CN103591805A - Ring type roasting furnace cover and manufacturing method thereof - Google Patents
Ring type roasting furnace cover and manufacturing method thereof Download PDFInfo
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- CN103591805A CN103591805A CN201310580685.7A CN201310580685A CN103591805A CN 103591805 A CN103591805 A CN 103591805A CN 201310580685 A CN201310580685 A CN 201310580685A CN 103591805 A CN103591805 A CN 103591805A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The invention provides a ring type roasting furnace cover which is mainly applied to ring type roasting furnaces in the carbon industry. The ring type roasting furnace cover comprises an arch body arranged on a steel structural framework, and a heat preservation layer composited on the arch body, wherein the arch body is built through a plurality of light special refractory bricks. The ring type roasting furnace cover is characterized in that the heat preservation layer comprises an alumina silicate fiber layer, a metal screen and a sealing layer, the alumina silicate fiber layer is an alumina silicate fiber blanket, the sealing layer comprises light refractory aggregates, light fire-proof powder, granularity perlite, cement, asbestos wool, polyacrylamide, fibrin, bentonite and an appropriate amount of water, and a manufacturing method of the ring type roasting furnace cover is provided. The ring type roasting furnace cover has the advantages of being reasonable in structure, good in sealing performance, high in refractoriness and erosion resistance, good in heat preservation effect, obvious in energy saving effect, low in cost, long in service life and the like.
Description
Technical field
The present invention relates to ring-form calcining furnace, specifically, is ring-form calcining furnace bell of using of a kind of carbon industry graphite product heat treatment and preparation method thereof.
Background technology
Ring-form calcining furnace is one of main Thermal Equipment of charcoal element production, belong to high energy consumption industrial furnace equipment, generally all build by laying bricks or stones underground, only have bell to be exposed on the ground, bell is comprised of steel structure framework and refractory material, in actual production use procedure, bell hot face temperature reaches more than 140 ℃, and heat loss is larger.
In recent years, especially after 2005, along with exploitation and the application of new material, new technology, the advantage such as roaster bell is most to be adopted ceramic fiber module anchoring to install to be made, to have thermal conductivity factor little, and unit weight is low, and heat energy loss is little, but disposable cost is higher; And before 2005, roaster bell is substantially all to adopt fire-resistant light clay brick to build by laying bricks or stones to form, most domestic Tan Su enterprise is still being used so far, its advantage is that cost is low, easy construction, but shortcoming is that refractory brick thermal conductivity factor is higher, and increase with the rising of furnace chamber temperature, in long term high temperature use procedure,, there is gap in refractory brick contraction distortion, causes the loss of furnace chamber negative pressure larger each other, thermal losses is more, causes energy excess waste.
Therefore, carbon industry is constantly groped the construction technology of ring-form calcining furnace bell, constantly brings forth new ideas, taked series of measures to be incubated processing to it, what adopt the earliest is to cover on light-weight brick with diatomite brick, and advantage is that weight is lighter, and density is 0.5g/ ㎝
3, but globality is poor, poor sealing, and now superseded; Next is to adopt lightening casting material evenly to smear on refractory brick surface, and advantage is that globality is better, uses initial stage bell thermal-insulating sealing also better, but the variation repeatedly along with production temperature height, castable thermal shock resistance is poor, and the phenomenon such as occur ftractureing, coming off, does not reach heat insulation effect; At present, the heat preserving mode that ring-form calcining furnace bell is conventional, be to adopt quality silicate composite thermo-insulating coating to smear covering on refractory brick surface, it is comprised of refractory fibre powder, additive, binding agent etc., and heat insulation effect is better, but it is lower that shortcoming is intensity, charcoal element production industry dust is larger, need to often clean, and quality silicate composite thermo-insulating material successively comes off in cleaning, use procedure, need regular repairing, service life is shorter.
Summary of the invention
The object of the invention is, overcome the deficiencies in the prior art, provide a kind of rational in infrastructure, good seal performance, refractoriness and corrosion resistance ability are strong, and heat insulation effect is good, and energy-saving effect is obvious, and cost is low, the ring-form calcining furnace bell of long service life; And provide its preparation method.
