CN109957667A - A kind of process for extracting lead bullion from lead copper matte - Google Patents
A kind of process for extracting lead bullion from lead copper matte Download PDFInfo
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- CN109957667A CN109957667A CN201711424125.7A CN201711424125A CN109957667A CN 109957667 A CN109957667 A CN 109957667A CN 201711424125 A CN201711424125 A CN 201711424125A CN 109957667 A CN109957667 A CN 109957667A
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- Prior art keywords
- lead
- matte
- copper matte
- bullion
- stirred
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- 239000010949 copper Substances 0.000 title claims abstract description 122
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 117
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 54
- 230000008569 process Effects 0.000 title claims abstract description 32
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 40
- 239000011701 zinc Substances 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 238000003723 Smelting Methods 0.000 claims abstract description 22
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 21
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 21
- 239000000571 coke Substances 0.000 claims abstract description 20
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 20
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000011084 recovery Methods 0.000 claims abstract description 18
- 238000004321 preservation Methods 0.000 claims abstract description 17
- 239000011133 lead Substances 0.000 claims description 202
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000006227 byproduct Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- 229910052729 chemical element Inorganic materials 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 18
- 229910052751 metal Inorganic materials 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 12
- 150000002739 metals Chemical class 0.000 abstract description 6
- 238000002844 melting Methods 0.000 description 11
- 230000008018 melting Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000005265 energy consumption Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000000498 ball milling Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000002386 leaching Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001698 pyrogenic effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 229910052946 acanthite Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- AQMRBJNRFUQADD-UHFFFAOYSA-N copper(I) sulfide Chemical compound [S-2].[Cu+].[Cu+] AQMRBJNRFUQADD-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005363 electrowinning Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 1
- 229940056910 silver sulfide Drugs 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium Chemical compound [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
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
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A kind of process for extracting lead bullion from lead copper matte, comprising the following steps: (1) mixed after being crushed lead copper matte with soda ash, coke, obtain mixture；(2) mixture obtained by step (1) is placed in smelting furnace and is heated, mixture is made to be fused into molten mass, then carry out insulated and stirred, when insulated and stirred, stirring tool used was irony stirring tool；(3) after insulated and stirred, then carrying out standing heat preservation is layered molten mass, and upper layer is concentrated matte, and lower layer is lead bullion, and collection is then discharged in lead bullion and concentrated matte respectively.The process process flow that lead bullion is extracted 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 copper, the zinc in lead copper matte 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 smelting technology more particularly to a kind of technique sides that lead bullion is extracted from lead copper matte
Method.
Background technique
When pyrometallurgical smelting of lead makes lead copper matte, generated lead copper matte is one kind with cuprous sulfide, vulcanized lead, zinc sulphide, vulcanization
Ferrous molten mass as main component.According to the difference of refining leady raw materials, the difference of refining splicer's skill, the ingredient of the lead copper matte of institute's output
Also differ larger, typical composition be Pb 10~50%, Cu 10~25%, Fe 10~25%, Zn 5~15%, S 15~
25%, content summation may be up to 90% or more, while carry the metallic compounds such as small amounts lead, silver sulfide secretly.
Currently, having two class treatment process of pyrogenic process and wet process to the processing of lead copper matte.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 there is the problems such as process flow is long, equipment investment is high and valuable metal recovery easily disperses.
