CN103629920B - A kind of vertical updraught sintering reactor - Google Patents
A kind of vertical updraught sintering reactor Download PDFInfo
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- CN103629920B CN103629920B CN201310546830.XA CN201310546830A CN103629920B CN 103629920 B CN103629920 B CN 103629920B CN 201310546830 A CN201310546830 A CN 201310546830A CN 103629920 B CN103629920 B CN 103629920B
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Abstract
A kind of vertical updraught sintering reactor, comprise the body of heater of vertical installation, the top of described body of heater is provided with dust collection cover, and this dust collection cover is provided with charging aperture and exhanst gas outlet; Preheating zone, baking zone, oxidation and semi-molten sintering zone, cooling zone is comprised from top to bottom successively in the middle part of body of heater; The bottom of body of heater is provided with breaker, this breaker comprises being positioned at the dynamic frontal plate that rotating disk that the backing roll at body of heater radial center place is rotating shaft connects and the quota plate be fixed on furnace wall, the bottom of described body of heater is also provided with discharging opening and blast channel, and the blast orifice of blast channel is located at below dynamic frontal plate.The present invention is directed to the pretreatment of leaded secondary material, the vertical reactor integrating oven dry, sintering, air blast is adopted in plumbous field of smelting, eliminate the seriously polluted problem of sintering machine in tradition refining lead, solve again the difficult problem focusing on leaded secondary slugs, with the further process to leaded secondary material, realize recycling.
Description
Technical field
The present invention relates to the pyrometallurgical smelting equipment of metal, particularly relate to a kind of vertical updraught sintering reactor.
Background technology
At present, the present age, the production method of lead was almost pyrometallurgical smelting entirely, and wet method refining is plumbous is also in conceptual phase at present.Tradition refining lead or new lead-smelting method are all based on redox principle, and just energy consumption height is different from the degree weight of environmental pollution in difference.Oxidizing roasting-retailoring of blast furnace, as the most traditional lead-smelting method, about 90% of ore deposit lead is in the world produced by this method at present.This method comprises vulcanized lead and other sulfide high-temperature oxydation in concentrate of lead sulfide ore and generates the process that oxide (also may generate metal) or Reduction of Oxide become metal.As vulcanized lead completes following reaction when oxidation-reduction smelting:
2PbS+3O
2=2PbO+2SO
2；
PbO+CO(C)=Pb+CO
2(CO)；
PbS+O
2=Pb+SO
2；
This method carries out high-temperature oxydation desulfurization to concentrate of lead sulfide ore on sintering machine, and lead-containing material clinkering is become agglomerate, and then by sintering, in blast furnace, carry out reduction melting together with coke obtains lead bullion soon.This method has the features such as strong adaptability, stable production process, production capacity is large, so be still used as main lead-smelting method so far.But also there is the shortcomings such as the high and environmental pollution of energy consumption is serious in this method, is thus subject to the impact of Process of Direct Lead Smelting method.
Single step smelting lead method is the concentrate of lead sulfide ore rapid oxidation utilizing powdery or melting, a large amount of heat is released in unit interval, impel and instantaneously between each component in furnace charge complete all metallurgical reactions, reaction heat is fully used, thus overcomes the shortcoming of traditional lead smelting process and be developed.
But, above-mentioned retailoring of blast furnace method and single step smelting lead method two kinds routine refining splicer skill all cannot all process leaded secondary slugs, the particularly granular material of (containing the crystallization water) of sulfur-bearing lead plumbate, lead silicate, lead oxide, because these lead-containing materials in oven dry and oxidizing process not only can not instantaneously combustion heat release to maintain the heat balance in drying materials, semi-molten and oxidizing process, first carry out when such as lead sulfate is in oxidizing process the endothermic reaction, after carry out exothermic reaction, its oxidation equation formula is: PbSO
4(during heat absorption Dao≤600o)=PbS+2O
2, 2PbS+3O
2(heat release)=2PbO+2SO
2.So bring fatal harm to conventional refining splicer skill especially single step smelting lead technique, because single step smelting lead technical process is carried out in an airtight container, the oven dry of material, oxidation, fusion process require to complete physical-chemical reaction instantaneously under heat release high-temperature situation, so that normally the carrying out of material reduction process.Plumbous secondary material especially sulfur-bearing lead plumbate, lead silicate, lead oxide then do not possess above-mentioned condition containing the granular material of the crystallization water, therefore refine in plumbous process and cannot concentrate this material of a large amount of process, thus cause the very unmanageable situation of this material.
In sum, there is following defect in existing refining splicer skill: 1) cannot all use leaded secondary slugs to refine plumbous; 2) traditional oxidizing roasting-retailoring of blast furnace method energy consumption is high; 3) in oxidizing roasting process because flue gas, dust leak and absorption rate of sulfur dioxide is not up to standard, thus cause environmental pollution serious.
Summary of the invention
In order to overcome the weak point of the prior art of above-mentioned indication, the invention provides a kind of vertical updraught sintering reactor, being difficult to concentrate the problem of refining and recycling to solve the with serious pollution problem of sintering machine and leaded secondary slugs in tradition refining lead.
The present invention is achieved by the following technical solutions:
A kind of vertical updraught sintering reactor, comprise the body of heater of vertical installation, the top of described body of heater is provided with dust collection cover, and this dust collection cover is provided with charging aperture and exhanst gas outlet; Preheating zone, baking zone, oxidation and semi-molten sintering zone, cooling zone is comprised from top to bottom successively in the middle part of body of heater; The bottom of body of heater is provided with breaker, this breaker comprises being positioned at the dynamic frontal plate that rotating disk that the backing roll at body of heater radial center place is rotating shaft connects and the quota plate be fixed on furnace wall, the bottom of described body of heater is also provided with discharging opening and blast channel, and the blast orifice of blast channel is located at below dynamic frontal plate.
Furnace wall corresponding with dynamic frontal plate installation site is further fixed with at least one ring-type quota plate, the longitudinal section of this quota plate is domatic.
Described blast channel stretches to body of heater radial center beyond furnace wall, is socketed on outside the backing roll of breaker, and extends to below dynamic frontal plate.The blast hood of semi-sphere shape is fixedly connected with above described dynamic frontal plate.
Further, described backing roll is connected at the transmission mechanism of bottom of furnace body.
Preferably, the furnace wall of described oxidation and semi-molten sintering zone has ventilating opening connecting secondary air-blast device.
The top of described truncated cone-shaped dust collection cover is charging aperture, and side is provided with the operating means of exhanst gas outlet and vertical updraught sintering reactor.Preferably, described charging aperture place is provided with charge level control device, and this charge level control device is gamma-rays controller.
Furnace wall in the middle part of described body of heater adopts refractory material, and comprises the inwall adopting metal material and the outer wall adopting refractory material near the furnace wall of breaker.
Compared with prior art, the present invention is directed to the present situation that conventional lead smelting process and single step smelting lead method all cannot process leaded secondary slugs, the pretreatment for leaded secondary material adopts the vertical reactor integrating oven dry, sintering, air blast in plumbous field of smelting; Mixed by leaded secondary material after processing in the reactor with other flux, flue gas is qualified discharge through lowering the temperature, gathering dust, after desulfurization process, and lead-containing material forms porous, hard oxidation block after preheating, oven dry, oxidation and sinter, cooling, fragmentation; It is seriously polluted that this method had both eliminated sintering machine in tradition refining lead, and do not meet the problem of environmental requirement, solve again the difficult problem focusing on leaded secondary slugs, the further process for leaded secondary material realizes resources circulation and started new process route.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of vertical updraught sintering reactor of the present invention;
Accompanying drawing 2 is the close-up schematic view of A in accompanying drawing 1;
Accompanying drawing 3 is the refining lead system connection diagram applying vertical updraught sintering reactor of the present invention;
Accompanying drawing 4 is the plumbous process flow diagram of refining applying vertical updraught sintering reactor of the present invention.
In figure: 1-body of heater, 2-dust collection cover, 3-charging aperture, 4-exhanst gas outlet, 5-preheating zone, 6-baking zone, 7-oxidation and semi-molten sintering zone, 8-cooling zone, 9-breaker, 10-backing roll, 11-rotating disk, 12-moves frontal plate, 13-quota plate, 14-discharging opening, 15-blast channel, 16-blast hood, 17-transmission mechanism, 18-operating means, 19-inwall, 20-outer wall, 21-blanking device, 22-belt feeder, 23-bucket elevator, 24-biaxial rneader, 25-drum pelletizer, the vertical updraught sintering reactor of 26-, 27-surface-cooler, 28-bagroom, 29-desulfurizing tower, 30-chimney.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with accompanying drawing, the invention will be further described.
A kind of vertical updraught sintering reactor, as shown in Figure 1, comprise the body of heater 1 of vertical installation, the top of described body of heater is provided with dust collection cover 2, and this dust collection cover is provided with charging aperture 3 and the exhanst gas outlet 4 for discharging ash-laden gas.Particularly, the top of described truncated cone-shaped dust collection cover 2 is charging aperture 3, and side is provided with exhanst gas outlet 4, and the flue gas produced in reaction is expelled to flue gas processing device.The operating means 18 of vertical updraught sintering reactor is also installed in described dust collection cover 2; this operating means is used for carrying out centralized Control and adjustment to the parameter such as the blow rate required, temperature, discharging speed of reactor, and described dust collection cover is provided with the actuating doors for the protection of this operating means.Charging aperture 3 place of described dust collection cover is also provided with charge level control device, and this charge level control device is gamma-rays controller, for ensureing the degree of accuracy that automatic blanking is located.
Comprise successively from top to bottom in the middle part of described body of heater 1 preheating zone 5, baking zone 6, oxidation and semi-molten sintering zone 7, cooling zone 8.After material enters reactor, from top to bottom through preheating zone, baking zone, oxidation semi-molten sintering zone, cooling zone.The design temperature of described preheating zone 5 is 100 DEG C ~ 350 DEG C, and baking zone 6 is 350 DEG C ~ 650 DEG C, and oxidation semi-molten sintering zone 7 is 650 DEG C ~ 950 DEG C, and cooling zone 8 is 150 DEG C ~ 900 DEG C.Wherein, the furnace wall of described oxidation and semi-molten sintering zone 7 has ventilating opening connecting secondary air-blast device, to supplement air in course of reaction.Described furnace body outer wall is also provided with waste-heat recovery device, collects the heat energy produced in course of reaction, output low-pressure steam, by the heat recycling reclaimed.
As shown in Figure 2, the bottom of described body of heater 1, especially the bottom of cooling zone 8 is provided with breaker 9, and this breaker comprises the dynamic frontal plate 12 and quota plate 13 that cooperatively interact.Described dynamic frontal plate 12 is connected to be positioned on the rotating disk 11 that the backing roll 10 at body of heater radial center place is rotating shaft, and described backing roll 10 is connected at the transmission mechanism 17 of bottom of furnace body, is driven rotate by this transmission mechanism 17.The furnace wall corresponding with dynamic frontal plate 12 installation site is fixed with at least one ring-type quota plate 13, the longitudinal section of this quota plate is domatic.Furnace wall is as shown in Figure 1 fixed with two quota plates.The described dynamic frontal plate 12 with dial rotation forms crushing force with the quota plate 13 on furnace wall, and automatic pulverizing forms porous, hard oxidation block, so that subsequent treatment after the material of sintering; And contribute to material and be evenly distributed.
The bottom of described body of heater is also provided with discharging opening 14 and blast channel 15, and the blast orifice of blast channel is located at below dynamic frontal plate 12.Described blast channel 15 stretches to body of heater radial center beyond furnace wall, is socketed on outside the backing roll 10 of breaker, and extends to below dynamic frontal plate 12.Blast channel 15 is connected in the blast apparatus of reactor outside, and air flows to blast orifice by blast channel 15, and through rotating disk 11, carries out air blast cooling to the material of cooling zone 8.Preferably, the blast hood 16 being fixedly connected with semi-sphere shape above described dynamic frontal plate 12 prevents its blocking blast orifice for isolating material, and air enters cooling zone through this blast hood 16.
Furnace wall in the middle part of described body of heater adopts refractory material, preferably, the close breaker of cooling zone and the furnace wall in air blast region comprise the inwall 19 adopting metal material and the outer wall 20 adopting refractory material, use the inwall of metal material can resist the impulsive force caused inwall when material seethes, avoid inwall to damage.The height overall of described vertical updraught sintering reactor controls at 6 ~ 9 meters, and freely can adjust according to plumbous secondary material different in kind, feeding quantity size controls according to desired yield rate size.
The vertical updraught sintering reactor of this invention is owing to only arranging a flue gas discharge opening, so achieve dust-laden, concentrated discharge containing sulfur dioxide flue gas, qualified discharge can be realized completely after follow up device process, thus overcome dust, the sulfur dioxide flue gas that normal sintering machine exists and leak, the situation that environmental pollution is serious.
In the preferred embodiment, adopt overall process computer controlled automatic, namely various material all realizes automation from material loading, transport, discharging, especially in the reactor automatically the blow rate required is adjusted according to the burning velocity of different material characteristic, automatically adjust quantum of output according to the cooling velocity of different material characteristic simultaneously, thus realize the proportioning of oven dry, sintering process optimal processing parameter.
As shown in Figure 3, the refining lead system utilizing reactor of the present invention is disclosed.Described refining lead system comprises blanking device 21, utilizes device and smoke processing system for the belt feeder 22 and bucket elevator 23, biaxial rneader 24, drum pelletizer 25, vertical updraught sintering reactor 26, air-blast device, low-pressure vapor residual heat transporting material.Described smoke processing system comprises surface-cooler 27, bagroom 28, desulfurizing tower 29 and chimney 30 successively.
As shown in Figure 4, the refining splicer skill utilizing reactor of the present invention is disclosed.The present situation of leaded secondary slugs all cannot be processed, first, by leaded secondary slugs (PbSO for conventional lead smelting process and single step smelting lead method
4, Pbs, Pbo, Pbsio
3deng), iron-containing waste, agstone, anchracite duff and other flux etc. are mixed into blanking device by a certain percentage, quantitatively vertical updraught sintering reactor is added continuously again after stirring and granulating, granular material is in the reactor from top to bottom through preheating zone (temperature 100 ~ 350 DEG C), baking zone (350 ~ 650 DEG C), oxidation semi-molten sintering zone (650 ~ 950 DEG C), cooling zone (900 ~ 150 DEG C), and form porous after automatic pulverizing, hard oxidation block, export subsequent handling to, block and certain proportion coke are carried out reduction melting in blast furnace and obtains lead bullion.
This refines the chemical reaction sensible heat that plumbous process makes full use material own combustion produces, and another aspect anchracite duff burning institute quantity of heat production carrys out the heat in supplementary plumbous secondary material oven dry, oxidizing process needed for the endothermic reaction.Due to said process, to complete the reaction time slower, the possibility realized in Process of Direct Lead Smelting method is minimum, so this technique just completes the oxidation pre-treatment of plumbous secondary material, form porous, hard oxidation block by plumbous secondary material, then fast and certain proportion coke are carried out reduction melting in blast furnace under high temperature and reducing atmosphere and obtain lead bullion.Another feature of this technique makes full use of waste heat to reduce energy resource consumption, installed waste-heat recovery device additional, output low-pressure steam outside vertical updraught sintering reactor.The present invention confirms practical through commerical test, and operational effect is good, and described vertical updraught sintering reactor can replace tradition refining Lead sintering machine completely, and its technique for applying is the ideal technology of the plumbous secondary material of process at present in fact.
The batching of leaded secondary slugs and other material, flux, mix, stirring, granulation etc. adopt the steps flow chart similar to conventional refining splicer skill.And fume treatment is compared with conventional lead-smelting method, the concentration requirement not reaching Sulphuric acid because processing leaded secondary slugs sulfur dioxide in flue gas concentration can not Sulphuric acid, thus the ash-laden gas that produces of this technique after dedusting through alkali lye (as sodium hydroxide solution) wash up to standard after discharge through chimney.Flue gas is as follows through alkali liquid washing reaction equation:
CaO+H
2O=Ca(OH)
2；
Ca(OH)
2+SO
2=CaSO
3+H
2O；
CaSO
3+ H
2o+O
2=CaSO
4+ 2H
2o (gypsum).
The flue gas that this technique produces is qualified discharge through lowering the temperature, gathering dust, after desulfurization, and all use leaded secondary slugs as refining leady raw materials, the lead-containing material that leaded secondary slugs exports after vertical updraught sintering reactor can meet the requirement of Lead Smelting in Blast Furnace, both sintering machine in tradition refining lead had been eliminated seriously polluted, do not meet the problem of environmental requirement, solve again the difficult problem focusing on leaded secondary slugs, for the further process of leaded secondary material and resources circulation provide a kind of new process.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, should not assert that specific embodiment of the invention is confined to above explanation.For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, within the protection domain that the claim that all should be considered as being submitted to by the present invention is determined.
