CN108950236A - A kind of technique of clean and effective processing lead containing sludge - Google Patents
A kind of technique of clean and effective processing lead containing sludge Download PDFInfo
- Publication number
- CN108950236A CN108950236A CN201810875985.0A CN201810875985A CN108950236A CN 108950236 A CN108950236 A CN 108950236A CN 201810875985 A CN201810875985 A CN 201810875985A CN 108950236 A CN108950236 A CN 108950236A
- Authority
- CN
- China
- Prior art keywords
- section
- lead
- furnace
- temperature
- slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000010802 sludge Substances 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 69
- 229910052751 metal Inorganic materials 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 41
- 238000002844 melting Methods 0.000 claims abstract description 34
- 230000008018 melting Effects 0.000 claims abstract description 34
- 238000003723 Smelting Methods 0.000 claims abstract description 32
- 238000005245 sintering Methods 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004615 ingredient Substances 0.000 claims abstract description 12
- 239000000571 coke Substances 0.000 claims abstract description 11
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 6
- 239000004571 lime Substances 0.000 claims abstract description 6
- 239000002893 slag Substances 0.000 claims description 45
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 26
- 229910052725 zinc Inorganic materials 0.000 claims description 26
- 239000011701 zinc Substances 0.000 claims description 26
- 239000000295 fuel oil Substances 0.000 claims description 19
- 229910052738 indium Inorganic materials 0.000 claims description 15
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 15
- 238000009423 ventilation Methods 0.000 claims description 14
- 229910052785 arsenic Inorganic materials 0.000 claims description 11
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 11
- 239000003500 flue dust Substances 0.000 claims description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 241001417490 Sillaginidae Species 0.000 claims description 8
- 238000006477 desulfuration reaction Methods 0.000 claims description 8
- 230000023556 desulfurization Effects 0.000 claims description 8
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- 241001062472 Stokellia anisodon Species 0.000 claims description 7
- 238000006722 reduction reaction Methods 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 239000003610 charcoal Substances 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 5
- 230000003009 desulfurizing effect Effects 0.000 claims description 5
- 229910052602 gypsum Inorganic materials 0.000 claims description 5
- 239000010440 gypsum Substances 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- 238000006479 redox reaction Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 claims description 4
- 241000790917 Dioxys <bee> Species 0.000 claims description 3
- 229910003978 SiClx Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000005352 clarification Methods 0.000 abstract description 3
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 239000004568 cement Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000004064 recycling Methods 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 238000002386 leaching Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- RBORURQQJIQWBS-QVRNUERCSA-N (4ar,6r,7r,7as)-6-(6-amino-8-bromopurin-9-yl)-2-hydroxy-2-sulfanylidene-4a,6,7,7a-tetrahydro-4h-furo[3,2-d][1,3,2]dioxaphosphinin-7-ol Chemical compound C([C@H]1O2)OP(O)(=S)O[C@H]1[C@@H](O)[C@@H]2N1C(N=CN=C2N)=C2N=C1Br RBORURQQJIQWBS-QVRNUERCSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- -1 and in this section Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002351 wastewater Substances 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
- 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
- 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
- C22B7/04—Working-up slag
-
- 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
A kind of technique of clean and effective processing lead containing sludge, it is that lead is smelted to the lead containing sludge generated and is pressed into block-like leaded clinker after lime 1:0.03 in mass ratio~0.07 proportion, 7~15% coke, 9~11% silica, 74~84% leaded clinker carry out ingredient by mass percentage after natural drying；Ingredient is sequentially added in five sections of integral type smelting furnaces, blow-on of lighting a fire carries out oxygen-enriched intensified smelting, the material being added from smelting furnace feeding section (1) completes the smelting process of material by preheating section (2), sintering stage (3), semi-molten section (4), melting section (5) and layering section (6).The present invention realizes material preheating, sintering, melting and clarification layering integration, heavy metal, valuable metal and gangue etc. preferably realize Selective Separation, it realizes cleaning, efficiently handle danger wastes, and there are the advantages such as short, the easy to operate, small investment of process.
Description
Technical field
Invention is related to metallurgical technology field, and in particular to lead smelts the treatment process of the lead containing sludge generated.
