CN108754145B - The technique of valuable metal in a kind of recycling electrolytic manganese anode mud - Google Patents

The technique of valuable metal in a kind of recycling electrolytic manganese anode mud Download PDF

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Publication number
CN108754145B
CN108754145B CN201810538497.0A CN201810538497A CN108754145B CN 108754145 B CN108754145 B CN 108754145B CN 201810538497 A CN201810538497 A CN 201810538497A CN 108754145 B CN108754145 B CN 108754145B
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lead
electrolytic manganese
technique
anode mud
valuable metal
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CN108754145A (en
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贾天将
段锋
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Ningxia Tianyuan manganese Material Research Institute (Co.,Ltd.)
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NINGXIA TIANYUAN MANGANESE Ltd Co
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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
    • 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
    • C22B7/006—Wet processes
    • C22B7/007—Wet processes by acid leaching
    • 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
    • C22B11/04—Obtaining noble metals by wet processes
    • C22B11/042—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
    • C22B13/04—Obtaining lead by wet processes
    • C22B13/045—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
    • C22B30/00—Obtaining antimony, arsenic or bismuth
    • C22B30/02—Obtaining antimony
    • 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
    • C22B47/00—Obtaining manganese
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

The invention belongs to electrolysis process technical fields, are related to a kind of technique for recycling valuable metal in electrolytic manganese anode mud.The technique includes: 1. to mix the earth of positive pole with the concentrated sulfuric acid and be stirred continuously slurries are made；2. hydrogen peroxide is added to be reacted, mixture is obtained；3. filters pressing is separated by solid-liquid separation mixture, lead-rich slag and filtrate are obtained；4. floating agent is added in slurries and carries out multiple flotation, the concentrate of silver, antimony is successively floatingly selected；It enters back into shaking table and carries out gravity treatment, the heavy product of acquisition is the concentrate of lead.Utilize the present invention, valuable metal effectively in recycling electrolytic manganese anode mud, silver-colored, antimony concentrate recycling total content is 40kg/t~45kg/t, lead content in lead concentrate is 55%~65%, recovery efficiency is high, solid waste zero-emission, saves stockpiling space, the wasting of resources is reduced, realizes the comprehensive utilization and cleaning treatment of electrolytic manganese anode mud.

