CN117448578A - Comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals - Google Patents
Comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals Download PDFInfo
- Publication number
- CN117448578A CN117448578A CN202311415462.5A CN202311415462A CN117448578A CN 117448578 A CN117448578 A CN 117448578A CN 202311415462 A CN202311415462 A CN 202311415462A CN 117448578 A CN117448578 A CN 117448578A
- Authority
- CN
- China
- Prior art keywords
- copper
- lead
- silver
- bismuth
- blowing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C01B19/00—Selenium; Tellurium; Compounds thereof
-
- 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
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals 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
- 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
- C22B15/00—Obtaining copper
-
- 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
- C22B30/06—Obtaining bismuth
-
- 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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
-
- 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
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining by applying a vacuum
-
- 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)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals, which adopts a rotary top-blown furnace method to copper-lead anode slimeSynergistic treatment, creatively realizing open circuit and centralized treatment of copper and lead in two smelting systems, realizing short-process productization of metal, reducing backlog of noble metal process, obtaining high-quality intermediate product and multi-metal comprehensive recovery, and really achieving complementary advantages of synergistic smelting 。
Description
Technical Field
The invention relates to the technical field of nonferrous metal smelting. In particular to a comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals.
Background
Copper anode slime and lead anode slime are anode slime products produced in the copper and lead electrolysis process. The copper anode slime is rich in noble metals such as gold and silver, rare metals such as selenium and tellurium, base metals such as copper and lead, and the lead anode slime also contains a higher amount of valuable metals. Therefore, the efficient green recovery of valuable noble metals and non-noble metals from anode slime has been a research hotspot in the industry.
The lead anode slime is treated by adopting a reduction-blowing-liquation copper removal-tellurium removal-vacuum distillation-silver separation-silver electrolysis process to recover silver. At present, copper anode slime is treated by adopting a rotary top-blown furnace process, and other metals, lead, antimony, bismuth and the like of the copper anode slime are not effectively recovered except gold and silver which are initially extracted in the process; and the lead anode slime is treated by adopting a reduction-blowing-liquation copper removal-tellurium removal-vacuum distillation-silver separation-silver electrolysis process to recover silver, lead and bismuth alloy is produced by vacuum distillation and is recovered by electrolysis, the electrolytic high-bismuth anode slime is reduced by a reduction furnace to produce silver-containing high-bismuth alloy, and finally high-bismuth alloy is produced by vacuum distillation and refined bismuth is produced by bismuth refining. The technology has the following problems: 1) The process flow is long, the direct yield and recovery rate of noble and rare (scattered) metals are low, valuable metals are backlogged in the flow, and the valuable metals cannot be effectively utilized; 2) The reduction furnace is used for full reduction, all valuable metals (Pb, sb, cu, bi, ag and the like) are reduced, the antimony content in the anode slime is high, the time for blowing antimony is long when the reduced alloy is blown, the energy consumption is high, and the bismuth content in the antimony white is high, so that the quality of the antimony white product is low; 3) Copper contained in the anode slime is required to be treated by liquation copper removal, and alloy produced by copper removal is required to be additionally treated; 4) And the lead-bismuth materials produced by vacuum distillation can be separated by electrolysis. In addition, because of the differences of smelting raw materials and processes of copper and lead, the metal types of copper and lead anode slime are close, and the content of metals such as gold, silver, selenium, tellurium, antimony, bismuth and the like are greatly different. When an anode slime is treated singly, partial metals cannot be recovered or the recovery rate is low due to the lower content of partial metals; after copper and lead anode slime are cooperatively treated, the average content of various valuable metals is in a reasonable range, so that the valuable metals are easy to recycle.
Therefore, development of copper anode slime and lead anode slime cooperative treatment technology and equipment are urgently needed, treatment procedures are reduced, technological processes are shortened, direct recovery rate and recovery rate of noble metals are improved, valuable metals are fully recovered, energy consumption is reduced, carbon emission is reduced, and efficient and green recovery of valuable metals in copper-lead anode slime is achieved. Along with the gradual enhancement of comprehensive recycling and diversified development of resources in nonferrous metal smelting, the cooperative treatment of various anode slime such as copper, lead and the like gradually becomes the development trend of recycling valuable metals from the anode slime.
