CN110055418A - Realize the smelting system and method for smelting of lead anode slurry continuous multi-stage synthetical recovery - Google Patents
Realize the smelting system and method for smelting of lead anode slurry continuous multi-stage synthetical recovery Download PDFInfo
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- CN110055418A CN110055418A CN201910212375.7A CN201910212375A CN110055418A CN 110055418 A CN110055418 A CN 110055418A CN 201910212375 A CN201910212375 A CN 201910212375A CN 110055418 A CN110055418 A CN 110055418A
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- 238000011084 recovery Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000006256 anode slurry Substances 0.000 title claims abstract description 51
- 238000003723 Smelting Methods 0.000 title claims abstract description 46
- 238000002844 melting Methods 0.000 claims abstract description 31
- 230000008018 melting Effects 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 24
- 238000004064 recycling Methods 0.000 claims abstract description 23
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 19
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 13
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 12
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 12
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 11
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 67
- 239000007921 spray Substances 0.000 claims description 67
- 239000000463 material Substances 0.000 claims description 27
- 239000002893 slag Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 239000010970 precious metal Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000005272 metallurgy Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000004615 ingredient Substances 0.000 claims description 4
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 229910001254 electrum Inorganic materials 0.000 claims description 3
- XXOYNJXVWVNOOJ-UHFFFAOYSA-N fenuron Chemical compound CN(C)C(=O)NC1=CC=CC=C1 XXOYNJXVWVNOOJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- LJCFOYOSGPHIOO-UHFFFAOYSA-N antimony pentoxide Inorganic materials O=[Sb](=O)O[Sb](=O)=O LJCFOYOSGPHIOO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 239000011133 lead Substances 0.000 abstract description 57
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052737 gold Inorganic materials 0.000 abstract description 14
- 239000010931 gold Substances 0.000 abstract description 14
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052709 silver Inorganic materials 0.000 abstract description 13
- 239000004332 silver Substances 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000009776 industrial production Methods 0.000 abstract description 4
- 238000004093 laser heating Methods 0.000 abstract description 3
- 229910001092 metal group alloy Inorganic materials 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- HJTAZXHBEBIQQX-UHFFFAOYSA-N 1,5-bis(chloromethyl)naphthalene Chemical compound C1=CC=C2C(CCl)=CC=CC2=C1CCl HJTAZXHBEBIQQX-UHFFFAOYSA-N 0.000 abstract 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 229910000410 antimony oxide Inorganic materials 0.000 abstract 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 abstract 1
- 239000000047 product Substances 0.000 description 59
- 230000008569 process Effects 0.000 description 30
- 230000001698 pyrogenic effect Effects 0.000 description 12
- 229910000923 precious metal alloy Inorganic materials 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003818 cinder Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical group [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 238000010310 metallurgical process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003500 flue dust Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- CTVOIPHTLWLVGR-UHFFFAOYSA-N [Pb].O[Si](O)(O)O Chemical compound [Pb].O[Si](O)(O)O CTVOIPHTLWLVGR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000000184 acid digestion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 229960002594 arsenic trioxide Drugs 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- CCXYPVYRAOXCHB-UHFFFAOYSA-N bismuth silver Chemical compound [Ag].[Bi] CCXYPVYRAOXCHB-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- KTTMEOWBIWLMSE-UHFFFAOYSA-N diarsenic trioxide Chemical compound O1[As](O2)O[As]3O[As]1O[As]2O3 KTTMEOWBIWLMSE-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000011165 process development Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals from waste materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/02—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
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/04—Obtaining arsenic
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/06—Obtaining bismuth
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention discloses a kind of smelting system and method for smelting for realizing lead anode slurry continuous multi-stage synthetical recovery, belongs to non-ferrous metal secondary resource Comprehensive Recovery Technology field；The present invention is directed in lead anode slurry rich in valuable elements such as arsenic, antimony, bismuth, lead, gold, silver, it is difficult to a step in reduction melting and realizes the problem of arsenic, antimony, bismuth etc. efficiently separate, pass through three sections of non-isothermal laser heatings, first bringing-up section recycles arsenic trioxide, second bringing-up section recycles antimony oxide, third bringing-up section output metal alloy while realizing gold and silver enrichment, realizes the purpose for recycling a variety of valuable elements simultaneously within one device；Device systems of the present invention and method have the advantages that easy to operate, temperature control is accurate, and adaptability to raw material is strong, a variety of valuable element synchronous high-efficiency recycling, production process serialization, suitable scale industrial production.
Description
Technical field
The present invention relates to a kind of smelting systems and method of smelting for realizing lead anode slurry continuous multi-stage synthetical recovery, belong to color
The pyrogenic process Comprehensive Recovery Technology field of metal secondary resource.