Existing common pyrogenic processing method has shaft smelting-to bessemerize, reduction smelting in reverberatory furnace, top blast furnace are oxygen-enriched
Blowing etc., such as the big peace of fourth bessemerize processing lead copper matte using shaft smelting-；The Huanghai Sea fly it is equal use carbonaceous, sodium carbonate for
Raw material reverberatory furnace processing lead copper matte obtains sulfonium slag and cupro lead；Song Xing is really equal to be obtained slightly using the method for top blast furnace oxygen-enriched air converting
Lead and matte；Zhao Zhiqiang handles lead copper matte using electric induction furnace dilution, obtains lead bullion and time 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 process flow is short, recovery rate of valuable metals is high is
Current problem in the urgent need to address.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortcomings of to mention in background above technology and defect, provide one
Kind process flow is short, the high process that lead bullion is extracted from lead copper matte of recovery rate of valuable metals.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of process for extracting lead bullion from lead copper matte, comprising the following steps:
(1), it is mixed after being crushed lead copper matte with soda ash, coke, obtains mixture；
(2), mixture obtained by step (1) is placed in smelting furnace and is heated, so that mixture is fused into molten mass, then kept the temperature
Stirring, when insulated and stirred, stirring tool used was irony stirring tool；
(3), after insulated and stirred, then carrying out standing heat preservation is layered molten mass, and upper layer is concentrated matte, and lower layer is lead bullion,
Then collection is discharged in lead bullion and concentrated matte respectively.
By mixing lead copper matte with soda ash and coke, soda ash can effectively reduce the fusing point of lead copper matte, reduce needed for melting
Temperature reduces energy consumption；Coke can provide reducing atmosphere, and elemental metals is prevented to be oxidized under high temperature environment.First will before mixing
Lead copper matte is crushed, and can effectively shorten the fusing time of lead copper matte, is reduced energy consumption, is reduced 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
To elementary lead, chemical equation is as follows: Fe+PbS=Pb+FeS；On the other hand it will not be introduced using irony stirring tool
Foreign metal, and fusing point is higher, cheap.By mixture in smelting furnace heating melting, it is possible to increase lead copper matte is stirred with irony
The contact area of tool is mixed, reaction rate is improved, shortens the reaction time, reduces energy consumption.Standing is kept the temperature after insulated and stirred again
For a period of time, since elementary lead is bigger than the density of concentrated matte, lead is sunken to melting furnace bottom after standing, and forms obvious layering,
Being stood using heat preservation, which makes material be constantly in molten condition, can be improved the mobility of material, is conducive to be layered.Method of the invention
Process flow 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 copper, the zinc in lead copper matte can be enriched with, copper in gained concentrated matte, zinc grade mentioned compared with raw material lead copper matte
It is high by 5% or more, it can be directly as copper, the high-grade raw material of zinc abstraction.This method treatment process does not generate 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 be 100:(4~
10): (5~15).Each raw material, which is carried out mixing, in the ratio can get better treatment effect.
Above-mentioned method, it is preferred that in the step (1), the partial size 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 and needs to consume mass energy, generates larger economic cost；
It usually needs 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.It is not high to granularity requirements using method of the invention, without only passing through artificial or simple and mechanical by ball milling operation
Be crushed to partial size to lead copper matte is 1~10cm, can effectively shorten and lead copper matte fusing time and reduce the energy and disappear
Consumption reduces economic cost.
Above-mentioned method, it is preferred that in the step (2), insulated and stirred operation is intermittent stirring.It is grasped using intermittent stirring
It can provide chemical reaction condition as mode, make to chemically react abundant progress；Meanwhile irony can be stirred using intermittent stirring mode
The reduction of tool 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 in lead copper matte by multiple intermittent stirring
Lead be sufficiently displaced from precipitation, improve the rate of recovery and reaction rate of lead bullion, shorten the processing time.
Above-mentioned method, it is preferred that in the step (2), heating temperature is 1000 DEG C~1300 DEG C.Using the heating temperature
Lead copper matte can sufficiently be melted and forms molten mass by degree, and the mobility of the too low molten mass of temperature can become smaller, and be unfavorable for replacing that mention lead anti-
The progress answered, temperature is excessively high and will cause unnecessary energy consumption, and combined reaction rate and energy consumption problem select the humidity province
Between it is more appropriate.
