CN110106363A - A kind of continuous fuming production technology of modularization - Google Patents
A kind of continuous fuming production technology of modularization Download PDFInfo
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- CN110106363A CN110106363A CN201910419302.5A CN201910419302A CN110106363A CN 110106363 A CN110106363 A CN 110106363A CN 201910419302 A CN201910419302 A CN 201910419302A CN 110106363 A CN110106363 A CN 110106363A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 43
- 238000005516 engineering process Methods 0.000 title claims abstract description 30
- 239000002893 slag Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 238000006722 reduction reaction Methods 0.000 claims abstract description 20
- 230000009467 reduction Effects 0.000 claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 239000002918 waste heat Substances 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 14
- 239000003500 flue dust Substances 0.000 claims abstract description 11
- 238000011084 recovery Methods 0.000 claims abstract description 9
- 238000004064 recycling Methods 0.000 claims abstract description 9
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 150000002739 metals Chemical class 0.000 claims abstract description 7
- 238000003723 Smelting Methods 0.000 claims abstract description 6
- 238000005272 metallurgy Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000009189 diving Effects 0.000 claims abstract description 5
- 238000004073 vulcanization Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000002699 waste material Substances 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 7
- 239000002817 coal dust Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000003818 cinder Substances 0.000 claims description 4
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000002671 adjuvant Substances 0.000 claims description 2
- 239000003570 air Substances 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 238000012805 post-processing Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 20
- 239000011701 zinc Substances 0.000 description 15
- 230000008018 melting Effects 0.000 description 14
- 238000002844 melting Methods 0.000 description 14
- 229910052725 zinc Inorganic materials 0.000 description 13
- 235000016804 zinc Nutrition 0.000 description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 10
- 239000011787 zinc oxide Substances 0.000 description 10
- 238000010790 dilution Methods 0.000 description 7
- 239000012895 dilution Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000001603 reducing effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000005083 Zinc sulfide Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910001887 tin oxide Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000255964 Pieridae Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- MRZMQYCKIIJOSW-UHFFFAOYSA-N germanium zinc Chemical compound [Zn].[Ge] MRZMQYCKIIJOSW-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002736 metal compounds Chemical group 0.000 description 1
- 238000001883 metal evaporation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-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
- 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
-
- 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
- C22B25/00—Obtaining tin
- C22B25/02—Obtaining tin 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
- C22B25/00—Obtaining tin
- C22B25/06—Obtaining tin from scrap, especially tin scrap
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
- C22B7/002—Dry processes by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)
-
- 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
- C22B7/04—Working-up slag
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 invention discloses a kind of continuous fuming production technologies, it include: that continuous fuming furnace is formed by one or more function molten bath, technique for fuming production, function molten bath structure proximate, its slag line depth is more than 1.0 meters of molten bath, latent slag burner is arranged along function molten bath side wall surrounding, and spout is below slag line, molten state or cold conditions are introduced directly into containing valuable metal metallurgy smelting materials, or function molten bath is added into after being pretreated again, pass through the burning and strong agitaion of slag burner of diving, control the atmosphere and metallurgical chemistry reaction process in molten bath, material is heated in fuming furnace, fusing, vulcanization, oxidation, reduction, fuming process, valuable metal is set to take melt composition flue dust out of with flue gas, into waste heat recycling and dust collecting system, waste heat boiler recovery waste heat, the enrichment and recycling of a variety of valuable metals in material are realized by gathering dust.The present invention improves production efficiency and improves production environment, and reduces labor intensity, economic benefit highly significant.
Description
Technical field
The invention belongs to smelting field of nonferrous metal, are related to a kind of continuous fuming production technology.
