CN205556750U - Direct smelting system of while output metallic lead, zinc - Google Patents
Direct smelting system of while output metallic lead, zinc Download PDFInfo
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- CN205556750U CN205556750U CN201620332027.5U CN201620332027U CN205556750U CN 205556750 U CN205556750 U CN 205556750U CN 201620332027 U CN201620332027 U CN 201620332027U CN 205556750 U CN205556750 U CN 205556750U
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Abstract
The utility model relates to a direct smelting system of while output metallic lead, zinc, this system is including two districts oxygen boosting side -blown converter, zinc vapour condenser, cooling chute and plumbous zinc separating tank, two districts oxygen boosting side -blown converter includes smelting zone and fuming district, and the smelting zone lower part is equipped with the siphon and puts plumbous mouthful, and fuming district lower part is equipped with the slag tap, and fuming district furnace roof is equipped with the oblique flue of burner gas export, the oblique flue of zinc vapour condenser and burner gas export is connected, when the zinc fume passes through the zinc vapour condenser along with fuming district burner gas, is become zincy lead liquid by the condensation, zincy lead liquid after the cooling gets into the plumbous zinc separating tank that cools off the chute and link to each other with it in proper order, with zinc liquid and the separation of plumbous liquid. Adopt this system, the raw materials does not need the sintering and the calcination, and process flow shortens by a wide margin, can smelt the very low raw materials of plumbous zinc grade, especially can handle the zinc leached mud, for wet process zinc metallurgy solution environmental issue.
Description
Technical field
The utility model belongs to smelting field of nonferrous metal, the direct smelting system of output metallic lead, the zinc while of being specifically related to a kind of.
Background technology
Mineral products lead with vulcanized lead or zinc sulfide concentrates as raw material, zinc are essentially all separately to be smelted.Lead is smelted main with lead concentrate as raw material, the most substantially uses pyrometallurgical smelting of lead method to produce lead bullion, is then passed through pyro-refining and electrorefining obtains electricity lead.Zinc abstraction is mainly with zinc sulfide concentrates as raw material, and more than 80% production capacity uses wet zinc smelting method to be directly produced electricity zinc.Only closed blast furnace zinc metallurgy method (also known as ISP) can produce lead zinc, simultaneously output lead bullion and crude zinc at same seat stove.
But ISP zinc metallurgy has the defect of several respects: one is vulcanized lead zinc raw material to be sintered roasting, it is impossible to directly enter stove melting.But the technological process baked with agglomeration is the longest, equipment is various, and efficiency is the lowest, more than the 80% of sintered product has to pass through four sections of broken, screenings, returns dispensing, again mixes, pelletizes, sinters, its purpose is to the raw material of sulfur-bearing 25% is diluted to sulfur-bearing about 6%, with the technological requirement of satisfied sintering.Two is that sintering exhaust gas volumn is big, flue gas SO2Concentration is low, is unfavorable for double-absorption technique relieving haperacidity.Three is requirement raw material containing Pb >=20%, Zn >=40%, if need to add oxide ore or leaded zinc miscellaneous material, can not add sintering machine sintering, can not be directly added into blast furnace, needs to suppress agglomerating.Four be that agglomerate is broken, dust pollution is serious in screening process, needs to arrange huge ventilating and purifying air system.Five is not a large amount of collocation or the production practices individually processing zinc leaching residue, it is impossible to solve the environmental issue of Slag treatment for zinc hydrometallurgy.Six is that agglomerate adds retailoring of blast furnace, it is necessary to making reducing agent with coke, coke rate reaches more than 40%, and energy cost is higher.
Utility model content
The purpose of this utility model be to provide a kind of can simultaneously output metallic lead and the direct smelting system of metallic zinc, use this system, raw material need not sintering and roasting, and technological process is greatly shortened；Can the lowest raw material of lead-zinc smelting grade, particularly can process zinc leaching residue, solve environmental issue for zinc hydrometallurgy.
Of the present utility model a kind of while output metallic lead, the direct smelting system of zinc,
This system includes two-region oxygen-enriched side-blowing furnace, zinc vapor condensing device, cooling chute and Pb-Zn separation groove；
Two-region oxygen-enriched side-blowing furnace includes smelting zone and fuming district, and bottom, smelting zone is provided with siphon lead tap, and bottom, fuming district is provided with slag tap, and fuming district furnace roof is provided with the oblique flue of furnace gas export；
Zinc vapor condensing device flue oblique with furnace gas export is connected, and when zinc fume passes through zinc vapor condensing device with fuming district furnace gas, is condensed into zincy lead liquid；
Zincy lead liquid after cooling sequentially enters cooling chute and the Pb-Zn separation groove being attached thereto, and is separated with lead liquid by zinc liquid.
Further, in zinc vapor condensing device, some rotors are set.
Further, cooling chute is provided with serpentine cooler.
Further, also including dispensing adhesive tape conveyor and drum pelletizer, material adds the smelting zone of two-region oxygen-enriched side-blowing furnace after drum pelletizer is pelletized by adhesive tape conveyor.
Further, oxygen-enriched side-blowing furnace smelting zone, described two-region furnace roof is provided with charge door and goes straight up to flue, and smelting zone flue gas enters waste heat boiler, electrostatic precipitator and acid making system by going straight up to flue.
Further, oxygen-enriched side-blowing furnace fuming district, described two-region furnace roof is provided with coal filling hole.
The utility model uses oxygen-enriched air method of smelting, with lead and zinc concentrate, lead Zinc oxide or other secondary (including various slag charges or the flue dust such as zinc leaching residue, steel plant's cigarette ash) Han smelting charge of lead and zinc as raw material in same smelting device, raw material need not bake with agglomeration, with coal as reducing agent, it is directly added into two-region oxygen-enriched side-blowing furnace to smelt, the lead bullion of the most direct leaded Pb >=90% of output and the crude zinc of Zn >=95%.
The crude zinc of output can obtain essence zinc by rectifying, and lead bullion obtains electricity lead by pyro-refining and electrorefining, is obtained product or the semi-finished product of the valuable metals such as gold, silver, copper, antimony, bismuth by ANODE SLIME TREATMENT simultaneously.Slag becomes general industry solid waste through granulation, can be as building materials raw material direct marketing.
Specifically, the utility model has a following beneficial effect:
1) use Pb >=10%, Zn >=20% furnace charge, change existing technological requirement mixture charge Pb >=20%, Zn >=40%.Thus widened raw material sources; can directly process various low-grade smelting charge of lead and zinc, the secondary material of leaded zinc; particularly can arrange in pairs or groups and process various slag charges or the flue dust such as a large amount of zinc leaching residues, steel plant's cigarette ash, harmful solid waste be become innoxious, beneficially environmental protection.
2) low-grade lead zinc raw material direct output metallic lead, zinc can be used, change prior art process low-grade lead zinc raw material and can only produce leaded high secondary zinc oxide, then with sulfuric acid solution, secondary zinc oxide is leached, the solution of zinc sulfate obtained carries out purifying, being electrolysed, leach the leached mud leaded the highest (Pb 20%～30%) produced, lead smelting system must be fed again into and reclaim the Complicated Flow of lead zinc, reach energy-saving and emission-reduction.
3) using coal to make reducing agent and fuel, change the situation that existing lead-zinc smelting technique needs coke to make reducing agent, production cost reduces, it is achieved lead, zinc abstraction without coked production.
4) decrease existing technique lead and zinc concentrate need sintering and back powder to crush, sieve, the series of processes such as granulation, technological process is greatly shortened, and production efficiency significantly improves.
Accompanying drawing explanation
Fig. 1 is two-region of the present utility model oxygen-enriched side-blowing furnace schematic diagram.
Fig. 2 is the utility model smelting system capital equipment connection diagram.
Fig. 3 is the utility model process chart.
Wherein: 1 '-cupola well, 2 '-smelting zone, 3 '-smelting zone charge door, 4 '-Copper Water Jacket partition wall, 5 '-fuming district, 6 '-sealed feeder, 7 '-lead bullion discharge port, 8 '-slag tap, 9 '-furnace roof, bubbling height H1, slag liquid level H2, lead liquid level H3；
1-batch bin, 2-dispensing adhesive tape conveyor, 3-drum pelletizer, oxygen-enriched side-blowing furnace smelting zone, 4-two-region, oxygen-enriched side-blowing furnace fuming district, 5-two-region, 6-zinc vapor condensing device 7-cooling chute, 8-Pb-Zn separation groove, 9-store up zinc groove, 10 dezincification furnace gas dust-precipitators, 11-crude zinc pig moulding machine, 12-lead bullion pig moulding machine, beans C, flue gas G, oxygen-enriched air O.
Detailed description of the invention
As it is shown in figure 1, the two-region oxygen-enriched side-blowing furnace that the utility model uses, body of heater is the fixed body of heater of rectangle, by cupola well 1 ', shaft, furnace roof 9 ' and go straight up to flue and form.Cupola well 1 ' is formed by refractory material laying, and molten bath part is surrounded by outer cover of steel plate.Restoration of lower stack is provided with 2～3 layers of Copper Water Jacket, upper shaft, goes straight up to " sandwich " body of wall that flue is molten steel set or Copper Water Jacket and laying fireproof bricks.Furnace roof 9 ' is molten steel set.
Oxygen-enriched side-blowing furnace shaft is divided into two regions by partition wall 4 ' along its length that constitute with Copper Water Jacket, is called smelting zone 2 ' and fuming district 5 ', and cupola well 1 ' is interconnected.Smelting zone 2 ' furnace roof is provided with charge door 3 ' and goes straight up to flue, goes straight up to flue and is connected with waste heat boiler.Bottom, smelting zone 2 ' is provided with siphon lead tap (7 ').Fuming district 5 ' furnace roof is provided with coal filling hole and the oblique flue of furnace gas export, and oblique flue is connected with zinc vapor condensing device 6.Bottom, fuming district 5 ' is provided with slag tap 8 '.
As shown in Figure 2, it is achieved the capital equipment of the utility model lead zinc direct smelting process includes batch bin 1, dispensing adhesive tape conveyor 2, drum pelletizer 3, two-region oxygen-enriched side-blowing furnace, zinc vapor condensing device 6, cooling chute 7, Pb-Zn separation groove 8, storage zinc groove 9, dezincification furnace gas dust-precipitator 10, crude zinc pig moulding machine 11, lead bullion pig moulding machine 12.
Multiple batch bin 1 is had, in order to lead and zinc concentrate, lead Zinc oxide, other leaded zinc secondary material, flux, coal grain are loaded respective batch bin 1 according to material kind quantity.Batch bin 1 is arranged below weigher (generally electronic belt), for dispensing according to a certain percentage, dispensing adhesive tape conveyor 2 is delivered to drum pelletizer 3 and pelletizes.Granulation furnace charge adds the smelting zone 4 of two-region oxygen-enriched side-blowing furnace by adhesive tape conveyor 2.
Zinc vapor condensing device 6 is formed by refractory material laying, is provided with several rotors.Cooling chute 7 is formed by refractory material laying, is provided with cooling zincy lead liquid serpentine cooler.Pb-Zn separation groove 8 is formed by refractory material laying, for lead zinc clarified separation.
The utility model output metallic lead, the direct smelting process of zinc simultaneously, comprise the following steps:
(1) lead and zinc concentrate, lead Zinc oxide and/or other leaded zinc secondary material (including various slag charges or the flue dust such as zinc leaching residue, steel plant's cigarette ash) and a small amount of flux are carried out dispensing, mixes, pelletize, require furnace charge Pb >=10%, Zn >=20%, it is 10～20mm particles that mixture charge makes granularity, and moisture controls below 15%.When furnace charge without or containing flammable sulphur inadequate time, need to allocate a small amount of beans into as fuel.The flux amount of allocating into calculates according to charge composition and slag type, and the coal amount of allocating into calculates according to thermal balance and furnace atmosphere.
(2) the furnace charge adhesive tape conveyor 2 after pelletizing adds the smelting zone 4 of two-region oxygen-enriched side-blowing furnace, blast oxygen-enriched air by tuyere and carry out oxygen-enriched air smelting, control weak reducing atmosphere, coefficient of excess air determines according to charge composition, holding smelting zone is tiny structure, temperature 1150～1250 DEG C (under guaranteeing material melting, slag fluidity good condition, reduce temperature as far as possible).
Series of chemical, output lead bullion and the high zinc furnace cinders such as furnace charge aoxidizes in smelting zone, desulfurization, slag making, reduction.The valuable metals such as copper, gold, silver, bismuth, antimony be enriched in bottom molten bath formed metallic lead mutually in.Lead bullion liquid overflows from siphon lead tap automatically according to melt pressure in stove, obtains the lead bullion of leaded grade more than 93%, flows into lead bullion pig moulding machine 12 and casts base-bullion or flow directly into rectification systems.Melting flue gas contains SO2Gas, after waste heat boiler cooling, electrostatic precipitator dedusting, is sent to acid making system.High zinc furnace cinder enters fuming district 5 by the passage below oxygen-enriched side-blowing furnace partition wall.
(3) beans of granularity 15～20mm needed for zinc reduces is added by band double beat valve door sealing feeder 6 ' to fuming district 5, keep fuming district airtight and be in slight positive pressure state, oxygen-enriched air is blasted by tuyere, controlling fuming district is strong reducing property atmosphere, temperature 1250～1350 DEG C, the beneficially reduction volatilization of zinc.Oxygen-rich concentration calculates according to composition of fumes and determines, wherein zinc fume 6%～8%, CO 20%～24%(volume).
(4) zinc oxide reduction in slag becomes zinc fume to enter zinc vapor condensing device 6 with furnace gas (including lead steam), condenser is pre-filled with liquid lead, lead liquid is kicked up by the rotor in zinc vapor condensing device 6, the lead liquid that zinc fume is kicked up is cooled to zinc liquid, mix with lead liquid, form zincy lead liquid.Zincy lead liquid temp raises, and needs to flow into cooling chute 7 and cools down.Utilize zinc liquid in lead liquid solubility with temperature change and change and the characteristic of zinc liquid and lead liquid density variation, zincy lead liquid flow enters to cool down chute 7 and Pb-Zn separation groove 8 cools down, and zinc liquid separates with lead liquid, obtains the crude zinc containing zinc grade more than 96%.Zinc liquid enters storage zinc groove 9, then uses crude zinc pig moulding machine 11 to be cast into crude zinc ingot.Lead liquid returns zinc vapor condensing device 6.
Dezincification furnace gas gathers dust and boosting obtains a kind of low-heat value gas through dust-precipitator 10, can be as dry furnace charge or the fuel of preheated air.Accept flue dust and return dispensing.
According to melt height in charging rate and stove, periodically from slag tap 8 ' slagging, slag is directly granulated.
Claims (6)
1. simultaneously output metallic lead, the direct smelting system of zinc, it is characterised in that:
This system includes two-region oxygen-enriched side-blowing furnace, zinc vapor condensing device, cooling chute and Pb-Zn separation groove；
Two-region oxygen-enriched side-blowing furnace includes smelting zone and fuming district, and bottom, smelting zone is provided with siphon lead tap, and bottom, fuming district is provided with slag tap, and fuming district furnace roof is provided with the oblique flue of furnace gas export；
Zinc vapor condensing device flue oblique with furnace gas export is connected, and when zinc fume passes through zinc vapor condensing device with fuming district furnace gas, is condensed into zincy lead liquid；
Zincy lead liquid after cooling sequentially enters cooling chute and the Pb-Zn separation groove being attached thereto, and is separated with lead liquid by zinc liquid.
The direct smelting system of output metallic lead, zinc while the most according to claim 1, it is characterised in that some rotors are set in zinc vapor condensing device.
The direct smelting system of output metallic lead, zinc while the most according to claim 1, it is characterised in that cooling chute is provided with serpentine cooler.
The direct smelting system of output metallic lead, zinc while the most according to claim 1, it is characterised in that also include dispensing adhesive tape conveyor and drum pelletizer, material adds the smelting zone of two-region oxygen-enriched side-blowing furnace after drum pelletizer is pelletized by adhesive tape conveyor.
The direct smelting system of output metallic lead, zinc while the most according to claim 1, it is characterized in that oxygen-enriched side-blowing furnace smelting zone, described two-region furnace roof is provided with charge door and goes straight up to flue, smelting zone flue gas enters waste heat boiler, electrostatic precipitator and acid making system by going straight up to flue.
The direct smelting system of output metallic lead, zinc while the most according to claim 1, it is characterised in that oxygen-enriched side-blowing furnace fuming district, described two-region furnace roof is provided with coal filling hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620332027.5U CN205556750U (en) | 2016-04-20 | 2016-04-20 | Direct smelting system of while output metallic lead, zinc |
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| CN201620332027.5U CN205556750U (en) | 2016-04-20 | 2016-04-20 | Direct smelting system of while output metallic lead, zinc |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105671314A (en) * | 2016-04-20 | 2016-06-15 | 长沙有色冶金设计研究院有限公司 | Direct smelting method and system for producing metallic lead and zinc at the same time |
| CN109306407A (en) * | 2018-11-21 | 2019-02-05 | 山西于斯为盛环保科技有限公司 | A kind of device and method that metallurgy dedusting ash containing zinc is administered and utilized |
| CN110129583A (en) * | 2019-05-31 | 2019-08-16 | 中国恩菲工程技术有限公司 | Pyrometallurgy of zinc system |
| CN111351356A (en) * | 2020-04-27 | 2020-06-30 | 内蒙古兴安银铅冶炼有限公司 | Novel fuming furnace body |
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2016
- 2016-04-20 CN CN201620332027.5U patent/CN205556750U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105671314A (en) * | 2016-04-20 | 2016-06-15 | 长沙有色冶金设计研究院有限公司 | Direct smelting method and system for producing metallic lead and zinc at the same time |
| CN109306407A (en) * | 2018-11-21 | 2019-02-05 | 山西于斯为盛环保科技有限公司 | A kind of device and method that metallurgy dedusting ash containing zinc is administered and utilized |
| CN109306407B (en) * | 2018-11-21 | 2024-01-19 | 山西于斯为盛环保科技有限公司 | Device and method for treating and utilizing metallurgical zinc-containing dust |
| CN110129583A (en) * | 2019-05-31 | 2019-08-16 | 中国恩菲工程技术有限公司 | Pyrometallurgy of zinc system |
| CN110129583B (en) * | 2019-05-31 | 2024-02-27 | 中国恩菲工程技术有限公司 | Fire zinc smelting system |
| CN111351356A (en) * | 2020-04-27 | 2020-06-30 | 内蒙古兴安银铅冶炼有限公司 | Novel fuming furnace body |
| CN111351356B (en) * | 2020-04-27 | 2021-01-15 | 内蒙古兴安银铅冶炼有限公司 | Fuming furnace body |
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