CN105950869B - A kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount - Google Patents
A kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount Download PDFInfo
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- CN105950869B CN105950869B CN201610429591.3A CN201610429591A CN105950869B CN 105950869 B CN105950869 B CN 105950869B CN 201610429591 A CN201610429591 A CN 201610429591A CN 105950869 B CN105950869 B CN 105950869B
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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
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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
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals 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
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry 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
- C22B13/02—Obtaining lead by dry processes
- C22B13/025—Recovery from waste materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/18—Electrolytic production, recovery or refining of metals by electrolysis of solutions of lead
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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
Abstract
A kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount, the lead smelting gas, lead concentrate and additive of drying are subjected to dispensing, obtain compound；Compound is subjected to oxidizing semlting through adding liquid lead in the laggard stove to oxygen-enriched bottom-blowing of pelletizing and into stove；The clinker that oxygen-enriched bottom-blowing stove comes out enters oxygen side blown metal melting reduction furnace by chute, then broken coal and flux are added into oxygen side blown metal melting reduction furnace, forms the clinker of oxygen side blown metal melting reduction furnace；Clinker enters in fuming furnace, the lead of zinc and residual during reduction volatilization is slagged tap under high temperature, for entering the silver in a lead and secondary lead, is refined；For entering zinc, lead in fuming furnace flue dust, flue dust is passed through into defluorinate dechlorination, wet-leaching zinc, electrodeposition carries zinc, and lead enters leached mud and smelts recovery lead by lead again.Present invention process is simple, and lead recovery is about 95%, and zinc recovery is about 90%, and silver raising recovery rate is about 95%, and utilization efficiency is about 90%.
Description
Technical field
The invention belongs to nonferrous smelting technical field, and in particular to one kind improves zinc hydrometallurgy lead smelting gas high efficient resourcing profit
With the method for collocation amount.
Background technology
Zinc hydrometallurgy high temperature high acidic oils technique lead, silver are enriched in high temperature high acidic oils slag, referred to as lead smelting gas, lead silver
Slag slag rate is big according to raw material and technique difference, and the substantially content of each composition is about in 20%-40% or so, lead smelting gas：Zn 2.5-
6%th, Fe 8-18%, lead 7-15%, silver-colored 300-700g/t, sulphur 8-11%.
Rotary kiln evaporation technique is that 40%-50% fuel is incorporated in lead smelting gas toward after being filtered dry is (coke powder, coal, smokeless
Coal), it is added in rotary kiln and handles, furnace gas temperature general control is during 1000-1100 DEG C, rotary kiln evaporation in kiln, quilt
The material of processing mixes with reducing agent, also adds a small amount of lime of people to promote the decomposition of zinc sulphide sometimes and adjusts the composition of kiln slag, leaching
Metal oxide (ZnO, PbO, CdO etc.) in slagging tap contacts with coke powder, and the metallic vapour being reduced out enters gas phase, in gas phase
In again be oxidized to oxide, by it is this volatilization flue dust put into Zinc hydrometallurgy process leaching process reclaim Zn, leached mud can
As the raw material of refining lead, this technique can only reclaim zinc, lead in lead smelting gas, and material volatilization treating capacity is big, and fuel cost is higher,
And refractory consumption rate is big, rotary kiln exhaust gas also needs to carry out desulfurization, and processing cost is higher.Produced according to the Rotary Kiln of some factories
Practice, zinc, lead, the rate of recovery of indium in 80%-90%, into flue dust silver 35% or so.
Vulcanizing-flotation PROCESS FOR TREATMENT lead smelting gas, main purpose is the silver in synthetical recovery slag, but its rate of recovery is only 70%
Left and right.About 80% silver exists with sulfide and morphon in zinc hydrometallurgy leached mud, and more than 90% silver be distributed in-
200 mesh can be in flotation size fraction ranges, therefore leached mud can use after direct flotation method or pretreatment the method recovery silver of flotation again.
