CN102069036B - Method for recycling waste magnesia carbon brick - Google Patents
Method for recycling waste magnesia carbon brick Download PDFInfo
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- CN102069036B CN102069036B CN201010541525A CN201010541525A CN102069036B CN 102069036 B CN102069036 B CN 102069036B CN 201010541525 A CN201010541525 A CN 201010541525A CN 201010541525 A CN201010541525 A CN 201010541525A CN 102069036 B CN102069036 B CN 102069036B
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- flotation
- ore pulp
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- breeze
- foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/20—Magnetic separation whereby the particles to be separated are in solid form
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for recycling a waste magnesia carbon brick, which comprises the following steps of: (1) pulverizing the waste magnesia carbon brick to obtain mineral powder; (2) charging the mineral powder into a stirring tank for adding water to be stirred into mineral slurry; (3) roughing: carrying out first fine flotation on the foams obtained after roughing through a pipeline and carrying out first scavenging on the mineral slurry; (4) carrying out first fine flotation: carrying out fine flotation by adopting a mechanical stirring type flotation machine; (5) carrying out secondary fine flotation: carrying out fine flotation by adopting two mechanical stirring type flotation machines with air self-adsorbing and mineral slurry self-adsorbing dual functions; (6) carrying out first scavenging on the mineral slurry obtained after rough flotation in the step (3) and carrying out secondary scavenging on the floated mineral slurry; (7) carrying out secondary scavenging: carrying out third scavenging on the floated mineral slurry: (8) carrying out third scavenging: carrying out fourth scavenging on the floated mineral slurry; and (9) carrying out fourth scavenging: drying the floated slurry subjected to concentration and press filtration for dehydration to obtain a magnesia product. The invention ensures that the waste magnesia carbon brick is completely recycled after processed, realizes the recycling of resources and greatly reduces the production cost, and the annual profit with treatment capacity of 4,000t per year can reach 3,000,000 yuan or so.
Description
Technical field
The present invention relates to the recycling of refractory material, is a kind of recoverying and utilizing method of waste magnesia carbon brick.
Background technology
The magnesia carbon brick that uses in iron and steel enterprise's converter belongs to the steel-making consumptive material, has every year hundreds of thousands ton magnesia carbon brick to scrap.These useless bricks generally are all to discard, its serious environment pollution, and take bigger storage area, need payment than high cost to the processing iron and steel enterprise of this useless brick is annual.For this reason, in recent years, those skilled in the art were devoted to provide the method for recycling, to solve the above-mentioned deficiency that discarded brick brings.Though some method can make useless magnesia brick utilize through handling again, it can not accomplish zero-emission in processing procedure, still has the pollution to environment, and complex process, and cost is higher relatively, and earning rate is low.High abroad to its cost of recoverying and utilizing method of useless magnesia brick, be not suitable for China's steel industry.
Summary of the invention
The recoverying and utilizing method that the purpose of this invention is to provide a kind of waste magnesia carbon brick, it all adopts waste magnesia carbon brick is raw material, waste material after treatment can all utilize again, to solve the deficiency that prior art exists.