Background technique
Lead containing sludge is that lead smelts the waste residue generated, is mainly derived from blast furnace slag, rotary kiln clinker, reflection clinker, cigarette
Change clinker etc..Its main valuable metal is lead, partially containing silver, zinc etc., simultaneously containing heavy metals such as part arsenic.Such waste residue
With double grading, on the one hand will affect to environment containing heavy metals such as lead if not disposed effectively；Separately
On the one hand, valuable metal content is lower, and development and utilization are difficult.
The method for recycling valuable element from lead skim at present mainly has as cement cooperative disposal method, direct-reduction process, leaching
Method, electrolysis method, floatation etc. out, respectively have the following characteristics that
(1) it is used as cement cooperative disposal method: because lead containing sludge passes through high temperature sintering, can be used as cement primary raw materials, at a low price
It is sold to cement plant, the cooperative disposal in cement.The technique can preferably realize the recycling and minimizing of waste, but wherein
Valuable metal cannot recycle, and resources loss is serious.
(2) it direct-reduction process: mainly takes as sintering-shaft smelting mode, it is poor that presently, there are metallurgical effects, directly
The problems such as yield is low, fuel combustion is not enough, at high cost, generally only as insufficient raw material when a kind of standby raw material use,
Directly furnace is not entered using the material.
(3) lixiviation process: Hot-acid Leaching Residues in Hydrochloric Acid System is generally used, lead and yellow-collation technique is prepared.The technique mainly deposits chloride ion corrosion
The problems such as equipment is serious, and waste water treatment is difficult.
(4) electrolysis method and floatation: need to be subject to slow cooling and stringent process control condition in lead skim cooling procedure, waste residue with
Sulfided state or metallic state output, operating condition require stringent.
Summary of the invention
The purpose of the present invention is low mainly for resource recovery existing for existing processing technique, adaptability to raw material is poor, equipment
The problems such as corrosion and difficult raw material preparation, provides a kind of technique of clean and effective processing lead containing sludge.
The purpose of the present invention is achieved through the following technical solutions:
A kind of technique of clean and effective processing lead containing sludge, is completed according to the following steps:
(1) lead is smelted into the lead containing sludge generated and lime 1:0.03 in mass ratio~0.07 is matched, 1200~1300
It DEG C is pressed into block-like leaded clinker, is spontaneously dried 3~5 days；Then 7~15% coke, 9~11% by mass percentage
Silica, 74~84% leaded clinker carry out ingredient；
(2) ingredient is sequentially added in smelting furnace, charging sequence be first plus coke, then plus leaded clinker, finally plus dioxy
SiClx；The smelting furnace be five sections of integral type smelting furnaces, including set gradually from top to bottom feeding section, preheating section, sintering stage,
Semi-molten section, melting section, layering section, what is be set to melting pars infrasegmentalis and be passed through the intracorporal ventilation opening of furnace, connect with ventilation opening is logical
Oxygen pipe, the heavy oil rifle for protruding into ventilation opening；It is provided with cooling jacket from preheating section to the periphery of melting section in furnace body, furnace roof is provided with
Flue is provided with slag notch in melting section, and layering section is provided with slag outlet and lead bullion outlet；In the bottom discharge of feeding section
Mouth is provided with charging baffle；It is being equipped with seal closure from the loading hopper discharge port lower end of feeding section to slag outlet periphery, is being sealed
Cover, which is circumscribed with, leads to flue and to the air hose of flue exhausting, carries out negative-pressure operation；
(3) igniting blow-on carries out oxygen-enriched intensified smelting, and the material being added from feeding section feed opening is by preheating section, sintering
Section, semi-molten section, melting section and layering section, complete the smelting process of material；Wherein industrial oxygen passes through oxygen-supplying tube and air blast
The air mixing of machine conveying, oxygen concentration reach 25-30%, observe in-furnace temperature situation, and when temperature is lower, material burns color
When for kermesinus, heavy oil is passed through by heavy oil rifle, quickly improves temperature, ensures in-furnace temperature and atmosphere；Furnace charge adds in preheating section
To 250~700 DEG C of temperature, the sulfide in mineral starts to aoxidize heat, and zinc, arsenic, indium start to volatilize in this section, into flue dust；With
Reaction carry out, material enters sintering stage, and temperature of charge reaches 700~1000 DEG C, the volatilization of volatile component part, lower part material
Close to material softening point, the sintering of material is realized in this section；With the decline of material, temperature of charge is stepped up, in semi-molten
Section temperature of charge reaches 1000~1200 DEG C, and material reaches softening point, forms semi-molten state；Melting section temperature of charge is reached to reach
To 1200~1300 DEG C, material melting, and with reducing agent charcoal, heavy oil and carbon monoxide under high temperature action, reduction reaction is completed,
Violent redox reaction occurs for the valuable metal in material, and most of metal reducing metal form is fallen into after the reaction was completed
It is layered section, temperature of charge is 1150~1250 DEG C, and in this section, metal and slag are layered, and is formed and smelts slag blanket and lead bullion；Flue gas is logical
It crosses furnace roof and is delivered to desulfurizing tower through flue 11, be lower than 300mg/L through desulfurization process to sulfur dioxide concentration, reach lead and smelt discharge
Standard, desulfurization slag form gypsum tailings after being fired；Valuable metal arsenic, zinc, indium are enriched in flue dust by volatilization, conduct after collection
Zinc abstraction process of zinc concentrate selling or enter recycles valuable metal zinc, indium, and valuable metal lead, silver are enriched in lead bullion, enter
It is layered section, exports and is discharged through lead bullion；Silicon, the calcium output in the form of metallurgical slag, from the slag outlet discharge of layering section.
