CN115627367B - Method for cooperatively smelting lead and antimony - Google Patents
Method for cooperatively smelting lead and antimony Download PDFInfo
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- CN115627367B CN115627367B CN202211261190.3A CN202211261190A CN115627367B CN 115627367 B CN115627367 B CN 115627367B CN 202211261190 A CN202211261190 A CN 202211261190A CN 115627367 B CN115627367 B CN 115627367B
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- 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
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- 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
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
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- 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
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- 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
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
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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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Abstract
The invention discloses a method for cooperatively smelting lead and antimony, which comprises the following steps: uniformly mixing lead concentrate, antimony concentrate and lime, placing the mixture into a smelting furnace for oxygen-enriched enhanced smelting, producing antimony-enriched crude lead after smelting, obtaining refined lead and antimony-containing anode slime after electrolytic refining of the antimony-enriched crude lead, blowing the antimony-containing anode slime by a converter, leaching the antimony-containing anode slime by nitric acid to obtain lead nitrate leaching solution and antimony oxide powder, granulating the antimony oxide powder, placing the granulated antimony oxide powder into a reduction furnace, and introducing hydrogen for reduction smelting to prepare metallic antimony. The process carries out collaborative smelting on the lead concentrate and the antimony concentrate, fully utilizes the similar interaction reaction between lead and antimony, reduces the smelting temperature of the lead concentrate, and solves the problems that the heat utilization rate is low, the sulfur dioxide concentration in the flue gas is low, and the acid cannot be prepared in the volatilization smelting process of the antimony concentrate. In addition, hydrogen is adopted to replace carbonaceous reducing agent in the process of preparing crude antimony by reducing antimony oxide powder, so that the reduction temperature is reduced, the defects of high energy consumption, large amount of carbon dioxide generation, low direct yield caused by secondary volatilization of antimony in the traditional reduction smelting process are avoided, and the method has wide industrial application prospect.
Description
Technical Field
The invention belongs to the technical field of nonferrous metal metallurgy, and particularly relates to a method for cooperatively smelting lead and antimony.
Background
Antimony, which is a silvery, glossy, hard and brittle metal, has been widely used in the production of various flame retardants, alloys, ceramics, glass, semiconductor elements, and the like. The modern metallurgical production method of antimony can be divided into pyrometallurgy and hydrometallurgy, and mainly adopts a volatilization smelting-reduction smelting method in industry, namely, antimony concentrate firstly generates antimony oxide powder (antimonous oxide) through volatilization smelting, and the antimony oxide powder is subjected to reduction smelting to produce crude antimony. The conventional volatilizing equipment includes pit furnace, blast furnace, etc. However, the current volatilization smelting has more outstanding problems: (1) SO produced in the process 2 The flue gas concentration is low, and acid cannot be prepared; (2) The smelting process has low thermal efficiency and requires more expensive metallurgical coke to be consumed; (3) Charging port area of blast furnace is relatively largeLarge and can not be sealed, which causes the escape of smoke dust and fume and pollutes the environment. In addition, in the reduction smelting process, anthracite, charcoal, carbon powder and the like are used as reducing agents to perform reduction reaction with the antimonic powder at the temperature of 1000-1200 ℃ to prepare metallic antimony, wherein the consumption of the reducing agents is about 10-30% of the mass of the antimonic powder. The carbonaceous reducing agent is used, so that the reduction temperature is high, the volatilization of antimony is serious, and a large amount of carbon dioxide is generated, so that the 'two-carbon' strategic aim is not realized.
Chinese patent document CN 103173636B discloses a method for smelting antimony sulfide concentrate in an oxygen-enriched molten pool. The method comprises the steps of carrying out oxygen-enriched molten pool smelting on antimony concentrate, limestone, quartz sand and iron ore ingredients, obtaining precious antimony, smelting slag and flue gas after smelting, and producing crude antimony from the smelting slag through smelting reduction. Although the method realizes the self-heating smelting of the antimony sulfide concentrate, reduces the energy consumption, the sulfur content in the raw material is required to be more than 16 percent, and the concentration of sulfur dioxide in the generated flue gas only meets the acid making requirement.