Zhuzhou Smelter reaches 60%-70% using the silver in the floatation process recovery cadmia of " thick two essence three is swept ", the rate of recovery, and concentrate contains
Silver about 6000g/t, mine tailing argentiferous about 100g/t.Most of metal is all to regenerate compound form presence in lead smelting gas, so floating
Pb, Zn, Ag rate of recovery are all undesirable during choosing, and final result of the test shows that Pb rate of recovery highest only has in its floatation process
58%, the Zn rate of recovery 10%~15%, and flotation tailings remains as hazardous waste.
Oxygen bottom blowing smelter (oxygen-enriched bottom-blowing stove is) is only applicable to the leaded high lead concentrate for being more than 50% (mass fraction)
Processing, and for leaded 40% or so or following low-grade lead concentrate, due to being unable to autogenous smelting and can not be at oxygen bottom
Blown converter directly produces lead bullion, causes the blowing-ouf of lines serious, shortens dramatically body of heater service life, and the leaded grade of slag reduces,
Slag melting point improves, and slag becomes sticky, and slagging is difficult, is also easy to produce foamed slag and emits slag accident, molten bath freezes to cause dead stove accident.
The content of the invention
The shortcomings that to overcome in the method for comprehensive utilization of current lead smelting gas, it is an object of the invention to propose that a kind of raising is wet
The method of method zinc metallurgy lead smelting gas high-efficiency resource recycling collocation amount, using drying-oxygen-enriched bottom-blowing stove oxidizing semlting-oxygen-enriched side-blowing
Valuable element in the efficient synthetical recovery lead smelting gas of method of liquid reduction stove reduction melting-fuming furnace reduction volatilization.To oxygen-enriched
The collocation amount that lead improves lead smelting gas is added in bottom convertor, lead smelting gas collocation amount can be made to reach 50% even more high of lead concentrate amount, it is real
The extraction of existing lead.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount, comprises the following steps：
1) lead smelting gas, lead concentrate and additive of drying are subjected to dispensing, meet following condition after dispensing：FeO and SiO2
Mass ratio is (1.5~1.6)：1；CaO and SiO2Mass ratio is (0.45-0.6)：1；Pb mass fraction is more than 30%；S matter
Measure fraction and be more than 14%, obtain compound；
2) by compound through carrying out oxidizing semlting in the laggard stove to oxygen-enriched bottom-blowing of pelletizing, in-furnace temperature is controlled in 950-1100
DEG C, lead smelting gas is decomposed, and isolates a lead and clinker；The clinker that oxygen-enriched bottom-blowing stove comes out enters oxygen side-blowing by chute
Metal melting reduction furnace, then broken coal and flux are added into oxygen side blown metal melting reduction furnace, temperature control is in 1100-1200
DEG C reduction melting is carried out, lead forms secondary lead in the form of elementary lead, silver-colored to be present in the form of elemental silver in secondary lead, and iron is to aoxidize
Ferrous state is deposited to form reduction furnace clinker, and zinc is present in the form of zinc oxide in reduction furnace clinker；Wherein, the quality of lead smelting gas is
During lead concentrate quality 70%, then under oxygen-enriched bottom-blowing stove 18t/h inventorys, lead 1.5~2 is added to oxygen-enriched bottom-blowing stove per hour
Ton；When the quality of lead smelting gas is the 50% of lead concentrate quality, lead 0.9-1.1 tons are added into oxygen-enriched bottom-blowing stove per hour；Lead silver
When the quality of slag is the 40% of lead concentrate quality, lead 0.4-0.6 tons are added into oxygen-enriched bottom-blowing stove per hour；
3) reduction furnace clinker enters in fuming furnace, and is roused from the air port of fuming furnace into fine coal, in 1150-1300 DEG C of high temperature
Lower reduction volatilization slag tap in zinc and residual lead, in the form of oxide flue dust reclaim；
4) for entering the silver in a lead and secondary lead, in a lead and secondary lead during electrolytic lead refining enter
Enter the earth of positive pole, then silver is refined from the earth of positive pole；For entering zinc, lead in fuming furnace flue dust, flue dust is passed through into defluorinate dechlorination, it is wet
Method Leaching Zinc, electrodeposition carry zinc, and lead enters leached mud and smelts recovery lead by lead again.
