CN101078053A - Method for extracting metal indium, zinc and bismuth from blast furnace gas ash - Google Patents
Method for extracting metal indium, zinc and bismuth from blast furnace gas ash Download PDFInfo
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- CN101078053A CN101078053A CNA2007100660035A CN200710066003A CN101078053A CN 101078053 A CN101078053 A CN 101078053A CN A2007100660035 A CNA2007100660035 A CN A2007100660035A CN 200710066003 A CN200710066003 A CN 200710066003A CN 101078053 A CN101078053 A CN 101078053A
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- zinc
- indium
- bismuth
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- 229910052738 indium Inorganic materials 0.000 title claims abstract description 56
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000011701 zinc Substances 0.000 title claims abstract description 41
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 title claims abstract description 27
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052797 bismuth Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 21
- 230000007935 neutral effect Effects 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000654 additive Substances 0.000 claims abstract description 6
- 230000000996 additive effect Effects 0.000 claims abstract description 6
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 6
- 239000011787 zinc oxide Substances 0.000 claims description 11
- 235000014692 zinc oxide Nutrition 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000006298 dechlorination reaction Methods 0.000 claims description 7
- 238000002386 leaching Methods 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000006028 limestone Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 230000003252 repetitive effect Effects 0.000 claims description 3
- 238000005201 scrubbing Methods 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims description 2
- 238000005554 pickling Methods 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 10
- 239000000843 powder Substances 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 230000000382 dechlorinating effect Effects 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 238000005292 vacuum distillation Methods 0.000 abstract 1
- 239000011133 lead Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 7
- 239000000284 extract Substances 0.000 description 4
- 239000003500 flue dust Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052745 lead Inorganic materials 0.000 description 3
- 238000007885 magnetic separation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 229910000635 Spelter Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- 238000002620 method output Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method to extract indium, zinc and bismuth from gas ash with a blast furnace. The following is the process: the coke powder and additive will be added into gas ash and then will be deoxidized and volatilize by a rotary kiln, and indium, zinc and bismuth will be enriched in smoke in a way of gaseous oxidate, iron will come into slag. Zinc-oxygen powder can be gained after a reclaim of dust to the gas. The zinc-oxygen powder will be dechlorinated at damp condition, and a suitable NaOH solution will be added in, and it will be washed repeatly under 95 centigrade. The product after dechlorinating will be immersed with acid under a neutral condition, so as to the metal which is easy to be dissolved by acid will go into the neutral solution, and indium, lead and bismuth will be retained in the residue. The neutral solution will be refined to get rid of the remained iron and cadmoium, and then it will be electolyzed to get zinc. A second strong acid extraction under high temperate will be carried on by adding dense vitriol onto the neutral residual, the residual after that will be used to reclaim bismuth and lead. Indium is contained in the extraction solution contain, and the solution will be extracted by P2O4, and a contrary extraction will be carried on with hydrochloric acid, the rude indium can be gained after being replaced and cast, and 4N-5N high purified indium will be gained after a purifaction under vacuum distillation and electrolysis. The extraction solution containing indium is dealed with by a technology, which contain deoxidized by a compound with alterative value-extracted with P2O4-replaced, according to this patent. Indium is extracted effectively and economically, the technology is easy, and a great breach can be gained by it.
Description
Technical field the invention belongs to a kind of method of extracting indium metal, zinc, bismuth from blast furnace dust (mud).
Background technology is carried out dust removal process and the solid waste that produces to the raw gas of blast furnace output, with the gas ash that is commonly called as of dry-method bag-type dust collecting device collecting, with the gas mud that is commonly called as of wet dust collector device collecting in the production process of blast furnace ironmaking.Gas ash (mud) is a particulate material, and the chemical ingredients more complicated outside the deironing, still contains unburn a small amount of non-ferrous metal such as charcoal and zinc, lead, indium completely.Material as ironmaking dust that certain Iron And Steel Company produces consists of: Fe28%, C18%, Zn9%, Pb1%, In0.012%, S0.6%, SiO
29%, CaO6%, Cl1～2%, moisture content 5-50%.