Chinese patent document CN104278162 a discloses a selective bath smelting method for complex materials containing antimony and lead. Adding antimony-containing lead materials into pyrite, quartz and limestone, uniformly mixing, granulating, adding the mixture into antimony-containing oxide oxidation smelting slag for smelting, controlling the antimony content in the oxidation smelting slag to reduce most of lead, bismuth and silver into crude lead, and carrying out reduction smelting on high-antimony oxidation slag through a molten pool to produce crude antimony. Although the method realizes the comprehensive smelting of lead and antimony and the primary separation of lead and antimony, the smelting temperature in the process is high, waste gas is generated in the process of smelting antimony oxide slag by reduction in a molten pool, and the reduction smelting slag needs further treatment.
Chinese patent document CN101157994 a discloses a method for smelting lead-antimony ore in oxygen bath, which comprises the steps of carrying out smelting by adding the lead concentrate or the mixed ore of lead-antimony ore and lead concentrate and materials such as flux, smoke dust, solid fuel, etc. into molten oxidized bottom slag, and producing lead-antimony alloy and oxidized smelting slag for fuming treatment. Although the process has the advantages of short flow and capability of preparing acid by flue gas, the method has the problems of high smelting temperature, strict raw material granularity and moisture requirement and the like in the smelting process of a molten pool. In addition, the invention only provides the thought of a molten pool smelting process, and does not further separate the produced lead-antimony alloy and effectively enrich noble metals in the lead-antimony ore.
At present, the oxygen-enriched smelting technology of lead concentrate has relatively perfect theoretical and practical experience, and the volatilization smelting-reduction smelting process of antimony also has the problems of low concentration of flue gas and sulfur dioxide, high reduction smelting temperature and the like. If the smelting of the antimony concentrate can be integrated into a lead smelting system to realize the cooperative smelting of lead and antimony, the lead smelting temperature can be reduced, the problems of low sulfur dioxide concentration in flue gas, low heat utilization rate and the like in the volatilization smelting process of the antimony concentrate can be effectively avoided, and the method has important significance for sustainable development of lead and antimony smelting in China.
Disclosure of Invention
Aiming at the series of problems of low concentration of sulfur dioxide in flue gas, low heat utilization rate, high energy consumption, large production of carbon dioxide and the like in the reduction smelting process in the volatilization smelting process of antimony concentrate, the invention provides a method for cooperatively smelting lead and antimony.
The above object of the present invention is achieved by the following technical solutions:
a method for cooperatively smelting lead and antimony comprises the following steps:
(1) And uniformly mixing the lead concentrate, the antimony concentrate and the lime, placing the mixture into a smelting furnace, and introducing oxygen to perform oxygen-enriched enhanced smelting. Smelting to produce antimony-rich crude lead, high-temperature smoke dust and smelting slag. The oxidation reaction and lead and antimony type interaction reaction in the smelting process mainly comprise the following steps:
2PbS+3O 2 ＝2PbO+2SO 2
2Sb 2 S 3 +9O 2 ＝2Sb 2 O 3 +6SO 2
2Sb 2 S 3 +11O 2 ＝2Sb 2 O 5 +6SO 2
2Sb 2 O 5 +5PbS＝5Sb+4Pb+5SO 2
Sb 2 S 3 +2Sb 2 O 3 ＝6Sb+3SO 2
PbS+2PbO＝3Pb+SO 2
(2) And (3) carrying out electrolytic refining on the antimony-rich crude lead in the step (1) to obtain refined lead and antimony-rich anode slime, and carrying out blowing and nitric acid leaching on the antimony-rich anode slime by a converter to obtain lead nitrate leaching solution and antimony oxide powder.
(3) Granulating the antimony oxide powder in the step (2), then placing the granulated antimony oxide powder in a reduction furnace, and introducing hydrogen for reduction smelting to prepare metallic antimony. The chemical equations of the main occurrence of the reduction smelting process are as follows:
Sb 2 O 3 +3H 2 ＝2Sb+3H 2 O
2Sb 2 O 3 +3C＝4Sb+3CO 2
wherein, in the step (1), the mass ratio of the lead concentrate, the antimony concentrate and the lime is 100: (20-100): (3-10); in the oxygen-enriched reinforced smelting process, the oxygen-enriched concentration is 40-90%, the smelting temperature is 700-1050 ℃, and the smelting time is 1-3 h;
the hydrogen consumption in the step (3) is 105-130% of the chemical reaction equivalent required by completely converting the antimony compound in the antimonic oxide powder into metallic antimony, and the reduction smelting temperature is 650-850 ℃.
Preferably, the antimony concentrate in the step (1) is stibium ore or antimonite concentrate.
The high-temperature smoke dust generated by oxygen-enriched enhanced smelting in the step (1) is used for preparing sulfuric acid after waste heat utilization and smoke purification; and volatilizing smelting slag generated by oxygen-enriched intensified smelting in a fuming furnace for producing cement.
The converter converting temperature in the step (2) is 800-950 ℃.
The nitric acid leaching temperature in the step (2) is 20-90 ℃, the leaching time is 25-85 min, the liquid-solid ratio is 3:1 mL/g-8:1 mL/g, and the nitric acid dosage is 1.0-1.5 times of the reaction equivalent.
And (3) reacting the lead nitrate leaching solution in the step (2) with sulfuric acid to realize the regeneration of nitric acid, and returning the byproduct lead sulfate to the oxygen-enriched enhanced smelting process. The regeneration temperature of the nitric acid is room temperature, the stirring speed is 200-220 rmp, the sulfuric acid consumption is 0.95-1.2 times of the reaction equivalent, and the mass fraction of the sulfuric acid in the sulfuric acid solution is 70-98%.
In the step (3), the antimony oxide powder is firstly mixed with a small amount of carbonaceous reducing agent uniformly and then is granulated; the carbonaceous reducing agent is one or more of coke, anthracite and charcoal, and the dosage of the carbonaceous reducing agent is 0-5% of the mass of the antimony oxide powder.
Compared with the prior art, the technical scheme of the invention has the following positive effects:
according to the invention, antimony concentrate and lead concentrate are subjected to collaborative smelting, antimony-rich crude lead is produced by utilizing the interaction between lead and antimony, then refined lead and antimony-rich anode slime are obtained through electrolytic refining, the antimony-rich anode slime is subjected to converter blowing and nitric acid leaching to separate lead and antimony so as to obtain lead nitrate solution and antimony oxide powder, the antimony oxide powder is subjected to reduction smelting so as to obtain metallic antimony, and noble metals are enriched in noble lead. The method fully utilizes the similar interaction reaction between lead and antimony in the smelting process, reduces the smelting temperature, and simultaneously generates flue gas with high sulfur dioxide concentration, which can be used for preparing sulfuric acid, and the smelting slag can be used for producing cement after being treated. In the process of preparing metallic antimony by reducing and smelting antimony oxide powder, hydrogen is adopted to replace most carbonaceous reducing agents, and the method has the advantages of low reduction temperature, high reaction speed and no carbon dioxide generation. The process solves the problems of low heat utilization rate, low sulfur dioxide concentration in flue gas, no acid preparation, high reduction temperature, large carbon dioxide generation and the like in the traditional antimony concentrate volatilization smelting process, and has wide industrial application prospect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description of the drawings below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the method for the co-smelting of lead and antimony provided by the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages solved by the present invention more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Example 1
100g of lead concentrate, 20g of stibium and 3g of lime are evenly mixed and then placed in a smelting furnace, the temperature in the furnace is maintained at 700 ℃, 40% of oxygen-enriched air is introduced for smelting, 108.4g of antimony-enriched crude lead is obtained after 3h of reaction, and the concentration of sulfur dioxide in flue gas is 20%. And (3) carrying out electrolytic refining on the antimony-rich crude lead to obtain refined lead and antimony-containing anode slime, and blowing the antimony-containing anode slime by a converter at 800 ℃ to obtain the lead-rich antimony oxide. Then, nitric acid (industrial nitric acid with the concentration of about 65% is adopted in the embodiment of the invention) is adopted as a leaching agent, and lead-rich antimony oxide is leached under the conditions of 20 ℃ and a liquid-solid ratio of 3:1mL/g, the nitric acid dosage is 1 time of reaction equivalent and the leaching time is 25min, the lead leaching rate reaches 95.54%, and antimony oxide powder and lead nitrate leaching liquid are obtained after leaching. Then adding sulfuric acid into the lead nitrate leaching solution, realizing the regeneration of nitric acid under the conditions of room temperature, stirring rotation speed of 200rmp, sulfuric acid consumption of 0.95 times of reaction equivalent and sulfuric acid mass fraction of 98% in sulfuric acid solution, and returning the byproduct lead sulfate to the oxygen-enriched enhanced smelting process. And finally, uniformly mixing the antimony oxide powder and the coke according to the mass ratio of 100:3, granulating, placing the mixture in a magnetic boat, placing the magnetic boat in a tubular furnace, and maintaining the temperature in the furnace at 650 ℃. The hydrogen is introduced to carry out reduction reaction to prepare the metallic antimony, wherein the hydrogen consumption is 105 percent of the chemical reaction equivalent required by completely converting the antimony compound in the antimony oxide powder into the metallic antimony.
Example 2
The lead-rich antimony oxide in the example 1 is leached by nitric acid under the conditions of 70 ℃ and a liquid-solid ratio of 8:1mL/g, the nitric acid consumption is 1.5 times of the reaction equivalent and the leaching time is 85min, the lead leaching rate reaches 97.06 percent, and antimony oxide powder and lead nitrate leaching liquid are obtained after leaching. Then adding sulfuric acid into the lead nitrate leaching solution, realizing the regeneration of nitric acid under the conditions of room temperature, stirring rotation speed of 220rmp, sulfuric acid consumption of 1.2 times of reaction equivalent and sulfuric acid mass fraction of 70% in sulfuric acid solution, and returning the byproduct lead sulfate to the oxygen-enriched enhanced smelting process. And finally, uniformly mixing the antimony oxide powder and the anthracite at a mass ratio of 100:5, granulating, placing the mixture in a magnetic boat, placing the magnetic boat in a tubular furnace, and maintaining the temperature in the furnace at 850 ℃. The hydrogen is introduced to carry out reduction reaction to prepare the metallic antimony, wherein the hydrogen consumption is 110% of the chemical reaction equivalent required by completely converting the antimony compound in the antimony oxide powder into the metallic antimony.
Example 3
100g of lead concentrate, 50g of stibium and 5g of lime are evenly mixed and then placed in a smelting furnace, the temperature in the furnace is maintained at 1050 ℃, 80% of oxygen-enriched air is introduced for smelting, 136.3g of antimony-enriched crude lead is obtained after 1h of reaction, and the concentration of sulfur dioxide in flue gas is 23%. And (3) carrying out electrolytic refining on the antimony-rich crude lead to obtain refined lead and antimony-containing anode slime, and blowing the antimony-containing anode slime by a converter at 950 ℃ to obtain the lead-rich antimony oxide. And then, adopting nitric acid as a leaching agent, leaching lead-rich antimony oxide under the conditions of 90 ℃ and a liquid-solid ratio of 5:1mL/g, wherein the nitric acid dosage is 1.2 times of the reaction equivalent, and the leaching time is 45min, and obtaining antimony oxide powder and lead nitrate leaching liquid after leaching, wherein the lead leaching rate reaches 97.11%. Then adding sulfuric acid into the lead nitrate leaching solution, realizing the regeneration of nitric acid under the conditions of room temperature, stirring rotation speed of 200rmp, sulfuric acid consumption of 1 time of reaction equivalent and sulfuric acid mass fraction of 80% in sulfuric acid solution, and returning the byproduct lead sulfate to the oxygen-enriched enhanced smelting process. And finally, directly granulating the proper amount of antimony oxide powder, placing the granulated antimony oxide powder into a magnetic boat, and placing the magnetic boat into a tubular furnace, and maintaining the temperature in the furnace at 800 ℃. The hydrogen is introduced to carry out reduction reaction to prepare the metallic antimony, wherein the hydrogen consumption is 130 percent of the chemical reaction equivalent required by completely converting the antimony compound in the antimony oxide powder into the metallic antimony.
Example 4
The antimony oxide powder and charcoal leached by nitric acid in example 3 were mixed in a mass ratio of 100:5, granulated, placed in a magnetic boat, and placed in a tube furnace, and the temperature in the furnace was maintained at 700 ℃. The hydrogen is introduced to perform reduction reaction to prepare the metallic antimony, and the dosage of the metallic antimony is 115 percent of the chemical reaction equivalent required by completely converting the antimony compound in the antimony oxide powder into the metallic antimony.
Example 5
100g of lead concentrate, 100g of antimony gold concentrate and 10g of lime are uniformly mixed and then placed in a smelting furnace, the temperature in the furnace is maintained to be 900 ℃, 90% of oxygen-enriched air is introduced for smelting, 182.1g of antimony-enriched crude lead is obtained after 2h of reaction, and the concentration of sulfur dioxide in flue gas is 25%. And (3) carrying out electrolytic refining on the antimony-rich crude lead to obtain refined lead and antimony-containing anode slime, and blowing the antimony-containing anode slime by a converter at 950 ℃ to obtain the lead-rich antimony oxide. And leaching the lead-enriched antimony oxide by adopting nitric acid under the conditions that the temperature is 80 ℃, the liquid-solid ratio is 8:1mL/g, the nitric acid consumption is 1.5 times of the reaction equivalent, and the leaching time is 85min, wherein the lead leaching rate reaches 97.49%, and obtaining antimony oxide powder and lead nitrate leaching liquid after leaching. Then adding sulfuric acid into the lead nitrate leaching solution, realizing the regeneration of nitric acid under the conditions of room temperature, stirring rotation speed of 210rmp, sulfuric acid consumption of 1.2 times of reaction equivalent and sulfuric acid mass fraction of 90% in sulfuric acid solution, and returning the byproduct lead sulfate to the oxygen-enriched enhanced smelting process. And finally, uniformly mixing the antimony oxide powder and the anthracite at a mass ratio of 100:1, granulating, placing the mixture in a magnetic boat, placing the magnetic boat in a tubular furnace, and maintaining the temperature in the furnace at 750 ℃. The hydrogen is introduced to carry out reduction reaction to prepare the metallic antimony, wherein the hydrogen consumption is 130 percent of the chemical reaction equivalent required by completely converting the antimony compound in the antimony oxide powder into the metallic antimony.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (6)
1. The method for cooperatively smelting the lead and the antimony is characterized by comprising the following steps of:
(1) Uniformly mixing lead concentrate, antimony concentrate and lime, placing the mixture in a smelting furnace, introducing oxygen to perform oxygen-enriched enhanced smelting, and smelting to produce antimony-enriched crude lead, high-temperature smoke dust and smelting slag;
(2) Carrying out electrolytic refining on the antimony-rich crude lead in the step (1) to obtain refined lead and antimony-rich anode slime, and carrying out blowing and nitric acid leaching on the antimony-rich anode slime by a converter to obtain lead nitrate leaching liquid and antimony oxide powder;
(3) Granulating the antimony oxide powder in the step (2), then placing the granulated antimony oxide powder in a reduction furnace, and introducing hydrogen for reduction smelting to prepare metallic antimony;
wherein, in the step (1), the mass ratio of the lead concentrate, the antimony concentrate and the lime is 100: (20-100): (3-10); in the oxygen enrichment reinforced smelting process, the oxygen enrichment concentration is 40% -90%, the smelting temperature is 700 ℃ -1050 ℃, and the smelting time is 1-3 hours; the antimony concentrate is stibium ore or antimony gold concentrate;
the converting temperature of the converter in the step (2) is 800-950 ℃; the nitric acid leaching temperature is 20-90 ℃, the leaching time is 25-85 min, the liquid-solid ratio is 3:1 mL/g-8:1 mL/g, and the nitric acid consumption is 1.0-1.5 times of the reaction equivalent;
the hydrogen consumption in the step (3) is 105% -130% of the chemical reaction equivalent required by completely converting the antimony compound in the antimony oxide powder into metallic antimony, and the reduction smelting temperature is 650 ℃ -850 ℃.
2. The method for collaborative smelting of lead and antimony according to claim 1, wherein the high-temperature smoke dust generated by oxygen-enriched enhanced smelting in the step (1) is used for preparing sulfuric acid after waste heat utilization and smoke purification; and/or volatilizing smelting slag generated by oxygen-enriched enhanced smelting by a fuming furnace for producing cement.
3. The method for collaborative smelting of lead and antimony according to claim 1, wherein the lead nitrate leaching solution in the step (2) reacts with sulfuric acid to realize the regeneration of nitric acid, and the byproduct lead sulfate returns to the oxygen-enriched enhanced smelting process.
4. The method for cooperatively smelting lead and antimony according to claim 3, wherein the regeneration temperature of nitric acid is room temperature, the stirring speed is 200-220 rmp, the sulfuric acid consumption is 0.95-1.2 times of the reaction equivalent, and the sulfuric acid mass fraction in the sulfuric acid solution is 70-98%.
5. The method for collaborative smelting of lead and antimony according to claim 1, wherein in the step (3), antimony oxide powder is mixed with a carbonaceous reducing agent with the amount of 0-5% of the mass of the antimony oxide powder uniformly and then granulated.
6. The method according to claim 5, wherein the carbonaceous reducing agent is one or more of coke, anthracite and charcoal.
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| CN101157994A (en) * | 2007-10-24 | 2008-04-09 | 柳州华锡集团有限责任公司 | Oxygen fused bath smelting method for lead-antimony ore |
| CN103820643A (en) * | 2014-03-04 | 2014-05-28 | 云南驰宏锌锗股份有限公司 | Method for production of bullion lead by two-section smelting processing on lead anode slime |
| CN105780060A (en) * | 2016-03-11 | 2016-07-20 | 昆明理工大学 | Method for electrolytic separation of lead-antimony alloy through deep-eutectic solvent |
| CN109097587A (en) * | 2018-10-18 | 2018-12-28 | 郴州市金贵银业股份有限公司 | A kind of method of precious metal in high efficiente callback lead anode slurry |
| WO2020132751A1 (en) * | 2018-12-27 | 2020-07-02 | Compañia Minera Pargo Minerals Spa | Method for obtaining antimony trioxide (sb2o3), arsenic trioxide (as2o3) and lead (pb) |
| CN112662894A (en) * | 2020-11-17 | 2021-04-16 | 中国恩菲工程技术有限公司 | Method for producing antimony from antimony oxide powder |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101157994A (en) * | 2007-10-24 | 2008-04-09 | 柳州华锡集团有限责任公司 | Oxygen fused bath smelting method for lead-antimony ore |
| CN103820643A (en) * | 2014-03-04 | 2014-05-28 | 云南驰宏锌锗股份有限公司 | Method for production of bullion lead by two-section smelting processing on lead anode slime |
| CN105780060A (en) * | 2016-03-11 | 2016-07-20 | 昆明理工大学 | Method for electrolytic separation of lead-antimony alloy through deep-eutectic solvent |
| CN109097587A (en) * | 2018-10-18 | 2018-12-28 | 郴州市金贵银业股份有限公司 | A kind of method of precious metal in high efficiente callback lead anode slurry |
| WO2020132751A1 (en) * | 2018-12-27 | 2020-07-02 | Compañia Minera Pargo Minerals Spa | Method for obtaining antimony trioxide (sb2o3), arsenic trioxide (as2o3) and lead (pb) |
| CN112662894A (en) * | 2020-11-17 | 2021-04-16 | 中国恩菲工程技术有限公司 | Method for producing antimony from antimony oxide powder |
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