CN112981119A - Lead recovery process of lead chloride slag - Google Patents
Lead recovery process of lead chloride slag Download PDFInfo
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- CN112981119A CN112981119A CN201911288139.XA CN201911288139A CN112981119A CN 112981119 A CN112981119 A CN 112981119A CN 201911288139 A CN201911288139 A CN 201911288139A CN 112981119 A CN112981119 A CN 112981119A
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- lead
- slag
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- desulfurized gypsum
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- 239000002893 slag Substances 0.000 title claims abstract description 87
- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 title claims abstract description 49
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 41
- 239000010440 gypsum Substances 0.000 claims abstract description 41
- 239000000203 mixture Substances 0.000 claims abstract description 29
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011575 calcium Substances 0.000 claims abstract description 13
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 13
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000460 chlorine Substances 0.000 claims abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 239000011593 sulfur Substances 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 7
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 7
- 239000001110 calcium chloride Substances 0.000 claims abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000571 coke Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 150000002739 metals Chemical class 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229910052797 bismuth Inorganic materials 0.000 description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
- C01B17/506—Preparation of sulfur dioxide by reduction of sulfur compounds of calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/12—Acids or salts thereof containing halogen in the anion
- C04B22/124—Chlorides of ammonium or of the alkali or alkaline earth metals, e.g. calcium chloride
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/005—Preliminary treatment of scrap
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
- C22B13/025—Recovery from waste materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A lead recovery process of lead chloride slag comprises the following steps; 1) pretreatment: drying the desulfurized gypsum slag in a rotary kiln; 2) and (3) detection: detecting the content of chlorine and lead in the lead chloride slag; detecting the content of calcium and sulfur in the desulfurized gypsum residue; detecting the carbon content in the reducing agent; 3) preparing materials: mixing desulfurized gypsum slag and lead chloride slag according to the proportion of the mol ratio of the calcium to the chloride in the desulfurized gypsum slag (1-1.2): 2 to obtain a first mixture, and mixing a reducing agent and the first mixture according to the proportion of the mol ratio of the carbon in the reducing agent to the sum of the lead content of the lead chloride slag in the first mixture and the sulfur content of the desulfurized gypsum slag (1.2-1.5): 2 to obtain a second mixture; 4) smelting: and putting the second mixture into a reverberatory furnace to be smelted to obtain calcium chloride slag and a crude lead product. The process can simultaneously change the lead chloride slag and the desulfurized gypsum slag into valuable, and the prepared crude lead product has good quality, is beneficial to further development and processing, has low processing cost in the whole process, and is beneficial to industrialized popularization and production.
Description
Technical Field
The invention relates to the technical field of lead chloride slag treatment, in particular to a lead recovery process of lead chloride slag.
Background
Lead chloride slag is a solid dangerous waste generated by chlorine introduction and lead removal in the bismuth pyrometallurgy process, is a crystal massive slag with chlorine color and no odor, is sublimated into a gaseous state to volatilize when being heated to above 950 ℃, is soluble in water, and has no good process for treating the lead chloride slag until now. Lead content of lead chloride slag is generally more than 70%, and the lead chloride slag contains a small amount of valuable metals such as bismuth, silver, antimony and the like, improper utilization is great waste of national resources, desulfurized gypsum slag is a general solid waste generated by adding lime in a tail gas desulfurization process and precipitating sodium sulfite generated by sulfur dioxide in the tail gas desulfurization process, and then performing filter pressing, in recent years, people always seek a reasonable utilization way for desulfurized gypsum slag, at present, most of desulfurized gypsum slag in developed countries is recycled, the domestic desulfurized gypsum slag recycling technology is still in a starting stage, one part of desulfurized gypsum slag is used as an additive material for producing building materials such as cement and the like, most of desulfurized gypsum slag is directly discarded and discharged, calcium content of desulfurized gypsum slag is generally about 40%, and the desulfurized gypsum slag contains a small amount of valuable metals such as lead, silver, bismuth, zinc, antimony and the like, and the waste resources are directly discharged, and simultaneously great burden is caused to the environment, therefore, the invention aims to develop a method for simultaneously recycling the lead chloride slag and the lead chloride slag so as to improve the smelting recovery rate and the resource utilization rate of enterprises, reduce the environmental pressure and improve the economic benefit.