Background technique
Blast furnace fuming method handles the material of a variety of valuable metals of leaded, zinc, tin, antimony, indium, germanium etc., is in fuming furnace
In high temperature generated by the burning of fuel, material of the fusing containing valuable metal makes to have under different oxidisability or reducing atmosphere
Valence metal is escaped from material with different shapes such as steam, oxide or sulfide, is finally received in the form of flue dust in dust collecting system
Collection, to realize the production technology of enrichment and the recycling of valuable metal.Blast furnace fuming method is the technique of a comparative maturity, warp
Benefit of helping and environmental benefit clearly, industrially have been widely used.Traditional fuming furnace is cyclical intermission operation,
Charging-heating is melted-blows fuming-deslagging as a cycle, causes the production cycle long in this way, and labor intensity of workers is big, blowing
The judgement of terminal difficulty, metal recovery rate is not very high, and the waste heat boiler stable operation that has an impact, burner and converter life are short etc.
A series of problems promotes people to make bigger innovation to fuming process, to achieve the purpose that improve efficiency and enhance apparatus adaptability.
How to become fuming operation to work continuously and obtain benefit economically from discontinuous operation, is a very attractive class
Topic.
Continuous fuming refers to that the hot material of melting or solid-state cold material are added continuously in fuming furnace, the stable work in furnace
Blowing fuming is carried out under the conditions of condition, the melting waste residues after fuming dilution are flowed continually out from furnace, and dust collecting system recycles valuable gold
Belong to a kind of fuming technique of flue dust.Since generation nineteen sixty, the countries such as Russia, Bulgaria, Germany, Canada, China
Yunnan is speeded macro zinc germanium, Jiangxi Copper (CN201420172572.3), Kunming metallurgy institute (CN92101870.3), the coloured institute in Changsha
(CN201410017026.7), Chinese grace luxuriant and rich with fragrance (CN201420191744.1) etc. just passes through water in relation to research institution and smelting enterprise
Sharp model, half industrial experiment carry out continuous fuming research to the production slag of lead, zinc, tin, constantly explore, achieve company abundant
Continuous fuming research achievement, in order to which energy conservation additionally uses oxygen-enriched air converting mode (CN201120306030.7).But these continuous fumings
Technique mostly uses greatly the fuming furnace of tunnel structure, due to energy consumption is high, the problems such as at high cost cause it is technically and economical
On be not succeeded also.
Main problem existing for current above-mentioned continuous fuming technique is embodied in: 1) in feelings identical with batch operation productivity
Under condition, abandons slag metal-containing and the level usually required that is much not achieved；2) stable operating effect cannot be kept in material composition change；
3) partition wall need to be arranged in melt cinder reflux in order to prevent, and in the case where guaranteeing same product throughput rate, fuming furnace tuyere area basal area needs to expand
Big 3-4 times for arriving batch operation fuming furnace, increases the expense of construction and maintenance；4) from the perspective of practical operation, work as place
When reason amount is not sufficiently large, continuous feed and the slag flow of unit time when discharging are too small, and chute inconvenience correlates.Due to these shapes
The continuous fuming technique of formula fails to show enough superiority, therefore remains in the stage of pilot-plant test at present.
Summary of the invention
The object of the present invention is to provide a kind of continuous fuming techniques of modularization, are gone here and there, simultaneously by one or several function molten baths
The combination of connection realizes that being continuously added to containing valuable metal materials, continuous warming, continuous fuming and the fuming that is continuously discharged are raw
Production. art.
To achieve the goals above, the present invention the following technical schemes are provided:
The present invention provides a kind of continuous fuming production technology of modularization, comprising:
Continuous fuming furnace is combined by one or more function molten bath, for the technique of fuming production, function molten bath structure
Approximation, slag line depth are more than 1.0 meters of molten bath, dive slag burner along function molten bath side wall surrounding arrange, and spout slag line with
Under；
Molten state or cold conditions contain valuable metal metallurgy smelting materials and are introduced directly into function molten bath, or are added again after being pretreated
Enter function molten bath, by the burning and strong agitaion of slag burner of diving, the atmosphere and metallurgical chemistry controlled in molten bath was reacted
Journey, material is heated in fuming furnace, melts, vulcanizing, aoxidizing, restoring, fuming process, and valuable metal is made to take melt out of with flue gas
Flue dust is formed, into waste heat recycling and dust collecting system；
Waste heat boiler recovery waste heat is realized the enrichment and recycling of a variety of valuable metals in material by gathering dust, is realized with this
The production technology of the continuous fuming of metallurgical material.
