-01-2015).pdf | 2015-01-02 |
| 12 | 5449-DELNP-2014-COMPLETE SPECIFICATION [25-07-2019(online)].pdf | 2019-07-25 |
| 12 | 5449-DELNP-2014-FER.pdf | 2019-01-28 |
| 13 | 5449-DELNP-2014-DRAWING [25-07-2019(online)].pdf | 2019-07-25 |
| 13 | 5449-DELNP-2014-Information under section 8(2) (MANDATORY) [15-04-2019(online)].pdf | 2019-04-15 |
| 14 | 5449-DELNP-2014-FER_SER_REPLY [25-07-2019(online)].pdf | 2019-07-25 |
| 14 | 5449-DELNP-2014-FORM-26 [15-04-2019(online)].pdf | 2019-04-15 |
| 15 | 5449-DELNP-2014-FORM 3 [15-04-2019(online)].pdf | 2019-04-15 |
| 15 | 5449-DELNP-2014-OTHERS [25-07-2019(online)].pdf | 2019-07-25 |
| 16 | 5449-DELNP-2014-certified copy of translation (MANDATORY) [15-04-2019(online)].pdf | 2019-04-15 |
| 16 | 5449-DELNP-2014-Correspondence-160419-.pdf | 2019-04-26 |
| 17 | 5449-DELNP-2014-Power of Attorney-160419.pdf | 2019-04-26 |
| 17 | 5449-DELNP-2014-Correspondence-160419.pdf | 2019-04-26 |
| 18 | 5449-DELNP-2014-OTHERS-160419.pdf | 2019-04-26 |
| 19 | 5449-DELNP-2014-Correspondence-160419.pdf | 2019-04-26 |
| 19 | 5449-DELNP-2014-Power of Attorney-160419.pdf | 2019-04-26 |
| 20 | 5449-DELNP-2014-certified copy of translation (MANDATORY) [15-04-2019(online)].pdf | 2019-04-15 |
| 20 | 5449-DELNP-2014-Correspondence-160419-.pdf | 2019-04-26 |
| 21 | 5449-DELNP-2014-FORM 3 [15-04-2019(online)].pdf | 2019-04-15 |
| 21 | 5449-DELNP-2014-OTHERS [25-07-2019(online)].pdf | 2019-07-25 |
| 22 | 5449-DELNP-2014-FER_SER_REPLY [25-07-2019(online)].pdf | 2019-07-25 |
| 22 | 5449-DELNP-2014-FORM-26 [15-04-2019(online)].pdf | 2019-04-15 |
| 23 | 5449-DELNP-2014-DRAWING [25-07-2019(online)].pdf | 2019-07-25 |
| 23 | 5449-DELNP-2014-Information under section 8(2) (MANDATORY) [15-04-2019(online)].pdf | 2019-04-15 |
| 24 | 5449-DELNP-2014-FER.pdf | 2019-01-28 |
| 24 | 5449-DELNP-2014-COMPLETE SPECIFICATION [25-07-2019(online)].pdf | 2019-07-25 |
| 25 | 5449-DELNP-2014-CLAIMS [25-07-2019(online)].pdf | 2019-07-25 |
| 25 | 5449-delnp-2014-Correspondence Others-(02-01-2015).pdf | 2015-01-02 |
| 26 | 5449-DELNP-2014-Correspondence to notify the Controller [30-06-2021(online)].pdf | 2021-06-30 |
| 26 | 5449-delnp-2014-Form-3-(02-01-2015).pdf | 2015-01-02 |
| 27 | 5449-delnp-2014-Correspondence Others-(02-12-2014).pdf | 2014-12-02 |
| 27 | 5449-DELNP-2014-PETITION UNDER RULE 137 [13-07-2021(online)].pdf | 2021-07-13 |
| 28 | 5449-delnp-2014-English-Translation-(02-12-2014).pdf | 2014-12-02 |
| 28 | 5449-DELNP-2014-PETITION UNDER RULE 137 [13-07-2021(online)]-1.pdf | 2021-07-13 |
| 29 | 5449-delnp-2014-Correspondence-Others-(12-08-2014).pdf | 2014-08-12 |
| 29 | 5449-DELNP-2014-FORM-26 [13-07-2021(online)].pdf | 2021-07-13 |
| 30 | 5449-DELNP-2014-Correspondence-Others-(22-07-2014).pdf | 2014-07-22 |
| 30 | 5449-DELNP-2014-Written submissions and relevant documents [14-07-2021(online)].pdf | 2021-07-14 |
| 31 | 5449-DELNP-2014-PatentCertificate28-09-2021.pdf | 2021-09-28 |
| 31 | 5449-DELNP-2014-GPA-(22-07-2014).pdf | 2014-07-22 |
| 32 | Drawings.pdf | 2014-07-03 |
| 32 | 5449-DELNP-2014-IntimationOfGrant28-09-2021.pdf | 2021-09-28 |
| 33 | Eng Translation of specification.pdf | 2014-07-03 |
| 33 | 5449-DELNP-2014-US(14)-HearingNotice-(HearingDate-01-07-2021).pdf | 2021-10-17 |
| 34 | Form-3.pdf | 2014-07-03 |
| 34 | 5449-DELNP-2014-Power of Attorney-140721.pdf | 2021-10-17 |
| 35 | Form-5.pdf | 2014-07-03 |
| 35 | 5449-DELNP-2014-Correspondence-140721.pdf | 2021-10-17 |
Search Strategy
| 1 | SearchStrategy5449DELNP2014_14-08-2018.pdf |