Disclosure of Invention
The invention aims to provide a lead recovery process for lead chloride slag, which is beneficial to reducing the environmental protection pressure of smelting enterprises, simultaneously recovers valuable metals such as lead and the like in desulfurized gypsum slag and lead chloride slag, improves the metal recovery rate and improves the enterprise benefit.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a lead recovery process of lead chloride slag comprises the following steps;
1) pretreatment: drying the desulfurized gypsum slag in a rotary kiln;
2) and (3) detection: detecting the content of chlorine and lead in the lead chloride slag; detecting the content of calcium and sulfur in the desulfurized gypsum residue; detecting the carbon content in the reducing agent;
3) preparing materials: mixing desulfurized gypsum slag and lead chloride slag according to the proportion of the mol ratio of the calcium to the chloride in the desulfurized gypsum slag (1-1.2): 2 to obtain a first mixture, and mixing a reducing agent and the first mixture according to the proportion of the mol ratio of the carbon in the reducing agent to the sum of the lead content of the lead chloride slag in the first mixture and the sulfur content of the desulfurized gypsum slag (1.2-1.5): 2 to obtain a second mixture;
4) smelting: and putting the second mixture into a reverberatory furnace, raising the temperature to 1200-1300 ℃, blowing oxygen for smelting for 3-4 hours after the materials are molten, preserving heat, standing, and separating to obtain calcium chloride slag and crude lead products.
Further, in the step 3), the lead chloride slag and the desulfurized gypsum slag are mixed according to the mol ratio of the chlorine in the lead chloride slag to the calcium in the desulfurized gypsum slag of 1.2:2 to obtain a first mixture.
Further, in the step 3), the reducing agent and the first mixture are mixed according to the molar ratio of 1.4:2 of the sum of the carbon in the reducing agent, the lead of the lead chloride slag in the first mixture and the content of the desulfurized lime to obtain a second mixture.
Further, in the step 3), the reducing agent is pulverized coal or coke particles containing 75-80% of carbon.
Further, in the step 4), the amount of oxygen is blown in based on stirring the lead liquid.
The reaction equation involved in the production process is as follows:
2CaSO4+C＝2CaO+2SO2+CO2
PbCl2+CaO＝CaCl2+PbO
2PbO+C＝2Pb+CO2
has the advantages that: according to the lead recovery process of the lead chloride slag, the lead chloride slag and the desulfurized gypsum slag are mixed with a reducing agent and then smelted in the reverberatory furnace, lead is discharged from the reverberatory furnace in a crude lead form, valuable metals in the lead chloride slag and the desulfurized gypsum slag are enriched in the crude lead, so that the unified recovery of the valuable metals is facilitated, chlorine and calcium are combined to generate calcium chloride slag which can be used as a building raw material for selling, sulfur is reduced into sulfur dioxide and is merged into bottom blowing furnace flue gas for preparing acid through the flue gas, so that the total emission of enterprises is effectively reduced, the desulfurized gypsum slag and the lead chloride slag which have great harm to the environment can be simultaneously treated, the valuable metals in the desulfurized gypsum slag and the lead chloride slag are recovered, waste is changed into valuable materials, and the environmental protection pressure is reduced; the prepared crude lead product has good quality, is beneficial to further development and processing, has low processing cost in the whole process, and is beneficial to industrialized popularization and production.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Examples
The lead recovery process of the lead chloride slag comprises the following steps;
1) pretreatment: drying the desulfurized gypsum slag in a rotary kiln;
2) and (3) detection: detecting the content of chlorine and lead in the lead chloride slag; detecting the content of calcium and sulfur in the desulfurized gypsum residue; detecting the carbon content in the reducing agent; in the present embodiment, the first and second electrodes are,
3) preparing materials: mixing desulfurized gypsum slag and lead chloride slag according to the proportion of the mol ratio of calcium in desulfurized gypsum slag to chloride in lead chloride slag of about 1.2:2 to obtain a first mixture, and mixing a reducing agent and the first mixture according to the proportion of the mol ratio of carbon in the reducing agent to the sum of the content of lead in lead chloride slag in the first mixture and the content of sulfur in desulfurized gypsum slag of about 1.4:2 to obtain a second mixture; specifically, the desulfurized gypsum residue used in the embodiment contains 28% of calcium and 17% of sulfur after being dried and dehydrated; lead chloride slag contains 72% of lead and 26% of chlorine; the pulverized coal contains 75% of carbon. Mixing 12 tons of gypsum residues, 20 tons of lead chloride residues and 1.5 tons of pulverized coal, and then uniformly mixing the desulfurized gypsum residues and the lead chloride residues with pulverized coal containing 75% of carbon to obtain a second mixture;
4) smelting: and putting the second mixture into a reverberatory furnace, raising the temperature to 1200-1300 ℃, blowing oxygen gas after the materials are melted, smelting for 4 hours, preserving the temperature, standing, and separating to obtain calcium chloride slag and crude lead products, wherein the oxygen gas amount is based on stirring of the lead liquid. The obtained crude lead product has a lead grade of 93 percent, the calcium chloride slag contains 0.87 percent of lead and 79g/t of silver, and the crude lead product can be used as a better raw material for subsequent development and utilization.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A lead recovery process of lead chloride slag is characterized by comprising the following steps;
1) pretreatment: drying the desulfurized gypsum slag in a rotary kiln;
2) and (3) detection: detecting the content of chlorine and lead in the lead chloride slag; detecting the content of calcium and sulfur in the desulfurized gypsum residue; detecting the carbon content in the reducing agent;
3) preparing materials: mixing desulfurized gypsum slag and lead chloride slag according to the proportion of the mol ratio of the calcium to the chloride in the desulfurized gypsum slag (1-1.2): 2 to obtain a first mixture, and mixing a reducing agent and the first mixture according to the proportion of the mol ratio of the carbon in the reducing agent to the sum of the lead content of the lead chloride slag in the first mixture and the sulfur content of the desulfurized gypsum slag (1.2-1.5): 2 to obtain a second mixture;
4) smelting: and putting the second mixture into a reverberatory furnace, raising the temperature to 1200-1300 ℃, blowing oxygen for smelting for 3-4 hours after the materials are molten, preserving heat, standing, and separating to obtain calcium chloride slag and crude lead products.
