CN201527170U - Zinc volatilization rotary kiln with energy-saving performance and long service life - Google Patents
Zinc volatilization rotary kiln with energy-saving performance and long service life Download PDFInfo
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- CN201527170U CN201527170U CN2009201118151U CN200920111815U CN201527170U CN 201527170 U CN201527170 U CN 201527170U CN 2009201118151 U CN2009201118151 U CN 2009201118151U CN 200920111815 U CN200920111815 U CN 200920111815U CN 201527170 U CN201527170 U CN 201527170U
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- zinc
- energy
- rotary evaporation
- rotary kiln
- fireclay insulating
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- 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
Abstract
The utility model relates to a zinc volatilization rotary kiln with energy-saving performance and long service life, wherein a fireclay insulating refractory layer (1) is built between a cylindrical steel shell (2) of the volatilization rotary kiln of zinc leached slag or zinc oxide mines and refractory blocks (3) of a working layer. The zinc volatilization rotary kiln has the remarkable advantages of leading the service life of the refractory material of the kiln lining working layer to be prolonged, having no need of replacing the refractory material regularly, prolonging the production cycle, and reducing the cost.
Description
Technical field: the utility model belongs to the rotary evaporation technical field of structures of zinc leaching residue or zinc oxide ore.
Background technology: in the production of zinc, wet method extraction zinc occupies very at high proportion, but behind the wet method extraction zinc, still has oxide or the sulfide of many Zn, Pb etc. in its dilute sulfuric acid leached mud, and this material is referred to as leached mud.Wherein contain zinc at 15%-20%, plumbous at 0.7%-6.0%.The zinc rotary evaporation is the essential production equipment that reclaims the zinc in the leached mud or the zinc in the zinc oxide ore is extracted.China and more external zinc smelteries or non-ferrous metals smelting works all use this zinc rotary evaporation at present.Rotary evaporation is a box hat cylindrical shape rotary kiln.The compound that leached mud or zinc oxide ore and coking coal powder are mixed by a certain percentage enters in the kiln, through entering rotary kiln pyroreaction band after preheating, the drying, pyroreaction band temperature is at 1000 ℃-1350 ℃, carbon and zinc oxide reaction, restore zinc fume, Zn steam enters the condenser deposition, thereby obtains metallic zinc.
The zinc rotary evaporation since reaction zone high temperature at 1000 ℃ to 1350 ℃, furnace charge constantly travels forward and rolls, and violent chemical reaction, the kiln lining refractory material for working layer not only is subjected to the wearing and tearing and the thermal shock of material, also be subjected to the erosion and the infiltration of iron silicon slag and sulfide, make the kiln lining refractory material for working layer life-span very short.Essential periodic replacement had both influenced production, increased cost again.
Summary of the invention: the purpose of this utility model provides a kind of operating period limit for length, the energy-conservation and method that improves zinc rotary evaporation life-span of kiln liner that production cost is low for the above-mentioned defective that overcomes the existence of zinc rotary evaporation just.
The purpose of this utility model is achieved by the following technical solution.
The utility model is built between the rotary evaporation cylindrical shape box hat of zinc leaching residue or zinc oxide ore and working lining refractory brick a fireclay insulating refractory layer.
This fireclay insulating refractory layer of the utility model can be a gas phase continuous structure type, also can be solid phase continuous structure type, also can be that solid phase and gas phase all are the continuous structure type.
The material of this fireclay insulating refractory layer of the utility model is clay matter or AL
2O
3-SiO
2Matter, or quartziferous (comprising vitreous silica or quartz glass) or diatomite, or expanded vermiculite, or expanded perlite, or fly ash float, or silico-calcium matter, or heat insulation or lightweight refracrory such as refractory felt, fire-resistant blanket, calcium silicate board with microporous, asbestos board, the lightweight concrete of the making such as (as asbestos, rock wool, glass fibre, alumina silicate fibre) of various refractory fibre or water material feeding etc.
The thickness of fireclay insulating refractory layer of the present utility model is more than 0.5mm.
Fireclay insulating refractory layer of the present utility model directly is attached on the inwall of rotary kiln cylinder box hat by binding agent.
The beneficial effects of the utility model are that the zinc rotary evaporation is that working lining refractory brick is directly built on cylinder box hat inner surface always.If build by laying bricks or stones in the scheme at the kiln lining of rotary evaporation reaction zone, between cylinder box hat inner surface and working lining refractory brick, add and build one deck fireclay insulating refractory, can make the life-span of former refractory material for working layer of building by laying bricks or stones improve 50% to one times greatly; Even former working lining refractory brick life is 200 days, and after the employing this patent added one deck fireclay insulating refractory, its life-span can reach more than 300 days, even 400 days.