Description

The technique of valuable metal in a kind of recycling electrolytic manganese anode mud
Technical field
The invention belongs to electrolysis process technical fields, are related to a kind of technique for recycling valuable metal in electrolytic manganese anode mud.
Background technique
In electrolytic manganese industry, due to process characteristic, a large amount of earth of positive pole can be generated in process of production.Currently, every life 1 ton of manganese metal is produced, about generates 100 kilograms of the earth of positive pole, with the lasting progress of production, the yield of the earth of positive pole also gradually increases, Cause serious stockpiling phenomenon.The existing technology that electrolysis manganese electrolyte manganese sulfate is produced using the earth of positive pole, though from certain journey Degree on can by earth of positive pole digestibility and utilization, but still can generate about 15% leaded, silver-colored, antimony waste residue.If store up for a long time it is such containing The industrial residue of metal can not only cause serious pollution to environment, also result in the unrestrained in vain of the valuable metals such as lead, silver, antimony Take.
Summary of the invention
The purpose of the present invention is to provide a kind of techniques of valuable metal in recycling electrolytic manganese anode mud, utilize electrolytic manganese sun Pole mud recycles manganese, lead, silver, antimony, realizes the cleaning treatment of electrolytic manganese anode mud.
The technical solution of present invention solution above-mentioned technical problem are as follows:
The technique of valuable metal in a kind of recycling electrolytic manganese anode mud, comprises the technical steps that:
(1) earth of positive pole is mixed with the concentrated sulfuric acid and is stirred continuously the concentration that slurries are made, and make liquid acid in slurries Reach 25g/L~40g/L；Wherein, MnO in the earth of positive pole2Content be 20%~40%, 30~50 turns of the revolving speed of whipping process/ Point, preferably 42 revs/min；
(2) hydrogen peroxide is added to be reacted, obtains mixture, mixture includes manganese sulfate electrolyte and leaded, silver-colored, antimony Waste residue, wherein the concentration of hydrogen peroxide is 25%~35%, preferably 28%~30%, and the reaction time is 6h~30h, preferably 24h；
(3) filters pressing is separated by solid-liquid separation mixture, obtains lead-rich slag and filtrate, wherein and filtrate is sent to electrolytic manganese and is produced, Lead-rich slag is added water after draining and then slurries is made, and utilizes grinding pump by slurry abrasive to 200 mesh；
(4) floating agent is added in slurries and carries out multiple flotation, successively floatingly selects the concentrate of silver, antimony, total content For 40kg/t~45kg/t；It enters back into shaking table and carries out gravity treatment, light product obtained, which is sent to flotation circuit, continues flotation, obtains The heavy product obtained is the concentrate of lead, and content is 55%~65%, then the concentrate of lead is passed through lead-smelting furnace and smelts obtained lead bullion And Mn-rich slag；Wherein, floating agent includes sulfydryl anionic collector and regulator, and regulator is sodium carbonate, starch, polypropylene One or more of amide, the dosage of collecting agent are that 200g~500g is added in slurries per ton, and the dosage of regulator is per ton 1.2kg~1.5kg is added in slurries.
Electrolytic manganese anode mud is utilized using having the beneficial effect that for valuable metal technique in present invention recycling electrolytic manganese anode mud Recycle valuable metal, wherein silver-colored, antimony concentrate recycling total content is 40kg/t~45kg/t, and the lead content in lead concentrate is 55%~65%, recovery efficiency is high, realizes the zero-emission of solid waste, saves stockpiling space, reduces the waste of resource and right The comprehensive utilization and cleaning treatment of electrolytic manganese anode mud are realized in the pollution of environment, create good economic benefit for enterprise.
Specific embodiment
Embodiment 1
The technique of valuable metal in a kind of recycling electrolytic manganese anode mud, comprises the technical steps that:
(1) earth of positive pole is mixed with the concentrated sulfuric acid and is stirred continuously the concentration that slurries are made, and make liquid acid in slurries Reach 32g/L；Wherein, MnO in the earth of positive pole2Content be 40%, the concentration of the concentrated sulfuric acid is 95%~98%, and whipping process turns 42 revs/min of speed；
(2) hydrogen peroxide is added to be reacted, obtains mixture, which includes manganese sulfate electrolyte and leaded, silver-colored, antimony Waste residue, wherein the concentration of hydrogen peroxide be 28%~30%, the reaction time be for 24 hours；