Background technique
With increasingly depleted and environmental protection consciousness the continuous improvement of nonferrous metal resource, find efficient and environmental-friendly
Non-ferrous metal secondary resource comprehensive recycling process and equipment become domestic and international researcher problem in the urgent need to address.Lead
The earth of positive pole is because express thickness by the valuable source as valuable metals such as recycling gold and silver rich in valuable metals such as antimony, bismuth, gold, silver
It hopes, becomes the hot spot of countries nowadays emtallurgy research.In numerous lead anode slurry treatment process, the utilization of pyrogenic process traditional handicraft is the most
Extensively, how inexpensive, the valuable metal obtained to short route in lead anode slurry is comprehensive as lead anode slurry pyrogenic process is directly affected
An important factor for recycling economic benefit.Wherein how the valuable element in efficient synthetical recovery lead anode slurry, output high-quality
The precious metal alloys for meeting electrolysis demand are the core links of pyrogenic process ANODE SLIME TREATMENT process, therefore, a kind of efficient, low cost
Lead anode slurry comprehensive reutilization technology is of great significance to lead anode slurry pyrogenic attack technological development.
Currently, the processing method of lead anode slurry can be divided mainly into two classes, one kind is wet process smelting technique, mainly includes villaumite
Lixiviation process, fluosilicic acid lixiviation process, ferric trichloride lixiviation process, control current potential chloridising, chlorination-cracking process, sodium hydroxide normal pressure leaching
The wet processing of method, sodium hydroxide pressure leaching process etc., the earth of positive pole has reaction process reliable, and environment influences the features such as small, but
In the presence of a large amount of chemical reagent of consumption, the unfavorable factors such as wastewater treatment capacity is big, and equipment is various.Another kind of is vacuum processing techniques, elder brother
The units such as bright Polytechnics, Central South University have carried out scientific experiment to the vacuum processing techniques of lead anode slurry and have achieved actively
Progress.Technology there are also a kind of processing lead anode slurry is traditional pyrometallurgical smelting process, and lead anode slurry is generallyd use both at home and abroad
Pyrometallurgical smelting-refinement oxide-electrolysis method traditional handicraft, although process flow with the difference of material composition and slightly difference,
But basic ideas are exactly the same, and core content is that the earth of positive pole is incorporated the auxiliary materials such as soda ash, fluorite, coke in weak reducing atmosphere
Under, carry out reduction melting and be enriched with gold and silver, obtain gold and silver grade in the precious metals containing lead of 20%-30%, the further refinement oxide of precious metals containing lead remove antimony,
Arsenic, bismuth, oxidative slagging recycling tellurium obtain the electrum plate for meeting electrolysis requirement by founding.Alloy sheets electrorefining obtains
Electrolytic silver powder and electrolysis anode sludge, electrolytic silver powder is by washing, drying, silver ingot of the ingot casting output grade 99.99% or more, electricity
The earth of positive pole is solved through pernitric acid digestion, chlorination parting, extraction, gold reduction, washing, drying, ingot casting output grade 99.99% or more
Ingot.Not only have in flue dust technology gathering dust by the pyrogenic process traditional handicraft for being continually striving to lead anode slurry of metallargist
Develop on a large scale very much, but also the introducings such as oxygen-enriched bottom-blowing technology and molten pool melting technology, bottom blowing and top-blown converter technology production is answered
With so that the pyrogenic process synthetical recovery of lead anode slurry achieves very big effect.But these types of complex technical process, to equipment and fire resisting
More demanding, and the technology transfer higher cost of material, domestic enterprise use less.The technique of pyrogenic attack anode is ground at present
To study carefully and is concentrated mainly in the improvement of smelting equipment and process route, traditional firing method process is the main process flow of lead anode slurry,
It is widely applied in the whole nation, major advantage is: fast to the adaptable of raw material, chemical reaction velocity, equipment is simple, processing capacity
Greatly, equipment is reliable, convenient for operation, is easy to implement and convenient for management etc..
Although lead anode slurry traditional thermal process development be it is highly developed, there is also many disadvantages, such as process
It is long, equipment is more, gold and silver direct yield is low, damage by fume pollution environment and working condition badly etc..Furthermore pyrogenic process tradition smelting process is wherein
There is also two problems: 1. equipment cannot achieve the efficient difference for a variety of valuable metals during lead anode slurry reduction melting
Recycling；2. the precious metals containing lead of reduction melting output need to be transported in another refinement oxide furnace and be handled, energy consumption, time-consuming, work efficiency is low,
Often there is flue gas spilling in transhipment, environmental pollution is larger, and there is also security risks.
Summary of the invention
It is difficult for valuable metal synthetical recoveries a variety of during lead anode slurry pyrogenic attack, reduction melting and refinement oxide
It is difficult to a problems such as step is realized, the present invention provides a kind of smelting systems for realizing lead anode slurry continuous multi-stage synthetical recovery.