Lead of the present invention is smelted the difficult blast furnace slag that the lead containing sludge generated is the generation of lead smelt production, is returned
Rotary kiln clinker, reflection clinker, fuming slag.The ventilation opening is visual air port.The charging baffle is by the horizontal feeding section of being inserted in
Upper layer and lower layer plate composition.Preheating section, sintering stage, semi-molten section, melting section and the layering of five sections of integral type smelting furnaces
The inner wall of section is equipped with silicon carbide brick, encloses slag outlet outside, lead bullion outlet inside wall is equipped with silicon carbide brick.
The present invention has the advantages such as recovery rate of valuable metals height, economic benefit height compared with conventional cement collaboration is handled.With
It handles traditional blast furnace processing technique to compare, the processes such as material sintering, the clarification of back segment external crucible heating and thermal insulation can be reduced, there is investment
The advantages such as low, land occupation is less, treatment effeciency is high, each section atmosphere is controllable, low energy consumption, direct yield is high and back segment fume treatment is simple.
With wet-leaching compared with technique of preparing, have do not generate waste water, raw material preparation requires the advantages such as simple.
The present invention uses oxygen-enriched intensified smelting technique, and the heat for further promoting smelting furnace generates and transmittance process, strengthens not
With the redox condition in stage, sulfur dioxide in flue gas concentration, efficiency of combustion and the redox for strengthening material are improved
Journey improves treatment effeciency.Especially into heavy oil combustion, in-furnace temperature is quickly improved, so that temperature is more easily controlled with atmosphere.
The present invention realizes material preheating, sintering, melting and clarification layering integration, weight using five sections of integrated novel smelting furnaces
Metal, valuable metal and gangue etc. preferably realize Selective Separation, realize cleaning, efficiently handle danger wastes,
Achieve the purpose that recycling, innoxious, comprehensive utilization, meets the related environmental requirement of country, and, operation letter short with process
Just, the advantages such as small investment, at low cost.Fusion process of the present invention uses negative-pressure operation, it is therefore prevented that the uncontrollable discharge of gas, protection
Environment, and ensure worker's occupational health.The direct step of the present invention smelts to obtain lead bullion, solves the existing effect of conventional treatment process
The problems such as rate is low, energy consumption is high, environmental pollution is big.
Detailed description of the invention
Fig. 1 is the schematic diagram that present invention process uses five sections of integrated melting furnaces.