Add the fireclay insulating refractory of building more than one deck 0.5mm and prevented that not only the overheated of reacting in rotary kiln band cylindrical shell box hat and the excessive expansion that produces from causing the distortion of steel cylindrical shell and causing working lining refractory brick brickwork joint in building by laying bricks or stones and using to strengthen and the erosion aggravation; Also reduce simultaneously the interior difference variation of kiln in baking kiln and the production process, thereby reduced thermal spalling and structure spalling and cracking that refractory brick causes because of difference variation.Therefore the zinc rotary evaporation lay bricks build one deck fireclay insulating refractory after, the life-span of its working lining refractory brick can be improved 50% to one times greatly.
After in the zinc rotary evaporation, building one deck fireclay insulating refractory by laying bricks or stones, build working lining refractory brick again, reduced the rotary kiln radiation loss, thereby saved the energy.Owing to built one deck fireclay insulating refractory layer by laying bricks or stones, kiln temperature is relatively stable, has avoided ring formation causes in the kiln trouble and processing effectively.
Working lining refractory brick also requires to want good thermal shock owing to require the erosion and the infiltration of energy high temperature iron silicon slag and sulfide, can be wear-resistant; High quality refractory brick that so the working lining refractory brick of building by laying bricks or stones all is high temperature or superhigh temperature to be burnt till such as high-quality directly in conjunction with magnesite-chrome brick, magnesia-alumina-chromia brick or chromium-aluminium spinel brick etc., its price is very high.And it is all cheaper to increase one deck fireclay insulating refractory layer of building by laying bricks or stones, and thickness is not very thick; Only need when building by laying bricks or stones the fireclay insulating refractory layer is sticked on it on rotary kiln box hat with binding agent, build by laying bricks or stones easily, therefore can not increase too many cost.And the life-span of the very high working lining refractory brick of price can improve 0.5 to 1 times.Therefore from being very to one's profit economically.
It is as follows that the utility model adds the main effect of building a fireclay insulating refractory layer; Reduce rotary kiln box hat surface temperature, reduced the thermal loss that causes owing to heat radiation effectively, but energy savings fuel.
Prevented the overheated barrel distortion that causes with excessive expansion of cylinder of rotary kiln box hat.Overheated and the distortion of box hat cylinder can cause the working lining refractory brick of building by laying bricks or stones loosening, and the brickwork joint between the refractory brick strengthens, and makes easier erosion and the infiltration that is subjected to slag and sulfide of kiln lining, accelerates the refractory brick loss.
Reduce thermal loss, reduced difference variation and fluctuation in the kiln.This just can make peeling off and bursting of the working lining refractory brick that causes greatly because of the reaction zone difference variation in baking kiln and the production process
Ring formation is brought in the kiln trouble and processing have been slowed down effectively.
Further set forth the utility model content below in conjunction with drawings and Examples.
Description of drawings: Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1.
The specific embodiment:
Feature of the present utility model is, building between the rotary evaporation cylindrical shape box hat 2 of zinc leaching residue or zinc oxide ore and working lining refractory brick 3 has a fireclay insulating refractory layer 1.
This fireclay insulating refractory layer 1 of the utility model can be a gas phase continuous structure type, also can be solid phase continuous structure type, also can be that solid phase and gas phase all are the continuous structure type.
The material of this fireclay insulating refractory layer 1 of the utility model may be clay matter or AL
2O
3-SiO
2Matter, or quartziferous (comprising vitreous silica or quartz glass) or diatomite, or expanded vermiculite, or expanded perlite, or fly ash float, or silico-calcium matter, or heat insulation or lightweight refracrory such as refractory felt, fire-resistant blanket, calcium silicate board with microporous, asbestos board, the lightweight concrete of the making such as (as asbestos, rock wool, glass fibre, alumina silicate fibre) of various refractory fibre or water material feeding etc.
The thickness of fireclay insulating refractory layer 1 of the present utility model is more than 0.5mm.
This fireclay insulating refractory layer 1 of the utility model directly is attached on the inwall of rotary kiln cylinder box hat 2 by binding agent.
The utility model rotary evaporation is a box hat cylindrical shape rotary kiln.The compound that leached mud or zinc oxide ore and coking coal powder are mixed by a certain percentage enters in the kiln, through dry zone 4, preheating zone 5, enter rotary kiln pyroreaction band 6 after the drying, pyroreaction band temperature is at 1000 ℃-1350 ℃, carbon and zinc oxide reaction, restore zinc fume, Zn steam enters the condenser deposition of salband 7, thereby obtains metallic zinc.
Embodiment one,
When the zinc rotary evaporation does not adopt the fireclay insulating refractory layer to build by laying bricks or stones, be to be that the working lining refractory brick 3 of chromium-aluminium spinel brick is directly built by laying bricks or stones at reaction zone steel drum body inwall with material, the rotary kiln liner life-span is 218 days.
With thickness is that the clay matter fireclay insulating refractory layer 1 usefulness sodium silicate binder of 45mm directly is pasted on rotary kiln cylinder box hat 2 inwalls, and then builds the chromium-aluminium spinel brick of working lining refractory brick 3, and the rotary kiln liner life-span reaches 380 days.
Embodiment two
When the zinc rotary evaporation does not adopt the fireclay insulating refractory layer, be that the working lining refractory brick 3 of magnesite-chrome brick is directly built by laying bricks or stones at reaction zone steel drum body inwall with material, the rotary kiln liner life-span is 145 days.
With thickness is that the fireclay insulating refractory layer 1 usefulness silica sol binder of 30mm fire-retardent fiber felt-rug is pasted on rotary kiln cylinder box hat 2 inwalls, and then be that the working lining refractory brick 3 of magnesite-chrome brick is directly built at reaction zone steel drum body inwall with material, the rotary kiln liner life-span reaches 235 days.
Embodiment three,
Zinc rotary evaporation reaction zone is not built the fireclay insulating refractory layer, and the working lining refractory brick 3 that direct just material is a magnesia-alumina-chromia brick is built by laying bricks or stones when reaction zone steel drum inwall, and the rotary kiln liner life-span is 198 days
With thickness is that the sticking method agent of fireclay insulating refractory layer 1 usefulness phosphate of 50mm light weight fireclay brick is affixed on cylinder of rotary kiln reaction zone box hat 2 inwalls, and then be that the working lining refractory brick 3 of magnesia-alumina-chromia brick is built by laying bricks or stones when the reaction zone steel drum inwall with material, the rotary kiln liner life-span reaches 308 days.
Claims (4)
1. an energy-conservation and long-life zinc rotary evaporation is characterized in that, building between the rotary evaporation cylindrical shape box hat (2) of zinc leaching residue or zinc oxide and working lining refractory brick (3) has a fireclay insulating refractory layer (1).
2. a kind of energy-conservation and long-life zinc rotary evaporation according to claim 1 is characterized in that, what this fireclay insulating refractory layer (1) adopted is gas phase continuous structure type, or solid phase continuous structure type, or solid phase and gas phase all are the continuous structure type.
3. a kind of energy-conservation and long-life zinc rotary evaporation according to claim 1 is characterized in that the material of this fireclay insulating refractory layer (1) is clay matter or AL
2O
3-SiO
2Matter, or quartziferous or diatomite, or expanded vermiculite, or expanded perlite, or fly ash float, or silico-calcium matter, or various refractory fibre such as asbestos, rock wool, glass fibre, alumina silicate fibre heat insulation or lightweight refracrory such as refractory felt, fire-resistant blanket, calcium silicate board with microporous, asbestos board, the lightweight concrete made or water material feeding.
4. a kind of energy-conservation and long-life zinc rotary evaporation according to claim 1 is characterized in that the thickness of its fireclay insulating refractory layer (1) is more than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201118151U CN201527170U (en) | 2009-08-18 | 2009-08-18 | Zinc volatilization rotary kiln with energy-saving performance and long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201118151U CN201527170U (en) | 2009-08-18 | 2009-08-18 | Zinc volatilization rotary kiln with energy-saving performance and long service life |
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| CN201527170U true CN201527170U (en) | 2010-07-14 |
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| CN2009201118151U Expired - Fee Related CN201527170U (en) | 2009-08-18 | 2009-08-18 | Zinc volatilization rotary kiln with energy-saving performance and long service life |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767830A (en) * | 2012-08-13 | 2012-11-07 | 无锡多灵环保工程设备有限公司 | Garbage incinerator body with high heat-insulating performance |
| CN103225808A (en) * | 2013-04-01 | 2013-07-31 | 长兴县海华化工有限公司 | Incinerator |
| CN105154638A (en) * | 2015-10-22 | 2015-12-16 | 中航卓越锻造（无锡）有限公司 | Hearth structure of normalizing furnace |
| CN109883202A (en) * | 2019-03-27 | 2019-06-14 | 福建德科达环保有限责任公司 | A kind of production method of environment protection type heat insulating kiln |
-
2009
- 2009-08-18 CN CN2009201118151U patent/CN201527170U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767830A (en) * | 2012-08-13 | 2012-11-07 | 无锡多灵环保工程设备有限公司 | Garbage incinerator body with high heat-insulating performance |
| CN103225808A (en) * | 2013-04-01 | 2013-07-31 | 长兴县海华化工有限公司 | Incinerator |
| CN105154638A (en) * | 2015-10-22 | 2015-12-16 | 中航卓越锻造（无锡）有限公司 | Hearth structure of normalizing furnace |
| CN109883202A (en) * | 2019-03-27 | 2019-06-14 | 福建德科达环保有限责任公司 | A kind of production method of environment protection type heat insulating kiln |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20120818 |