The present invention realizes the smelting system of lead anode slurry continuous multi-stage synthetical recovery, by using in same smelting equipment
Multistage non-isothermal laser heating is realized the efficient independent recycling of arsenic, antimony in preceding two bringing-up section, is produced in finally heated section of one step of realization
It is suitble to the precious metal alloys of electrorefining out, realizes the continuous comprehensive reutilization of the multistage of valuable metal, the system is by lead anode
The metallurgical processes such as reduction melting, the refinement oxide of mud form a continuously production process in integral type smelting furnace, tool
Have that operating procedure is simple, temperature control is accurate, material gravity flow, is suitble to scale industrial production, can be realized and work continuously convenient for management
The advantages that.
The present invention realizes that the smelting system of lead anode slurry continuous multi-stage synthetical recovery heats smelting furnace and 3 by continuous non-isothermal
A Product Collection System composition；The continuous non-isothermal heating smelting furnace is added by first segment low-temperature heat recovery furnace, second segment
The integral type metallurgical furnace of recuperation of heat furnace, third section melting output furnace composition, first segment low-temperature heat recovery furnace, second segment heat back
The furnace bottom for receiving furnace and third section melting output furnace is sequentially communicated and in the inclined-plane continuously reduced, it can be achieved that the gravity flow of material, gravity flow
The angle of gradient is 20 °~35 °；3 Product Collection Systems respectively with first segment low-temperature heat recovery furnace, second segment heating recovery furnace,
The connection of third section melting output furnace；
Wherein, first segment low-temperature heat recovery furnace includes cylindrical furnace I, furnace transformer I, feed bin I, metering valve I, heating electricity
Pole I, material and compressed ir spray gun I, products export I, flue shut-off valve I, spray gun I pass through setting at the top of cylindrical furnace I and exist
In cylindrical furnace I, the setting of feed bin I is at I top of spray gun and communicates therewith, and metering valve I is arranged in I bottom of feed bin, 3 or more
The rounded setting of electrode I is heated around spray gun I, I top side of cylindrical furnace is provided with products export I, sets on products export I
It is equipped with flue shut-off valve I, products export I is connected to Product Collection System, and furnace transformer I and heating electrode I connect；
The Product Collection System connecting with first segment low-temperature heat recovery furnace includes condenser I, bagroom I, spiral
Conveyer I, products export I are connect by condenser I with bagroom I, and screw conveyor I is arranged under bagroom I
Square exit；
The spray gun I is the spray gun of double-layer cavity comprising outer tube and inner tube, outside inner tube, inner tube and feed bin I connect outer tube sleeve
Logical transferring raw material, outer tube (outer layer cavity) are connect with compressed air pipe for conveying air.
Second segment heating recovery furnace includes cylindrical furnace II, furnace transformer II, heating electrode II, spray gun II, feeds intake
Mouthful, products export II, feeding port is provided at the top of cylindrical furnace II, spray gun II, which passes through, to be arranged at the top of cylindrical furnace II in cylinder
In shape furnace body II, metering valve II is provided on spray gun II, 3 or more heating electrodes II are rounded to be arranged around spray gun II,
II top side of cylindrical furnace is provided with products export II, and flue shut-off valve II, products export II are provided on products export II
It is connect with Product Collection System, furnace transformer II and heating electrode II connect；
The Product Collection System connecting with second segment heating recovery furnace includes condenser II, bagroom II, spiral transferring
Machine II is sent, products export II is connect by condenser II with bagroom II, and screw conveyor II is arranged in bagroom
At II lower exit port；
Third section melting output furnace includes cylindrical furnace III, furnace transformer III, feed bin II, heating electrode III, products export
III, metering valve III, spray gun III, slag outlet, metal outlet, spray gun III, which is crossed at the top of cylindrical furnace III, to be arranged in cylindrical furnace
In III, the setting of metering valve III is arranged on III top of spray gun and communicates therewith, 3 in feed bin II and III junction of spray gun, feed bin II
Above heating electrode III is rounded to be arranged around spray gun III, and III top side of cylindrical furnace is provided with products export III, produces
It is provided with flue shut-off valve III in product outlet III, products export III is connect with Product Collection System, and III lower part of cylindrical furnace is opened
There are slag outlet, metal outlet, furnace transformer III is connect with heating electrode III.
The spray gun III is the spray gun of double-layer cavity comprising outer tube and inner tube, outer tube sleeve is outside inner tube, inner tube and material
Storehouse I is connected to transferring raw material, and outer tube (outer layer cavity) is connect with compressed air pipe for conveying air.