The additive is the one or more in iron ore, lime stone, quartz sand, troilite, coal.
If S mass fraction is not more than 14%, add no more than lead smelting gas, lead concentrate and additive gross mass 3%
It is coal-fired.
The lead smelting gas of drying is obtained by procedure below in the step 1)：Zinc hydrometallurgy lead smelting gas is dried, made
It is 10-15% that moisture, which drops to mass fraction, the lead smelting gas dried.
The water content of the zinc hydrometallurgy lead smelting gas is 28-35%.
The temperature of the drying is 700 DEG C.
The addition of broken coal is the 10-15% for the clinker quality that oxygen-enriched bottom-blowing stove comes out in the step 2)；Flux adds
Enter amount so that slag composition meets the component requirements of the clinker of oxygen side blown metal melting reduction furnace；When step 2) adds lead, lead
For liquid lead.
The flux is lime stone.
The addition of fine coal is the 20-25% of the clinker quality of oxygen side blown metal melting reduction furnace in the step 3).
In the fine coal below the mesh of particle diameter 200 account for fine coal cumulative volume 80%.
Compared with prior art, the device have the advantages that：It is less than 50% for the leaded mass fraction of lead concentrate
When, lead smelting gas of the present invention is aoxidized by oxygen-enriched bottom-blowing stove pyrolytic, zinc is existed in the form of an oxide, and lead, silver are with oxide
Exist with simple substance form, sulphur enters flue gas in the form of sulfur dioxide, and liquid high lead dross is in oxygen side blown metal melting reduction furnace
Reduced, lead, silver are reduced to simple substance, it is well known that lead is the good collecting agent of silver, and so silver is just enriched in reduction furnace and produced
In lead bullion, zinc is largely still in slag, strengthens reduction recovery in fuming furnace；The present invention by by lead smelting gas with vulcanization
One or more of progress dispensings in lead concentrate, lead-containing material, iron ore, lime stone, quartz sand, troilite, coal so that mixing
The gross mass of material is the 50% of lead concentrate quality, after then entering granulation again, carries out oxidizing semlting in oxygen-enriched bottom-blowing stove successively,
Reduction melting is carried out in oxygen side blown metal melting reduction furnace, zinc during reduction volatilization is slagged tap under fuming furnace high temperature and residual
The lead stayed, finally for into the silver included in a lead and secondary lead, electrolytic lead refining is carried out in a lead and secondary lead
Enter the earth of positive pole in journey, then silver is refined from the earth of positive pole；For entering zinc, lead in fuming furnace flue dust, flue dust is passed through into defluorinate
Dechlorination, wet-leaching zinc, electrodeposition carry zinc, and lead enters leached mud and smelts recovery lead by lead again.
In the present invention by being come out of the stove middle addition lead to oxygen-enriched bottom, and it is to determine to mend according to the dosage of specific lead smelting gas
The amount of leading, overcome the problem of extraction lead can not being carried out using lead smelting gas for low-grade lead concentrate in the prior art.
Present invention process is simple, for lead concentrate leaded mass fraction be less than 50% when, raising lead smelting gas can be realized
Lift-launch amount, highest can realize lead smelting gas quality be lead concentrate quality 70%, reach from lead smelting gas refine lead and other
The purpose of element, lead smelting gas efficiently utilize technique by this, and lead recovery is about 95%, and zinc recovery is about 90%, silver recovery
Rate is about 95%, and utilization efficiency is about 90%.