Disclosure of Invention
Aiming at the technical problems that valuable metals are difficult to comprehensively recover, high-value noble (scattered) metals are treated and dispersed, the capability of treatment equipment is small and the flow is long in the process of respectively treating copper-lead anode slime in the existing copper-lead smelting system, the invention aims to provide a comprehensive recovery process for the polymetallic by cooperative treatment of copper-lead anode slime.
The technical scheme for solving the technical problems is as follows: a comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals comprises the following steps:
copper anode slime is pre-decoppered by means of pressurized acid leaching, selenium and tellurium are recovered from the decoppered liquid, the decoppered slime is dried by microwaves and then is sent into a rotary top blowing furnace, scrap iron, quartz stone and coke are added for reduction smelting, after the materials are fully melted and reacted, the melt is divided into two layers, the upper layer is smelting slag, the main component is Pb, the lower layer is selenium-enriched noble lead material, and most of selenium is SeO 2 Volatilizing the form into smelting flue gas;
step two, the upper layer smelting slag produced in the step one is scraped completely, and the selenium-rich noble lead alloy is continuously left in a rotary top-blown furnace and is oxidized and blown by introducing compressed air; pb, cu, sb and Bi impurities are oxidized into oxides which are insoluble in Au and Ag in the blowing process, the oxides float on the surface of the melt relatively lightly to form preliminary blowing slag and are removed, and the content of Ag is kept below 0.7%; in addition, se which is not volatilized in the smelting process is continuously oxidized into volatile selenate in the oxidation converting process and enters converting smoke, and Au and Ag are further enriched in a gold-silver alloy phase in the oxidation converting process, so that recovery of Ag in the converting process is realized;
step three, cleaning the front-stage converting slag floating on the surface of the melt in the step two, decoppering the high-copper converting slag generated in the later stage of converting to obtain lead-rich bismuth-antimony slag, casting gold-silver alloy on an anode plate to form a silver anode plate, and conveying the silver anode plate to a silver anode plate electrolysis workshop to recover gold and silver;
adding lead anode slime into a rotary top-blowing furnace for reduction smelting, slagging off after the reduction smelting blowing to obtain an antimony-rich noble lead alloy melt, and keeping the lead alloy melt in the rotary top-blowing furnace for blowing to oxidize Sb to form Sb 2 O 3 Entering smoke dust, and blowing antimony to leave high copper and noble bismuth alloy;
melting the high-copper noble bismuth alloy produced in the step four at 650 ℃ and directly putting the high-copper noble bismuth alloy into a novel vacuum furnace, and carrying out primary vacuum distillation to ensure that copper and silver which are difficult to volatilize are mainly enriched in residues produced by the vacuum furnace to form copper-silver-containing materials, tellurium is enriched in condensate to form tellurium-rich alloy, lead and bismuth are mainly enriched in the volatile matters, and part of silver is volatilized into silver steam, doped primary lead and bismuth volatile matters under the high-temperature vacuum condition to form high-silver low-impurity lead bismuth alloy;
step six, putting the high-silver low-impurity lead bismuth alloy produced in the step five into a conventional continuous vacuum furnace, carrying out secondary vacuum distillation, further enriching copper and silver into copper-silver-containing materials, volatilizing and condensing bismuth to obtain crude bismuth, further purifying the high-silver lead bismuth alloy, returning to the vacuum furnace for vacuum distillation, condensing and collecting to obtain crude bismuth, and further enriching silver into the copper-silver materials;
step seven, the smelting slag, the earlier-stage smelting slag and the lead-rich bismuth-antimony alloy obtained after copper removal of the high-copper converting slag generated by the copper anode slime treatment systems in the step two and the step three are integrated into the lead anode slime treatment system in the step two for centralized treatment, and the lead-bismuth-antimony and other valuable metals in the lead-bismuth-antimony alloy are comprehensively separated and recovered; and (3) the copper and silver-containing materials in the treatment process of the lead anode slime in the step five are combined into the copper anode slime treatment system in the step four, so that further enrichment and recovery of copper and silver are realized.
Based on the technical scheme, the invention can be further improved as follows:
and further, continuously keeping the selenium-rich noble lead alloy in the second step in a rotary top blowing furnace, introducing compressed air for oxidation blowing, controlling the furnace temperature in the blowing process to be 650-850 ℃, and keeping the furnace temperature in the melting stage to be more than 1000 ℃.
And in the fourth step, the lead alloy melt is kept in a rotary top blowing furnace to keep the melt temperature at 900-950 ℃ for blowing.