The Product Collection System connecting with third section melting output furnace includes condenser III, bagroom III, spiral shell
Conveyer III is revolved, products export III is connect by condenser III with bagroom III, and the setting of screw conveyor III is received in cloth bag
At III lower exit port of dirt device.
It is provided with baffle I at the first segment low-temperature heat recovery furnace and second segment heating recovery furnace furnace bottom linkage section, the
It is provided with baffle II at the furnace bottom linkage section of two sections of heating recovery furnaces and third section melting output furnace, heat preservation is coated on linkage section
Heat-insulating material, it is ensured that effective reaction time of the material in each bringing-up section.
The furnace transformer I, furnace transformer II, furnace transformer III realize the accurate temperature controlling of each bringing-up section, become
Depressor is metallurgical furnace transformer, and the range of regulation of constant current section design is no more than 5V, and enhancing invariable power segment limit guarantees
The accuracy controlling of secondary side voltage reaches the target of accurate control smelting temperature.
It is described heating electrode I, heating electrode II or heat electrode III electrode center circular diameter and burner hearth of the furnace body diameter it
Than for 1:1.2~1.6.
Another object of the present invention is to provide the application method of above-mentioned apparatus, and the method for the present invention sets lead anode in same smelting
Standby three sections of non-isothermal laser heatings of middle realization, segmentation successively recycle arsenic, antimony metal alloy of the output rich in gold and silver simultaneously, keep lead positive
The reduction melting of pole mud, refinement oxide are realized in same equipment and are successively carried out.The first two bringing-up section volatilization output
As2O3And Sb2O3Finished product recycling is realized by products export-condenser-bag filter-screw conveyor, in the third of furnace body
Bringing-up section is moved towards according to the difference of earth of positive pole ingredient and the economic benefit reasonable arrangement valuable element of recycling, and output is suitble to electrolysis
Precious metal alloys, device systems of the present invention and method have it is easy to operate, temperature control is accurate, adaptability to raw material is extremely strong, a variety of
The advantages that valuable metal synchronous high-efficiency recycling, production process serialization, suitable scale industrial production.
The method of the present invention the following steps are included:
(1) lead anode slurry pre-processes: lead anode slurry being crushed, is dried, lead anode slurry water content is less than 2%；
(2) it is calculated and is reacted back by metallurgy according to the chemical component and treating capacity of the metals such as arsenic, antimony, bismuth, lead in lead anode slurry
Carbon-to-oxygen ratio needed for receiving, and ingredient；
(3) arsenic in first segment low-temperature heat recycling lead anode slurry: metallurgical material that step (2) is prepared and compressed air by
Spray gun I is put into first segment low-temperature heat recovery furnace, and adjusting furnace temperature is 450~500 DEG C, most arsenic in the earth of positive pole with
As2O3Form volatilization, and recycled from products export I, remaining element stays in furnace charge, and the gravity flow angle of gradient is 20 °~35 °；
(4) baffle I is opened, allowing material from flowing to, second segment heating recovery furnace is interior to carry out second segment heating recovery antimony, adjusting furnace temperature
Be 700~750 DEG C, carbonaceous reducing agent put into furnace body by batching hole according to charging characteristics, it is ensured that Sb it is not oxidized at
Sb2O5, make it with Sb2O3The cooling recycling of form volatilization；The angle of gradient of flowing automatically is 20 °~35 °；
(5) baffle II is opened, the furnace charge that step (4) obtains is flowed automatically in third section melting output furnace, if the high Shi Ze of lead content
Slag former is sprayed by spray gun III to remove bismuth, by spray gun III spray into it is oxygen-enriched carry out oxidation blowing, output is rich in electrum, if bismuth
Content is high, then slag former is added by lead and removes the thick bismuth of output melting, concentration of precious metal electrolysis in thick bismuth refines.
It, can be reasonable in same equipment according to lead anode slurry raw material condition and production reality by step (1) to step (5)
Element trend is arranged, to realize efficiently separating and being enriched with for the valuable elements such as arsenic, antimony, bismuth, gold, silver.
The reagent and the carbonaceous reducing agent in step (4) of control carbon-to-oxygen ratio can be anthracite, high fixed carbon in step (2)
Low-ash lignite semi-coke, smelter coke carbon etc.；The bismuth slag former that removes in step (5) is calcium and magnesium mix reagent, it can be achieved that depth
Except bismuth, except the slag former of lead is silica.