Further, the present invention in oxygen-enriched bottom come out of the stove it is middle addition lead be liquid, mend lead while and can give bottom convertor benefit
Some heats are filled, the utilization of lead smelting gas are more beneficial for, beneficial to industrialized production.
Embodiment
The leaded mass fraction that the present invention is applied to lead concentrate is less than 50%, while refines lead and other elements using lead smelting gas
Situation.
The zinc hydrometallurgy lead smelting gas that water content is 28-35% is subjected to drying and processing by drying kiln at 700 DEG C,
It is 10-15% moisture is dropped to mass fraction, the lead smelting gas dried, is advantageous to next procedure dispensing and reduction using drying
Flue gas walks amount of heat from oxygen-enriched bottom-blowing furnace zone；The lead smelting gas, lead concentrate and additive of drying are subjected to dispensing, met after dispensing
FeO and SiO2Mass ratio is (1.5~1.6)：1；CaO and SiO2Mass ratio is (0.45-0.6)：1；Pb mass fraction is more than
30%；S mass fraction be more than 14%, if S mass fraction be not more than 14%, add no more than lead smelting gas, lead concentrate with
The fire coal of additive gross mass 3%, obtains compound；Wherein, the leaded mass fraction of lead concentrate is less than 50%；Additive is iron
One or more in ore, lime stone, quartz sand, troilite, coal.
The compound prepared is subjected to oxidizing semlting (continuous feed, slagging in 2 hours is once) through pelletizing into oxygen-enriched bottom-blowing stove,
In-furnace temperature is controlled at 950-1100 DEG C, and lead smelting gas is decomposed, and isolates a lead and clinker；Wherein, sulphur is with sulfur dioxide
Form enters flue gas, and relieving haperacidity is utilized, and silver is mainly present in clinker with silver oxide, and zinc is mainly present in clinker with zinc oxide,
A lead part is present in clinker with lead oxide, and a part forms a lead with elementary lead, and iron is mainly in the form of di-iron trioxide
It is present in clinker；Wherein, if the quality of lead smelting gas is lead concentrate quality 70%, in oxygen-enriched bottom-blowing stove 18t/h inventorys
Under, put into 1.5~2 tons of lead to oxygen-enriched bottom-blowing stove per hour；The quality of lead smelting gas be lead concentrate quality 50% when, per hour to
Lead 0.9-1.1 tons are mended in oxygen-enriched bottom-blowing stove；When the quality of lead smelting gas is the 40% of lead concentrate quality, per hour to oxygen-enriched bottom-blowing stove
Interior benefit lead 0.4-0.6 tons；
The leaded higher clinker that oxygen-enriched bottom-blowing stove comes out enters oxygen side blown metal melting reduction furnace by chute, then to
Broken coal and flux are added in oxygen side blown metal melting reduction furnace, temperature control system carries out reduction melting at 1100-1200 DEG C and (continuously entered
Material, slagging in 2 hours is once), lead mainly with elementary lead formed secondary lead, silver be present in elemental silver in secondary lead, zinc mainly with
Zinc oxide is present in clinker, and iron mainly forms clinker in the form of ferrous oxide；Wherein, the addition of broken coal is clinker quality
10-15%；Flux is lime stone, and the addition of lime stone causes slag composition to meet oxygen side blown metal melting reduction furnace
Clinker component requirements；Secondary lead and clinker are separated from oxygen-enriched bottom-blowing stove；Oxygen side blown metal melting reduction furnace
Clinker enters fuming furnace, is roused from the air port of fuming furnace into fine coal (in fine coal below the mesh of particle diameter 200 account for fine coal cumulative volume 80%),
The lead of zinc and residual during reduction volatilization is slagged tap under 1150-1300 DEG C of high temperature and strong reducing condition, with oxide flue dust shape
Formula reclaims, and the clinker of fuming furnace is Ordinary solid waste, is mainly used in building materials.