People one to think gas ash difficult utilize or utility value little, it is abandoned stores up in mountain region on every side, long-term wind and weather, the loss of waving arbitrarily causes bigger pollution to surrounding environment.China's output of steel is about annual 400000000 tons, occupies first place in the world, and the blast furnace ironmaking flue dust of 1 year output about 2,800,000 tons (butts), global flue dust quantum of output is bigger.Along with the raising of countries in the world to environmental requirement, to the blast furnace ironmaking flue dust innoxious, recycling treatment is urgent day by day.
Should be noted that especially, indium is a kind of crucial metallic substance in the industries such as hyundai electronics industry, telecommunications industry, value is tens even hundred times of common non-ferrous metals such as zinc, lead, if can develop the technology of extracting high purity indium from blast furnace dust, and is significant.
Yet, in the prior art, from gas ash (mud), extract the technology of high purity indium, do not appear in the newspapers so far.For the purpose of narration, following gas ash all comprises gas mud.
Summary of the invention purpose of the present invention is exactly to propose a kind of method of extracting indium metal, zinc, bismuth from the gas ash of blast furnace ironmaking, turn waste into wealth, realize the innoxious and recycling treatment of this solid waste, and can produce higher economic and social benefit, to remedy the deficiencies in the prior art.
This method of extracting indium metal, zinc, bismuth from blast furnace dust that the present invention proposes is characterized in that it contains following steps:
(1) gas ash is carried out reduction volatilization with rotary kiln adding coke powder and additive, make indium, zinc, lead, bismuth be the enrichment of gaseous oxidation thing form, shift in flue gas, ferrous metal then enters slag and reclaims;
The additive that adds in the rotary kiln is quartz or lime stone, and addition is controlled by basicity of slag.
(2) flue gas is gathered dust handle to capture zinc white, exhaust gas emission up to standard;
(3) zinc white is carried out the wet method dechlorination, specific practice is: add suitable NaOH liquid, repetitive scrubbing under 95 ℃ the temperature.
(4) product after the dechlorination is carried out neutral acidleach, control pH value is 5.2-5.4, and the metal infiltrations such as zinc that will be soluble in acid enter in the neutral solution, and indium, lead, bismuth then stay in neutral slag;
(5) neutral solution is purified to remove residual iron and cadmium etc., electrolysis gets zinc metal sheet then, and then founding gets the zinc ingot metal product;
(6) neutral slag is added the vitriol oil and carry out the leaching of secondary high temperature strong acid, soak slag and reclaim bismuth and lead.Leach liquor is used P for containing the indium feed liquid
204Extraction is stripped with hydrochloric acid, through displacement, founding gets thick indium, takes off assorted and electrolysis treatment gets 4N-5N high purity indium product through vacuum distilling again.
The surplus liquid of extraction in the extraction operation returns the neutral leaching of upper track operation.
The condition of secondary pickling operation is initial H
2SO
43-4N, 95 ℃.
(7) carry behind the indium soak slag again with hydrochloric acid leach, iron powder replacement reclaims bismuth metal, leaching residue be the conventional leady raw materials that refines.
The present invention smelts sophisticated rotary kiln reduction volatilization technology transplant in the nonferrous smelting technology in processing black solid refuse, use technical recipe and reasonably scrap build cleverly, guaranteed to produce efficiently, continuously and on a large scale, the output concentration ratio reaches and contains the indium oxide powder and zinc more than five times, extracts for the wet method in step down and lays a good foundation.It is a kind of light green powder that ironmaking dust gained oxide powder and zinc is handled in the rotary kiln reduction volatilization, except that containing non-ferrous metal zinc, lead, indium, also contains the detrimental impurity of 5-9%---chlorine and fluorine.It is existing that spelter works is neither can directly use this type of raw material electrogenesis in next life zinc, and the production zinc sulfate that can only use, two kinds of values of the product differ huge.The present invention then can go out electric zinc from the oxide powder and zinc direct production, has realized the important breakthrough of prior art.The present invention adopts the compound reduction-P that appraises at the current rate to containing the indium leach liquor
204Extraction-replacing process can extract indium cost-effectively, makes technology smooth and easy, obtains containing the thick indium of In＞99%.Prior art adopts chemical refining-repeatedly electrolytic technology to the refinement of thick indium, and is time-consuming expensive, and is difficult to obtain the high purity indium of 5N level, and the present invention adopts straight empty distillation-electrolysis process to accomplish that lower cost obtains stay-in-grade 4N-5N high purity indium.