The invention has the benefit that
(1) the present invention relates to a kind of comprehensive recovery system of lead anode slurry, the system by being heated to the continuous multiterminal of lead anode slurry,
The segmentation volatilization of valuable element is realized in different temperature zones, and the comprehensive utilization of lead anode slurry may be implemented；
(2) the present invention relates to a kind of continuous non-multistages of lead anode slurry to recycle method of smelting, is a kind of inexpensive, easy to operate
Method, this method have many advantages, such as that operation is easy, adaptability to raw material is extremely strong, are suitble to scale industrial production.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of smelting system of the present invention；
Fig. 2 is the overlooking structure diagram of smelting system of the present invention；
Fig. 3 is continuous non-isothermal heating smelting furnace structural schematic diagram；
Fig. 4 is continuous non-isothermal heating smelting furnace overlooking structure diagram；
In figure: 1- bagroom I；2- condenser I；3- furnace transformer I；4- feed bin I；5- heats electrode I；6- electric furnace transformation
Device II；7- heats electrode II；8- furnace transformer III；9- feed bin II；10- heats electrode III；11- condenser III；12- cloth bag is received
Dirt device III；13- screw conveyor I；14- outer tube；15- baffle I；16- inner tube；17- baffle II；18- cinder ladle；19- helical feed
Machine III；20- furnace bottom；21- condenser II；22- bagroom II；23- products export I；24- products export II；25- product goes out
Mouth III；26- metering valve I；27- metering valve II；28- metering valve III；29- spray gun I；30- spray gun II；31- spray gun III；32- feeds intake
Mouthful；33- screw conveyor II；34- flue shut-off valve I；35- flue shut-off valve II；36- flue shut-off valve III；37- clinker goes out
Mouthful；38- metal outlet.
Specific embodiment
Below by embodiment, invention is further described in detail, but the scope of the present invention is not limited in described
Hold.
Embodiment 1: as shown in Figure 1,2,3, 4, the smelting system of this realization lead anode slurry continuous multi-stage synthetical recovery is special
Sign is: heating smelting furnace by continuous non-isothermal and 3 Product Collection Systems form；
The continuous non-isothermal heating smelting furnace is by first segment low-temperature heat recovery furnace, second segment heating recovery furnace, third section
The integral type metallurgical furnace of melting output furnace composition, first segment low-temperature heat recovery furnace, second segment heating recovery furnace and third Duan Rong
The furnace bottom 20 of refining output furnace is sequentially communicated and in the inclined-plane continuously reduced, it can be achieved that the gravity flow of material, the gravity flow angle of gradient are 30 °；
The Product Collection System connecting with first segment low-temperature heat recovery furnace includes condenser I 2, bagroom I 1, screw conveyor I
13, products export I 23 is connect by condenser I 2 with bagroom I 1, and screw conveyor I 13 is arranged in bagroom I 1
At lower exit port；The Product Collection System being connect with second segment heating recovery furnace include condenser II 21, bagroom II 22,
Screw conveyor II 33, products export II are connect by condenser II 21 with bagroom II 22, and screw conveyor II 33 is set
It sets at II 22 lower exit port of bagroom；The Product Collection System connecting with third section melting output furnace includes condenser III
11, bagroom III 12, screw conveyor III 19, products export III 25 are connected by condenser III 11 and bagroom III 12
It connects, screw conveyor III 19 is arranged at III 12 lower exit port of bagroom；
Wherein, first segment low-temperature heat recovery furnace includes cylindrical furnace I, furnace transformer I 3, feed bin I 4, metering valve I 26, adds
Thermode I 5, material and compressed ir spray gun I 29, products export I 23, flue shut-off valve I 34, spray gun I 29 pass through cylindrical furnace
It is arranged in cylindrical furnace I at the top of body I, the setting of feed bin I 4 is at I top of spray gun and communicates therewith, and the setting of metering valve I 26 is being expected
I 4 bottom of storehouse, 3 heating electrodes I 5 are rounded to be arranged around spray gun I, and I top side of cylindrical furnace is provided with products export I
23, flue shut-off valve I 34 is provided on products export I 23, and products export I 23 is connected to Product Collection System, furnace transformer I
3 connect with heating electrode I 5；Second segment heating recovery furnace include cylindrical furnace II, furnace transformer II 6, heating electrode II 7,
Spray gun II 30, feeding port 32, products export II 24, feeding port 32 is provided at the top of cylindrical furnace II, and spray gun II 30 passes through cylinder
It is arranged in cylindrical furnace II at the top of shape furnace body II, II 27,3 heating electrodes II 7 of metering valve is provided on spray gun II in circle
Shape is arranged around spray gun II, and II top side of cylindrical furnace is provided with products export II 24, is provided on products export II 24
Flue shut-off valve II 35, products export II 24 are connect with Product Collection System, and furnace transformer II 6 and heating electrode II connect；
Third section melting output furnace includes cylindrical furnace III, furnace transformer III 8, feed bin II 9, heating electrode III 10, products export
III 25, metering valve III 28, spray gun III 31, slag outlet 37, metal outlet 38, spray gun III 31, which is crossed at the top of cylindrical furnace III, to be arranged
In cylindrical furnace III, the setting of metering valve III 28 is arranged in feed bin II 9 and III 31 junction of spray gun, feed bin II 9 in spray gun III
31 tops simultaneously communicate therewith, and 3 heating electrodes III 10 are rounded to be arranged around spray gun III, and III top side of cylindrical furnace is opened
There is products export III 25, flue shut-off valve III 36, products export III 25 and Product Collection System are provided on products export III 25