And in the fifth step, the high copper noble bismuth alloy is melted at 650 ℃ and directly put into a novel vacuum furnace, the evaporation temperature is 950-1000 ℃, and the vacuum degree is 20-50 Pa.
And step six, further purifying the high silver lead bismuth alloy, returning to a vacuum furnace, and carrying out vacuum distillation for 2-3 times.
The beneficial effects of the invention are as follows: copper-lead anode slime is cooperatively treated by adopting a rotary top-blown furnace method, thereby creatively realizing open-circuit and centralized treatment of copper-lead in two smelting systems, realizing short-process productization of metals, reducing backlog of noble metal processes, obtaining high-quality intermediate products and comprehensive recovery of multiple metals, and really achieving complementary advantages of cooperative smelting.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1, the comprehensive recovery process for the copper-lead anode slime co-treatment comprises the following steps:
copper anode slime is pre-decoppered by means of pressurized acid leaching, selenium and tellurium are recovered from the decoppered liquid, the decoppered slime is dried by microwaves and then is sent into a rotary top blowing furnace (the main components are Pb:41.23%, sb:4.78%, bi:5.89%, ag:7.98%, se:5.62% and Te: 3.97%), scrap iron, quartz stone and coke are added for reduction smelting, after the materials are fully melted and reacted, the melt is divided into two layers, the upper layer is smelting slag, and the main components are Pb and SiO 2 (main component: pb:53.57%, siO) 2 :10.98%, sb:8.16 percent of Bi, 4.4 percent of selenium-rich noble lead material is arranged on the lower layer, the main components are Pb, cu, se, sb, bi and the like (main components: ag 35.49%, pb 20.74%, se 14.84%, te: 12.97%). In addition, the volatilization temperature of selenium is relatively low, so most of selenium is expressed as SeO 2 Volatilizing into smelting fume.
And step two, the upper layer smelting slag produced in the step one is scraped completely, and the selenium-rich noble lead alloy is continuously left in a rotary top-blowing furnace and is oxidized and blown by introducing compressed air. The furnace temperature in the blowing process is controlled between 650 and 850 ℃, and the furnace temperature in the melting stage is kept above 1000 ℃. Impurities such as Pb, cu, sb and Bi are oxidized into oxides insoluble in Au and Ag in the blowing process, and the oxides float on the surface of the melt relatively lightly to form preliminary blowing slag for removal, wherein the content of Ag is usually kept below 0.7%. In addition, se which is not volatilized in the smelting process can be continuously oxidized into volatile selenate (SeO) in the oxidation blowing process 2 ) The Au and Ag are further enriched into the gold-silver alloy phase in the oxidation converting process when entering the converting flue gasThe gold content is up to 96.26% and 2190 g/t. The recovery rate of Ag in the blowing process is up to more than 98.5 percent.
And thirdly, cleaning the front-stage converting slag floating on the surface of the melt in the second step, removing copper from the high-copper converting slag to obtain lead-rich bismuth-antimony slag, casting the gold-silver alloy into an anode plate to form a silver anode plate, and conveying the silver anode plate to a silver anode plate electrolysis workshop to recover gold and silver. The silver anode plate contains more than 96% of silver and 1-2% of gold, and the content of impurities such as Pb, sb, bi, se and Te is controlled below 100ppm by controlling about 1.5% of copper.
And step four, adding the lead anode slime into a rotary top blowing furnace for reduction smelting, and slagging off after the reduction smelting blowing to obtain an antimony-rich noble lead alloy melt. And the melt is kept in a rotary top blowing furnace to keep the temperature of the melt at 900-950 ℃ for blowing, and Sb is oxidized to form Sb 2 O 3 And the high copper and high bismuth (noble lead) alloy is remained after the antimony is blown into the smoke dust. The main components of the antimony-rich noble lead alloy are as follows: pb:61.15%, sb:22.45%, bi:8.62%, cu:2.38%, ag:2.94%; the main components of the high copper noble lead alloy are as follows: 58.76% of Pb: 4.89%, bi:20.54%, cu:5.78%, ag:6.23%. The enrichment of copper, lead and bismuth and the separation of antimony are well realized; the main components of the high copper noble bismuth alloy are as follows: bi:79.45%, cu:4.93%, ag:5.10%, pb:4.34 percent, and realizes the enrichment of silver, copper and bismuth and the separation of lead.
