CN107523694B - A kind of method of Bellamya aeruginosa roasting enhanced leaching - Google Patents
A kind of method of Bellamya aeruginosa roasting enhanced leaching Download PDFInfo
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- CN107523694B CN107523694B CN201710810733.5A CN201710810733A CN107523694B CN 107523694 B CN107523694 B CN 107523694B CN 201710810733 A CN201710810733 A CN 201710810733A CN 107523694 B CN107523694 B CN 107523694B
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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
- C22B7/02—Working-up flue dust
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
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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
- C22B13/04—Obtaining lead by wet processes
- C22B13/045—Recovery from waste materials
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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
- C22B15/00—Obtaining copper
- C22B15/0002—Preliminary treatment
- C22B15/001—Preliminary treatment with modification of the copper constituent
- C22B15/0013—Preliminary treatment with modification of the copper constituent by roasting
- C22B15/0015—Oxidizing roasting
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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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
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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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
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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
- C22B30/06—Obtaining bismuth
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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
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P10/20—Recycling
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Abstract
The present invention provides a kind of methods of Bellamya aeruginosa roasting enhanced leaching.The present invention is by containing the Copper making cigarette ash compared with Polymetallic sulphide, by sulfuric acid, once copper and zinc in Copper making cigarette ash are effectively leached in leaching-oxidizing roasting-sulfuric acid secondary leaching process flow, and the synthesis leaching rate of metallic copper and zinc is 90% or more.Using the copper and zinc in process flow provided by the invention recycling Copper making cigarette ash, process flow is reasonable, and metal leaching rate is high, and reagent consumption is few, easy to operate, technical indicator is stable, production cost is low, has significant economic benefit and environmental benefit.
Description
Technical field
The present invention relates to non-ferrous metallurgy fields, especially the wet process smelting of the roasting of Copper making cigarette ash enhanced leaching copper and zinc
Golden method.
Background technique
Currently, most of metallic copper all originates from pyrometallurgical smelting process in the world, and a large amount of cigarettes can be generated in smelting process
Ash.Because not only comprising metals such as copper, lead, zinc, bismuth, indiums in cigarette ash, but also containing toxic elements such as arsenic and cadmiums, so it is considered as
A kind of important secondary resource.In recent years, it is generated with the exhaustion of the increase of copper yield and high-grade copper mine, metallurgy of copper industry
Cigarette ash quantity is continuously increased.In addition, environmental regulation also becomes more harsh.Therefore, cigarette ash processing has become metallurgy of copper industry
One big critical issue.
If cigarette ash directly returns to smelting process without processing, some impurity elements can recycle product in copper metallurgy industry
It is tired, substantially reduce the operational capacity of smelting furnace and the quality of cathode copper.In addition, the accumulation of impurity also will affect catalyst in relieving haperacidity
Service life.Therefore, it is necessary to carry out individually processing to cigarette ash to recycle metal.The treatment process of cigarette ash mainly includes pyrogenic process at present
Technique, wet processing and the wet method combined technique of pyrogenic process-.
Thermal process refers to cigarette ash direct melting in reverberatory furnace, electric arc furnaces, side-blown converter or blast furnace, makes lead, bismuth and expensive
Metal etc. enters lead bullion, copper segregation output high-arsenic dust after matte phase, arsenic volatilization.Thermal process reduces cigarette ash and refines main body
The influence of process for copper, but there are valuable metal dispersion, the problems such as energy consumption is high and environmental pollution.The wet method combined technique of pyrogenic process-is then
It is to be combined pyrogenic process and wet processing to improve the separating effect of valuable metal in Bellamya aeruginosa, is used according to pyrogenic process and wet process
Sequencing is different, there is pyrogenic process-wet processing and wet process-thermal process.Pyrogenic process-wet processing is then first using reduction roasting
Or the methods of sulfating roasting makes arsenic be volatized into flue dust, while the metals such as copper and zinc being made to be converted into soluble conformation, then roasts
Sand leaches the separation valuable metals such as copper and zinc again, and leached mud is enriched the valuable metals such as lead and bismuth.And wet process-thermal process is then
So that the dissolutions such as copper, arsenic and zinc is entered solution using sulfuric acid system leaching first, leachate after arsenic removal again separation and Extraction copper and
Zinc, leached mud reduction melting in blast furnace are enriched in lead and bismuth etc. in lead bullion.The wet method combined technical process index of pyrogenic process-is steady
It is fixed, be it is current it is domestic use technique the most universal, but pyrogenic attack stage high production cost and easily cause secondary pollution.It is wet
Method technique is then that Bellamya aeruginosa leaches in neutral system, acid system or alkaline system.Neutral system leaching is Bellamya aeruginosa in water
Normal pressure leaching and high temperature and pressure leach in solution, and the dissolution of the sulfate of copper and zinc is made to enter solution, and lead and bismuth then enter precipitating
Slag.Acid system leaching is leached in sulfuric acid system, is dissolved in copper, arsenic and zinc in solution, and lead and bismuth precipitating enter
Leached mud, finally separating valuable metals from leachate again.Alkaline system leaching is then in sodium hydroxide or vulcanized sodium system
Realize the leaching of arsenic in cigarette ash, leached mud uses acidic leaching or direct melting method to recycle valuable metal again.No matter Bellamya aeruginosa
Which kind of leached in system, wet processing all overcomes environmental impact issues existing for thermal process, but there are metal separation
Effect is poor, high production cost and the disadvantages of narrow scope of application.