Connection, III lower part of cylindrical furnace are provided with slag outlet 37, metal outlet 38, and furnace transformer III 8 and heating electrode III 10 connect
It connects；The spray gun I is the spray gun of double-layer cavity comprising outer tube 14 and inner tube 16, outer tube 14 are sleeved on outside inner tube 16, inner tube 16
Transferring raw material, outer tube 14(outer layer cavity are connected to feed bin I) it connect with compressed air pipe for conveying air；The spray gun III
For the spray gun of double-layer cavity comprising outer tube and inner tube, outer tube sleeve is outside inner tube, and inner tube is connected to transferring raw material with feed bin I, outside
Pipe is connect with compressed air pipe for conveying air；First segment low-temperature heat recovery furnace and second segment heating recovery furnace furnace bottom connect
It is provided with baffle I 15 at connecing section, is provided with gear at the furnace bottom linkage section of second segment heating recovery furnace and third section melting output furnace
Plate II 17 is coated with heat-insulation material on linkage section；
The function of each section of products export is to provide the metal product outlet that gaseous state volatilizes, and recycles by recovery system,
Flue shut-off valve can realize the connection and closure of products export, heating electrode I, heating electrode II or the electrode pole for heating electrode III
Circle diameter and burner hearth of the furnace body diameter ratio are 1:1.3；
Each section of furnace transformer is the key equipment for guaranteeing each section of heated for controlling temperature, and design of transformer is to try to expand invariable power Duan Fan
It encloses, secondary side voltage degree of amplitude modulation is no more than 5V, it can be achieved that temperature has accurate control, and transformer capacity successively increases, with full
The demand for heat of each section of furnace body of foot.For feed bin for storing material, each section of metering valve can realize the accurate control of metallurgical material, double-deck
Spray gun can realize the dispensing of metallurgical material and the introducing of compressed air while optimize metallurgy kinetics condition.Set by second segment furnace roof
The feeding port set can put into metallurgy additive into burner hearth as needed, be conducive to Product recycling.Third section hearth wall is equipped with clinker
Outlet, metal outlet are discharged for deslagging and precious metal alloys, according to process requirements, can be completed in third section melting output furnace
The metallurgical processes such as slag making, volatilization, melting.By condenser, bagroom, the Product Collection System of the compositions such as screw conveyor is not
It can be only used for the recycling of each section of product, can also flue gas be made effectively to be purified, qualified discharge.
Main valuable element in lead anode slurry is As, Sb, Bi, Pb, Au, Ag.It, can for the above-mentioned valuable element of synthetical recovery
It is realized by following smelting processes: (1) metallurgical material prepared by technique requirement being transported to feed bin I 4 with multifunctional running, opened
Metering valve I 26；It closes I 15 pairs of first segment low-temperature heat recovery furnaces of baffle to heat, while the metallurgical material that investment prepares, root
Compressed air is blasted by spray gun I 29 according to technique carbon-to-oxygen ratio, the sufficiently reaction of 450-500 DEG C of temperature is controlled according to quality of material, passes through object
The cooling recycling of material recovery system obtains pure As2O3, exported by screw conveyor I 13, be transported to the white arsenic storage of finished room
Area；(2) opening baffle I 15 makes material from flowing to second segment heating recovery furnace, can be as desired by feeding port 32 to second segment
Metallurgy additive is put into heating recovery furnace and compressed air is introduced by spray gun II 30, is heated furnace charge by furnace transformer II 6
700-750 DEG C of constant temperature simultaneously reacts sufficiently, passes through the cooling recycling Sb of material recovering system2O3, it is exported by screw conveyor II 33,
It is transported to the stibium trioxide storage area of finished room；(3) opening baffle II 17 makes material from third section melting output furnace is flow to, in this section of furnace
It needs to arrange element trend according to the ingredient of furnace charge in vivo: 1. if Pb content is higher in furnace charge, can be put by spray gun III 31
Calcium and magnesium mix reagent depth removes Bi, and is released by slag outlet 37, the bored Slag treatment of slag bath is transported to through cinder ladle 18, to the end of slagging
After blocking cinder notch, then compressed air realization is introduced by spray gun III 31 and is blown to the precious metals containing lead rich in gold and silver, lead is led in the form of PbO
It crosses Product Collection System and carries out cooling recycling, gone out by screw conveyor III 19, be transported to the lead oxide storage area of finished room, produced
Precious metal alloys out send electrorefining after being transported to founding section founding by cinder ladle 18；2., can if Bi content is higher in furnace charge
Siliceous flux is put by spray gun III 31, Pb is made into the removing of silicic acid lead skim depth, and released by slag tap (B), through cinder ladle
(18) it is transported to the bored Slag treatment of slag bath, after slagging terminates to block slag outlet 37, by 38 output of metal outlet rich in the thick of gold and silver
Bismuth melt, the precious metal alloys of output are transported to after founding section founding by cinder ladle 18 send electrorefining to obtain cathode bismuth and in the earth of positive pole
Middle recycling gold and silver, react generation flue dust gathered dust by Product Collection System after qualified discharge.
The smelting system and method for smelting of this realization lead anode slurry continuous multi-stage synthetical recovery, overcome lead anode slurry pyrogenic process
Deficiency in treatment process, main feature with:
(1) system is using three sections of continuous non-isothermals heating, heating temperature can accuracy controlling, it is positive that lead is realized in a smelting furnace
The continuous synthetical recovery of the multistage of valuable element, Product Collection System are effectively reliable in the mud of pole；
(2) system concentrates on reduction melting in traditional lead anode slurry pyrogenic attack technique, two metallurgical processes such as refinement oxide
It is completed in same seat smelting furnace, a step output meets the precious metal alloys that electrolysis requires, and eliminates in molten metal transport process
Energy consumption, overflow flue gas and security risk, reduce environmental pollution；
(3) adaptability to raw material of system is strong, can move towards in the last one bringing-up section reasonable arrangement element, adjust according to the actual situation
Products scheme realizes the valuable metal in efficient recycling lead anode slurry, enhances pyrometallurgical processes；
(4) device systems of the present invention and method have easy to operate, and material gravity flow, production process serialization is suitble to scale
The advantages that chemical industry production is convenient for management.
Embodiment 2: for the present embodiment apparatus structure with embodiment 1, difference is continuous non-isothermal heating smelting furnace furnace bottom slope
25 ° of angle is spent, heating electrode I, the electrode center circular diameter of heating electrode II or heating electrode III and burner hearth of the furnace body diameter ratio are
1:1.5。
Claims (7)
1. a kind of smelting system for realizing lead anode slurry continuous multi-stage synthetical recovery, it is characterised in that: heated by continuous non-isothermal
Smelting furnace and 3 Product Collection System compositions；
The continuous non-isothermal heating smelting furnace is by first segment low-temperature heat recovery furnace, second segment heating recovery furnace, third section
The integral type metallurgical furnace of melting output furnace composition, first segment low-temperature heat recovery furnace, second segment heating recovery furnace and third Duan Rong
The furnace bottom of refining output furnace is sequentially communicated and in the inclined-plane that continuously reduces, 3 Product Collection Systems respectively with first segment low-temperature heat
Recovery furnace, second segment heating recovery furnace, the connection of third section melting output furnace；
Wherein, first segment low-temperature heat recovery furnace includes cylindrical furnace I, furnace transformer I (3), feed bin I (4), metering valve I
(26), electrode I (5), material and compressed ir spray gun I (29), products export I (23), flue shut-off valve I (34), spray gun I are heated
(29) it passing through at the top of cylindrical furnace I and is arranged in cylindrical furnace I, feed bin I (4) setting is at I top of spray gun and communicates therewith,
Metering valve I (26) setting is in feed bin I (4) bottom, and 3 or more heating electrodes I (5) are rounded to be arranged around spray gun I, cylinder
I top side of shape furnace body is provided with products export I (23), flue shut-off valve I (34) is provided on products export I (23), product goes out
I (23) of mouth are connected to Product Collection System, furnace transformer I (3) and heating electrode I (5) connection；
Second segment heating recovery furnace includes cylindrical furnace II, furnace transformer II (6), heating electrode II (7), spray gun II
(30), feeding port (32), products export II (24) are provided with feeding port (32) at the top of cylindrical furnace II, and spray gun II (30) passes through
It is arranged in cylindrical furnace II at the top of cylindrical furnace II, metering valve II (27), 3 or more heating is provided on spray gun II
Electrode II (7) is rounded to be arranged around spray gun II, and II top side of cylindrical furnace is provided with products export II (24), and product goes out
Mouth is provided with flue shut-off valve II (35) on II (24), and products export II (24) is connect with Product Collection System, furnace transformer
II (6) and heating electrode II (7) connection；
Third section melting output furnace includes cylindrical furnace III, furnace transformer III (8), feed bin II (9), heating electrode III
(10), products export III (25), metering valve III (28), spray gun III (31), slag outlet (37), metal outlet (38), spray gun III
(31) it crosses at the top of cylindrical furnace III and is arranged in cylindrical furnace III, metering valve III (28) is arranged in feed bin II (9) and spray gun
III (31) junction, feed bin II (9) are arranged on spray gun III (31) top and communicate therewith, 3 or more heating electrodes III (10)
Rounded to be arranged around spray gun III, III top side of cylindrical furnace is provided with products export III (25), products export III (25)
On be provided with flue shut-off valve III (36), products export III (25) is connect with Product Collection System, and III lower part of cylindrical furnace is opened
There are slag outlet (37), metal outlet (38), furnace transformer III (8) is connect with heating electrode III (10).