Claims (8)
1. a vertical updraught sintering reactor, comprise the body of heater (1) of vertical installation, it is characterized in that: the top of described body of heater is provided with dust collection cover (2), this dust collection cover is provided with charging aperture (3) and exhanst gas outlet (4); Preheating zone (5), baking zone (6), oxidation and semi-molten sintering zone (7), cooling zone (8) are comprised from top to bottom successively in the middle part of body of heater; The bottom of body of heater is provided with breaker (9), this breaker comprises being positioned at the dynamic frontal plate (12) that rotating disk (11) that the backing roll (10) at body of heater radial center place is rotating shaft connects and the quota plate (13) be fixed on furnace wall, the bottom of described body of heater is also provided with discharging opening (14) and blast channel (15), and dynamic frontal plate (12) below is located at by the blast orifice of blast channel;
The furnace wall of described oxidation and semi-molten sintering zone (7) has ventilating opening connecting secondary air-blast device.
2. vertical updraught sintering reactor according to claim 1, is characterized in that: the furnace wall corresponding with dynamic frontal plate (12) installation site is fixed with at least one ring-type quota plate (13), and the longitudinal section of this quota plate is domatic.
3. vertical updraught sintering reactor according to claim 2, it is characterized in that: described blast channel (15) stretches to body of heater radial center beyond furnace wall, be socketed on the backing roll (10) of breaker outward, and extend to dynamic frontal plate (12) below.
4. vertical updraught sintering reactor according to claim 3, is characterized in that: described dynamic frontal plate (12) top is fixedly connected with the blast hood (16) of semi-sphere shape.
5. vertical updraught sintering reactor according to claim 4, is characterized in that: described backing roll (10) is connected at the transmission mechanism (17) of bottom of furnace body.
6. vertical updraught sintering reactor according to claim 1, it is characterized in that: the top of described dust collection cover (2) is charging aperture (3), and side is provided with the operating means (18) of exhanst gas outlet (4) and vertical updraught sintering reactor.
7. vertical updraught sintering reactor according to claim 6, it is characterized in that: described charging aperture (3) place is provided with charge level control device, this charge level control device is gamma-rays controller.
8. the vertical updraught sintering reactor according to any one of claim 1 ~ 7, it is characterized in that: the furnace wall in the middle part of described body of heater adopts refractory material, and comprise the inwall (19) adopting metal material and the outer wall (20) adopting refractory material near the furnace wall of breaker.
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| CN201310546830.XA CN103629920B (en) | 2013-11-07 | 2013-11-07 | A kind of vertical updraught sintering reactor |
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| CN103629920B true CN103629920B (en) | 2016-04-13 |
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| CN105066703B (en) * | 2015-08-31 | 2017-03-15 | 钦州西北冶金设备有限公司 | Highly effective energy-conserving vertical sintering machine |
| CN112179139B (en) * | 2020-09-29 | 2023-10-24 | 镇江瑞昊工程塑料有限公司 | Batch feeding device for baking oven sintering furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5288203A (en) * | 1976-01-20 | 1977-07-23 | Nippon Kokan Kk <Nkk> | Operation of hot stove |
| JP2001056183A (en) * | 1999-08-12 | 2001-02-27 | Tokyo Kozai Kk | Vertical shaft cupola/blast furnace/melting furnace method |
| JP2008163399A (en) * | 2006-12-28 | 2008-07-17 | Denka Consult & Eng Co Ltd | Curing device for agglomerated fine powder |
| CN201463498U (en) * | 2009-05-12 | 2010-05-12 | 济源市万洋冶炼(集团)有限公司 | Lead refining device |
| CN101979942A (en) * | 2010-10-23 | 2011-02-23 | 郴州市国大有色金属冶炼有限公司 | One-step lead smelting blast furnace |
| CN201779968U (en) * | 2010-06-03 | 2011-03-30 | 浙江大学 | Roasting system of moving bed |
-
2013
- 2013-11-07 CN CN201310546830.XA patent/CN103629920B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5288203A (en) * | 1976-01-20 | 1977-07-23 | Nippon Kokan Kk <Nkk> | Operation of hot stove |
| JP2001056183A (en) * | 1999-08-12 | 2001-02-27 | Tokyo Kozai Kk | Vertical shaft cupola/blast furnace/melting furnace method |
| JP2008163399A (en) * | 2006-12-28 | 2008-07-17 | Denka Consult & Eng Co Ltd | Curing device for agglomerated fine powder |
| CN201463498U (en) * | 2009-05-12 | 2010-05-12 | 济源市万洋冶炼(集团)有限公司 | Lead refining device |
| CN201779968U (en) * | 2010-06-03 | 2011-03-30 | 浙江大学 | Roasting system of moving bed |
| CN101979942A (en) * | 2010-10-23 | 2011-02-23 | 郴州市国大有色金属冶炼有限公司 | One-step lead smelting blast furnace |
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