Because of the difference of raw materials for metallurgy ingredient and smelting system, the cigarette ash ingredient of each copper smelting plant output also has very big
Difference.Although there are many method about cigarette ash processing, most of converter cigarettes for being all absorbed in research Copper making now
The processing of ash, it is in addition many to study the recovery process for laying particular emphasis on certain several metal lump body.However, for Ovshinsky during Copper making
The research for the cigarette ash processing method that Mai Telu or bottom convertor generate is seldom.Such cigarette ash metal object phase composition is complicated, containing higher
The metallic copper of ratio or the sulfide of zinc, so being difficult to effectively leach the copper and zinc in cigarette ash using existing method.
Summary of the invention
In order to overcome existing method processing Ovshinsky wheat spy furnace or bottom convertor generate cigarette ash during copper and zinc leaching rate it is low
Deficiency, the present invention provides a kind of method of Bellamya aeruginosa roasting enhanced leaching, it has copper and zinc leaching rate high, environmental pollution
It is small, the at low cost and simple feature of operating method.
In order to achieve the above objectives the technical solution adopted by the present invention is that: into Copper making cigarette ash be added sulfuric acid solution once soak
Out, the metal sulfate and oxide dissolution for making the metals such as copper, the zinc in Bellamya aeruginosa enter a leachate, and metal sulfide is heavy
It forms sediment and enters a leached mud；It is roasted at a certain temperature after leached mud drying, makes metallic sulfide oxidation, certain matter is added
The calcium oxide of amount can react with sulfur dioxide, realize solid sulphur to reduce the purpose of smoke gas treatment cost, calcining is in sulphur
Secondary leaching in acid solution makes copper and zinc in calcining enter secondary leachate, and secondary leachate returns primary after solid-liquor separation
It leaches.The essence of the technical program is using the copper and zinc in baking modes enhanced leaching Copper making cigarette ash, and primary leaching is same
When be stripped of sulfate and oxide, effectively prevent the appearance of roasting process sintering phenomenon, these three process tight associations are single
Only process cannot all reach the desired effect for effectively leaching copper and zinc in Copper making cigarette ash.
Specific technical process and parameter are as follows:
1 sulfuric acid once leaches
Copper making cigarette ash leaches in sulfuric acid solution, dissolves the metal oxides such as copper, zinc and sulfate and enters solution.Sulphur
Acid solution and Copper making cigarette ash are sized mixing by liquid-solid ratio (the ratio between liquid volume L and solid weight kg) 3: 1, control the pH of mixed slurry
Value is kept for 80 DEG C of mixed slurry temperature between 1.0~3.0, uses sheet frame pressure after 90min is reacted under suitable mixing speed
Filter mode realizes that solid-liquor separation, leached mud send subsequent calcining process, and the metals such as copper and zinc can be recycled in leachate；Sulfuric acid once leaches
The main chemical reactions that process occurs are as follows:
CuO+H2SO4=CuSO4+H2O (1)
ZnO+H2SO4=ZnSO4+H2O (2)
PbO+H2SO4=PbSO4↓+H2O (3)
2 oxidizing roastings
Leached mud drying of sulfuric acid, sunning make its moisture drop to 3%~8% with other dried material mixed processings
After carry out oxidizing roasting, specific implementation process: by leached mud of sulfuric acid after drying, (sulfuric acid is primary in mass ratio with calcium oxide
The ratio between leached mud quality kg and calcium oxide quality kg) it after mixing send into the roasting apparatus such as rotary kiln in temperature at 10: 1~25: 1
Degree is 60~120min of oxidizing roasting at 400 DEG C~600 DEG C；The mixing of air or air and oxygen is passed through when oxidizing roasting
Gas, wherein the volume fraction of oxygen accounts for the 21%~50% of be passed through gas volume；A small amount of flue gas caused by roasting send purification
Processing；The metals such as lead, copper and zinc are present in calcining in one section of leached mud.The main chemical reactions that oxidizing roasting process occurs are such as
Under:
CuS+2O2=CuSO4(4)
ZnS+2O2=ZnSO4(5)
2CaO+2SO2+O2=2CaSO4(6)
The secondary leaching of 3 sulfuric acid
The calcining that oxidizing roasting step obtains carries out secondary leaching, liquid-solid ratio (sulfuric acid solution volume L and oxygen with sulfuric acid solution
Change the ratio between calcining weight kg) 3: 1, for the pH value of mixed slurry between 0.5~2.0, reaction temperature is 80 DEG C, is suitably being stirred
It uses plate compression mode to realize solid-liquor separation after reacting 90min under speed, the secondary leachate containing copper, zinc is obtained after filtering
With leaded, bismuth secondary leached mud；
The secondary leached mud can send to recycling lead and bismuth；The secondary leachate can return to sulfuric acid and once leach.