2. the smelting system according to claim 1 for realizing lead anode slurry continuous multi-stage synthetical recovery, it is characterised in that: spray
Rifle I or spray gun III are the spray gun of double-layer cavity comprising outer tube (14) and inner tube (16), outer tube (14) are sleeved on inner tube (16)
Outside, inner tube (16) is connected to transferring raw material with feed bin I or feed bin II, and outer tube (14) is connect with compressed air pipe for conveying sky
Gas.
3. the smelting system according to claim 1 for realizing lead anode slurry continuous multi-stage synthetical recovery, it is characterised in that: with
The Product Collection System of first segment low-temperature heat recovery furnace connection includes condenser I (2), bagroom I (1), helical feed
Machine I (13), products export I (23) are connect by condenser I (2) with bagroom I (1), and screw conveyor I (13) setting exists
At bagroom I (1) lower exit port；The Product Collection System connecting with second segment heating recovery furnace includes condenser II
(21), bagroom II (22), screw conveyor II (33), products export II pass through condenser II (21) and bagroom
II (22) connection, screw conveyor II (33) are arranged at bagroom II (22) lower exit port；With third section melting output
The Product Collection System of furnace connection includes condenser III (11), bagroom III (12), screw conveyor III (19), and product goes out
III (25) of mouth are connect by condenser III (11) with bagroom III (12), and screw conveyor III (19) is arranged in bag collection
At device III (12) lower exit port.
4. the smelting system according to claim 1 for realizing lead anode slurry continuous multi-stage synthetical recovery, it is characterised in that: the
It is provided with baffle I (15) at one section of low-temperature heat recovery furnace and second segment heating recovery furnace furnace bottom linkage section, second segment heats back
It receives and is provided with baffle II (17) at the furnace bottom linkage section of furnace and third section melting output furnace, heat preservation heat insulating material is coated on linkage section
Material.
5. the smelting system according to claim 1 for realizing lead anode slurry continuous multi-stage synthetical recovery, it is characterised in that: even
The continuous non-isothermal heating smelting furnace furnace bottom angle of gradient is 20 °~35 °.
6. the smelting system according to claim 1 for realizing lead anode slurry continuous multi-stage synthetical recovery, it is characterised in that: add
Thermode I, the electrode center circular diameter of heating electrode II or heating electrode III and burner hearth of the furnace body diameter ratio are 1:1.2~1.6.
7. the method for smelting of any one of the claim 1-6 smelting system for realizing lead anode slurry continuous multi-stage synthetical recovery,
Characterized by comprising the following steps:
(1) lead anode slurry is crushed, dried, lead anode slurry water content is less than 2%；
(2) reaction recycling is calculated by metallurgy according to arsenic, antimony, bismuth, the chemical component of lead metal and treating capacity in lead anode slurry
Required carbon-to-oxygen ratio, and ingredient；
(3) arsenic in first segment low-temperature heat recycling lead anode slurry: metallurgical material that step (2) is prepared and compressed air by
Spray gun I is put into first segment low-temperature heat recovery furnace, and adjusting furnace temperature is 450~500 DEG C, most arsenic in the earth of positive pole with
As2O3Form volatilization, and recycled from products export I, remaining element stays in furnace charge, and the gravity flow angle of gradient is 20 °~35 °；
(4) baffle I is opened, allowing material from flowing to, second segment heating recovery furnace is interior to carry out second segment heating recovery antimony, adjusting furnace temperature
Be 700~750 DEG C, carbonaceous reducing agent put into furnace body by batching hole according to charging characteristics, it is ensured that Sb it is not oxidized at
Sb2O5, make it with Sb2O3The cooling recycling of form volatilization；The angle of gradient of flowing automatically is 20 °~35 °；
(5) baffle II is opened, the furnace charge that step (4) obtains is flowed automatically in third section melting output furnace, if the high Shi Ze of lead content
Slag former is sprayed by spray gun III to remove bismuth, by spray gun III spray into it is oxygen-enriched carry out oxidation blowing, output is rich in electrum, if bismuth
Content is high, then slag former is added by lead and removes the thick bismuth of output melting, concentration of precious metal electrolysis in thick bismuth refines.
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