Specific embodiment
Embodiment 1
A kind of technique of clean and effective processing lead containing sludge, is completed according to the following steps:
(1) lead is smelted to lead containing sludge (difficult blast furnace slag, the kiln of lead smelt production generation generated
Slag, reflection clinker, fuming slag etc.) it is matched with lime 1:0.05 in mass ratio, block-like contain is pressed at 1200~1300 DEG C
Lead skim block, usually brick-shaped, spontaneously dries 3~5 days；Lead containing sludge main component are as follows: Pb10-30%, silver-colored 100-130g/t,
SO215-25%, Fe15-35%, CaO6-15%；
10% coke, 10% silica, 80% leaded clinker carry out ingredient by mass percentage；
(2) ingredient is sequentially added in smelting furnace, charging sequence be first plus coke, then plus leaded clinker, finally plus dioxy
SiClx；
The smelting furnace is five sections of integral type smelting furnaces as shown in Figure 1, including the feeding section set gradually from top to bottom
1, preheating section 2, sintering stage 3, semi-molten section 4, melting section 5, layering section 6, are set to melting pars infrasegmentalis and to be passed through furnace intracorporal logical
Air port 7, the oxygen-supplying tube 8 to connect with ventilation opening, the heavy oil rifle 9 for protruding into ventilation opening；It is outer from preheating section 2 to melting section 5 in furnace body
It encloses and is provided with cooling jacket 10, furnace roof is provided with flue 11, and melting section 5 is provided with slag notch 12, and layering section 6 is provided with furnace
Slag outlet 13 and lead bullion outlet 14.The loading hopper bottom discharge port of feeding section is provided with charging baffle 15, to guarantee charging system
The closed-loop operation of system, avoids gas from leaking.The charging baffle is made of the horizontal upper layer and lower layer plate for being inserted in feeding section, charging
When, operating personnel first can pull open the upper layer plate for the baffle that feeds on operating platform 18, lower layer's plate is inserted into, then from adding
Material mouth charging, material accumulation are inserted into the bottom discharge port that upper layer plate blocks feeding section later, pull open on lower layer's plate
Lower layer's plate, material enter in furnace under air-tight state.It is added from feeding section discharge port lower end to 13 periphery of slag outlet
There is a seal closure 16, seal closure, which is circumscribed with, leads to flue and to the air hose of flue exhausting 17, and exhaust fan is arranged on air hose.Melting
When, start exhaust fan, form negative pressure in seal closure, carries out negative-pressure operation.The ventilation opening 7 is visual air port, can be passed through
Situation in the visual air port observation furnace.Preheating section, sintering stage, semi-molten section, melting section and the inner wall for being layered section of smelting furnace
It is equipped with silicon carbide brick, encloses slag outlet outside, lead bullion outlet inside wall is also equipped with silicon carbide brick；
(3) igniting blow-on carries out oxygen-enriched intensified smelting, and the material being added from feeding section feed opening passes through preheating section in furnace
2, sintering stage 3, semi-molten section 4, melting section 5 and layering section 6, complete the smelting process of material；Wherein industrial oxygen passes through logical
Oxygen pipe 8 is mixed with the air that air blower conveys, and oxygen concentration reaches 25-30%, into furnace in power-assisted burning.Pass through ventilation opening 7
In-furnace temperature situation is observed, when temperature is lower, and material burning color is kermesinus, the combustion of heavy oil power-assisted is passed through by heavy oil rifle 9
It burns, quickly improves temperature, ensure in-furnace temperature and atmosphere；Furnace charge is heated to 250~700 DEG C of temperature, in mineral in preheating section 2
Sulfide starts to aoxidize, and zinc, arsenic, indium start to volatilize in this section, into flue dust；As reaction carries out, material enters sintering stage 3,
Temperature of charge reaches 700~1000 DEG C, and volatile component part volatilization, lower part material is realized close to material softening point in this section
The sintering of material；With the decline of material, temperature of charge is stepped up, and reaches 1000~1200 in 4 temperature of charge of semi-molten section
DEG C, material reaches softening point, forms semi-molten state；It reaches 5 temperature of charge of melting section and reaches 1200~1300 DEG C, material is molten
Change, and with reducing agent charcoal, heavy oil and carbon monoxide under high temperature action, complete reduction reaction, the valuable metal in material occurs
Violent redox reaction, most of metal reducing metal form are fallen into layering section 6 i.e. cupola well, material after the reaction was completed
Temperature is 1150~1250 DEG C, in this section, stands a few minutes, and metal and slag are layered, and is formed and smelts slag blanket and lead bullion；Flue gas is logical
It crosses furnace roof and is delivered to desulfurizing tower through flue 11, be lower than 300mg/L through desulfurization process to sulfur dioxide concentration, reach lead and smelt discharge
Standard, desulfurization slag form gypsum tailings after being fired and sell；Valuable metal arsenic, zinc, indium are enriched in flue dust by volatilization, after collection
It is sold as zinc concentrate, or enters the valuable metals such as zinc abstraction process recycling zinc, indium, valuable metal lead, silver are enriched in lead bullion,
Into layering section 6, through 14 discharge of lead bullion outlet；Silicon, the calcium output in the form of metallurgical slag are discharged from the slag outlet 13 of layering section 6.