Above-mentioned method, it is preferred that in the step (3), the temperature for standing heat preservation operation is 1000 DEG C~1300 DEG C, quiet
Setting soaking time is 0.5~2h.Lead element after insulated and stirred in lead copper matte is 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 layer is concentrated matte, and lower layer is
Lead bullion (contains the noble metals such as gold, silver) in lead；Standing operation maintains temperature within the scope of 1000 DEG C~1300 DEG C, can make to melt
Body keeps preferable mobility, is more advantageous to layering.
Above-mentioned method, it is preferred that the lead copper matte be pyrometallurgical smelting of lead byproduct, it includes main chemical elements
Are as follows: 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, subsequent
Capable recycling can be tapped into vertical by lead electrowinning process.
Compared with the prior art, the advantages of the present invention are as follows:
(1) present invention is not high to the Particle size requirements of lead copper matte, does not need to carry out ball-milling treatment, it is only necessary to by artificial or simple and mechanical
It is broken.
(2) present invention can effectively reduce lead copper matte by the way that soda ash and coke, soda ash are added in broken lead copper matte
Fusing point reduces energy consumption；Coke can provide reducing atmosphere, and elemental metals is prevented to be oxidized under high temperature environment；Also, soda ash and coke
Carbon feedstock is easy to get, cheap, need to only be simply mixed when mixing with lead copper matte, not high to uniformity requirements.
(3) irony stirring tool is used when insulated and stirred, irony stirring tool is participated in as reducing agent while agitating
Lead bullion in lead copper matte is replaced into elementary lead by chemical reaction, and reaction efficiency is high, short processing time, and does not introduce foreign metal.
(4) lead copper matte is handled using this method, process flow is short, and the rate of recovery of lead bullion is high, and lead contains in obtained lead bullion
Amount is high, and can be enriched with to copper, the zinc in lead copper matte, obtains the high-grade raw material that can directly carry out copper, zinc abstraction.
(5) toxic and harmful gas such as sulfur dioxide are not generated in the entire treatment process of this method, comply fully with environmentally friendly production
It is required that.
Specific embodiment
To facilitate the understanding of the present invention, below in conjunction with specification preferred embodiment to the present invention make more comprehensively, it is careful
Ground description, but the protection scope of the present invention is not limited to the following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention
Protection scope.
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 are the byproduct of pyrometallurgical smelting of lead, primary chemical composition are as follows:
Pb (43.23%), Cu (12.13%), Fe (12.78%), Zn (8.87%) and S (18.35%).
The present invention extracts a kind of embodiment of the process of lead bullion from lead copper matte, mainly comprises the steps that
(1) 5050g lead copper matte is broken to partial size with crusher is 3~7cm.(2) by lead copper matte, soda ash and coke quality than 100:
6:11 weighs soda ash and coke and is mixed with broken lead copper matte, obtains mixture.(3) gained mixture is placed in melting
In furnace, furnace temperature is risen to 1100 DEG C, lead copper matte gradually melts, and becomes molten mass.(4) it is stirred after lead copper matte is completely melt with irony
Tool is mixed, carries out intermittent insulated and stirred under the conditions of 1100 DEG C.It stirs 4 times altogether, it is primary every half an hour stirring, it stirs every time
Mixing the duration is 8 minutes, takes out irony stirring tool from smelting furnace after having stirred every time.Lead copper matte after agitated reaction
In lead be reduced to elementary lead, and obtain concentrated matte.(5) after intermittent insulated and stirred, by molten mass at 1100 DEG C
Under the conditions of stand heat preservation 0.5h.Lead bullion and concentrated matte are layered after standing heat preservation, and upper layer is concentrated matte, and lower layer is lead bullion.
(6) it is discharged after standing heat preservation 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 92.31%, and the content of lead is 97.86% in lead bullion, enrichment
Copper in matte, zinc content be respectively 18.34%, 14.38%；The grade of copper, zinc is compared with raw material lead copper matte difference in concentrated matte
Improve 6.21%, 5.51%.