The sulfuric acid once leaches and the sulfuric acid solution of the secondary leaching of sulfuric acid is the mixture of the technical grade concentrated sulfuric acid and water,
Sulfuric acid concentration is 0.005~0.5mol/L；The present invention is suitable for handling the copper of copper concentrate matte smelting fume treatment process output
Smelting ash, the main component of Copper making cigarette ash is by percentage to the quality are as follows: Cu1.0~20.0, Pb1.0~35.0, Zn1.0~
18.0, As1.0~15.0, Bi0.1~5.0 and S1.0~18.0, unit %.It is also suitable for processing non-ferrous metallurgy process
The solid material of the metal sulfide containing more copper, zinc and lead of output.
The present invention has the advantage that the 1, present invention is primary using sulfuric acid compared with the processing method of traditional copper smelting ash
Leaching-oxidizing roasting-sulfuric acid secondary leaching treatment process can effectively leach the valuable metals such as copper and zinc in Copper making cigarette ash；2,
It is once leached first with sulfuric acid, can first leach a part of metal in cigarette ash, reduce the treating capacity of subsequent process, save energy
Source, while also realizing the purpose of metal sulfate in removing Copper making cigarette ash, prevent it to be sintered during oxidizing roasting
Phenomenon；3, make metallic sulfide oxidation using oxidizing roasting, to make that leaching process of sulfuric acid is difficult to the copper leached and zinc obtains
To be leached in secondary leaching process；4, the calcium oxide that certain mass is added during oxidizing roasting can not influence gold
The generation of sulfur dioxide flue gas is reduced in the case where belonging to leaching rate, and subsequent treatment process is not adversely affected；5, this hair
Sulfuric acid in bright once leaches and the acidity of the sulfuric acid solution in secondary leaching is little, and no other oxidants and additive disappear
Consumption；6, the present invention has the advantages that technical process is simple, technical indicator is stable, labor intensity is small low with production cost etc..
Detailed description of the invention
Fig. 1: present invention process flow diagram.
Specific embodiment:
Embodiment 1:
The main component of the cigarette ash of certain domestic enterprise's copper concentrate Ausmelt furnace bath smelting process output is with quality percentage
Than being calculated as (%): Pb28.69, Cu3.37, Zn15.54, As2.61, Bi3.72 and S14.72.The quality percentage of technical grade sulfuric acid contains
Amount is not less than 98.0%.
Copper making cigarette ash is mixed with sulfuric acid solution sizes mixing, and control liquid-solid ratio (the ratio between liquid volume L and solid weight kg) is 3
: 1, the pH value for controlling mixed slurry is 2.0, and keeping mixed slurry temperature is 80 DEG C, is reacted under the mixing speed of 300r/min
Solid-liquor separation is realized using plate compression mode after 90min, the obtained slag rate of one section of leaching process is 64.06%, and sulfuric acid is primary
The content of copper and zinc is respectively 3.88% and 8.37% after leached mud drying, and the leaching rate of zinc and copper is respectively 65.50% He
26.25%；After sulfuric acid leached mud drying with calcium oxide (leached mud quality kg of sulfuric acid and calcium oxide quality in mass ratio
The ratio between kg) it is after mixing added in rotary kiln at 20: 1, oxidizing roasting 90min at being 500 DEG C in temperature；Oxidizing roasting step
Obtained calcining carries out secondary leaching with sulfuric acid solution, and liquid-solid ratio (the ratio between sulfuric acid solution volume L and oxidation calcining weight kg) is 3
: 1, the pH value of mixed slurry is 1.0, and reaction temperature is 80 DEG C, uses plate after 90min is reacted under the mixing speed of 300r/min
Frame filters pressing mode realizes solid-liquor separation, and the main component after two sections of leached mud drying are obtained after filtering is by percentage to the quality
(%): Pb52.63, Cu0.59, Zn1.63, As0.61, Bi5.65 and S6.72；The synthesis leaching rate of zinc and copper is respectively 94.38%
With 90.62%.