(3) filters pressing is separated by solid-liquid separation mixture, obtains lead-rich slag and filtrate, wherein and filtrate is sent to electrolytic manganese and is produced, Lead-rich slag is added water after draining and then slurries is made, and utilizes grinding pump by slurry abrasive to 200 mesh；
(4) floating agent is added in slurries and carries out multiple flotation, successively floatingly selects the concentrate of silver, antimony, enters back into and shake Bed carries out gravity treatment, and light product obtained, which is sent to flotation circuit, continues flotation, and the heavy product of acquisition is the concentrate of lead, then The concentrate of lead is smelted by lead-smelting furnace, lead bullion and Mn-rich slag is made；Wherein, floating agent include sulfydryl anionic collector and Regulator, regulator are sodium carbonate and starch, and the dosage of collecting agent is that 450g is added in slurries per ton, and the dosage of regulator is every 1.4kg is added in ton slurries.
The concentrate of the silver, antimony that are floatingly selected by embodiment 1, total content 42kg/t, the concentrate of lead, content are 60%.
Embodiment 2
The technique of valuable metal in a kind of recycling electrolytic manganese anode mud, comprises the technical steps that:
(1) earth of positive pole is mixed with the concentrated sulfuric acid and is stirred continuously the concentration that slurries are made, and make liquid acid in slurries Reach 25g/L；Wherein, MnO in the earth of positive pole2Content be 30%, the concentration of the concentrated sulfuric acid is 95%~98%, and whipping process turns 30 revs/min of speed；
(2) hydrogen peroxide is added to be reacted, obtains mixture, which includes manganese sulfate electrolyte and leaded, silver-colored, antimony Waste residue, wherein the concentration of hydrogen peroxide be 25%~30%, reaction time 6h；
(3) filters pressing is separated by solid-liquid separation mixture, obtains lead-rich slag and filtrate, wherein and filtrate is sent to electrolytic manganese and is produced, Lead-rich slag is added water after draining and then slurries is made, and utilizes grinding pump by slurry abrasive to 200 mesh；
(4) floating agent is added in slurries and carries out multiple flotation, successively floatingly selects the concentrate of silver, antimony, enters back into and shake Bed carries out gravity treatment, and light product obtained, which is sent to flotation circuit, continues flotation, and the heavy product of acquisition is the concentrate of lead, then The concentrate of lead is smelted by lead-smelting furnace, lead bullion and Mn-rich slag is made；Wherein, floating agent include sulfydryl anionic collector and Regulator, regulator are sodium carbonate, starch and polyacrylamide, and the dosage of collecting agent is that 200g is added in slurries per ton, are adjusted The dosage of agent is that 1.5kg is added in slurries per ton.
The concentrate of the silver, antimony that are floatingly selected by embodiment 2, total content 40kg/t, the concentrate of lead, content are 55%.
Embodiment 3
The technique of valuable metal in a kind of recycling electrolytic manganese anode mud, comprises the technical steps that:
(1) earth of positive pole is mixed with the concentrated sulfuric acid and is stirred continuously the concentration that slurries are made, and make liquid acid in slurries Reach 40g/L；Wherein, MnO in the earth of positive pole2Content be 20%, the concentration of the concentrated sulfuric acid is 95%~98%, and whipping process turns 50 revs/min of speed；
(2) hydrogen peroxide is added to be reacted, obtains mixture, which includes manganese sulfate electrolyte and leaded, silver-colored, antimony Waste residue, wherein the concentration of hydrogen peroxide be 28%~35%, reaction time 30h；
(3) filters pressing is separated by solid-liquid separation mixture, obtains lead-rich slag and filtrate, wherein and filtrate is sent to electrolytic manganese and is produced, Lead-rich slag is added water after draining and then slurries is made, and utilizes grinding pump by slurry abrasive to 200 mesh；
(4) floating agent is added in slurries and carries out multiple flotation, successively floatingly selects the concentrate of silver, antimony, enters back into and shake Bed carries out gravity treatment, and light product obtained, which is sent to flotation circuit, continues flotation, and the heavy product of acquisition is the concentrate of lead, then The concentrate of lead is smelted by lead-smelting furnace, lead bullion and Mn-rich slag is made；Wherein, floating agent include sulfydryl anionic collector and Regulator, regulator are polyacrylamide, and the dosage of collecting agent is that 500g is added in slurries per ton, and the dosage of regulator is per ton 1.2kg is added in slurries.
The concentrate of the silver, antimony that are floatingly selected by embodiment 3, total content 45kg/t, the concentrate of lead, content are 65%.