The technical scheme that realizes the object of the invention employing is, a kind of ring-form calcining furnace bell, it comprises that steel structure framework is equipped with ogive, composite heat-insulating layer on described ogive, described ogive is built by laying bricks or stones and is formed by some lightweight heterotypic fire bricks, it is characterized in that, described heat-insulation layer comprises alumina silicate fibre layer, metallic sieve and sealant; Described alumina silicate fibre layer is alumina silicate fibre blanket, described sealant comprises by the raw material of quality component and carries out proportioning, and 100 parts, the light-weight refractory aggregate of granularity 1～5mm, 100 parts of the light-weight refractory powders of granularity >0～1mm, 85～100 parts of the perlites of granularity 3mm, 230～235 parts of cement, 65～70 parts of asbestos wools, 4～6 parts of polyacrylamides, 4～6 parts of celluloses, 15～20 parts of bentonites, water are appropriate.
A preparation method for ring-form calcining furnace bell, is characterized in that, it comprises the following steps:
1) steel structure framework is placed in ground grading, on steel structure framework, the traditional masonry way that adopt mutual snap close, mutually pushes, builds some lightweight heterotypic fire bricks by laying bricks or stones and is ogive;
2) on ogive, cover the alumina silicate fibre blanket that 20mm is thick and form alumina silicate fibre layer;
3) on alumina silicate fibre layer, place the metallic sieve of string diameter 1mm;
4) on metallic sieve, smear the sealant that 30 ㎜ are thick, sealant carries out proportioning by the raw material of quality component, 100 parts, the light-weight refractory aggregate of granularity 1～5mm, 100 parts of the light-weight refractory powders of granularity >0～1mm, 85～100 parts of the perlites of granularity 3mm, 230～235 parts of cement, 65～70 parts of asbestos wools, 4～6 parts of polyacrylamides, 4～6 parts of celluloses, 15～20 parts of mixing of bentonite, uniform stirring is made mixed dry material, in mixed dry material, add suitable quantity of water, uniform stirring is expected in the pasty state again, pasty state material is spread upon on metallic sieve, at room temperature, within dry 36～48 hours, solidify, form sealant,
5) the pasty state material immersion sieve screen apertures of metallic sieve of formation sealant and the micropore of alumina silicate fibre layer are in ogive surface, and when pasty state material sealant dry solidification, sealant, metallic sieve and alumina silicate fibre layer, ogive are fixed into and are integrated.
Ring-form calcining furnace bell of the present invention, because heat-insulation layer comprises the structure that alumina silicate fibre layer, metallic sieve and sealant are connected, alumina silicate fibre layer adopts alumina silicate fibre blanket; Sealant adopts and carries out in right amount proportioning by 100 parts of the light-weight refractory powders of 100 parts, the light-weight refractory aggregate of quality component granularity 1～5mm, granularity >0～1mm, 85～100 parts of the perlites of granularity 3mm, 230～235 parts of cement, 65～70 parts of asbestos wools, 4～6 parts of polyacrylamides, 4～6 parts of celluloses, 15～20 parts of bentonites, water, uniform stirring expects to spread upon on metallic sieve in the pasty state, at room temperature, dry solidifying to form for 36～48 hours; The pasty state material that can make to form sealant immerses the sieve screen apertures of metallic sieve and the micropore of alumina silicate fibre layer in ogive surface, when pasty state material sealant dry solidification, sealant, metallic sieve and alumina silicate fibre layer, ogive are fixed into and are integrated, because selection material is reasonable, rational in infrastructure, therefore make the good seal performance of ring-form calcining furnace bell, refractoriness and corrosion resistance ability are strong, and heat insulation effect is good, cost is low, long service life; The good manufacturability of its preparation method, make the making easy-formation of ring-form calcining furnace bell, and quality is good.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of ring-form calcining furnace bell;
Fig. 2 is I enlarged diagram in Fig. 1.
The specific embodiment
Utilize drawings and Examples below, the invention will be further described.
See figures.1.and.2, a kind of ring-form calcining furnace bell of the present invention, comprising: on steel structure framework 1, be equipped with ogive 2, and composite heat-insulating layer 3 on described ogive 2, described ogive 2 is built by laying bricks or stones and is formed by some lightweight heterotypic fire bricks 4.Described heat-insulation layer 3 comprises alumina silicate fibre layer 5, metallic sieve 6 and sealant 7.Described alumina silicate fibre layer 5 is alumina silicate fibre blanket, described sealant 7 comprises by the raw material of quality component and carries out proportioning, and 100 parts, the light-weight refractory aggregate of granularity 1～5mm, 100 parts of the light-weight refractory powders of granularity >0～1mm, 85～100 parts of the perlites of granularity 3mm, 230～235 parts of cement, 65～70 parts of asbestos wools, 4～6 parts of polyacrylamides, 4～6 parts of celluloses, 15～20 parts of bentonites, water are appropriate.