Embodiment 2:
The main component of the cigarette ash of certain domestic enterprise's copper concentrate oxygen-enriched bottom-blowing furnace bath smelting process output is with quality percentage
Than being calculated as (%): Pb24.73, Cu15.68, Zn4.13, As10.14, Bi2.63 and S10.71.The quality percentage of technical grade sulfuric acid
Content is not less than 98.0%.
Bottom convertor cigarette ash is mixed with sulfuric acid solution sizes mixing, and control liquid-solid ratio (the ratio between liquid volume L and solid weight kg) is 3
: 1, the pH value for controlling mixed slurry is 2.0, and keeping mixed slurry temperature is 80 DEG C, is reacted under the mixing speed of 300r/min
Solid-liquor separation is realized using plate compression mode after 90min, the obtained slag rate of leaching process of sulfuric acid is 48.64%, once
The content of copper and zinc is respectively 10.52% and 2.85% after leached mud drying, and the leaching rate of copper and zinc is respectively 67.37% He
66.43%；After sulfuric acid leached mud drying with calcium oxide (leached mud quality kg of sulfuric acid and calcium oxide quality in mass ratio
The ratio between kg) it is after mixing added in rotary kiln at 20: 1, oxidizing roasting 90min at being 500 DEG C in temperature；Oxidizing roasting step
Obtained calcining carries out secondary leaching with sulfuric acid solution, and liquid-solid ratio (the ratio between sulfuric acid solution volume L and oxidation calcining weight kg) is 3
: 1, the pH value of mixed slurry is 1.0, and reaction temperature is 80 DEG C, uses plate after 90min is reacted under the mixing speed of 300r/min
Frame filters pressing mode realizes solid-liquor separation, and the main component after secondary leached mud drying is obtained after filtering is by percentage to the quality
(%): Pb47.35, Cu1.72, Zn0.63, As1.21, Bi5.23 and S7.17；The synthesis leaching rate of copper and zinc is respectively 95.20%
With 93.32%.
Comparison example 1:
The main component of the cigarette ash of certain domestic enterprise's copper concentrate Ausmelt furnace bath smelting process output is with quality percentage
Than being calculated as (%): Pb28.69, Cu3.37, Zn15.54, As2.61, Bi3.72 and S14.72.The quality percentage of technical grade sulfuric acid contains
Amount is not less than 98.0%, and the oxidant of addition is industrial grade hydrogen peroxide, and the mass percentage of hydrogen peroxide is not less than 27.5%.
Copper making cigarette ash is mixed with sulfuric acid solution sizes mixing, and control liquid-solid ratio (the ratio between liquid volume L and solid weight kg) is 3
: 1, the pH value for controlling mixed slurry is 2.0, and keeping mixed slurry temperature is 80 DEG C, is reacted under the mixing speed of 300r/min
Solid-liquor separation is realized using plate compression mode after 90min；It is carried out in sulfuric acid solution after above-mentioned leached mud drying secondary
Oxidation Leaching, the additional amount of industrial grade hydrogen peroxide and the ratio (the ratio between liquid volume L and solid weight kg) of leached mud dry weight are 1
: 5, control liquid-solid ratio (the ratio between liquid volume L and solid weight kg) is 3: 1, and the pH value of mixed slurry is 1.0, and reaction temperature is
It 80 DEG C, uses plate compression mode to realize solid-liquor separation after 90min is reacted under the mixing speed of 300r/min, is obtained after filtering
Main component after the drying of secondary leached mud be by percentage to the quality (%): Pb51.07, Cu3.08, Zn6.43, As1.81,
Bi6.45 and S11.88；The synthesis leaching rate of zinc and copper is respectively 75.08% and 44.95%.
Comparison example 2:
The main component of the cigarette ash of certain domestic enterprise's copper concentrate Ausmelt furnace bath smelting process output is with quality percentage
Than being calculated as (%): Pb28.69, Cu3.37, Zn15.54, As2.61, Bi3.72 and S14.72.The quality percentage of technical grade sulfuric acid contains
Amount is not less than 98.0%.