And fifthly, melting the high copper noble bismuth (noble lead) alloy produced in the step four at about 650 ℃ and directly putting the high copper noble bismuth (noble lead) alloy into a novel vacuum furnace, wherein the evaporation temperature is 950-1000 ℃ and the vacuum degree is 20-50 Pa, after primary vacuum distillation, copper and silver which are not easy to volatilize are mainly enriched in residues produced by the vacuum furnace to form copper and silver-containing materials, tellurium is enriched in condensate to form tellurium-enriched alloy (main components: te:25-30%, pb:55-60% and Bi: 8-10%), lead and bismuth are mainly enriched in volatile matters, and the high silver low-impurity lead bismuth alloy is formed because part of silver volatilizes into silver steam and is doped with primary lead and bismuth volatile matters under the high temperature vacuum condition. The high copper noble bismuth alloy residues mainly comprise the following components: ag:45.87%, cu:24.97%, pb 8.90%, sb:12.97%; the noble bismuth volatile mainly comprises the following components: pb:79.34%, bi:9.87%, sb:8.32%. The main components of the high copper noble lead alloy residues are as follows: ag:45.87%, cu:24.97%, pb 8.90%, sb:12.97%; the noble lead volatile mainly comprises the following components: pb:79.34%, bi:9.87%, sb:8.32%. The main components of the noble bismuth alloy residues are as follows: ag:54.45%, cu:31.23%, bi:9.87%; the main components of the noble bismuth volatile are as follows: bi:90.48%, pb:5.87%.
Step six, putting the high-silver low-impurity lead bismuth alloy produced in the step five into a conventional continuous vacuum furnace, carrying out secondary vacuum distillation, further enriching copper and silver into copper-silver-containing materials, volatilizing and condensing bismuth to obtain crude bismuth, further purifying the high-silver lead bismuth alloy, returning to the vacuum furnace, carrying out vacuum distillation for 2-3 times, condensing and collecting to obtain crude bismuth with the bismuth content of more than 90%, further enriching silver into copper-silver materials, and better separating copper, silver and lead bismuth to achieve the expected effect.
Step seven, the smelting slag, the earlier-stage smelting slag and the high-copper converting slag generated by the copper anode slime treatment system in the step two and the step three are integrated into a lead anode slime treatment system for centralized treatment, and valuable metals such as lead, bismuth and antimony are comprehensively separated and recovered; and (3) the copper and silver-containing materials in the treatment process of the pentalead anode slime are merged into a copper anode slime treatment system, so that copper and silver are further enriched and recovered.
The invention obtains the following technical effects through the process:
1. the rotary top blowing furnace process realizes the one-step separation of lead anode slime, antimony and bismuth.
Adopting a rotary top-blowing furnace to treat lead anode slime, wherein part of antimony in the lead anode slime enters smelting slag to form antimony-rich slag, and the other part enters dust collection equipment along with flue gas to obtain antimony-rich dust, and the antimony-rich slag and the part enter an antimony product working procedure to treat the antimony-rich slag to obtain an antimony product with high purity; the bismuth forms high copper noble bismuth alloy, crude bismuth is obtained after distillation, refined bismuth is produced by a bismuth refining process, one-step separation of antimony and bismuth is realized, the noble lead contains less than 5% of antimony, the smoke dust contains less than or equal to 0.3% of silver, the antimony-rich slag contains more than 55% of antimony, and the silver content is less than or equal to 1500g/t.
2. And a high-temperature continuous vacuum distillation furnace process is adopted to realize the separation of copper, silver, tellurium and lead and bismuth.
Tellurium in the lead anode slime mainly enters high-copper noble bismuth, tellurium is sent to be recovered in a tellurium-rich alloy mode after high-temperature continuous vacuum distillation, and copper and silver-containing materials are sent to a copper anode slime treatment system to be recovered. The whole treatment process is simple, the separation effect is good, valuable metals are easy to recycle, the backlog is small, and the recovery rate and the direct yield of noble metals are high.
3. And the cooperative treatment process realizes the short-flow multi-metal comprehensive recovery.
The lead-rich bismuth antimony slag produced by the copper anode slime system is sent to a lead anode slime smelting process, and lead, bismuth and antimony are respectively treated in a centralized way and recovered; and the copper-silver-containing material produced by the lead anode slime system is sent to the copper anode slime converting process for cooperative treatment, so that the complete open circuit of copper is realized. Lead, bismuth, antimony, tellurium, copper, gold and silver can be effectively recovered, so that the backlog of noble metal materials in a production system is reduced by more than 45%, the direct recovery rate and recovery rate of metals are improved, and the total-process smelting cost is reduced by 35%.