Claims (8)

1. the technique of valuable metal in a kind of recycling electrolytic manganese anode mud, which is characterized in that comprise the technical steps that:
(1) earth of positive pole is mixed with the concentrated sulfuric acid and is stirred continuously and slurries are made, and reach the concentration of liquid acid in slurries 25g/L~40g/L；
(2) hydrogen peroxide is added to be reacted, obtains mixture, the mixture includes manganese sulfate electrolyte and leaded, silver-colored, antimony Waste residue, the time of reaction are 6h~30h；
(3) filters pressing is separated by solid-liquid separation mixture, obtains lead-rich slag and filtrate, then water is added after lead-rich slag is drained and is made Slurries, then by slurry abrasive to 200 mesh；
(4) floating agent is added in slurries and carries out multiple flotation, successively floatingly selects the concentrate of silver, antimony, total content is 40kg/t~45kg/t；It enters back into shaking table and carries out gravity treatment, light product obtained, which is sent to flotation circuit, continues flotation, obtains Heavy product be lead concentrate, content be 55%~65%, then by the concentrate of lead by lead-smelting furnace smelt be made lead bullion with Mn-rich slag；Wherein, the floating agent includes sulfydryl anionic collector.
2. the technique of valuable metal in a kind of recycling electrolytic manganese anode mud as described in claim 1, which is characterized in that the step Suddenly in (1), MnO in the earth of positive pole2Content be 20%~40%.
3. the technique of valuable metal in a kind of recycling electrolytic manganese anode mud as described in claim 1, which is characterized in that the step Suddenly in (1), 30~50 revs/min of the revolving speed of whipping process.
4. the technique of valuable metal in a kind of recycling electrolytic manganese anode mud as described in claim 1, which is characterized in that the step Suddenly in (2), the concentration of hydrogen peroxide is 25%~35%.
5. the technique of valuable metal in a kind of recycling electrolytic manganese anode mud as described in claim 1, which is characterized in that the step Suddenly in (4), floating agent further includes regulator.
6. the technique of valuable metal in a kind of recycling electrolytic manganese anode mud as claimed in claim 5, which is characterized in that the tune Whole dose is one or more of sodium carbonate, starch, polyacrylamide.
7. the technique of valuable metal in a kind of recycling electrolytic manganese anode mud as described in claim 1, which is characterized in that the mercapto The dosage of base anionic collector is that 200g~500g is added in slurries per ton.
8. such as a kind of technique for recycling valuable metal in electrolytic manganese anode mud described in claim 5 or 6, which is characterized in that institute The dosage for stating regulator is that 1.2kg~1.5kg is added in slurries per ton.
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Publication number Priority date Publication date Assignee Title
CN114655987A (en) * 2021-12-31 2022-06-24 宁夏天元锰材料研究院(有限公司) Method for producing mangano-manganic oxide and co-producing lead-silver alloy
CN115074541A (en) * 2022-05-26 2022-09-20 内蒙古金陶股份有限公司 Method for recovering valuable elements in electrolytic manganese leaching residues

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101538650A (en) * 2009-04-24 2009-09-23 株洲市湘麒科技开发有限公司 Method for wet-separation of manganese from lead and silver in electrolytic-zinc anode slime
CN101690910A (en) * 2009-10-16 2010-04-07 株洲市湘麒科技开发有限公司 Method for separating lead and silver from manganese in anode sludge
CN101717860A (en) * 2009-12-29 2010-06-02 重庆大学 Method for preparing battery raw material by using electrolytic manganese anode mud and product thereof
CN105039703A (en) * 2015-07-08 2015-11-11 中信大锰矿业有限责任公司大新锰矿分公司 Method for recycling manganese and lead in electrolytic manganese anode mud
CN106048236A (en) * 2016-08-16 2016-10-26 贵州铜仁金瑞锰业有限责任公司 Comprehensive recovery treatment process for electrolytic manganese anode slime
CN106834754A (en) * 2016-12-29 2017-06-13 宁夏天元锰业有限公司 A kind of method that manganese is reclaimed in electrolytic manganese anode slag

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1116412A (en) * 1979-05-10 1982-01-19 Kohur N. Subramanian Recovery of nickel and cobalt from leach slurries

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101538650A (en) * 2009-04-24 2009-09-23 株洲市湘麒科技开发有限公司 Method for wet-separation of manganese from lead and silver in electrolytic-zinc anode slime
CN101690910A (en) * 2009-10-16 2010-04-07 株洲市湘麒科技开发有限公司 Method for separating lead and silver from manganese in anode sludge
CN101717860A (en) * 2009-12-29 2010-06-02 重庆大学 Method for preparing battery raw material by using electrolytic manganese anode mud and product thereof
CN105039703A (en) * 2015-07-08 2015-11-11 中信大锰矿业有限责任公司大新锰矿分公司 Method for recycling manganese and lead in electrolytic manganese anode mud
CN106048236A (en) * 2016-08-16 2016-10-26 贵州铜仁金瑞锰业有限责任公司 Comprehensive recovery treatment process for electrolytic manganese anode slime
CN106834754A (en) * 2016-12-29 2017-06-13 宁夏天元锰业有限公司 A kind of method that manganese is reclaimed in electrolytic manganese anode slag

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