Embodiment 2, the raw material lead copper matte that the present embodiment uses are the byproduct of pyrometallurgical smelting of lead, primary chemical composition are as follows:
Pb (41.35%), Cu (11.83%), Fe (13.32%), Zn (8.03%) and S (17.18%).
The present invention extracts a kind of embodiment of the process of lead bullion from lead copper matte, mainly comprises the steps that
(1) 4980g lead copper matte is crushed to partial size with crusher is 4~8cm.
(2) lead copper matte, soda ash and coke quality ratio 100:7:9 are pressed, weigh soda ash and coke and broken lead copper matte into
Row mixing, obtains mixture.
(3) gained mixture is placed in smelting furnace, furnace temperature is risen to 1300 DEG C, lead copper matte gradually melts, and becomes melting
Body.
(4) irony stirring tool is used after lead copper matte is completely melt, carries out intermittent insulated and stirred under the conditions of 1300 DEG C.
It stirs 2 times altogether, primary every half an hour stirring, stirring the duration every time is 10 minutes, stirs irony after having stirred every time
It mixes tool 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 intermittent insulated and stirred, molten mass is stood to heat preservation 1h under the conditions of 1300 DEG C.After standing heat preservation
Lead bullion and concentrated matte are layered, and upper layer is concentrated matte, and lower layer is lead bullion.
(6) it is discharged after standing heat preservation from melting furnace bottom by molten mass, classification receipts is 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 in matte, zinc content be respectively 17.14%, 13.67%；The grade of copper, zinc is compared with raw material lead copper matte difference in concentrated matte
Improve 5.31%, 5.64%.
Embodiment 3, the raw material lead copper matte that the present embodiment uses are the byproduct of pyrometallurgical smelting of lead, primary chemical composition are as follows:
Pb (42.28%), Cu (12.11%), Fe (13.69%), Zn (9.01%) and S (18.24%).
The present invention extracts a kind of embodiment of the process of lead bullion from lead copper matte, mainly comprises the steps that (1)
It is 1~6cm that 4916g lead copper matte, which is crushed to partial size, with crusher.By lead copper matte, soda ash and coke quality ratio 100:5:12, claim
It takes soda ash and coke to be mixed with broken lead copper matte, obtains mixture.(3) gained mixture is placed in smelting furnace, it will
Furnace temperature rises to 1100 DEG C, and lead copper matte gradually melts, and becomes molten mass.
(4) irony stirring tool is used after lead copper matte is completely melt, carries out intermittent insulated and stirred under the conditions of 1100 DEG C.
It stirs 6 times altogether, primary every half an hour stirring, stirring the duration every time is 1 minute, stirs irony after having stirred every time
Tool 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 intermittent insulated and stirred, molten mass is stood to heat preservation 1.5h under the conditions of 1100 DEG C.It is kept the temperature through standing
Lead bullion and concentrated matte are layered afterwards, and upper layer is concentrated matte, and lower layer is lead bullion.
(6) it is discharged after standing heat preservation from melting furnace bottom by molten mass, classification receipts is 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 in matte, zinc content be respectively 18.2%, 14.81%；Copper in concentrated matte, zinc grade mentioned respectively compared with raw material lead copper matte
It is high by 6.09%, 5.8%.
Embodiment 4, the raw material lead copper matte that the present embodiment uses are the byproduct of pyrometallurgical smelting of lead, primary chemical composition are as follows:
Pb (43.02%), Cu (11.25%), Fe (12.92%), Zn (8.12%) and S (18.21%).
The present invention extracts a kind of embodiment of the process of lead bullion from lead copper matte, mainly comprises the steps that
(1) 5123g lead copper matte is crushed to partial size with crusher is 6~10cm.
(2) it is 100:4:15 by lead copper matte, soda ash and coke quality ratio, weighs soda ash and coke.
(3) gained mixture is placed in smelting furnace, furnace temperature is risen to 1000 DEG C, lead copper matte gradually melts, and becomes melting
Body.