The present invention also can be applicable to handle steel-smelting electric furnace flue dust, other zinc oxide material etc. and reclaims metals such as zinc, indium.
Appended drawings is a process flow sheet of the present invention.
Embodiment example one is an example with ironmaking dust that certain Iron And Steel Company mentioned above is produced (gas mud), and its material consists of: Fe28%, C18%, Zn9%, Pb1%, In0.012%, S0.6%, SiO
29%, CaO6%, Cl1%, moisture content 30%.
With such gas mud and coke powder ratio mixing in 100: 35, add limestone flour simultaneously as additive, under 1200 ℃ of temperature, carry out reduction volatilization with φ 2.1 * 32M rotary kiln and handle, feeding quantity is mixture～100t/d, coke powder～35t/d, output zinc white～10t/d, its composition be Zn～55% ±, Pb～9% ±, Bi～0.6%, In～0.07% ±, CL6-9%, kiln slag contains Zn＜0.5%, Pb＜0.2%, In＜0.002%, kiln slag carries out magnetic separation with the low intensity magnetic separation machine, obtaining containing Fe＞55% iron ore concentrate sells, non-magnetic separation product is sold the cement mill batching outward, and the metallic volatilization rate of recovery is Zn～85%, Pb～80%, In～70%, Bi～70%.
High chlorine zinc oxygen is carried out the alkali cleaning dechlorination, and process control condition is controlled washing lotion PH＞10 for adding suitable NaOH, 95 ℃ of temperature, and repetitive scrubbing is repeatedly to CL＜0.05%.
With zinc electrolytic solution (Zn50g/L, H
2SO
4150g/L) zinc white after the dechlorination is carried out neutrality and leach, terminal point pH5.2-5.4 is leached in control, make＞95% zinc entered solution by molten soaking, and allow In, Pb residue in the neutral slag.
Contain zinc lixiviating solution with conventional oxidation remove Fe, add zinc dust precipitation remove Cd, Ni, Co etc. and clean liquid, use conventional zinc electrodeposition method output zinc metal sheet again, founding gets zinc ingot metal, the output waste electrolyte returns for neutral and leaches simultaneously.
Neutral leached mud carried out high temperature, peracid secondary moltenly soak, the CONTROL PROCESS condition is sour H of beginning
2SO
43-4N, 95 ℃ of temperature, time 6h allows In and molten as far as possible the soaking of Zn in the neutral leached mud enter solution, and Pb then residues in the acid residue.
To containing In～500mg/L, Zn～80g/L, H
2SO
4The leaching solution of～2N carries out Fe
3+→ Fe
2+Reduction, in the box mixer-settler of level, add 30%P
204+ kerosene carries out multi-stage solvent extraction, with the multistage reextraction of 8NHCL, and control extraction and comparing of stripping, obtain containing the high indium liquid of In25～50g/L.
Adjust the pH to 2.5 of high indium strip liquor with alkali, add aluminium flake and carry out replacement(metathesis)reaction and the thick indium of output.
Thick indium is pressed group-founding and output contains the thick indium of In＞99.5%.
After thick indium removed impurity by vacuum distilling, technology was carried out electrorefining routinely, and output contains the high purity indium of In99.993-99.999%.
Carry acid residue behind the indium and adopt normal temperature HCl and leach, allow molten the soaking of Bi enter solution, by the iron plate displacement reclaim sponge bismuth, founding becomes thick bismuth, through with conventional pyro-refining output essence bismuth.The principal constituent of the residue that HCl is molten after soaking is PbSO
4, contain Pb＞35%, can make leady raw materials and sell to lead refinery outward.