The preparation method that realizes a kind of ring-form calcining furnace bell of the present invention, comprises the following steps:
1) steel structure framework 1 is placed in ground grading, on steel structure framework 1, the traditional masonry way that adopt mutual snap close, mutually pushes, builds some lightweight heterotypic fire bricks 4 by laying bricks or stones and is ogive 2, strengthens refractoriness and corrosion resistance;
2) on ogive 2, cover the alumina silicate fibre blanket that 20mm is thick and form alumina silicate fibre layer 5, mutual seam crossing close proximity, good airproof performance, unit weight is low, and thermal conductivity factor is little;
3) on alumina silicate fibre layer 5, place the metallic sieve 6 of string diameter 1mm, aperture 10 ㎜ * 10 ㎜, play the effect that strengthens anti-folding and compressive resistance;
4) on metallic sieve 6, smear the sealant 7 that 30 ㎜ are thick, sealant 7 carries out proportioning by the raw material of quality component, 100 parts, the light-weight refractory aggregate of granularity 1～5mm, 100 parts of the light-weight refractory powders of granularity >0～1mm, 85～100 parts of the perlites of granularity 3mm, 230～235 parts of cement, 65～70 parts of asbestos wools, 4～6 parts of polyacrylamides, 4～6 parts of celluloses, 15～20 parts of mixing of bentonite, uniform stirring is made mixed dry material, in mixed dry material, add suitable quantity of water, uniform stirring is expected in the pasty state again, pasty state material is spread upon on metallic sieve 6, at room temperature, within dry 36～48 hours, solidify, form sealant 7, sealant 7 thermal conductivity factors are low, sealing, high insulating effect,
5) the pasty state material immersion sieve screen apertures of metallic sieve 6 of formation sealant 7 and the micropore of alumina silicate fibre layer 5 are in ogive 2 surfaces, when pasty state material sealant 7 dry solidification, sealant 7, metallic sieve 6 and alumina silicate fibre layer 7, ogive 2 are fixed into and are integrated, make ring-form calcining furnace bell, the overall mechanical strength of ring-form calcining furnace bell is high, compression strength >43KPa, refractoriness >=1300 ℃, long service life, high insulating effect.
Describe specific embodiment below in detail:
Embodiment 1: sealant 7 is prepared burden by quality Dan Wei ㎏, perlite 85 ㎏ of light-weight refractory powder 100 ㎏, the granularity 3mm of light-weight refractory aggregate 100 ㎏, the granularity >0～1mm of granularity 1～5mm, cement 230 ㎏, asbestos wool 65 ㎏, polyacrylamide 4 ㎏, cellulose 4 ㎏, bentonite 15 ㎏, make mixed dry material through mixing and uniform stirring.During use, in mixed dry material, add appropriate water to make pasty state material.
Embodiment 2: sealant 7 is prepared burden by quality Dan Wei ㎏, perlite 93 ㎏ of light-weight refractory powder 100 ㎏, the granularity 3mm of light-weight refractory aggregate 100 ㎏, the granularity >0～1mm of granularity 1～5mm, cement 232 ㎏, asbestos wool 67 ㎏, polyacrylamide 5 ㎏, cellulose 5 ㎏, bentonite 18 ㎏.
Embodiment 3: sealant 7 is prepared burden by quality Dan Wei ㎏, perlite 100 ㎏ of light-weight refractory powder 100 ㎏, the granularity 3mm of light-weight refractory aggregate 100 ㎏, the granularity >0～1mm of granularity 1～5mm, cement 235 ㎏, asbestos wool 70 ㎏, polyacrylamide 6 ㎏, cellulose 6 ㎏, bentonite 20 ㎏.
Embodiment 4: sealant 7 is prepared burden by quality Dan Wei ㎏, perlite 90 ㎏ of light-weight refractory powder 100 ㎏, the granularity 3mm of light-weight refractory aggregate 100 ㎏, the granularity >0～1mm of granularity 1～5mm, cement 233 ㎏, asbestos wool 69 ㎏, polyacrylamide 6 ㎏, cellulose 6 ㎏, bentonite 17 ㎏.