4. The vacuum distillation furnace has strong raw material adaptability, and realizes continuous vacuum distillation of high copper noble bismuth.
The continuous vacuum distillation furnace can process low-copper materials and high-copper materials, and has strong adaptability to the materials. Breaks through the technical bottleneck of separating noble and rare metals by continuous vacuum distillation under the condition of high copper (Cu is less than or equal to 5 percent), and effectively separates copper, bismuth and tellurium.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The comprehensive recovery process for the copper-lead anode slime through cooperative treatment is characterized by comprising the following steps of:
step one, copper anode slime is pre-decoppered by means of pressurized acid leaching, selenium and tellurium are recovered from the decoppered liquid, the decoppered slime is dried by microwaves and then is sent into a rotary top blowing furnace, scrap iron, quartz stone and coke are added for reduction smelting, after the materials are fully melted and reacted, the melt is divided into two layers, and the upper layer is smelting slag, wherein the main part is thatThe component is Pb, the lower layer is selenium-rich noble lead material, and most of selenium is SeO 2 Volatilizing the form into smelting flue gas;
step two, the upper layer smelting slag produced in the step one is scraped completely, and the selenium-rich noble lead alloy is continuously left in a rotary top-blown furnace and is oxidized and blown by introducing compressed air; pb, cu, sb and Bi impurities are oxidized into oxides which are insoluble in Au and Ag in the blowing process, the oxides float on the surface of the melt relatively lightly to form preliminary blowing slag and are removed, and the content of Ag is kept below 0.7%; in addition, se which is not volatilized in the smelting process is continuously oxidized into volatile selenate in the oxidation converting process and enters converting smoke, and Au and Ag are further enriched in a gold-silver alloy phase in the oxidation converting process, so that recovery of Ag in the converting process is realized;
step three, cleaning the front-stage converting slag floating on the surface of the melt in the step two, decoppering the high-copper converting slag generated in the later stage of converting to obtain lead-rich bismuth-antimony slag, casting gold-silver alloy on an anode plate to form a silver anode plate, and conveying the silver anode plate to a silver anode plate electrolysis workshop to recover gold and silver;
adding lead anode slime into a rotary top-blowing furnace for reduction smelting, slagging off after the reduction smelting blowing to obtain an antimony-rich noble lead alloy melt, and keeping the lead alloy melt in the rotary top-blowing furnace for blowing to oxidize Sb to form Sb 2 O 3 Entering smoke dust, and blowing antimony to leave high copper and noble bismuth alloy;
melting the high-copper noble bismuth alloy produced in the step four at 650 ℃ and directly putting the high-copper noble bismuth alloy into a novel vacuum furnace, and carrying out primary vacuum distillation to ensure that copper and silver which are difficult to volatilize are mainly enriched in residues produced by the vacuum furnace to form copper-silver-containing materials, tellurium is enriched in condensate to form tellurium-rich alloy, lead and bismuth are mainly enriched in the volatile matters, and part of silver is volatilized into silver steam, doped primary lead and bismuth volatile matters under the high-temperature vacuum condition to form high-silver low-impurity lead bismuth alloy;
step six, putting the high-silver low-impurity lead bismuth alloy produced in the step five into a conventional continuous vacuum furnace, carrying out secondary vacuum distillation, further enriching copper and silver into copper-silver-containing materials, volatilizing and condensing bismuth to obtain crude bismuth, further purifying the high-silver lead bismuth alloy, returning to the vacuum furnace for vacuum distillation, condensing and collecting to obtain crude bismuth, and further enriching silver into the copper-silver materials;
step seven, the smelting slag, the earlier-stage blowing slag and the lead-rich bismuth-antimony alloy obtained after decoppering of the high-copper blowing slag generated by the copper anode slime treatment systems in the step two and the step three are integrated into a lead anode slime top-blown furnace smelting system in the step two for centralized treatment, and lead, bismuth and antimony and other valuable metals in the lead-bismuth-antimony alloy are comprehensively separated and recovered; and (3) the copper-silver-containing material produced in the treatment process of the lead anode slime in the step (V) is combined into the blowing system of the copper anode slime top-blowing furnace in the step (IV), so that the enrichment and the maximum recovery of copper and silver received by the copper-lead anode slime treatment system are realized.