(4) irony stirring tool is used after lead copper matte is completely melt, carries out intermittent insulated and stirred under the conditions of 1000 DEG C.
It stirs 5 times altogether, primary every half an hour stirring, stirring the duration every time is 3 minutes, stirs irony after having stirred every time
Tool 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 intermittent insulated and stirred, molten mass is stood to heat preservation 2h under the conditions of 1000 DEG C.After standing heat preservation
Lead bullion and concentrated matte are layered, and upper layer is concentrated matte, and lower layer is lead bullion.
(6) it is discharged after standing heat preservation from melting furnace bottom by molten mass, classification receipts is 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 in matte, zinc content be respectively 16.54%, 14.32%；The grade of copper, zinc is compared with raw material lead copper matte difference in concentrated matte
Improve 5.29%, 6.2%.
Comparative example 1, the raw material lead copper matte that this comparative example uses are the byproduct of pyrometallurgical smelting of lead, primary chemical composition are as follows:
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 is chosen, quality 5230g.
(2) lead copper matte, soda ash, iron filings and coke quality ratio 100:10:15:5 are pressed, soda ash, iron filings and coke is weighed and mixes
It closes.
(3) gained mixture is placed in smelting furnace, is smelted 2~3 hours at a temperature of 800~1000 DEG C, then be warming up to
It is smelted again at a temperature of 1200~1250 DEG C 2~3 hours, realizes lead bullion and concentrated matte separation.
(4) it is 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 in matte, zinc content be respectively 13.14%, 11.24%；The grade of copper, zinc is compared with raw material lead copper matte difference in concentrated matte
Improve 1.89%, 3.12%.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of process for extracting lead bullion from lead copper matte, comprising the following steps: (1), by lead copper matte it is broken after and soda ash,
Coke is mixed, and mixture is obtained；(2), mixture obtained by step (1) is placed in smelting furnace and is heated, be fused into mixture
Molten mass, then carries out insulated and stirred, and when insulated and stirred, stirring tool used was irony stirring tool；(3), insulated and stirred terminates
Afterwards, then carrying out standing heat preservation is layered molten mass, and upper layer is concentrated matte, and lower layer is lead bullion, then by lead bullion and concentrated matte
Discharge is collected respectively.
2. the process according to claim 1 for extracting lead bullion from lead copper matte, it is characterised in that: the step (1)
In, the mass ratio of lead copper matte, soda ash and coke is 100:(4~10): (5~15).
3. the process according to claim 1 for extracting lead bullion from lead copper matte, it is characterised in that: the step (1)
In, the partial size of lead copper matte is 1~10cm after crushing.
4. the process according to claim 1 for extracting lead bullion from lead copper matte, it is characterised in that: the step (2)
In, insulated and stirred operation is intermittent stirring.
5. the process according to claim 4 for extracting lead bullion from lead copper matte, it is characterised in that: the intermittent stirring
Stirring number be 2~6 times, the interval time stirred every time be 0.5h, the duration stirred every time be 1~10min.
6. the process according to claim 1 for extracting lead bullion from lead copper matte, it is characterised in that: the step (2)
In, heating temperature is 1000 DEG C~1300 DEG C.
7. the process according to claim 1 for extracting lead bullion from lead copper matte, it is characterised in that: the step (3)
In, the temperature for standing heat preservation operation is 1000 DEG C~1300 DEG C, and standing soaking time is 0.5~2h.
8. the process according to any one of claims 1 to 7 for extracting lead bullion from lead copper matte, it is characterised in that:
The lead copper matte is the byproduct of pyrometallurgical smelting of lead, main chemical elements are as follows: lead, copper, iron, zinc and sulphur.
9. the process according to any one of claims 1 to 7 for extracting lead bullion from lead copper matte, it is characterised in that:
After the processing of the step (1), step (2) and step (3), the rate of recovery of lead bullion is higher than 90%；The content of lead in the lead bullion
Higher than 97%.
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