2. The lead recovery process of the lead chloride slag according to claim 1, characterized in that in the step 3), the lead chloride slag and the desulfurized gypsum slag are mixed according to the molar ratio of chlorine in the lead chloride slag to calcium in the desulfurized gypsum slag of 1.2:2 to obtain a first mixture.
3. The lead recovery process of lead chloride slag according to claim 1, characterized in that in step 3), the reducing agent and the first mixture are mixed according to a molar ratio of 1.4:2 of the sum of the contents of carbon in the reducing agent, lead in the lead chloride slag in the first mixture and desulfurized lime to obtain a second mixture.
4. The lead recovery process of lead chloride slag according to claim 1, wherein in the step 3), the reducing agent is pulverized coal or coke particles containing 75-80% of carbon.
5. The process for recovering lead from lead chloride slags as claimed in claim 1, wherein the amount of oxygen blown in step 4) is based on stirring the lead liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288139.XA CN112981119A (en) | 2019-12-15 | 2019-12-15 | Lead recovery process of lead chloride slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288139.XA CN112981119A (en) | 2019-12-15 | 2019-12-15 | Lead recovery process of lead chloride slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112981119A true CN112981119A (en) | 2021-06-18 |
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| CN201911288139.XA Pending CN112981119A (en) | 2019-12-15 | 2019-12-15 | Lead recovery process of lead chloride slag |
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| CN (1) | CN112981119A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397214A (en) * | 2013-07-29 | 2013-11-20 | 中南大学 | Low-carbon treatment method of ardealite in pyrometallurgy of nonferrous metal |
| CN103866137A (en) * | 2014-01-16 | 2014-06-18 | 北京科技大学 | Reduction and harmless resource disposal method of heavy metal waste gypsum |
| CN104032148A (en) * | 2014-06-06 | 2014-09-10 | 白银有色集团股份有限公司 | Pyrogenic process copper smelting matte slagging method based on novel fusing agent |
| CN104846214A (en) * | 2015-04-21 | 2015-08-19 | 云南驰宏锌锗股份有限公司 | Method for processing heavy metal-containing gypsum residue by oxygen-rich top-blown lead smelting furnace |
| CN110055412A (en) * | 2019-04-28 | 2019-07-26 | 广东飞南资源利用股份有限公司 | A kind of method of cupric tin electroplating sludge and desulfurized gesso of flue gas slag cooperative disposal and synthetical recovery copper and tin |
-
2019
- 2019-12-15 CN CN201911288139.XA patent/CN112981119A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397214A (en) * | 2013-07-29 | 2013-11-20 | 中南大学 | Low-carbon treatment method of ardealite in pyrometallurgy of nonferrous metal |
| CN103866137A (en) * | 2014-01-16 | 2014-06-18 | 北京科技大学 | Reduction and harmless resource disposal method of heavy metal waste gypsum |
| CN104032148A (en) * | 2014-06-06 | 2014-09-10 | 白银有色集团股份有限公司 | Pyrogenic process copper smelting matte slagging method based on novel fusing agent |
| CN104846214A (en) * | 2015-04-21 | 2015-08-19 | 云南驰宏锌锗股份有限公司 | Method for processing heavy metal-containing gypsum residue by oxygen-rich top-blown lead smelting furnace |
| CN110055412A (en) * | 2019-04-28 | 2019-07-26 | 广东飞南资源利用股份有限公司 | A kind of method of cupric tin electroplating sludge and desulfurized gesso of flue gas slag cooperative disposal and synthetical recovery copper and tin |
Non-Patent Citations (1)
| Title |
|---|
| 汪立果 编著, 冶金工业出版社 * |
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