Lead content is 92-95% in lead bullion, and vertical yield is 85-95%；Silver content is 600-1000g/t.Lead content is in clinker
0.8-1.6%, silver content are less than 10g/t, are general solid waste, can be used as cement raw material and sell or enter cinder field heap
It deposits.Flue dust production capacity output is generally 3-6%, main component are as follows: Zn30-47%；As0.3-0.5%；Pb3-15%.Fusion process
In, recirculated cooling water is injected in cooling jacket 10.
Embodiment 2
A kind of technique of clean and effective processing lead containing sludge, is completed according to the following steps:
(1) lead is smelted into the rotary kiln clinker generated and lime 1:0.03 in mass ratio is matched, pressed at 1200~1300 DEG C
Block-like leaded clinker is made, spontaneously dries 3~4 days；By mass percentage 15% coke, 11% silica, 74%
Leaded clinker carry out ingredient；
(2) ingredient is sequentially added in five sections of integral type smelting furnaces as shown in Figure 1, charging sequence be first plus coke, then
Add leaded clinker, finally plus silica；
(3) igniting blow-on carries out oxygen-enriched intensified smelting, material in furnace by preheating section 2, sintering stage 3, semi-molten section 4,
Melting section 5 and layering section 6, complete the smelting process of material；Industrial oxygen by ventilation opening 7 enter furnace in it is combustion-supporting, work as observation
It is lower to in-furnace temperature feelings, when material burning color is kermesinus, heavy oil combustion is passed through by heavy oil rifle 9, is quickly improved in furnace
Temperature.Furnace charge is heated to 250~700 DEG C of temperature in preheating section 2, and the sulfide in mineral starts to aoxidize, and zinc, arsenic, indium are in this section
Start to volatilize, into flue dust；As reaction carries out, material enters sintering stage 3, and temperature of charge reaches 700~1000 DEG C, volatile
Component portion volatilization, lower part material realize the sintering of material close to material softening point, in this section；With the decline of material, material
Temperature is stepped up, and reaches 1000~1200 DEG C in 4 temperature of charge of semi-molten section, material reaches softening point, forms semi-molten shape
State；It reaches 5 temperature of charge of melting section and reaches 1200~1300 DEG C, material melting, and exist with reducing agent charcoal, heavy oil and carbon monoxide
Under high temperature action, reduction reaction is completed, violent redox reaction, most of metal reduction occur for the valuable metal in material
Metal form is fallen into layering section 6 i.e. cupola well after the reaction was completed, and temperature of charge is 1150~1250 DEG C, in this section, is stood
A few minutes, metal and slag are layered, and are formed and are smelted slag blanket and lead bullion；Flue gas is delivered to desulfurizing tower through flue 11 by furnace roof, through de-
Sulphuring treatment to sulfur dioxide concentration reaches lead and smelts discharge standard, and desulfurization slag forms gypsum tailings after being fired and sells；Valuable metal
Arsenic, zinc, indium are enriched in flue dust by volatilization, are sold after collection as zinc concentrate, or enter zinc abstraction process recycling zinc, indium etc.
Valuable metal, valuable metal lead, silver are enriched in lead bullion, into layering section 6, through 14 discharge of lead bullion outlet；Silicon, calcium are with metallurgical slag
Form output is discharged from the slag outlet 13 of layering section 6.