In lead bullion during electrolytic lead refining enter for entering the silver in lead bullion (including a lead and secondary lead)
The earth of positive pole, then silver is refined from the earth of positive pole；Into the zinc in fuming furnace flue dust, lead, flue dust is passed through into defluorinate dechlorination, wet-leaching
Zinc, electrodeposition carry zinc, and lead enters leached mud and smelts recovery lead by lead again.
Oxygen bottom blowing smelter (oxygen-enriched bottom-blowing stove is) is only applicable to the leaded high lead concentrate for being more than 50% (mass fraction)
Processing, and for leaded 40% or so or following low-grade lead concentrate, due to being unable to autogenous smelting and can not be at oxygen bottom
Blown converter directly produces lead bullion, causes the blowing-ouf of lines serious, shortens dramatically body of heater service life, and the leaded grade of slag reduces,
Slag melting point improves, and slag becomes sticky, and slagging is difficult, is also easy to produce foamed slag and emits slag accident, molten bath freezes to cause dead stove accident.It is and logical
Productive experiment is crossed, when lead smelting gas quality reaches lead concentrate quality 70%, under oxygen-enriched bottom-blowing stove 18t/h inventorys, often
Hour needs to put into small 1.5~2 tons of lead toward oxygen-enriched bottom-blowing stove；When lead smelting gas quality reaches lead concentrate quality 50%, often
Hour needs to mend 1 ton or so of lead toward in oxygen-enriched bottom-blowing stove；When lead smelting gas quality reaches lead concentrate quality 40%, need per hour
0.5 ton or so of lead is mended in toward oxygen-enriched bottom-blowing stove.By mending lead toward oxygen-enriched bottom-blowing stove, can preferably solve problem above.
In the present invention when thinking to mend in oxygen-enriched bottom-blowing stove lead, preferably lead is liquid lead.
The present invention by the way of liquid lead is added into oxygen-enriched bottom-blowing stove, and solves well when handling lead smelting gas
The problem of adding primary cutout, while and can supplements some heats to bottom convertor, be more beneficial for the utilization of lead smelting gas.Specific method
For：The liquid lead of oxygen-enriched side-blowing liquid reduction stove output is flowed to sheath by chute, then bottom blowing is mentioned by day handlebar sheath
Storage lead bath is poured at stove charging and liquid lead, liquid lead flows into bottom convertor by chute from bottom convertor charging aperture again.
Claims (8)
- A kind of 1. method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount, it is characterised in that including following step Suddenly：1) lead smelting gas, lead concentrate and additive of drying are subjected to dispensing, meet following condition after dispensing：FeO and SiO2Mass ratio For (1.5~1.6)：1；CaO and SiO2Mass ratio is (0.45-0.6)：1；Pb mass fraction is more than 30%；S mass fraction More than 14%, compound is obtained；2) by compound through carrying out oxidizing semlting in the laggard stove to oxygen-enriched bottom-blowing of pelletizing, in-furnace temperature is controlled at 950-1100 DEG C, Lead smelting gas is decomposed, and isolates a lead and clinker；The clinker that oxygen-enriched bottom-blowing stove comes out enters oxygen side-blowing gold by chute Belong to fusion reducing furnace, then broken coal and flux are added into oxygen side blown metal melting reduction furnace, temperature control is at 1100-1200 DEG C Reduction melting is carried out, lead forms secondary lead in the form of elementary lead, silver-colored to be present in the form of elemental silver in secondary lead, and iron is to aoxidize Asia Iron form is deposited to form reduction furnace clinker, and zinc is present in the form of zinc oxide in reduction furnace clinker；Wherein, the quality of lead smelting gas is lead During concentrate quality 70%, then under oxygen-enriched bottom-blowing stove 18t/h inventorys, 1.5~2 tons of lead is added to oxygen-enriched bottom-blowing stove per hour； When the quality of lead smelting gas is the 50% of lead concentrate quality, liquid lead 0.9-1.1 tons are added into oxygen-enriched bottom-blowing stove per hour；Lead silver When the quality of slag is the 40% of lead concentrate quality, liquid lead 0.4-0.6 tons are added into oxygen-enriched bottom-blowing stove per hour；3) reduction furnace clinker enters in fuming furnace, and is roused from the air port of fuming furnace into fine coal, at a high temperature of 1150-1300 DEG C also Former the volatilize zinc in slagging tap and the lead of residual, are reclaimed in the form of oxide flue dust；4) for entering the silver in a lead and secondary lead, carry out entering sun during electrolytic lead refining in a lead and secondary lead Pole mud, then silver is refined from the earth of positive pole；For entering zinc, lead in fuming furnace flue dust, flue dust is passed through into defluorinate dechlorination, wet method leaching Go out zinc, electrodeposition carries zinc, and lead enters leached mud and smelts recovery lead by lead again；The addition of fine coal is the 20-25% of the clinker quality of oxygen side blown metal melting reduction furnace in the step 3)；In the fine coal below the mesh of particle diameter 200 account for fine coal cumulative volume 80%.