Cigarette ash is added in rotary kiln, oxidizing roasting 90min at being 500 DEG C in temperature；The roasting that oxidizing roasting step obtains
Sand is once leached with sulfuric acid solution, and liquid-solid ratio (the ratio between sulfuric acid solution volume L and oxidation calcining weight kg) is 3: 1, mixing
The pH value of slurry is 1.0, and reaction temperature is 80 DEG C, uses plate compression after 90min is reacted under the mixing speed of 300r/min
Mode realizes solid-liquor separation, and the main component after a leached mud drying is obtained after filtering is (%) by percentage to the quality:
Pb42.28, Cu1.87, Zn6.26, As2.29, Bi5.72 and S8.83；The synthesis leaching rate of zinc and copper is respectively 75.75% He
66.60%。
Claims (1)
1. a kind of method of Bellamya aeruginosa roasting enhanced leaching, it is characterised in that the following steps are included:
(1) sulfuric acid once leaches
Sulfuric acid solution and Copper making cigarette ash leach after sizing mixing by the ratio between liquid volume L and solid weight kg 3: 1, control mixed slurry
PH value between 1.0~3.0, keep 80 DEG C of mixed slurry temperature, react 90min under suitable mixing speed；
(2) oxidizing roasting
Leached mud of sulfuric acid presses the ratio between leached mud quality kg of sulfuric acid and calcium oxide quality kg 10 with calcium oxide after drying:
After mixing send into rotary kiln carry out oxidizing roasting at 1~25: 1, and maturing temperature is 400 DEG C~600 DEG C, and oxidizing roasting 60~
120min；The gaseous mixture of air or air and oxygen is passed through when oxidizing roasting, wherein the volume fraction of oxygen accounts for be passed through gas
The 21%~50% of body volume；
(3) the secondary leaching of sulfuric acid
The calcining that oxidizing roasting step obtains carries out the secondary leaching of sulfuric acid, sulfuric acid solution volume L and oxidation calcining with sulfuric acid solution
The ratio between weight kg 3: 1, the pH value of mixed slurry is between 0.5~2.0, and reaction temperature is 80 DEG C, under suitable mixing speed
Solid-liquor separation is realized using plate compression mode after reaction 90min, obtained after filtering the secondary leachate of the sulfuric acid containing copper, zinc and
Leaded, bismuth the secondary leached mud of sulfuric acid；The secondary leached mud of the sulfuric acid sends to recycling lead and bismuth；The secondary leaching of the sulfuric acid
Liquid returns to sulfuric acid and once leaches.
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| CN109112314B (en) * | 2018-10-29 | 2020-06-16 | 昆明冶金研究院 | Method for comprehensively recovering zinc, lead and tin from tin-lead-zinc-rich soot by adopting two-stage countercurrent sulfuric acid leaching |
| CN109439917A (en) * | 2018-11-30 | 2019-03-08 | 铜陵有色金属集团股份有限公司 | A kind of enhanced leaching method and its application of Copper making cigarette ash |
| CN113913624A (en) * | 2020-07-10 | 2022-01-11 | 西南科技大学 | Method for resource recovery of copper in reclaimed copper smelting dust |
| CN113373306A (en) * | 2021-04-29 | 2021-09-10 | 江西理工大学 | Method for producing lead alloy from copper soot through low-temperature reduction smelting |
| CN113528844B (en) * | 2021-07-15 | 2022-12-06 | 江西理工大学 | Method for efficiently separating valuable metals from copper regeneration soot |
| CN114015893A (en) * | 2021-11-09 | 2022-02-08 | 江苏科技大学 | Method for recovering copper from refining slag of copper smelting anode furnace |
| CN113930620B (en) * | 2021-12-17 | 2022-03-04 | 矿冶科技集团有限公司 | Method for recovering copper and zinc from brass casting ash and application |
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| CN101440434A (en) * | 2008-12-17 | 2009-05-27 | 昆明金湖冶金有限公司 | Technique for extracting copper from high-calcium high-magnesium cupric sulfide by wet method |
| CN101890505B (en) * | 2010-07-21 | 2012-05-30 | 株洲冶炼集团股份有限公司 | Superfine cupper powder and preparation method thereof |
| CN102534228B (en) * | 2012-03-12 | 2013-10-23 | 中南大学 | Method for comprehensively recovering valuable elements from high-arsenic-containing copper smelting soot |
| CN102634668B (en) * | 2012-05-04 | 2014-07-30 | 昆明理工大学 | Roasting-free evaporation-free method for producing cupric sulfate from zinc hydrometallurgy acid-wash copper dross |
| CN104451123A (en) * | 2014-11-13 | 2015-03-25 | 昆明理工大学 | Method for extracting copper and lead by roasting complex copper-lead-iron mixed sulfide ores by adding calcium-containing material |
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