Embodiment 3
A kind of technique of clean and effective processing lead containing sludge, is completed according to the following steps:
(1) lead is smelted into the rotary kiln clinker generated and lime 1:0.07 in mass ratio is matched, pressed at 1200~1300 DEG C
Block-like leaded clinker is made, spontaneously dries 4~5 days；By mass percentage 7% coke, 9% silica, 84%
Leaded clinker carries out ingredient；
(2) ingredient is sequentially added in five sections of integral type smelting furnaces as shown in Figure 1, charging sequence be first plus coke, then
Add leaded clinker, finally plus silica；
(3) igniting blow-on carries out oxygen-enriched intensified smelting, material in furnace by preheating section 2, sintering stage 3, semi-molten section 4,
Melting section 5 and layering section 6, complete the smelting process of material；Industrial oxygen by ventilation opening 7 enter furnace in it is combustion-supporting, work as observation
It is lower to in-furnace temperature feelings, when material burning color is kermesinus, heavy oil combustion is passed through by heavy oil rifle 9, is quickly improved in furnace
Temperature.Furnace charge is heated to 250~700 DEG C of temperature in preheating section 2, and the sulfide in mineral starts to aoxidize, and zinc, arsenic, indium are in this section
Start to volatilize, into flue dust；As reaction carries out, material enters sintering stage 3, and temperature of charge reaches 700~1000 DEG C, volatile
Component portion volatilization, lower part material realize the sintering of material close to material softening point, in this section；With the decline of material, material
Temperature is stepped up, and reaches 1000~1200 DEG C in 4 temperature of charge of semi-molten section, material reaches softening point, forms semi-molten shape
State；It reaches 5 temperature of charge of melting section and reaches 1200~1300 DEG C, material melting, and exist with reducing agent charcoal, heavy oil and carbon monoxide
Under high temperature action, reduction reaction is completed, violent redox reaction, most of metal reduction occur for the valuable metal in material
Metal form is fallen into layering section 6 i.e. cupola well after the reaction was completed, and temperature of charge is 1150~1250 DEG C, in this section, is stood
A few minutes, metal and slag are layered, and are formed and are smelted slag blanket and lead bullion；Flue gas is delivered to desulfurizing tower through flue 11 by furnace roof, through de-
Sulphuring treatment to sulfur dioxide concentration reaches lead and smelts discharge standard, and desulfurization slag forms gypsum tailings after being fired and sells；Valuable metal
Arsenic, zinc, indium are enriched in flue dust by volatilization, are sold after collection as zinc concentrate, or enter zinc abstraction process recycling zinc, indium etc.
Valuable metal, valuable metal lead, silver are enriched in lead bullion, into layering section 6, through 14 discharge of lead bullion outlet；Silicon, calcium are with metallurgical slag
Form output is discharged from the slag outlet 13 of layering section 6.
Claims (5)
1. a kind of technique of clean and effective processing lead containing sludge, which is characterized in that complete according to the following steps:
(1) lead is smelted into the lead containing sludge generated and lime 1:0.03 in mass ratio~0.07 is matched, pressed at 1200~1300 DEG C
Block-like leaded clinker is made, spontaneously dries 3~5 days；Then by mass percentage 7~15% coke, 9~11% dioxy
SiClx, 74~84% leaded clinker carry out ingredient；
(2) ingredient is sequentially added in smelting furnace, charging sequence be first plus coke, then plus leaded clinker, finally plus silica；
The smelting furnace is five sections of integral type smelting furnaces, including feeding section (1), the preheating section (2), sintering stage set gradually from top to bottom
(3), semi-molten section (4), melting section (5), layering section (6), be set to melting pars infrasegmentalis and be passed through the intracorporal ventilation opening of furnace (7),
The oxygen-supplying tube (8) that connects with ventilation opening, the heavy oil rifle (9) for protruding into ventilation opening；In furnace body from preheating section (2) to melting section (5)
Periphery is provided with cooling jacket (10), and furnace roof is provided with flue (11), and melting section (5) is provided with slag notch (12), is being layered
Section (6) is provided with slag outlet (13) and lead bullion outlet (14)；The loading hopper bottom discharge port of feeding section is provided with charging gear
Plate (15)；Seal closure (16) are being equipped with from feeding section discharge port lower end to slag outlet (13) periphery, seal closure is circumscribed with logical
To flue and to the air hose of flue exhausting (17), negative-pressure operation is carried out；