2. The comprehensive recovery process for copper-lead anode slime synergistic treatment of multiple metals according to claim 1, wherein in the second step, selenium-rich noble lead alloy is continuously left in a rotary top blowing furnace, compressed air is introduced to carry out oxidation blowing, the furnace temperature in the blowing process is controlled between 650 and 850 ℃, and the furnace temperature in the melting stage is maintained above 1000 ℃.
3. The comprehensive recovery process for copper-lead anode slime co-treatment multi-metal according to claim 1, wherein in the fourth step, the lead alloy melt is kept in a rotary top blowing furnace to keep the melt temperature at 900-950 ℃ for blowing.
4. The comprehensive recovery process for copper-lead anode slime synergistic treatment of multiple metals, which is characterized in that the high copper noble bismuth alloy in the fifth step is melted at 650 ℃ and directly put into a novel vacuum furnace, the evaporation temperature is 950-1000 ℃, and the vacuum degree is 20-50 Pa.
5. The comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals according to any one of claims 1 to 4, wherein the high silver-lead-bismuth alloy in step six is further purified and returned to the vacuum furnace for 2 to 3 times of vacuum distillation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311415462.5A CN117448578A (en) | 2023-10-30 | 2023-10-30 | Comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311415462.5A CN117448578A (en) | 2023-10-30 | 2023-10-30 | Comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117448578A true CN117448578A (en) | 2024-01-26 |
Family
ID=89581238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311415462.5A Pending CN117448578A (en) | 2023-10-30 | 2023-10-30 | Comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117448578A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118406883A (en) * | 2024-07-01 | 2024-07-30 | 赤峰山金银铅有限公司 | Lead anode slime treatment process |
-
2023
- 2023-10-30 CN CN202311415462.5A patent/CN117448578A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118406883A (en) * | 2024-07-01 | 2024-07-30 | 赤峰山金银铅有限公司 | Lead anode slime treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102643996B (en) | Method for producing lead bullion by means of copper dross side-blown smelting | |
| CN108913898B (en) | Treatment process of high-bismuth-lead anode slime | |
| CN105483384A (en) | Method for recovering valuable metals from copper anode mud flotation tailings | |
| CN112063854B (en) | Method for comprehensively recovering bismuth, silver and copper metals by taking precious lead as raw material | |
| CN109097587B (en) | Method for efficiently recovering precious metal in lead anode slime | |
| WO2024005307A1 (en) | Method for preparing copper sulfate electrolytic solution | |
| CN110512077A (en) | A kind of method of lead anode slurry high efficiente callback gold and silver bismuth antimony tellurium | |
| CN101225474A (en) | Precious metals smelting method for anode sludge or nonferrous smelting slag | |
| CN1270235A (en) | Process for treating low-grade anode mud | |
| CN113981231A (en) | Process for recovering lead, bismuth, gold and silver from copper anode slime smelting slag | |
| CN117448578A (en) | Comprehensive recovery process for copper-lead anode slime co-treatment of multiple metals | |
| CN115058599B (en) | Method for recycling tin and antimony from tin-lead-containing anode slime through oxidation refining and arsenic removal | |
| CN112609084A (en) | Comprehensive treatment method for smoke dust with high zinc, lead and tin contents in fuming furnace | |
| CN101113491A (en) | Method for leaching indium from indium sulfide concentrate by two-mine method | |
| CN109022812B (en) | Method for recovering refined bismuth and refined copper from high-copper bismuth slag | |
| CN113817924B (en) | Method for producing blister copper by smelting copper dross and smelting device thereof | |
| CN106834711A (en) | A kind of method for reclaiming and preparing high purity tellurium in the flue dust from tellurium containing arsenic | |
| CN114369724A (en) | Method for quickly producing antimony white from high-arsenic antimony-lead anode mud | |
| CN111020206A (en) | Method for comprehensively recovering lead-antimony-bismuth-containing materials such as Kaldo furnace smelting slag | |
| WO2024255007A1 (en) | Method for extracting silver from complex lead bullion | |
| CN109022809B (en) | Process for reducing and smelting copper dross by using sodium organic acid-scrap iron method | |
| JPH101727A (en) | Treatment of copper electrolyte slime | |
| CN112143908A (en) | Smelting process for treating complex gold ore | |
| CN115821054B (en) | Smelting method of lead concentrate | |
| CN111118306A (en) | Method for removing sodium and sulfur from crude antimony and enriching gold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |