CN106011497B - A kind of method that lead bullion is reclaimed from lead copper matte - Google Patents
A kind of method that lead bullion is reclaimed from lead copper matte Download PDFInfo
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- CN106011497B CN106011497B CN201610580974.0A CN201610580974A CN106011497B CN 106011497 B CN106011497 B CN 106011497B CN 201610580974 A CN201610580974 A CN 201610580974A CN 106011497 B CN106011497 B CN 106011497B
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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
- C22B13/025—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
- C22B15/0026—Pyrometallurgy
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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
- C22B7/001—Dry processes
- C22B7/004—Dry processes separating two or more metals by melting out (liquation), i.e. heating above the temperature of the lower melting metal component(s); by fractional crystallisation (controlled freezing)
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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 kind of method that lead bullion is reclaimed from lead copper matte, comprise the following steps：(1) mixed after lead copper matte is crushed with soda ash, coke, obtain compound；(2) compound obtained by step (1) is placed in smelting furnace and heated, compound is fused into molten mass, then carry out insulated and stirred, stirring tool used is irony stirring tool during insulated and stirred；(3) after insulated and stirred terminates, then carrying out standing insulation is layered molten mass, and upper strata is concentrated matte, and lower floor is lead bullion, and lead bullion and concentrated matte are then discharged into collection respectively.The method technological process that this reclaims lead bullion from lead copper matte is short, recovery rate of valuable metals is high, and the lead bullion rate of recovery is higher than 90%, and the content of lead is higher than 97% in obtained lead bullion, and the copper in lead copper matte, zinc can be enriched with, obtaining can be directly as copper, the high-grade raw material of zinc abstraction.
Description
Technical field
The invention belongs to non-ferrous metal metallurgy technical field, more particularly to a kind of method that lead bullion is reclaimed from lead copper matte.
Background technology
When pyrometallurgical smelting of lead makes lead copper matte, caused lead copper matte is one kind with cuprous sulfide, vulcanized lead, zinc sulphide, vulcanization
Ferrous iron is the molten mass of main component.According to the difference of refining leady raw materialses, the difference of refining splicer's skill, the composition of the lead copper matte of institute's output
Also differ larger, its typical composition be Pb 10~50%, Cu 10~25%, Fe 10~25%, Zn 5~15%, S 15~
25%, content summation may be up to more than 90%, while carry the metallic compounds such as small amounts lead, silver sulfide secretly.
At present, the processing to lead copper matte has pyrogenic process and the class handling process of wet method two.Wet-treating lead copper matte technique in recent years
Development is more rapid, has roasting-leaching with sulfuric acid, acid system Oxidation Leaching, sulfuric acid system pressure leaching, alkaline high pressure to leach
Deng, but the problems such as technological process is long, equipment investment is high and valuable metal recovery is easily scattered be present.
Existing common pyrogenic processing method has shaft smelting-bessemerize, reduction smelting in reverberatory furnace, top blast stove oxygen-enriched
Blowing etc., the big peace use shaft smelting of such as fourth-bessemerize processing lead copper matte；The Huanghai Sea fly wait use carbonaceous, sodium carbonate for
Raw material reverberatory furnace processing lead copper matte obtains sulfonium slag and cupro lead；Song Xing is really waited and obtained slightly using the method for top blast stove oxygen-enriched air converting
Lead and matte；Zhao Zhiqiang obtains lead bullion and time matte using electric induction furnace dilution processing lead copper matte.These methods all exist valuable
The problems such as metal recovery rate is low.Therefore, seeking the method processing lead copper matte that a kind of technological process is short, recovery rate of valuable metals is high is
Current problem in the urgent need to address.
The content of the invention
The technical problems to be solved by the invention are to overcome the shortcomings of to mention in background above technology and defect, there is provided one
Kind technological process is short, the high method that lead bullion is reclaimed from lead copper matte of recovery rate of valuable metals.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of method that lead bullion is reclaimed from lead copper matte, comprises the following steps：
(1) mixed after, lead copper matte is crushed with soda ash, coke, obtain compound；
(2), compound obtained by step (1) is placed in smelting furnace and heated, compound is fused into molten mass, then carries out
Insulated and stirred, stirring tool used is irony stirring tool during insulated and stirred；
(3) after, insulated and stirred terminates, then carrying out standing insulation is layered molten mass, and upper strata is concentrated matte, and lower floor is thick
Lead, lead bullion and concentrated matte are then discharged into collection respectively.
By the way that lead copper matte is mixed with soda ash and coke, soda ash can effectively reduce the fusing point of lead copper matte, reduce needed for melting
Temperature, reduce energy consumption；Coke can provide reducing atmosphere, prevent elemental metals to be oxidized in high temperature environments.First will before combination
Lead copper matte is crushed, and can effectively shorten the fusing time of lead copper matte, reduces energy resource consumption, reduces production cost.Insulated and stirred
When use irony stirring tool, on the one hand in whipping process, iron on stirring tool participates in chemically reacting as reducing agent
It is as follows to elementary lead, its chemical equation：Fe+PbS=Pb+FeS；On the other hand will not be introduced using irony stirring tool
Foreign metal, and fusing point is higher, cheap.Compound is heated to melting in smelting furnace, it is possible to increase lead copper matte stirs with irony
The contact area of instrument is mixed, improves reaction rate, shortens the reaction time, reduces energy consumption.Insulated and stirred is incubated standing again after terminating
For a period of time, because elementary lead is bigger than the density of concentrated matte, lead is sunken to melting furnace bottom after standing, forms obvious layering,
Being stood using insulation, which makes material be constantly in molten condition, can improve the mobility of material, be advantageous to be layered.The method of the present invention
Technological process is short, recovery rate of valuable metals is high, and the rate of recovery of lead bullion is higher than 90%, and the content of lead is higher than in obtained lead bullion
97%, and the copper in lead copper matte, zinc can be enriched with, copper, the grade of zinc carry compared with raw material lead copper matte in gained concentrated matte
It is high by more than 5%, can be directly as copper, the high-grade raw material of zinc abstraction.This method processing procedure does not produce the pollution such as sulfur dioxide
Property gas, meets environmentally friendly production requirement.
Above-mentioned method, it is preferred that in the step (1), the mass ratio of lead copper matte, soda ash and coke is 100：(4~
10)：(5~15).Each raw material is carried out into mixing in the ratio can obtain more preferable treatment effect.
Above-mentioned method, it is preferred that in the step (1), the particle diameter of lead copper matte is 1~10cm after crushing.Lead copper matte
It is mostly big bulk, pyrogenic attack is directly carried out to the lead copper matte of bulk to be needed to consume mass energy, produces larger financial cost；
Generally need lead copper matte carrying out ball milling before treatment, to obtain tiny lead copper matte particle, however, ball milling operation is also required to consume
Mass energy.Method using the present invention is not high to granularity requirements, without by ball milling operation, only by artificial or simple and mechanical
It is 1~10cm that lead copper matte, which is carried out being crushed to particle diameter, can effectively shorten lead copper matte fusing time, can reduce the energy again and disappear
Consumption, reduce financial cost.
Above-mentioned method, it is preferred that in the step (2), insulated and stirred operation is intermittent stirring.Grasped using intermittent stirring
The mode of work can provide chemical reaction condition, chemical reaction is fully carried out；Meanwhile irony can be stirred using intermittent stirring mode
The reduction of instrument quality is monitored, and prevents iron from excessively dissolving in molten bath, causes the waste of iron, and is avoided that and is caused concentrated matte
The reduction of middle valuable metal grade.
Above-mentioned method, it is preferred that in the step (2), the stirring number of the intermittent stirring is 2~6 times, is stirred every time
The interval time mixed is 0.5h, and the duration stirred every time is 1~10min.It can be made by multiple intermittent stirring in lead copper matte
Lead be sufficiently displaced from separating out, improve the rate of recovery and reaction rate of lead bullion, shorten processing time.
Above-mentioned method, it is preferred that in the step (2), heating-up temperature is 1000 DEG C~1300 DEG C.Using the heating temperature
Lead copper matte can fully be melted to form molten mass by degree, and the mobility of the too low molten mass of temperature can diminish, and being unfavorable for displacement, to carry lead anti-
The progress answered, temperature is too high and can cause unnecessary energy resource consumption, combined reaction speed and energy consumption problem, selects the humidity province
Between it is more suitable.
Above-mentioned method, it is preferred that in the step (3), the temperature for standing insulation operation is 1000 DEG C~1300 DEG C, quiet
It is 0.5~2h to put soaking time.Insulated and stirred terminates the lead element in rear lead copper matte to be reduced sufficiently for elementary lead, due to list
The density ratio concentrated matte of matter lead is big, can be layered elementary lead and concentrated matte by standing, upper strata is concentrated matte, and lower floor is
Lead bullion (contains the noble metals such as gold, silver) in lead；Standing operation maintains temperature to make melting in the range of 1000 DEG C~1300 DEG C
Body keeps preferable mobility, is more beneficial for being layered.
Above-mentioned method, it is preferred that the lead copper matte be pyrometallurgical smelting of lead byproduct, its main chemical elements included
For：Lead, copper, iron, zinc and sulphur.
Above-mentioned method, it is preferred that after the processing of the step (1), step (2) and step (3), the rate of recovery of lead bullion is high
The content of lead is higher than 97% in 90%, the lead bullion.The rate of recovery of this method lead bullion is high, and the content of lead is high in lead bullion, subsequently
Capable recovery can be tapped into vertical by lead electrowinning process.
Compared with prior art, the advantage of the invention is that：
(1) present invention is not high to the Particle size requirements of lead copper matte, it is not necessary to carries out ball-milling treatment, it is only necessary to by artificial or simple
Mechanical Crushing.
(2) present invention can effectively reduce lead copper matte by adding soda ash and coke, soda ash in the lead copper matte after broken
Fusing point, reduce energy consumption；Coke can provide reducing atmosphere, prevent elemental metals to be oxidized in high temperature environments；Also, soda ash and Jiao
Carbon feedstock is easy to get, cheap, need to be only simply mixed when being mixed with lead copper matte, not high to uniformity requirements.
(3) irony stirring tool is used during insulated and stirred, irony stirring tool participates in as reducing agent while stirring
Chemical reaction, the lead bullion in lead copper matte is replaced into elementary lead, reaction efficiency is high, processing time is short, and does not introduce foreign metal.
(4) using this method processing lead copper matte, technological process is short, and the rate of recovery of lead bullion is high, and lead contains in obtained lead bullion
Amount is high, and the copper in lead copper matte, zinc can be enriched with, and obtains directly carrying out the high-grade raw material of copper, zinc abstraction.
(5) toxic and harmful gas such as sulfur dioxide are not produced in the whole processing procedure of this method, comply fully with environmentally friendly production
It is required that.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the process chart of the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
Unless otherwise defined, the implication that all technical terms used hereinafter are generally understood that with those skilled in the art
It is identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to the limitation present invention
Protection domain.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment 1
The raw material lead copper matte that the present embodiment uses is the byproduct of pyrometallurgical smelting of lead, and its primary chemical composition is：Pb
(43.23%), Cu (12.13%), Fe (12.78%), Zn (8.87%) and S (18.35%).
The present invention reclaims a kind of embodiment of the method for lead bullion from lead copper matte, and its technological process is as shown in figure 1, main bag
Include following steps：
(1) it is 3~7cm 5050g lead copper mattes to be broken into particle diameter with disintegrating machine.
(2) by lead copper matte, soda ash and coke quality than 100:6:11, weigh soda ash and coke and enter with the lead copper matte after crushing
Row mixing, obtains compound.
(3) gained compound is placed in smelting furnace, furnace temperature is risen to 1100 DEG C, lead copper matte gradually melts, and turns into melting
Body.
(4) irony stirring tool is used after lead copper matte is completely melt, batch (-type) insulated and stirred is carried out under the conditions of 1100 DEG C.
Stir 4 times altogether, every half an hour stirring once, it is 8 minutes to stir the duration every time, stirs irony after having stirred every time
Instrument takes out from smelting furnace.Lead after agitated reaction in lead copper matte is reduced to elementary lead, and obtains concentrated matte.
(5) after batch (-type) insulated and stirred terminates, molten mass is stood to insulation 0.5h under the conditions of 1100 DEG C.It is incubated through standing
Lead bullion is layered with concentrated matte afterwards, and upper strata is concentrated matte, and lower floor is lead bullion.
(6) stand after insulation terminates and discharged from melting furnace bottom by molten mass, classification receipts are carried out to lead bullion and concentrated matte
Collection.
After above steps is handled, the rate of recovery of lead bullion is 92.31%, and the content of lead is 97.86% in lead bullion, enrichment
Copper, the content of zinc are respectively 18.34%, 14.38% in matte；Copper, the grade of zinc are distinguished compared with raw material lead copper matte in concentrated matte
Improve 6.21%, 5.51%.
Embodiment 2
The raw material lead copper matte that the present embodiment uses is the byproduct of pyrometallurgical smelting of lead, and its primary chemical composition is：Pb
(41.35%), Cu (11.83%), Fe (13.32%), Zn (8.03%) and S (17.18%).
The present invention reclaims a kind of embodiment of the method for lead bullion from lead copper matte, and its technological process is as shown in figure 1, main bag
Include following steps：
(1) it is 4~8cm 4980g lead copper mattes to be crushed into particle diameter with disintegrating machine.
(2) by lead copper matte, soda ash and coke quality than 100:7:9, weigh soda ash and coke and enter with the lead copper matte after crushing
Row mixing, obtains compound.
(3) gained compound is placed in smelting furnace, furnace temperature is risen to 1300 DEG C, lead copper matte gradually melts, and turns into melting
Body.
(4) irony stirring tool is used after lead copper matte is completely melt, batch (-type) insulated and stirred is carried out under the conditions of 1300 DEG C.
Stir 2 times altogether, every half an hour stirring once, it is 10 minutes to stir the duration every time, stirs irony after having stirred every time
Mix instrument to take out from smelting furnace, the lead after agitated reaction in lead copper matte is reduced to elementary lead, and obtains concentrated matte.
(5) after batch (-type) insulated and stirred terminates, molten mass is stood to insulation 1h under the conditions of 1300 DEG C.After standing and being incubated
Lead bullion is layered with concentrated matte, and upper strata is concentrated matte, and lower floor is lead bullion.
(6) stand after insulation terminates and discharged from melting furnace bottom by molten mass, classification receipts are carried out to lead bullion and concentrated matte
Collection.
After above steps is handled, the rate of recovery of lead bullion is 91.92%, and the content of lead is 98.12% in lead bullion, enrichment
Copper, the content of zinc are respectively 17.14%, 13.67% in matte；Copper, the grade of zinc are distinguished compared with raw material lead copper matte in concentrated matte
Improve 5.31%, 5.64%.
Embodiment 3
The raw material lead copper matte that the present embodiment uses is the byproduct of pyrometallurgical smelting of lead, and its primary chemical composition is：Pb
(42.28%), Cu (12.11%), Fe (13.69%), Zn (9.01%) and S (18.24%).
The present invention reclaims a kind of embodiment of the method for lead bullion from lead copper matte, and its technological process is as shown in figure 1, main bag
Include following steps：
(1) it is 1~6cm 4916g lead copper mattes to be crushed into particle diameter with disintegrating machine.
(2) by lead copper matte, soda ash and coke quality than 100:5:12, weigh soda ash and coke and enter with the lead copper matte after crushing
Row mixing, obtains compound.
(3) gained compound is placed in smelting furnace, furnace temperature is risen to 1100 DEG C, lead copper matte gradually melts, and turns into melting
Body.
(4) irony stirring tool is used after lead copper matte is completely melt, batch (-type) insulated and stirred is carried out under the conditions of 1100 DEG C.
Stir 6 times altogether, every half an hour stirring once, it is 1 minute to stir the duration every time, stirs irony after having stirred every time
Instrument takes out from smelting furnace, and the lead after agitated reaction in lead copper matte is reduced to elementary lead, and obtains concentrated matte.
(5) after batch (-type) insulated and stirred terminates, molten mass is stood to insulation 1.5h under the conditions of 1100 DEG C.It is incubated through standing
Lead bullion is layered with concentrated matte afterwards, and upper strata is concentrated matte, and lower floor is lead bullion.
(6) stand after insulation terminates and discharged from melting furnace bottom by molten mass, classification receipts are carried out to lead bullion and concentrated matte
Collection.
After above steps is handled, the rate of recovery of lead bullion is 92.89%, and the content of lead is 98.34% in lead bullion, enrichment
Copper, the content of zinc are respectively 18.2%, 14.81% in matte；Copper, the grade of zinc carry respectively compared with raw material lead copper matte in concentrated matte
It is high by 6.09%, 5.8%.
Embodiment 4
The raw material lead copper matte that the present embodiment uses is the byproduct of pyrometallurgical smelting of lead, and its primary chemical composition is：Pb
(43.02%), Cu (11.25%), Fe (12.92%), Zn (8.12%) and S (18.21%).
The present invention reclaims a kind of embodiment of the method for lead bullion from lead copper matte, and its technological process is as shown in figure 1, main bag
Include following steps：
(1) it is 6~10cm 5123g lead copper mattes to be crushed into particle diameter with disintegrating machine.
(2) it is 100 by lead copper matte, soda ash and coke quality ratio:4:15, weigh soda ash and coke.
(3) gained compound is placed in smelting furnace, furnace temperature is risen to 1000 DEG C, lead copper matte gradually melts, and turns into melting
Body.
(4) irony stirring tool is used after lead copper matte is completely melt, batch (-type) insulated and stirred is carried out under the conditions of 1000 DEG C.
Stir 5 times altogether, every half an hour stirring once, it is 3 minutes to stir the duration every time, stirs irony after having stirred every time
Instrument takes out from smelting furnace, and the lead after agitated reaction in lead copper matte is reduced to elementary lead, and obtains concentrated matte.
(5) after batch (-type) insulated and stirred terminates, molten mass is stood to insulation 2h under the conditions of 1000 DEG C.After standing and being incubated
Lead bullion is layered with concentrated matte, and upper strata is concentrated matte, and lower floor is lead bullion.
(6) stand after insulation terminates and discharged from melting furnace bottom by molten mass, classification receipts are carried out to lead bullion and concentrated matte
Collection.
After above steps is handled, the rate of recovery of lead bullion is 92.34%, and the content of lead is 98.25% in lead bullion, enrichment
Copper, the content of zinc are respectively 16.54%, 14.32% in matte；Copper, the grade of zinc are distinguished compared with raw material lead copper matte in concentrated matte
Improve 5.29%, 6.2%.
Comparative example 1
The raw material lead copper matte that this comparative example uses is the byproduct of pyrometallurgical smelting of lead, and its primary chemical composition is：Pb
(43.02%), Cu (11.25%), Fe (12.92%), Zn (8.12%) and S (18.21%).
Main implementation steps are as follows：
(1) one piece of lead copper matte, quality 5230g are chosen.
(2) by lead copper matte, soda ash, iron filings and coke quality than 100:10:15:5, weigh soda ash, iron filings and coke and mix
Close.
(3) gained compound is placed in smelting furnace, smelted 2~3 hours at a temperature of 800~1000 DEG C, then be warming up to
Smelted again at a temperature of 1200~1250 DEG C 2~3 hours, realize lead bullion and concentrated matte separation.
(4) discharged from melting furnace bottom by molten mass, categorised collection is carried out to lead bullion and concentrated matte.
After above steps is handled, the rate of recovery of lead bullion is 81.21%, and the content of lead is 96.45% in lead bullion, enrichment
Copper, the content of zinc are respectively 13.14%, 11.24% in matte；Copper, the grade of zinc are distinguished compared with raw material lead copper matte in concentrated matte
Improve 1.89%, 3.12%.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (6)
1. a kind of method that lead bullion is reclaimed from lead copper matte, comprises the following steps：
（1）Mixed after lead copper matte is crushed with soda ash, coke, obtain compound；
（2）By step（1）Gained compound, which is placed in smelting furnace, to be heated, and compound is fused into molten mass, is then incubated
Stirring, stirring tool used is irony stirring tool during insulated and stirred；Insulated and stirred operation is intermittent stirring, the intermittent stirring
Stirring number be 2 ~ 6 times, the interval time stirred every time is 0.5h, and the duration stirred every time is 1 ~ 10min；
（3）After insulated and stirred terminates, then carrying out standing insulation is layered molten mass, and upper strata is concentrated matte, and lower floor is lead bullion, so
Lead bullion and concentrated matte are discharged into collection respectively afterwards, the temperature for standing insulation operation is 1000 DEG C ~ 1300 DEG C, stands soaking time
For 0.5 ~ 2h.
2. the method according to claim 1 that lead bullion is reclaimed from lead copper matte, it is characterised in that：The step（1）In, lead
The mass ratio of matte, soda ash and coke is 100：（4~10）：（5~15）.
3. the method according to claim 1 that lead bullion is reclaimed from lead copper matte, it is characterised in that：The step（1）In, warp
The particle diameter of lead copper matte is 1 ~ 10cm after broken.
4. the method according to claim 1 that lead bullion is reclaimed from lead copper matte, it is characterised in that：The step（2）In, add
Hot temperature is 1000 DEG C ~ 1300 DEG C.
5. the method that lead bullion is reclaimed from lead copper matte according to any one of claim 1 ~ 4, it is characterised in that：The lead
Matte is the byproduct of pyrometallurgical smelting of lead, and its main chemical elements is：Lead, copper, iron, zinc and sulphur.
6. the method that lead bullion is reclaimed from lead copper matte according to any one of claim 1 ~ 4, it is characterised in that：Through described
Step（1）, step（2）And step（3）After processing, the rate of recovery of lead bullion is higher than 90%；The content of lead is higher than 97% in the lead bullion.
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| CN109457121B (en) * | 2018-11-20 | 2020-06-30 | 中南大学 | Method for separating copper and lead from lead matte by melting extraction |
| CN109778230B (en) * | 2019-01-22 | 2021-03-12 | 河套学院 | Method for electrolytic separation of lead and copper from high-lead copper matte |
| CN110499428A (en) * | 2019-08-05 | 2019-11-26 | 襄阳金湛技术开发有限公司 | A kind of reviver decoppering agent and preparation method thereof |
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| CN101358286B (en) * | 2008-09-25 | 2010-06-16 | 昆明理工大学 | Method for treating copper scum using converter |
| CN102643996B (en) * | 2012-05-23 | 2013-12-11 | 云南驰宏锌锗股份有限公司 | Method for producing lead bullion by means of copper dross side-blown smelting |
| CN103320614B (en) * | 2013-07-10 | 2015-11-18 | 郴州市金贵银业股份有限公司 | A kind of lead matte pyrogenic attack technique |
| CN104451161A (en) * | 2014-12-04 | 2015-03-25 | 中南大学 | Method for low-temperature smelting of regenerated lead |
| CN104946899B (en) * | 2015-06-03 | 2017-02-22 | 青海西豫有色金属有限公司 | Edge transmission top-blown converter and depleted sedimentation furnace combined lead dross treatment method |
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