CN103993176B - Oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refining splicer skill - Google Patents
Oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refining splicer skill Download PDFInfo
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Abstract
The invention discloses a kind of oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refining splicer skill, comprising: lead-containing material is joined in oxygen-enriched top blowing smelting furnace and carry out top-blown oxidation melting, to obtain lead bullion, melting high lead slag and a sulfur dioxide flue gas; The described melting high lead slag of discharging from described oxygen-enriched top blowing smelting furnace is supplied in liquid high lead dross side-blown reduction stove, carries out side-blown reduction melting, to obtain secondary lead bullion, reduction furnace slag and reduction furnace flue gas; A lead bullion and discharge secondary lead bullion in described liquid high lead dross side-blown reduction stove is discharged with in described oxygen-enriched top blowing smelting furnace.According to the energy-conserving and environment-protective of refining splicer skill, the energy consumption reduction of the embodiment of the present invention, metal recovery rate is high.
Description
Technical field
The present invention relates to technical field of non-ferrous metallurgy, relate to a kind of refining splicer skill particularly, more specifically, relate to a kind of oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refining splicer skill.
Background technology
China is the plumbous production and consumption big country of the first in the world, and within 2012, plumbous output reaches 464.6 ten thousand tons, and consumption is 4,510,000 tons, China Ye Shi lead ore resource-starved country, plumbous leaded only 283.8 ten thousand tons of ore deposit in 2012, far can not meet the need of production of lead smelting in China, most of leady raw materials needs import.Traditional refining splicer skill is sintering-retailoring of blast furnace, but it is high to there is energy consumption, with serious pollution shortcoming.Oxygen bottom blowing oxidation-blast furnace reduction process (SKS lead smelting process) is also proposed in correlation technique, and base husband Saite method etc.High lead slag-blast furnace process in correlation technique, needs the high lead slag after melting to cool, utilizes casting slag machine casting slag, utilizes blast furnace reduction, thus energy consumption is high, metal direct recovery rate is low, blast furnace environment is poor, and blast furnace production and application coke, has the shortcoming that cost is high.
Summary of the invention
The present invention is intended to solve the problem in correlation technique.
For this reason, one object of the present invention is to propose a kind of refining splicer skill, energy consumption and cost low, good environmental protection, metal recovery rate is high.
According to the refining splicer skill of the embodiment of the present invention, comprising: lead-containing material is joined in oxygen-enriched top blowing smelting furnace and carry out top-blown oxidation melting, to obtain lead bullion, melting high lead slag and a sulfur dioxide flue gas; The described melting high lead slag of discharging from described oxygen-enriched top blowing smelting furnace is supplied in liquid high lead dross side-blown reduction stove, carries out side-blown reduction melting, to obtain secondary lead bullion, reduction furnace slag and reduction furnace flue gas; A lead bullion and discharge secondary lead bullion in described liquid high lead dross side-blown reduction stove is discharged with in described oxygen-enriched top blowing smelting furnace.
According to the refining splicer skill of the embodiment of the present invention, utilize oxygen-enriched top blowing smelting furnace to lead-containing material, such as lead ore concentrate etc. carry out top blow smelting, the melting high lead slag obtained is sent in liquid high lead dross side-blown reduction stove with molten state and is carried out side-blown reduction, without the need to high lead slag (or being called lead-rich slag) first being cooled casting slag, after to heat up again smelting reduction, therefore heat-energy losses is little, and energy consumption reduces; In addition, owing to directly carrying out retailoring to hot melting high lead slag, therefore comprehensive energy consumption declines further.Therefore, according to the energy-conserving and environment-protective of refining splicer skill, the energy consumption reduction of the embodiment of the present invention, metal recovery rate is high.
According to some embodiments of the present invention, refining splicer skill also comprises: be supplied in electrothermal front bed by described reduction furnace slag and carry out temperature raising and clarification; With by temperature raising and clarification after reduction furnace slag be discharged in fuming furnace in described electrothermal front bed, in described fuming furnace, spray into fine coal and air, to blow to described reduction furnace slag; With the zinc oxide fumes the flue gas that collection is discharged in described fuming furnace.
Further, refine splicer's skill also to comprise: the waste heat reclaiming the flue gas of discharging from described liquid high lead dross side-blown reduction stove and described fuming furnace; To go out from described liquid high lead dross side-blown reduction fire grate and flue gas after recovery waste heat carries out dedusting; Desulfurization is carried out to the flue gas that have collected after zinc oxide fumes and dedusting; With reclaim described sulfur dioxide flue gas waste heat, dedusting carried out to sulfur dioxide flue gas, utilize the sulphur dioxide flue gas acid preparing after dedusting.
Accompanying drawing explanation
Fig. 1 is the schematic diagram according to the plumbous equipment of the refining of the embodiment of the present invention.
Fig. 2 is the schematic flow sheet of the refining splicer skill according to the embodiment of the present invention.
Reference numeral:
Oxygen-enriched top blowing smelting furnace 1, top blast furnace body 11, top-blown spray gun 12, top blast stove charging opening 110, top blast stove smoke outlet 111, melting high lead slag outlet 112, lead bullion outlet 113,
Liquid high lead dross side-blown reduction stove 2, side-blown converter body of heater 21, side-blown spray gun 22, side-blown converter charging opening 210, side-blown converter smoke outlet 211, melting high lead slag entrance 212, secondary lead bullion outlet 213, side-blown converter slag notch 214,
Electrothermal front bed 3, external crucible body of heater 31, electrode 32, reduced blast furnace entrance 310, external crucible slag notch 311,
Fuming furnace 4, fuming furnace body of heater 41, warm sludge mouth 410, exhanst gas outlet 411, fine coal air entrance 42, cold burden leached mud opening for feed 412, slag notch 413, the first chute 5, second chute the 6, three chute 7
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Below with reference to the accompanying drawings describe according to the plumbous equipment of the refining of the embodiment of the present invention, also can be called that oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refines plumbous equipment according to the plumbous equipment of the refining of the embodiment of the present invention
Oxygen-enriched top blowing smelting furnace and liquid high lead dross side-blown reduction stove is mainly comprised according to the plumbous equipment of the refining of the embodiment of the present invention.
Oxygen-enriched top blowing smelting furnace 1 has top blast furnace body 11 and in body of heater, sprays into the top-blown spray gun 12 containing oxygen air from top blast furnace body 11 top, and top blast furnace body 11 has top blast stove charging opening 110, top blast stove smoke outlet 111, melting high lead slag outlet 112 and a lead bullion outlet 113.
Liquid high lead dross side-blown reduction stove 2 has side-blown converter body of heater 21 and in side-blown converter body of heater 21, sprays into fuel and the side-blown spray gun 22 containing oxygen air from side-blown converter body of heater 21 side, side-blown converter body of heater 21 has side-blown converter charging opening 210, side-blown converter smoke outlet 211, exports the 112 melting high lead slag entrances 212 be connected, secondary lead bullion exports 213 and side-blown converter slag notch 214 with melting high lead slag.
According to the plumbous equipment of the refining of the embodiment of the present invention, utilize oxygen-enriched top blowing smelting furnace 1 pair of lead-containing material, such as lead ore concentrate etc. carry out top blow smelting, the melting high lead slag obtained is sent in liquid high lead dross side-blown reduction stove 2 with molten state and is carried out side-blown reduction, without the need to high lead slag (or being called lead-rich slag) first being cooled casting slag, after to heat up again smelting reduction, therefore heat-energy losses is little, and energy consumption reduces; In addition, owing to directly carrying out retailoring to hot melting high lead slag, therefore comprehensive energy consumption declines further.Therefore, reduce according to the plumbous device energy conservation environmental protection of the refining of the embodiment of the present invention, energy consumption, metal recovery rate is high.
Describe according to the plumbous equipment of the refining of the specific embodiment of the invention below with reference to Fig. 1.
As shown in Figure 1, oxygen-enriched top blowing smelting furnace 1, liquid high lead dross side-blown reduction stove 2, electrothermal front bed 3 and fuming furnace 4 is also comprised according to the plumbous equipment of the refining of the specific embodiment of the invention.Oxygen-enriched top blowing smelting furnace 1 and liquid high lead dross side-blown reduction stove 2 and for the electrothermal front bed 3 that refines plumbous warm sludge process and fuming furnace 4, define the complete process of the follow-up harmless treatment of a set of lead smelting slag and synthetical recovery.
Oxygen-enriched top blowing smelting furnace 1 has top blast furnace body 11 and in body of heater, sprays into the top-blown spray gun containing oxygen air from top blast furnace body 11 top, and top blast furnace body 11 has top blast stove charging opening 110, top blast stove smoke outlet 111, melting high lead slag outlet 112 and a lead bullion outlet 113.
Liquid high lead dross side-blown reduction stove 2 has side-blown converter body of heater 21 and in side-blown converter body of heater 21, sprays into fuel and the side-blown spray gun 22 containing oxygen air from side-blown converter body of heater 21 side, side-blown converter body of heater 21 has side-blown converter charging opening 210, side-blown converter smoke outlet 211, melting high lead slag entrance 212, secondary lead bullion outlet 213 and side-blown converter slag notch 214.
The electrode 32 that electrothermal front bed 3 has external crucible body of heater 31 and is inserted in external crucible body of heater 31, external crucible body of heater 31 has reduced blast furnace entrance 310 and external crucible slag notch 311.Melting high lead slag outlet 112 is connected with melting high lead slag entrance 212 by the first chute 5, and side-blown converter slag notch 214 is connected by the second chute 6 with reduced blast furnace entrance 310, and external crucible slag notch 311 is connected by the 3rd chute 7 with warm sludge mouth 410.Fuming furnace 4 has fuming furnace body of heater 41, and fuming furnace body of heater 41 has fine coal air entrance 42, warm sludge mouth 410, cold burden leached mud opening for feed 412, exhanst gas outlet 411 and slag notch 413.
According to the plumbous equipment of the refining of this embodiment of the present invention, the melting high lead slags of discharging from the melting high lead slag of oxygen-enriched top blowing smelting furnace 1 outlet 112 are sent in liquid high lead dross side-blown reduction stove 2 by the first chute 5 and carry out side-blown reduction melting, the reduced blast furnace obtained is entered in electrothermal front bed 3 by the second chute 6 and carries out temperature raising and clarification, further separation of lead or matte, and the activity duration of coordinating that reduction furnace 2 produces with fuming furnace 4 simultaneously.Reduced blast furnace after temperature raising and clarification enters fuming furnace 4 with zinc factory leached mud priority, carries out retailoring, volatilization, reclaims the lead of the zinc in slag, dissipated metal and remnants, silver realize the harmless treatment of slag with flue dust form further.
In some embodiments of the invention, the plumbous equipment of described refining also comprises waste heat boiler, surface cooler, bagroom and electric precipitator.Wherein, waste heat boiler comprises the first waste heat boiler, the second waste heat boiler and the 3rd waste heat boiler, and surface cooler comprises first surface water cooler and second surface water cooler, and bagroom comprises the first bagroom and the second bagroom.
The inlet mouth of described first waste heat boiler is connected with described exhanst gas outlet 411, and the entrance of described first surface water cooler is connected with the air outlet of described first waste heat boiler, and described first bagroom is connected with the outlet of described first surface water cooler.
The inlet mouth of described second waste heat boiler is connected with described side-blown converter smoke outlet 211, and the entrance of described second surface water cooler is connected with the air outlet of described second waste heat boiler, and described second bagroom is connected with the outlet of described second surface water cooler.
The inlet mouth of described 3rd waste heat boiler is connected with described top blast stove smoke outlet 111, and the air outlet of described 3rd waste heat boiler is connected with the entrance of described electric precipitator, and the outlet of described electric precipitator is connected with acid making system.
Thus, according to the plumbous equipment of the refining of the embodiment of the present invention, the high sulfur dioxide flue gas of the sulfur dioxide concentration of discharging from the top blast stove smoke outlet 111 of oxygen-enriched top blowing smelting furnace 1 is by waste heat waste heat boiler, electric precipitator recovered flue gas, dedusting Hou Song acid plant produces sulfuric acid, and the dust that dedusting obtains returns oxygen-enriched top blowing smelting furnace 1.
The SO 2 from fume concentration of discharging from the side-blown converter smoke outlet 211 of liquid high lead dross side-blown reduction stove 2 is lower, waste heat in waste heat boiler, surface cooler and bagroom recovered flue gas, and the dust obtained that gathers dust returns liquid high lead dross side-blown reduction stove 2.From the waste heat of flue gas through waste heat boiler, surface cooler and sack cleaner recovered flue gas that the exhanst gas outlet 411 of fuming furnace 4 is discharged, after dedusting, flue gas and reduction furnace flue gas are merged into desulphurization system.The zinc oxide fumes Song Xin factory obtained of gathering dust processes output zinc and dissipated metal product further.Lead smelting gas is circulated to plumbous factory and produces plumbous, silver products, achieves complete recycling economy
Refining splicer skill according to the embodiment of the present invention is described below, oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refining splicer skill can be called according to the refining splicer skill of the embodiment of the present invention.
Refining splicer skill according to the embodiment of the present invention comprises the following steps:
Lead-containing material is joined in oxygen-enriched top blowing smelting furnace and carry out top-blown oxidation melting, to obtain lead bullion, melting high lead slag and a sulfur dioxide flue gas.
The melting high lead slag of discharging from oxygen-enriched top blowing smelting furnace is supplied in liquid high lead dross side-blown reduction stove, carries out side-blown reduction melting, to obtain secondary lead bullion, reduction furnace slag and reduction furnace flue gas.
In described oxygen-enriched top blowing smelting furnace, discharge a lead bullion and discharge secondary lead bullion in described liquid high lead dross side-blown reduction stove.
According to the refining splicer skill of the embodiment of the present invention, utilize oxygen-enriched top blowing smelting furnace to lead-containing material, such as lead ore concentrate etc. carry out top blow smelting, the melting high lead slag obtained is sent in liquid high lead dross side-blown reduction stove with molten state and is carried out side-blown reduction, without the need to high lead slag (or being called lead-rich slag) first being cooled casting slag, after to heat up again smelting reduction, therefore heat-energy losses is little, and energy consumption reduces; In addition, owing to directly carrying out retailoring to hot melting high lead slag, therefore comprehensive energy consumption declines further.Therefore, according to the energy-conserving and environment-protective of refining splicer skill, the energy consumption reduction of the embodiment of the present invention, metal recovery rate is high.
Below with reference to Fig. 2, the refining splicer skill according to the present invention's specific embodiment is described.
As shown in Figure 2, comprise the following steps according to the refining splicer skill of the specific embodiment of the invention:
Lead-containing material is joined in oxygen-enriched top blowing smelting furnace and carry out top-blown oxidation melting, to obtain lead bullion, melting high lead slag and a sulfur dioxide flue gas.
The melting high lead slag of discharging from oxygen-enriched top blowing smelting furnace is supplied in liquid high lead dross side-blown reduction stove, carries out side-blown reduction melting, to obtain secondary lead bullion, reduction furnace slag and reduction furnace flue gas.
In described oxygen-enriched top blowing smelting furnace, discharge a lead bullion and discharge secondary lead bullion in described liquid high lead dross side-blown reduction stove.
Described reduction furnace slag is supplied in electrothermal front bed and carries out temperature raising and clarification, lead remaining in slag and matte, and adjust the working cycle of reduction furnace and fuming furnace.
Being discharged in described electrothermal front bed by reduction furnace slag after temperature raising and clarification enters in fuming furnace with spelter works leached mud priority, in described fuming furnace, spray into fine coal and air, retailoring and blowing are realized to slag and reclaims valuable metal in slag and that slag is realized is innoxious.
Collect the zinc oxide fumes the flue gas of discharging in described fuming furnace.
Reclaim the waste heat of the flue gas of discharging from described liquid high lead dross side-blown reduction stove and described fuming furnace
To go out from described liquid high lead dross side-blown reduction fire grate and flue gas after recovery waste heat carries out dedusting
Desulfurization is carried out to the flue gas that have collected after zinc oxide fumes and dedusting
Reclaim the waste heat of described top blow smelting stove sulfur dioxide flue gas, dedusting is carried out to sulfur dioxide flue gas, utilize the sulphur dioxide flue gas acid preparing after dedusting.
According to the refining splicer skill of this specific embodiment of the present invention, the comprehensively recovering valuable metal of lead refinery and zinc factory slag also achieves the harmless treatment of slag, further increases metal recovery rate, has played the advantage that lead-zinc smelting associated enterprises slag for comprehensive utilizes recycling economy; Plumbous smelting adopts the melting of top blast oxygen-rich air, molten state lead-rich slag side-blown Direct Reductive Melting, the warm sludge after reduction is also with processing spelter works's leached mud (cold burden), innovative technology and equipment, reduce energy consumption and improve metal recovery rate, improve environment significantly.Achieve flue gas during smelting and Slag treatment furnace flue gas exhaust heat remanufacture steam for generating.The high density sulfur oxide flue gas that top blast oxygen-enriched air smelting obtains carries out relieving haperacidity through waste heat recovery, dedusting, improves economic benefit.
Reduction furnace and fuming furnace flue gas carry out desulfurization after waste heat recovery is gathered dust, rear discharge up to standard.Desulfurization product, through acidolysis, parses high-concentration sulfur dioxide and top blow smelting kiln gas merges relieving haperacidity.Further increase environmental-protecting performance.The flue dust Returning smelting stove of top blast oxygen-enriched air smelting stove, side-blown reduction stove melting flue dust returns side-blown converter retailoring, and the zinc oxide fumes Song Xin factory that fuming furnace is rich in valuable metal produces zinc and dissipated metal.The lead smelting gas of zinc factory output returns top blast oxygen-enriched air smelting stove and reclaims plumbous silver.
Below with reference to Fig. 2, the refining splicer skill according to the present invention's concrete example is described.
Fig. 2 shows the oxygen-enriched top blowing melting-molten state high lead slag side-blown reduction refining splicer skill according to the present invention's concrete example, wherein the molten state high lead slag through the melting of oxygen-enriched top blowing smelting furnace top-blown oxidation is sent in liquid high lead dross side-blown reduction stove by chute, fuel adopts producer gas and Sweet natural gas, in liquid high lead dross side-blown reduction stove, be directly reduced to secondary lead bullion.
The concrete technology step of the refining splicer skill according to the concrete example of the present invention is described below in detail.
1, oxygen-enriched top blowing melting
Lead ore concentrate, lead smelting gas, oxidized ore, quartz; the returning charge of iron calcining and oxygen-enriched top blowing smelting furnace cigarette ash; after constant feeder batching, send disk pelletizing machine to granulate; pellet is sent in oxygen-enriched top blowing smelting furnace by reinforced rubber conveyer; in oxygen-enriched top blowing smelting furnace, oxygen-rich air is sprayed into by top-blown spray gun; the oxygen-rich air of such as oxygen concentration 60%-99%, to carry out oxidizing semlting, output lead bullion, melting high lead slag and containing sulfur dioxide flue gas.
2, liquid high lead dross side-blown reduction
The high lead slag of molten state flows directly in liquid high lead dross side-blown reduction stove by the first chute, broken coal is added to oxygen blast gas, air and coal gas (or Sweet natural gas) inside liquid high lead dross side-blown reduction stove by side-blown spray gun, Wingdale, carry out side-blown reduction melting, be understandable that, quartz sand or lime can be added to adjust slag type, process oxidation lead and zinc middlings of simultaneously can arranging in pairs or groups, output secondary lead bullion, reduced blast furnace and low concentration sulphur dioxide flue gas in reduction process.
3, the zinc oxide fumes of enrichment valuable element is reclaimed in blast furnace fuming
Reduced blast furnace flows into electrothermal front bed temperature raising and clarification by the second chute, the lead of clarification or matte discharge ingot casting by the plumbous mouth of bottom, refining is sent in the lump with the lead bullion of smelting furnace output, reduced blast furnace after clarification flows into fuming furnace through the 3rd chute, and fuming furnace cold burden mouth adds the conventional leached mud of zinc factory.By pulverized coal injection, primary air nozzle and secondary air in fuming furnace, retailoring and blowing are carried out to slag, obtain fuming slag and low concentration sulphur dioxide flue gas, low concentration sulphur dioxide flue gas is through waste heat boiler recovery waste heat, through surface cooler cooling, utilize bagroom to collect and obtain zinc oxide fumes.Zinc oxide fumes enters zinc oxide leaching system after sending multiple hearth furnace defluorinate chlorine.The broken rear take-away of fuming furnace pulp water.Fuming furnace low concentration sulphur dioxide flue gas send desulfurization process.
4, the low concentration sulphur dioxide flue gas of liquid high lead dross side-blown reduction stove generation, through waste heat boiler recovery waste heat, through surface cooler cooling, utilize bagroom dedusting, the flue dust obtained returns liquid high lead dross side-blown reduction stove.Flue gas after dedusting send the process of zinc oxide smoke absorption system, desulfurization rear discharge up to standard.
5, the high-concentration sulfur dioxide flue gas that produces of oxygen-enriched top blowing smelting furnace is after waste heat boiler, dust precipitator, send vitriol works's relieving haperacidity.The lead fume dirt that waste heat boiler and dust precipitator are collected returns oxygen-enriched top blowing smelting furnace batching; The low concentration sulphur dioxide flue gas that liquid high lead dross side-blown reduction stove and fuming furnace produce is through two-stage desulfurization: leading portion adopts zinc oxide desulfurization technique, the oxide powder and zinc smelting output is utilized to make absorption agent, the zinc sulfite of output is through peracid decomposition, output solution of zinc sulfate enters zinc wet method system and carries zinc, parses high-concentration sulfur dioxide and send sulfate system relieving haperacidity; Back segment adopts ammonia desulfurizing process, obtains byproduct chemical fertilizer ammonium sulfate.
The control process of oxygen-enriched top blowing smelting furnace, liquid high lead dross side-blown reduction stove and fuming furnace adopts DCS Controlling System, and realization batching, granulation, oxygen supply, air feed, melting, waste heat recovery, electricity gather dust and the full-range centralized Control of high temperature draught fan.DCS Controlling System mainly contains the compositions such as field control station, data communication system, human-machine interface unit, rack, power supply, and this is all known for those skilled in the art, here no longer repeated description.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification sheets or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (2)
1. oxygen-enriched top blowing melting-liquid high lead dross side-blown direct-reduction refining splicer skill, is characterized in that, comprising:
Lead-containing material is joined in oxygen-enriched top blowing smelting furnace and carry out top-blown oxidation melting, to obtain lead bullion, melting high lead slag and a sulfur dioxide flue gas;
The described melting high lead slag of discharging from described oxygen-enriched top blowing smelting furnace is supplied in liquid high lead dross side-blown reduction stove, carries out side-blown reduction melting, to obtain secondary lead bullion, reduction furnace slag and reduction furnace flue gas; With
In described oxygen-enriched top blowing smelting furnace, discharge a lead bullion and discharge secondary lead bullion in described liquid high lead dross side-blown reduction stove;
Described reduction furnace slag is supplied in electrothermal front bed and carries out temperature raising and clarification; With
Reduction furnace slag after temperature raising and clarification is discharged in fuming furnace in described electrothermal front bed, in described fuming furnace, sprays into fine coal and air, to blow to described reduction furnace slag; With
Collect the zinc oxide fumes the flue gas of discharging in described fuming furnace.
2. oxygen-enriched top blowing melting according to claim 1-liquid high lead dross side-blown direct-reduction refining splicer skill, is characterized in that, also comprise:
Reclaim the waste heat of the flue gas of discharging from described liquid high lead dross side-blown reduction stove and described fuming furnace;
To go out from described liquid high lead dross side-blown reduction fire grate and flue gas after recovery waste heat carries out dedusting;
Desulfurization is carried out to the flue gas that have collected after zinc oxide fumes and dedusting; With
Reclaim the waste heat of described sulfur dioxide flue gas, dedusting is carried out to sulfur dioxide flue gas, utilize the sulphur dioxide flue gas acid preparing after dedusting.
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