- 2. a kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount according to claim 1, its It is characterised by, the additive is the one or more in iron ore, lime stone, quartz sand, troilite, coal.
- 3. a kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount according to claim 1, its It is characterised by, if S mass fraction is not more than 14%, adds no more than lead smelting gas, lead concentrate and additive gross mass 3% It is coal-fired.
- 4. a kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount according to claim 1, its It is characterised by, the lead smelting gas of drying is obtained by procedure below in the step 1)：Zinc hydrometallurgy lead smelting gas is dried, made It is 10-15% that moisture, which drops to mass fraction, the lead smelting gas dried.
- 5. a kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount according to claim 4, its It is characterised by, the water content of the zinc hydrometallurgy lead smelting gas is 28-35%.
- 6. a kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount according to claim 4, its It is characterised by, the temperature of the drying is 700 DEG C.
- 7. a kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount according to claim 1, its It is characterised by, the addition of broken coal is the 10-15% for the clinker quality that oxygen-enriched bottom-blowing stove comes out in the step 2)；Flux adds Enter amount so that slag composition meets the component requirements of the clinker of oxygen side blown metal melting reduction furnace.
- 8. a kind of method for improving zinc hydrometallurgy lead smelting gas high-efficiency resource recycling collocation amount according to claim 7, its It is characterised by, the flux is lime stone.
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| CN107299229B (en) * | 2017-06-06 | 2019-03-29 | 郴州市金贵银业股份有限公司 | The method for recycling high silver-colored cigarette ash and the various slag charges rich in silver in silver-colored smelting process |
| CN108342590B (en) * | 2018-02-25 | 2020-08-21 | 中南大学 | Method for hot-state mixing of high-arsenic gold ore calcine into side-blown reduction furnace of lead smelting system |
| CN108342589B (en) * | 2018-02-25 | 2020-06-02 | 中南大学 | Method for feeding high-arsenic gold ore calcine into bottom-blowing reduction furnace of lead smelting system in thermal state |
| CN109811141B (en) * | 2019-02-28 | 2021-06-08 | 西安建筑科技大学 | Lead smelting slag charging granules and preparation method thereof |
| CN112251615A (en) * | 2020-10-22 | 2021-01-22 | 西安建筑科技大学 | Method and device for controlling raw material moisture and smelting dust in lead bottom blowing smelting |
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| JP3727232B2 (en) * | 2000-09-26 | 2005-12-14 | 竹四 阿座上 | Zinc recovery method |
| CN101871725A (en) * | 2010-07-07 | 2010-10-27 | 中南大学 | Horizontal bottom blowing type molten pool desulphurizing furnace and oxidative desulphurization method for leaded materials |
| CN101985695A (en) * | 2010-11-22 | 2011-03-16 | 云南祥云飞龙有色金属股份有限公司 | Method for processing zinc leaching residues at high proportion by using oxygen bottom blown furnace |
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