The present invention realizes: may further comprise the steps for realizing above-mentioned purpose by the following technical programs:
1. waste magnesia carbon brick is crushed to below 1 millimeter, obtains breeze;
2. breeze is inserted and add entry in the tank diameter and stir into ore pulp; Pulp density is 23-27%; In breeze, stir by weight adding sodium metasilicate, kerosene and terpenic oil, breeze adding 950-1050 gram concentration per ton is 5% sodium metasilicate, 480-500 gram kerosene and 70-90 gram terpenic oil;
3. roughly select: step ore pulp is 2. inserted an inflation self-priming agitation impeller flotator carry out flotation with parallel the connection in the inflation agitation impeller flotator that uses of inflation self-priming agitation impeller flotator with two; The foam that floatingly selects gets into primary cleaning through pipeline; Ore pulp after the flotation gets into inflation self-priming agitation impeller flotator through pipeline with step ore pulp 2. and carries out flotation again; The foam of roughly selecting out gets into primary cleaning through pipeline, and ore pulp gets into once purging selection;
4. primary cleaning: it is selected to adopt the agitation impeller flotator of two air self-suctions and self-priming ore pulp dual-use function to carry out, and the foam of step in 3. gets into the foam that floatingly selects behind this precision sorting flotation machine and get into recleaning, and the ore pulp after the flotation returns to be roughly selected;
5. recleaning: adopt the agitation impeller flotator of two air self-suctions and self-priming ore pulp dual-use function to carry out selected; The foam of step in 4. got into the foam that floatingly selects behind this precision sorting flotation machine be the graphite concentrate; Obtain graphite products through concentrated, filter-press dehydration oven dry, return in the primary cleaning flotation device through the ore pulp after this flotation;
6. step is 3. middle gets into once purging selection through the ore pulp after roughly selecting, and once purging selection adopts two parallel connections of flotation devices to use, and the foam that floatingly selects returns to be roughly selected, and the ore pulp entering secondary after the flotation is scanned;
7. secondary is scanned: adopt two parallel connections of flotation device to use, the foam that floatingly selects returns once purging selection, and the ore pulp after the flotation gets into three times and scans;
8. scan for three times: adopt two parallel connections of flotation device to use, the foam that floatingly selects returns once purging selection, and the ore pulp after the flotation gets into four times and scans;
9. scan for four times: adopt the parallel connections of two flotation devices to use, the foam that floatingly selects returns once purging selection, the ore pulp after the flotation through concentrating, oven dry obtains the magnesia product behind the filter-press dehydration;
Roughly select step 3. in by weight in breeze, adding sodium carbonate 400-600g/t and sodium metasilicate 700-850g/t; The primary cleaning step 4. in by weight in breeze, adding sodium carbonate 400-600g/t and sodium metasilicate 400-600g/t.
Step 6., 7., 8., 9. described scanning, all adopt the self-priming agitation impeller flotator of inflation and inflate that agitation impeller flotator is parallel to be connected use; The once purging selection step 6. in breeze per ton by weight in ore pulp, adding kerosene 375g/t and terpenic oil 80g/t; Secondary scan step 7. in breeze per ton by weight in ore pulp, adding kerosene 250g/t and terpenic oil 80g/t; Scan for three times step 8. in breeze per ton by weight in ore pulp, adding kerosene 185g/t and terpenic oil 80g/t; Scan for four times step 9. in breeze per ton by weight in ore pulp, adding kerosene 125g/t and terpenic oil 40g/t.
Roughly select step 3. in by weight in breeze, adding sodium carbonate 500g/t and sodium metasilicate 800g/t; The primary cleaning step 4. in by weight in breeze, adding sodium carbonate 500g/t and sodium metasilicate 500g/t.
The invention has the advantages that: all utilize again after waste magnesia carbon brick is handled, utilization rate reaches more than 95%, realizes the resource circulation utilization; The processing procedure of waste magnesia carbon brick reaches zero-emission, and the graphite productive rate reaches 33%, and grade is greater than 55%; The magnesia productive rate reaches 67%, and the magnesia grade reaches 92%, has thoroughly solved the pollution of waste magnesia carbon brick to environment; And, production cost is reduced significantly for enterprise has brought higher income.Year treating capacity is that the annual earnings of 4000t can reach about 3,000,000 yuan.
Description of drawings
Accompanying drawing 1 is recoverying and utilizing method general flow chart of the present invention.
The specific embodiment
The recoverying and utilizing method of a kind of waste magnesia carbon brick of the present invention comprises the steps:
1. waste magnesia carbon brick is crushed to below 1 millimeter, obtains breeze;
2. breeze is inserted and add entry in the tank diameter and stir into ore pulp; Pulp density is 23-27%; In breeze, stir by weight adding sodium metasilicate, kerosene and terpenic oil, breeze adding 950-1050 gram concentration per ton is 5% sodium metasilicate, 480-500 gram kerosene and 70-90 gram terpenic oil;
3. roughly select: step ore pulp is 2. inserted an inflation self-priming agitation impeller flotator carry out flotation with parallel the connection in the inflation agitation impeller flotator that uses of inflation self-priming agitation impeller flotator with two; The foam that floatingly selects gets into primary cleaning through pipeline; Ore pulp after the flotation gets into inflation self-priming agitation impeller flotator through pipeline with step ore pulp 2. and carries out flotation again; The foam of roughly selecting out gets into primary cleaning through pipeline, and ore pulp gets into once purging selection;
4. primary cleaning: it is selected to adopt the agitation impeller flotator of two air self-suctions and self-priming ore pulp dual-use function to carry out, and the foam of step in 3. gets into the foam that floatingly selects behind this precision sorting flotation machine and get into recleaning, and the ore pulp after the flotation returns to be roughly selected;
5. recleaning: adopt the agitation impeller flotator of two air self-suctions and self-priming ore pulp dual-use function to carry out selected; The foam of step in 4. got into the foam that floatingly selects behind this precision sorting flotation machine be the graphite concentrate; Obtain graphite products through concentrated, filter-press dehydration oven dry, return in the primary cleaning flotation device through the ore pulp after this flotation;
6. step is 3. middle gets into once purging selection through the ore pulp after roughly selecting, and once purging selection adopts two parallel connections of flotation devices to use, and the foam that floatingly selects returns to be roughly selected, and the ore pulp entering secondary after the flotation is scanned;
7. secondary is scanned: adopt two parallel connections of flotation device to use, the foam that floatingly selects returns once purging selection, and the ore pulp after the flotation gets into three times and scans;
8. scan for three times: adopt two parallel connections of flotation device to use, the foam that floatingly selects returns once purging selection, and the ore pulp after the flotation gets into four times and scans;
9. scan for four times: adopt the parallel connections of two flotation devices to use, the foam that floatingly selects returns once purging selection, the ore pulp after the flotation through concentrating, oven dry obtains the magnesia product behind the filter-press dehydration;
Roughly select step 3. in by weight in breeze, adding sodium carbonate 400-600g/t and sodium metasilicate 700-850g/t; The primary cleaning step 4. in by weight in breeze, adding sodium carbonate 400-600g/t and sodium metasilicate 400-600g/t.
Step 6., 7., 8., 9. described scanning, all adopt the self-priming agitation impeller flotator of inflation and inflate that agitation impeller flotator is parallel to be connected use; The once purging selection step 6. in breeze per ton by weight in ore pulp, adding kerosene 375g/t and terpenic oil 80g/t; Secondary scan step 7. in breeze per ton by weight in ore pulp, adding kerosene 250g/t and terpenic oil 80g/t; Scan for three times step 8. in breeze per ton by weight in ore pulp, adding kerosene 185g/t and terpenic oil 80g/t; Scan for four times step 9. in breeze per ton by weight in ore pulp, adding kerosene 125g/t and terpenic oil 40g/t.
Roughly select step 3. in by weight in breeze, adding sodium carbonate 500g/t and sodium metasilicate 800g/t; The primary cleaning step 4. in by weight in breeze, adding sodium carbonate 500g/t and sodium metasilicate 500g/t.
The interpolation flotation agent sodium carbonate that uses in the method for the present invention is the adjustment agent, and its concentration is 10%, and sodium metasilicate is a dispersant; Concentration is 5%, and kerosene is collecting agent, under original content, uses; Terpenic oil is a foaming agent, under original content, uses, and the floatability of using the purpose of flotation agent to be to improve carbon suppresses the come-up of magnesia; Make further separated of carbon and magnesia, further improve the grade of graphite.Additive in the inventive method also can adopt the pulp density metering, and for example: when the ore pulp weight concentration is 23-27%, handle 25 tons of raw materials every day, per hour handle 1.042 tons of raw materials, calculate by 25% concentration, mineral slurry flux is 3.4m
3/ h.
Tank diameter adds sodium metasilicate 20833ml/h, kerosene 569ml/h and terpenic oil 108ml/h.
Roughly select: in rougher cell, add sodium carbonate 5208ml/h and sodium metasilicate 16667ml/h.
Primary cleaning: in flotation cell, add sodium carbonate 5208ml/h and sodium metasilicate 10417ml/h.
Once purging selection: in flotation cell, add kerosene 427ml/h and terpenic oil 108ml/h.
Secondary is scanned: in flotation cell, add kerosene 285ml/h and terpenic oil 108ml/h.
Scan for three times: in flotation cell, add kerosene 211ml/h and terpenic oil 108ml/h.
Scan for four times: in flotation cell, add kerosene 142ml/h and terpenic oil 54ml/h.
The foam of selecting in the inventive method is mainly the graphite concentrate.
Claims (3)
1. the recoverying and utilizing method of a waste magnesia carbon brick is characterized in that: may further comprise the steps:
1. waste magnesia carbon brick is crushed to below 1 millimeter, obtains breeze;
2. breeze is inserted and add entry in the tank diameter and stir into ore pulp; Pulp density is 23-27%; In breeze, stir by weight adding sodium metasilicate, kerosene and terpenic oil, breeze adding 950-1050 gram concentration per ton is 5% sodium metasilicate, 480-500 gram kerosene and 70-90 gram terpenic oil;
3. roughly select: step ore pulp is 2. inserted an inflation self-priming agitation impeller flotator carry out flotation with parallel the connection in the inflation agitation impeller flotator that uses of inflation self-priming agitation impeller flotator with two; The foam that floatingly selects gets into primary cleaning through pipeline; Ore pulp after the flotation gets into inflation self-priming agitation impeller flotator through pipeline with step ore pulp 2. and carries out flotation again; The foam of roughly selecting out gets into primary cleaning through pipeline, and ore pulp gets into once purging selection;
4. primary cleaning: it is selected to adopt the agitation impeller flotator of two air self-suctions and self-priming ore pulp dual-use function to carry out, and the foam of step in 3. gets into the foam that floatingly selects behind this precision sorting flotation machine and get into recleaning, and the ore pulp after the flotation returns to be roughly selected;
5. recleaning: adopt the agitation impeller flotator of two air self-suctions and self-priming ore pulp dual-use function to carry out selected; The foam of step in 4. got into the foam that floatingly selects behind this precision sorting flotation machine be the graphite concentrate; Obtain graphite products through concentrated, filter-press dehydration oven dry, return in the primary cleaning flotation device through the ore pulp after this flotation;
6. step is 3. middle gets into once purging selection through the ore pulp after roughly selecting, and once purging selection adopts two parallel connections of flotation devices to use, and the foam that floatingly selects returns to be roughly selected, and the ore pulp entering secondary after the flotation is scanned;
7. secondary is scanned: adopt two parallel connections of flotation device to use, the foam that floatingly selects returns once purging selection, and the ore pulp after the flotation gets into three times and scans;
8. scan for three times: adopt two parallel connections of flotation device to use, the foam that floatingly selects returns once purging selection, and the ore pulp after the flotation gets into four times and scans;
9. scan for four times: adopt the parallel connections of two flotation devices to use, the foam that floatingly selects returns once purging selection, the ore pulp after the flotation through concentrating, oven dry obtains the magnesia product behind the filter-press dehydration;
Roughly select step 3. in by weight in breeze, adding sodium carbonate 400-600g/t and sodium metasilicate 700-850g/t; The primary cleaning step 4. in by weight in breeze, adding sodium carbonate 400-600g/t and sodium metasilicate 400-600g/t.
2. the recoverying and utilizing method of a kind of waste magnesia carbon brick according to claim 1 is characterized in that: step 6., 7., 8., 9. described scanning, all adopt the self-priming agitation impeller flotator of inflation and inflate that agitation impeller flotator is parallel to be connected use; The once purging selection step 6. in breeze per ton by weight in ore pulp, adding kerosene 375g/t and terpenic oil 80g/t; Secondary scan step 7. in breeze per ton by weight in ore pulp, adding kerosene 250g/t and terpenic oil 80g/t; Scan for three times step 8. in breeze per ton by weight in ore pulp, adding kerosene 185g/t and terpenic oil 80g/t; Scan for four times step 9. in breeze per ton by weight in ore pulp, adding kerosene 125g/t and terpenic oil 40g/t.