In a specific embodiment, the latent slag burner using gas fuel, coal dust or coke powder as fuel and are gone back
Former agent, air or oxygen-enriched air are as combustion adjuvant and oxidant.By the burning and strong agitaion of burner, realize to material
The processes such as heating, fusing, vulcanization, reduction, fuming.
In a specific embodiment, the function molten bath is to realize heating, fusing, vulcanization, oxidation, reduction, fuming
The molten bath of various functions, using round, ellipse, the cross section structure of polygon and fillet polygon, slag line depth is more than 1 in molten bath
Rice；One function molten bath, which can be used alone, completes a certain function, can also be completed at the same time certain several function, more function molten baths can
It is applied in combination by series and parallel mode, realizes the continuous fuming production technology of a variety of valuable metals in material.
In a specific embodiment, the combination between the function molten bath is to connect to realize by chute, melt
Next function molten bath is flowed into from a function molten bath along chute.
In a specific embodiment, the continuous fuming technique can be used in combination with pretreatment process.
In a specific embodiment, metallurgical material adds function molten bath after heating supernatant separation in electric furnace.
In a specific embodiment, cold conditions granular material adds function molten bath after granulation.
In a specific embodiment, the continuous fuming technique can combine with flue gas and waste postprocessing working procedures and make
With.
In a specific embodiment, flue gas recovery waste heat in waste heat boiler, recycles flue dust in dust collecting system,
Flue gas desulfurization is completed in desulphurization system；Slag granulation is completed in flushing cinder system.
Compared with existing fuming technique, the present invention can get satisfactory while realizing continuous fuming production
Metal recovery rate has the unrivaled technology of conventional fuming furnace and economic advantages:
A, metallurgical reaction intensity improves, and production efficiency improves.When not feeding and discharge the waiting time, and feeding and discharge
Between conventional discontinuous fuming furnace operation in accounted for 10~30% or so of a production operation period, and bad environments,
Large labor intensity；While the technique realizes fuming production serialization, production efficiency is greatly improved, improves production ring
Border, and reduce labor intensity.
B, fuel tolerance is strong.Cheap coal gas, blast furnace gas, coal gas of converter, coke-stove gas, natural gas, coal can be used
Powder, coke powder etc. pluralities of fuel；Coal gas and air burning are swift in response, more faster than the burning of coal dust, can make clinker and cold burden
Be rapidly heated, drastically reduce heating and fusing time, and the thermal efficiency is high, substantially increase fuming furnace controllability and
Economy.
C, metallurgical raw material is adaptable.Difficulty or ease are reacted in the fuming of dissimilar metals and different metal compound form
Degree is different, and the atmosphere that metallurgical reaction requires is also different, and metallurgical raw material source is different, and the physicochemical character of metallurgical raw material is different, but
It is that most suitable process can pointedly be selected by the reasonable combination in function molten bath, realizes that efficiently and economically fuming produces.
D, circle, the depth molten bath dross easy to accomplish of ellipse, polygon and fillet polygon cross-section structure, substantially
Degree extends furnace body service life；Strong agitation and the no dead zone type of flow of melt, extend the slag residence time, make valuable
Metal fuming process is more thorough.
E, while combustion product gases bubble rises agitation, metal evaporation rate in melt has also been increased considerably, depth is molten
Pond is also simultaneously heat molten bath and atmosphere molten bath, maintains a good reaction temperature and atmospheric condition, is accelerated metallurgical anti-
Answer process.
F, since bath temperature is higher, 1150~1350 DEG C are maintained, slag good fluidity, heat and mass rate is high, favorably
It is operated in strengthening fuming.
G, function molten bath structure is almost the same, is conducive to standardization and standardized production processing, and stove quality is guaranteed.
Detailed description of the invention
One schematic diagram of Fig. 1 assembled scheme:
Wherein: 1- electric furnace, 2- heating molten bath, 3- fusing molten bath, 4- chute, 5- reduction fuming molten bath, 6- slag, 7- are cold
Slag, 8- waste.
Two schematic diagram of Fig. 2 assembled scheme:
Wherein: 1- heating and oxidation molten bath, 2- chute, 3- restore fuming molten bath, 4- molten slag, 5- waste.
Three schematic diagram of Fig. 3 assembled scheme:
Wherein: 1- elevated temperature cure fuming molten bath, 2- slag, 3- waste.
The difunctional molten bath cascaded structure embodiment schematic diagram of Fig. 4:
Wherein: 1- heats up melting tank, and 2- restores fuming pond, and 3- dives slag burner, 4- chute, and 5- uptake flue removes waste heat boiler
With gather dust, 6- feed inlet, 7- slag-drip opening, 8- slag line.
Specific embodiment
Invention is further explained combined with specific embodiments below:
Due to the difference of separate sources combustion, the difference of the valuable constituent physicochemical property contained, different metal chemical combination
The difference that object requires fuming technique, the continuous fuming technique of the present invention combine in one or more of function molten baths by series and parallel
Complete continuous fuming production；Specific assembled scheme will realize continuous fuming production, complete metallurgy depending on technique actual conditions
The fuming, enrichment of valuable metal and the metallurgical technology of recycling in material, the final optimal objective for realizing economic and technical norms.Below
It is the combination explanation proposed according to the specific field condition of different enterprises, but is not limited only to following several assembled schemes.
The continuous fuming production technology recycling metallic lead of assembled scheme one, certain enterprise application modulesization and zinc, processing material are
Molten slag containing metallic state lead and oxidation state zinc further needs exist for addition and handles a large amount of granular residues containing zincs of cold conditions, continuous
Fuming production technology is as shown in Figure 1.
Slag is flowed into electric furnace 1 and is pre-processed, and supernatant is located away from furnace bottom and is returned the lead of metallic state under the effect of gravity
It receives, slag of the top containing zinc oxide continuously flows into heating molten bath 2 by chute 4, and it is molten that fusing is added in a large amount of granular residues containing zincs of cold conditions
Pond 3, the slag after melting continuously flow into heating molten bath 2 by chute 4, and two parts slag mixes in heating molten bath 2, and slag temperature
1150~1350 DEG C are risen to, the slag after heating flows into reduction fuming molten bath 5 by chute 4, and reduction fuming molten bath 5 is strong also
Originality atmosphere, zinc oxide reduction be zinc fume with flue gas escape molten bath, in molten bath upper oxide be zinc oxide fumes with flue gas into
Enter uptake flue, collected by dust collecting system and complete fuming, fuming furnace is continuously discharged from slag-drip opening in the waste 8 after dilution.
The continuous fuming production technology of assembled scheme two, certain enterprise application modulesization recycles metallic zinc, and processing material is containing zinc
Molten slag, a large amount of element sulphurs, zinc sulphide more difficult fuming in traditional fuming furnace, continuous fuming production technology are contained in slag
As shown in Figure 2.
Molten slag 4 flows into heating and oxidation molten bath 1, is strong oxidizing atmosphere in molten bath, sulphur rapid oxidation at sulfur dioxide into
Enter flue gas, zinc sulphide is oxidized to zinc oxide, and slag temperature rises to 1150~1350 DEG C, and the slag after heating passes through chute 2
Reduction fuming molten bath 3 is flowed into, is strong reducing property atmosphere, zinc oxide reduction is zinc fume with flue gas evolution molten bath, on molten bath
Portion is oxidized to zinc oxide fumes and enters uptake flue with flue gas, is collected by dust collecting system and completes fuming, and waste 5 after dilution is from row
Fuming furnace is continuously discharged in cinder notch.
The continuous fuming production technology of assembled scheme three, certain enterprise application modulesization recycles metallic tin, and material is that reverberatory furnace is rich
Scruff, tin exists with oxidation states in slag, and continuous fuming production technology is as shown in Figure 3.
Elevated temperature cure fuming molten bath 1 is added in clinker 2, and slag temperature rises to 1150~1350 DEG C, and tin oxide encounters vulcanization
Agent generates artificial gold, and artificial gold steam escapes molten bath with flue gas, and in molten bath, upper oxide enters cigarette with flue gas for tin oxide flue dust
Road, is collected by dust collecting system and completes fuming, and fuming furnace is continuously discharged from slag-drip opening in the waste 3 after dilution.
Following example is that the clinker of certain typical imperial smelting furnace is handled using the continuous fuming production technology of modularization,
Lead zinc is recycled, due to needing a large amount of processing cold burdens, using the fuming furnace mode of difunctional molten bath cascaded structure, as shown in figure 4, packet
Heating melting tank 1, reduction fuming pond 2 are included, the section of molten bath structure is circle, and pool depth is greater than 1.0m, and slag burner 3 of diving is along molten
The side wall surrounding circle of contact arrangement of pond lower part, heating melting tank 1 are connect with reduction fuming pond 2 by chute 4, and heating melting tank 1 is gone back
The top in former fuming pond 2 is equipped with dust collecting system 5, and the top of heating melting tank 1 is equipped with feed inlet 6, and the side wall in reduction fuming pond 2 is set
There is slag-drip opening 7, the temperature of control heating melting tank 1 is 1250~1300 DEG C, for heating up and melting clinker, makes part metals
Reduction and fuming；Restore fuming pond 2 be used to restore the rapid dilution of the clinker of high-temperature fusion the temperature in fuming pond 2 be 1250~
1300 DEG C, realize the fuming process of valuable metal.
Concrete technology relevant parameter are as follows:
(a) fuming technique need to handle 100,000 tons/year of electrothermal front bed clinker of melting, separately handle cold burden, including history accumulation
100,000 tons/year of untreated electrothermal front bed clinker, flue dust, secondary material etc., slag composition are as follows:
| Fe | Pb | Zn | CaO | SiO2 | Al2O3 |
| 27.18 | 0.60 | 9.96 | 18.35 | 18.75 | 5.46 |
Continuous fuming technique uses the fuming furnace mode of difunctional molten bath cascaded structure, and one is heating melting tank, mainly
Function is that clinker heating and fusing are reached 1250~1300 DEG C, also carries out the reduction of part lead zinc and fuming in molten bath simultaneously
Journey, to improve heating and burn-off rate, Air compress pump is controlled 0.7~1.0；The other is reduction fuming pond, main function
It can be that the rapid dilution of the clinker of high-temperature fusion is realized that the fuming process of valuable metal, bath temperature are stablized, to improve metal also
Former fuming speed, Air compress pump are controlled 0.5~0.7；
(b) by the secondary material of the leaded zinc of cold conditions or granulation clinker, molten bath is added from the feed inlet at the top of heating melting tank
Middle section, for material since temperature is lower, density is big, gradually sinks to molten bath lower part, side of multiple latent slag burners along molten bath lower part
Wall surrounding circle of contact arrangement, producer gas, coal dust and compressed air spray into molten bath with burner high speed, and coal gas mixes rapidly with air
Burning discharges heat slag, and part coal dust also burns in the process, and remaining coal dust enters in melt, melt temperature
It increases rapidly, is touching imperfect combustion CO, H2, the reproducibilities ingredient such as C, reduction reaction occurs for part ZnO and PbO, raw
Melt is taken out of with bubble at Zn and Pb metal vapors, and in molten bath, upper space encounters oxygen burning, generates ZnO and PbO flue dust and is received
Dirt system is collected, while high-speed flow drives melt circumferentially to flow, since the buoyancy effect of increasing of bubble also drives melt
Spiral；
(c) clinker and cold burden being added be during decline is with rising in the melting tank that heats up, quickly become 1250~
1300 DEG C of melt, in order to complete more quickly reduction fuming process, melt by chute flow into restore fuming pond, here due to
Air compress pump is smaller, has stronger reducing atmosphere, and reduction reaction occurs more quickly for ZnO and PbO, generates Zn and Pb
Metal vapors takes melt out of with bubble, and in molten bath, upper space encounters oxygen burning, becomes ZnO and PbO flue dust and is received by dust collecting system
Collection；
(d) clinker after fuming technique dilution flows continually out reduction fuming pond, waste ingredient from slag-drip opening are as follows:
| Fe | Pb | Zn | CaO | SiO2 | Al2O3 |
| 29.23 | 0.05 | 0.91 | 19.17 | 18.54 | 5.86 |
The finally obtained Pb rate of recovery of the present embodiment is that 92%, Zn metal recovery rate is 91%, recycles metallic lead every year
1100 tons, 18000 tons of metallic zinc, economic benefit highly significant.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (9)
1. a kind of continuous fuming production technology of modularization characterized by comprising
Continuous fuming furnace is combined by one or more function molten bath, is used for continuous fuming production technology, function molten bath structure is close
Seemingly, slag line depth is more than 1.0 meters, and slag burner of diving is arranged along function molten bath side wall surrounding, and spout is below slag line；
Molten state or cold conditions contain valuable metal metallurgy smelting materials and are introduced directly into function molten bath, or are added into function again after being pretreated
Energy molten bath controls the atmosphere and metallurgical chemistry reaction process in molten bath, object by the burning and strong agitaion of slag burner of diving
Material be heated, melt in fuming furnace, vulcanizing, aoxidizing, restoring, fuming process, so that valuable metal is taken melt composition out of with flue gas
Flue dust, into waste heat recycling and dust collecting system；
Waste heat boiler recovery waste heat realizes the enrichment and recycling of a variety of valuable metals in material by gathering dust, realizes metallurgy with this
The production technology of the continuous fuming of material.
2. the continuous fuming production technology of a kind of modularization according to claim 1, which is characterized in that the latent slag burner makes
Use gaseous fuel, coal dust or coke powder as fuel and reducing agent, air or oxygen-enriched air are as combustion adjuvant and oxidant.
3. the continuous fuming production technology of a kind of modularization according to claim 1, which is characterized in that the function molten bath is
Realize heating, fusing, vulcanization, oxidation, reduction, the various functions of fuming molten bath, molten bath using round, ellipse, polygon and
The cross section structure of fillet polygon, slag line depth are more than 1 meter；One function molten bath, which can be used alone, completes a certain function,
It can be completed at the same time certain several function, more function molten baths can be applied in combination by series and parallel mode, be realized a variety of valuable in material
The continuous fuming production technology of metal.
4. the continuous fuming production technology of a kind of modularization according to claim 1, which is characterized in that the function molten bath it
Between combination be to connect to realize by chute, melt flows into next function molten bath along chute from a function molten bath.
5. the continuous fuming production technology of a kind of modularization according to claim 1, which is characterized in that the continuous fuming work
Skill can be used in combination with pretreatment process.
6. the continuous fuming production technology of a kind of modularization according to claim 5, which is characterized in that metallurgical material is in electric furnace
Function molten bath is added after interior heating supernatant separation.
7. the continuous fuming production technology of a kind of modularization according to claim 5, which is characterized in that cold conditions granular material warp
Function molten bath is added after crossing granulation.
8. the continuous fuming production technology of a kind of modularization according to claim 1, which is characterized in that the continuous fuming work
Skill can be used in combination with flue gas and waste postprocessing working procedures.
9. the continuous fuming production technology of a kind of modularization according to claim 8, which is characterized in that flue gas is in waste heat boiler
Middle recovery waste heat, recycles flue dust in dust collecting system, and flue gas desulfurization is completed in desulphurization system；Slag system is completed in flushing cinder system
Grain.
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| CN111910087A (en) * | 2020-09-07 | 2020-11-10 | 云南锡业股份有限公司锡业分公司 | Smelting furnace and smelting method for continuously fuming low-grade tin material |
| CN112797806A (en) * | 2020-12-31 | 2021-05-14 | 耒阳市焱鑫有色金属有限公司 | Method for regionally regulating and controlling flame characteristics of continuous fuming furnace |
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