(3) igniting blow-on carries out oxygen-enriched intensified smelting, and the material being added from feeding section feed opening passes through preheating section (2), sintering stage
(3), semi-molten section (4), melting section (5) and layering section (6), complete the smelting process of material；Wherein industrial oxygen passes through logical
Oxygen pipe (8) is mixed with the air that air blower conveys, and oxygen concentration reaches 25-30%, observes in-furnace temperature situation, when temperature compared with
It is low, when material burning color is kermesinus, heavy oil is passed through by heavy oil rifle (9), quickly improves temperature, ensures in-furnace temperature and gas
Atmosphere；Furnace charge is heated to 250~700 DEG C of temperature in preheating section (2), and the sulfide in mineral starts to aoxidize, and zinc, arsenic, indium are in this section
Start to volatilize, into flue dust；As reaction carries out, material enters sintering stage (3), and temperature of charge reaches 700~1000 DEG C, Yi Hui
Component portion volatilization is sent out, lower part material realizes the sintering of material close to material softening point, in this section；With the decline of material, object
Material temperature degree is stepped up, and reaches 1000~1200 DEG C in semi-molten section (4) temperature of charge, material reaches softening point, forms fritting
Melt state；Reach melting section (5) temperature of charge and reach 1200~1300 DEG C, material melting, and with reducing agent charcoal, heavy oil and an oxygen
Change carbon under high temperature action, complete reduction reaction, violent redox reaction, most of gold occur for the valuable metal in material
Belong to reducing metal form, after the reaction was completed, falls into layering section (6), temperature of charge is 1150~1250 DEG C, in this section, metal
It is layered with slag, is formed and smelt slag blanket and lead bullion；Flue gas is delivered to desulfurizing tower through flue (11) by furnace roof, through desulfurization process to two
Sulfur oxide concentration is lower than 300mg/L, reaches lead and smelts discharge standard, desulfurization slag forms gypsum tailings after being fired；Valuable metal arsenic,
Zinc, indium are enriched in flue dust by volatilization, after collection, are sold as zinc concentrate or are entered zinc abstraction process and recycle valuable metal
Zinc, indium, valuable metal lead, silver are enriched in lead bullion, into layering section (6), through lead bullion outlet (14) discharge；Silicon, calcium are to smelt
Slag form output, from slag outlet (13) discharge of layering section (6).
2. a kind of technique of clean and effective processing lead containing sludge according to claim 1, which is characterized in that the lead is smelted
The lead containing sludge of generation is difficult blast furnace slag, rotary kiln clinker, the reflection clinker, fuming furnace that lead smelt production generates
Slag.
3. a kind of technique of clean and effective processing lead containing sludge according to claim 1, which is characterized in that the ventilation opening
It (7) is visual air port.
4. a kind of technique of clean and effective processing lead containing sludge according to claim 1, which is characterized in that the charging gear
Plate (15) is made of the horizontal upper layer and lower layer plate for being inserted in feeding section.
5. a kind of technique of clean and effective processing lead containing sludge according to claim 1, which is characterized in that described five section one
It the preheating section of body formula smelting furnace, sintering stage, semi-molten section, melting section and is layered the inner wall of section and is equipped with silicon carbide brick, outside
Enclose slag outlet, lead bullion outlet inside wall is equipped with silicon carbide brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810875985.0A CN108950236A (en) | 2018-08-03 | 2018-08-03 | A kind of technique of clean and effective processing lead containing sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810875985.0A CN108950236A (en) | 2018-08-03 | 2018-08-03 | A kind of technique of clean and effective processing lead containing sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108950236A true CN108950236A (en) | 2018-12-07 |
Family
ID=64468137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810875985.0A Pending CN108950236A (en) | 2018-08-03 | 2018-08-03 | A kind of technique of clean and effective processing lead containing sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108950236A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022052911A1 (en) * | 2020-09-14 | 2022-03-17 | 沈阳东大山汇环境科技有限公司 | Blast furnace recovery and smelting apparatus and method for lead-containing materials |
| CN115896466A (en) * | 2023-01-05 | 2023-04-04 | 昆明理工大学 | Method for treating complex nonferrous metal secondary material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052334A (en) * | 1989-12-08 | 1991-06-19 | 田士杰 | The hot air smelting method of lead blast furnace and wind jacket in furnace thereof |