Example two another Steel Plant's gas ash, composition is %:Fe36, C20, Zn6.5, Pb1, CaO8, SiO
23, In0.01, Cl1, moisture content 15%.With it in gas ash: the ratio (and allocating a small amount of high silica zinc oxide ore into) of coke powder=100: 30 and add φ 2.5 * 38M rotary kiln and carry out reduction volatilization.Day is handled 150 tons of gas ash, and gained zinc white composition is about %:Zn～50, Pb～10, In～0.06, CL6.Processing to this zinc white and kiln slag is identical with example one, and output iron ore concentrate, zinc, indium metal ingot and lead skim in view of the above.
Claims (6)
1, a kind of method of extracting indium metal, zinc, bismuth from blast furnace dust is characterized in that it contains following steps:
(1) gas ash is carried out reduction volatilization with rotary kiln adding coke powder and additive, make indium, zinc, lead, bismuth be the enrichment of gaseous oxidation thing form, shift in flue gas, ferrous metal then enters slag and reclaims;
(2) flue gas is gathered dust handle to capture zinc white, exhaust gas emission up to standard;
(3) zinc white is carried out the wet method dechlorination;
(4) product after the dechlorination is carried out neutral acidleach, control pH value is 5.2-5.4, and the metal infiltrations such as zinc that will be soluble in acid enter in the neutral solution, and indium, lead, bismuth then stay in neutral slag;
(5) neutral solution is purified to remove residual iron and cadmium etc., electrolysis gets zinc metal sheet then, and then founding gets the zinc ingot metal product;
(6) neutral slag is added the vitriol oil and carry out the leaching of secondary high temperature strong acid, soak slag and reclaim bismuth and lead.Leach liquor is used P for containing the indium feed liquid
204Extraction is stripped with hydrochloric acid, through displacement, founding gets thick indium, takes off assorted and electrolysis treatment gets 4N-5N high purity indium product through vacuum distilling again.
2, the method for from blast furnace dust, extracting indium metal, zinc, bismuth according to claim 1, it is characterized in that carrying behind the indium soak slag again with hydrochloric acid leach, iron powder replacement reclaims bismuth metal, leaching residue be the conventional leady raw materials that refines.
3, the method for extracting indium metal, zinc, bismuth from blast furnace dust according to claim 1 is characterized in that the additive that adds in the rotary kiln is quartz or lime stone, and addition is controlled by basicity of slag.
4, the method for extracting indium metal, zinc, bismuth from blast furnace dust according to claim 1, the surplus liquid of extraction that it is characterized in that extracting in the operation returns the neutral leaching of upper track operation.
5, the method for extracting indium metal, zinc, bismuth from blast furnace dust according to claim 1, the condition that it is characterized in that the secondary pickling operation is initial H
2SO
43-4N, 95 ℃.
6, the method for extracting indium metal, zinc, bismuth from blast furnace dust according to claim 1 is characterized in that it is to add suitable NaOH liquid, repetitive scrubbing under 95 ℃ the temperature that zinc white is carried out wet method dechlorination way.
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|---|---|---|---|
| CNB2007100660035A CN100557045C (en) | 2007-06-23 | 2007-06-23 | From blast furnace dust, extract the method for indium metal, zinc, bismuth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100660035A CN100557045C (en) | 2007-06-23 | 2007-06-23 | From blast furnace dust, extract the method for indium metal, zinc, bismuth |
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|---|---|
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| CN100557045C CN100557045C (en) | 2009-11-04 |
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| CN102492855A (en) * | 2011-12-28 | 2012-06-13 | 唐锡中 | Method for recovering valuable metal from solid waste material containing zinc |
| CN102586622A (en) * | 2012-03-20 | 2012-07-18 | 广西成源矿冶有限公司 | Method for producing electrolytic zinc by comprehensively recycling high-chlorine high-fluorine lead and antimony smelting waste residue |
| CN102618730A (en) * | 2012-02-23 | 2012-08-01 | 永兴县华鑫铅锡有限责任公司 | Process for separating materials containing indium, lead, silver, copper and bismuth |
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| CN103060552A (en) * | 2013-01-30 | 2013-04-24 | 昆明理工大学 | Method for extracting valuable metals from neutral leaching residue of zinc oxide |
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