3. the recoverying and utilizing method of a kind of waste magnesia carbon brick according to claim 1 is characterized in that: roughly select step 3. in by weight in breeze, adding sodium carbonate 500g/t and sodium metasilicate 800g/t; The primary cleaning step 4. in by weight in breeze, adding sodium carbonate 500g/t and sodium metasilicate 500g/t.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010541525A CN102069036B (en) | 2010-11-12 | 2010-11-12 | Method for recycling waste magnesia carbon brick |
| PCT/CN2011/077534 WO2012062131A1 (en) | 2010-11-12 | 2011-07-25 | Method of recovering and exploiting blast furnace dust from iron-smelting |
| PCT/CN2011/081888 WO2012062194A1 (en) | 2010-11-12 | 2011-11-08 | Method of recycling and reusing waste magnesia-carbon brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010541525A CN102069036B (en) | 2010-11-12 | 2010-11-12 | Method for recycling waste magnesia carbon brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102069036A CN102069036A (en) | 2011-05-25 |
| CN102069036B true CN102069036B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010541525A Expired - Fee Related CN102069036B (en) | 2010-11-12 | 2010-11-12 | Method for recycling waste magnesia carbon brick |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102069036B (en) |
| WO (2) | WO2012062131A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069036B (en) * | 2010-11-12 | 2012-10-03 | 山东乾舜矿冶科技股份有限公司 | Method for recycling waste magnesia carbon brick |
| CN102505069A (en) * | 2011-10-19 | 2012-06-20 | 昆明理工大学 | Method for recovering lost gold-loaded carbon from tailings obtained in carbon leaching gold extraction process |
| CN102886300B (en) * | 2012-10-19 | 2013-12-18 | 内蒙古科技大学 | Ore separation method for recycling scandium from bayan obo tailings |
| CN104607296B (en) * | 2015-02-03 | 2017-02-22 | 沈阳隆基电磁科技股份有限公司 | Ilmenite beneficiation method and equipment |
| JP2017074604A (en) * | 2015-10-15 | 2017-04-20 | 新東工業株式会社 | Method for regeneration of casting mold sand and regeneration system |
| CN105268541B (en) * | 2015-11-23 | 2018-04-24 | 郴州市金贵银业股份有限公司 | The method that metal is recycled from stove waste lining brick |
| CN106311456A (en) * | 2016-08-31 | 2017-01-11 | 蒋朋钢 | Method for recovering iron concentrates and non-ferrous metals by virtue of head ash of sintering machine |
| CN106179769A (en) * | 2016-09-19 | 2016-12-07 | 中南大学 | The method of metallic copper in copper metallurgy waste refractory materials is reclaimed in a kind of flotation |
| CN107697934A (en) * | 2017-11-06 | 2018-02-16 | 中民驰远实业有限公司 | A kind of efficient reuse method of discarded magnesia carbon refractory |
| CN109158221A (en) * | 2018-08-23 | 2019-01-08 | 广东省大宝山矿业有限公司 | A kind of copper sulphur mine ore-sorting system improving foam pump mounting means |
| CN111530626B (en) * | 2020-04-24 | 2022-06-28 | 核工业北京化工冶金研究院 | Beneficiation method for recovering monazite from gravity concentrate of titanium-dressing tailings |
| CN113262881A (en) * | 2020-10-27 | 2021-08-17 | 水口山有色金属有限责任公司 | Zinc-selecting agent composition for lead-zinc sulfide ore and ore-selecting method for separating zinc and sulfur |
| CN112588431A (en) * | 2020-12-08 | 2021-04-02 | 鞍钢集团矿业有限公司 | Ore grinding-weak magnetic strong magnetic-gravity separation-reverse flotation process for magnetic hematite |
| CN113732007B (en) * | 2021-07-30 | 2023-01-31 | 华东理工大学 | Recycling method of coal gasification fine slag |
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| CN102069036B (en) * | 2010-11-12 | 2012-10-03 | 山东乾舜矿冶科技股份有限公司 | Method for recycling waste magnesia carbon brick |
| CN102085526B (en) * | 2010-11-16 | 2012-10-03 | 山东乾舜矿冶科技股份有限公司 | Recycling method of blast furnace dust generated in steel making industry |
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2010
- 2010-11-12 CN CN201010541525A patent/CN102069036B/en not_active Expired - Fee Related
-
2011
- 2011-07-25 WO PCT/CN2011/077534 patent/WO2012062131A1/en active Application Filing
- 2011-11-08 WO PCT/CN2011/081888 patent/WO2012062194A1/en active Application Filing
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| CN1765519A (en) * | 2005-09-02 | 2006-05-03 | 青海金瑞矿业发展股份有限公司 | Deslim-floatation celestite inished ore process |
| CN101824502A (en) * | 2010-04-30 | 2010-09-08 | 重庆钢铁(集团)有限责任公司 | Reduction roasting magnetic separation process of low-grade raw iron ores |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102069036A (en) | 2011-05-25 |
| WO2012062131A1 (en) | 2012-05-18 |
| WO2012062194A1 (en) | 2012-05-18 |
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