| AU2006299743A1 (en) * | 2005-10-06 | 2007-04-12 | Glencore Technology Pty Limited | Method and apparatus for lead smelting |
| CN102268557A (en) * | 2011-08-02 | 2011-12-07 | 云南锡业集团（控股）有限责任公司 | One-step oxidizing smelting, retailoring and slag fuming volatilization method for lead sulphide concentrate |
| CN102816885A (en) * | 2011-06-08 | 2012-12-12 | 冯虎林 | Iron-making, steel-making and direct fusing reduction integrated blast furnace technology |
| CN104894380A (en) * | 2015-05-18 | 2015-09-09 | 张圣南 | Airtight oxygen-rich negative pressure efficient smelting furnace directional smelting clean production process |
-
2018
- 2018-08-03 CN CN201810875985.0A patent/CN108950236A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1052334A (en) * | 1989-12-08 | 1991-06-19 | 田士杰 | The hot air smelting method of lead blast furnace and wind jacket in furnace thereof |
| AU2006299743A1 (en) * | 2005-10-06 | 2007-04-12 | Glencore Technology Pty Limited | Method and apparatus for lead smelting |
| CN102816885A (en) * | 2011-06-08 | 2012-12-12 | 冯虎林 | Iron-making, steel-making and direct fusing reduction integrated blast furnace technology |
| CN102268557A (en) * | 2011-08-02 | 2011-12-07 | 云南锡业集团（控股）有限责任公司 | One-step oxidizing smelting, retailoring and slag fuming volatilization method for lead sulphide concentrate |
| CN104894380A (en) * | 2015-05-18 | 2015-09-09 | 张圣南 | Airtight oxygen-rich negative pressure efficient smelting furnace directional smelting clean production process |
Non-Patent Citations (1)
| Title |
|---|
| 赵俊学，李小明，崔雅茹编著: "《富氧技术在冶金和煤化工中的应用》", 北京：冶金工业出版社, pages: 131 - 134 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022052911A1 (en) * | 2020-09-14 | 2022-03-17 | 沈阳东大山汇环境科技有限公司 | Blast furnace recovery and smelting apparatus and method for lead-containing materials |
| CN115896466A (en) * | 2023-01-05 | 2023-04-04 | 昆明理工大学 | Method for treating complex nonferrous metal secondary material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103421955B (en) | Zinc leaching slag treatment method | |
| CN101768670B (en) | Method for smelting lead-containing material | |
| CN101892388B (en) | Method and device for continuously treating lead anode slime | |
| CN103614562B (en) | A kind of melting furnace process Steel Plant solid waste processing method | |
| CN108676942A (en) | The materials such as a kind of iron content and/or zinc lead bronze tin cooperate with processing recovery method with molten steel slag | |
| CN106916966B (en) | A kind of the oxygen-rich oxide method of smelting and its device of antimong-containing material | |
| CN102965510B (en) | Reduction sulfur-fixing bath smelting method and device of low-sulfur lead-containing secondary material and iron-rich heavy metal solid waste | |
| CN103388081A (en) | Bath smelting method and apparatus of zinc sulfide concentrate and lead-zinc containing materials | |
| CN101705366B (en) | Direct lead smelting method for processing zinc smelting slag by matching | |
| CN101705367A (en) | Copper nickel smelting process with oxygen-enriched side-blowing bath smelting method | |
| CN103993164B (en) | The method of the many metals of the plumbous zinc of oxysulphied smeltingization separation simultaneously | |
| CN102899501B (en) | Device and method for enriching and recycling valuable metals from zinc-containing impurities through cyclone smelting | |
| CN101509081A (en) | Process for direct reduction of liquid high-lead skim with reduction furnace | |
| CN102031393A (en) | Continuous lead smelting clean production process | |
| CN101240379A (en) | Method for directly smelting lead zinc sulfide ore by hydrogen | |
| CN102965509A (en) | Method and device for treating daub and iron-rich heavy metal solid waste of waste lead-acid storage battery | |
| CN102312103A (en) | Method for direct reduction smelting of molten liquid lead-containing slag | |
| CN109423558A (en) | A kind of technique of municipal administration and metallurgical difficult solid waste collaboration resource utilization | |
| CN111156820A (en) | Antimony concentrate vacuum smelting device | |
| CN102758094A (en) | Technology and device thereof adopting bottom blowing molten bath for antimony reduction and smelting | |
| CN103990634B (en) | Recovery method for electronic waste and waste lead-acid cells | |
| CN108707756A (en) | A method of with oxygen-enriched side-blown reducing smelting furnace integrated treatment copper fumes | |
| CN108950236A (en) | A kind of technique of clean and effective processing lead containing sludge | |
| CN101749931A (en) | Smelting furnace | |
| CN109022791A (en) | A method of directly blown low-grade oxidation lead zine ores with fuming furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181207 |
|
| WD01 | Invention patent application deemed withdrawn after publication |