Embodiment 5: sealant 7 is prepared burden by quality Dan Wei ㎏, perlite 96 ㎏ of light-weight refractory powder 100 ㎏, the granularity 3mm of light-weight refractory aggregate 100 ㎏, the granularity >0～1mm of granularity 1～5mm, cement 234 ㎏, asbestos wool 66 ㎏, polyacrylamide 5 ㎏, cellulose 6 ㎏, bentonite 19 ㎏.
Embodiment 6: sealant 7 is prepared burden by quality Dan Wei ㎏, perlite 98 ㎏ of light-weight refractory powder 100 ㎏, the granularity 3mm of light-weight refractory aggregate 100 ㎏, the granularity >0～1mm of granularity 1～5mm, cement 235 ㎏, asbestos wool 68 ㎏, polyacrylamide 5 ㎏, cellulose 5 ㎏, bentonite 16 ㎏.
Lightweight heterotypic fire brick of the present invention, alumina silicate fibre blanket are commercially available prod.The light-weight refractory aggregate, light-weight refractory powder, cement, asbestos wool, polyacrylamide, cellulose and the bentonite that form sealant 7 are finished product raw material, are the commercially available prod very widely of originating.Cement selects 425#, 525# all can; The granularity of described light-weight refractory aggregate is 1～5mm; The granularity of described light-weight refractory powder is >0～1mm, all production and sales such as Suzhou Jin Xingyuantong new material Co., Ltd, sky, Zibo Hongxin Materials Co., Ltd.
Light-weight refractory aggregate of the present invention and light-weight refractory powder principal item have clayey, High-Alumina, mullite, and this material has the advantages that unit weight is light, intensity is high, high temperature resistant and heat-proof quality is good.
Light-weight refractory aggregate of the present invention and light-weight refractory powder technical performance index
Ring-form calcining furnace bell compliance test result of the present invention and economic analysis:
Ring-form calcining furnace bell of the present invention has effectively been avoided the shortcoming of traditional roaster bell, and practical stronger, integral heat insulation successful, according to on-the-spot actual measurement before and after insulation, bell surface temperature, the bell surface temperature that high temperature and the more common light-weight brick of inferior high temperature furnace chamber are built by laying bricks or stones on average reduces approximately 35 ℃, reduce furnace chamber thermal loss, strengthen heat exchange in stove, reduce energy resource consumption, fuel cost and production cost are saved.
According to ring-form calcining furnace bell preparation method of the present invention, can be directly used in the technological transformation of the roaster bell that traditional lightweight special form brick builds by laying bricks or stones, after former bell outer surface cleaning is clean, 2-5 step by ring-form calcining furnace bell preparation method of the present invention is constructed, thereby obtain novel ring-form calcining furnace bell, not only easy construction, and cost is lower, only 3000 yuan of the totle drilling costs of each bell transformation.Domestic Tan Su enterprise ring-form calcining furnace on average calculates by moving 20 bells on 30 furnace chambers, stove, 60,000 yuan of every ring-form calcining furnace bell technological transformation totle drilling costs, through theory, calculate, on former bell basis, only need 60,000 yuan of one-time investments, just can transform an old-fashioned roaster bell and become ring-form calcining furnace bell of the present invention, every stove is at least 15 ten thousand yuan every year of expenses capable of saving fuel just.
Claims (2)
1. a ring-form calcining furnace bell, it comprises that steel structure framework is equipped with ogive, composite heat-insulating layer on described ogive, and described ogive is built by laying bricks or stones and is formed by some lightweight heterotypic fire bricks, it is characterized in that, described heat-insulation layer comprises alumina silicate fibre layer, metallic sieve and sealant; Described alumina silicate fibre layer is alumina silicate fibre blanket, described sealant comprises by the raw material of quality component and carries out proportioning, and 100 parts, the light-weight refractory aggregate of granularity 1～5mm, 100 parts of the light-weight refractory powders of granularity >0～1mm, 85～100 parts of the perlites of granularity 3mm, 230～235 parts of cement, 65～70 parts of asbestos wools, 4～6 parts of polyacrylamides, 4～6 parts of celluloses, 15～20 parts of bentonites, water are appropriate.
2. the preparation method of a kind of ring-form calcining furnace bell according to claim 1, is characterized in that, it comprises the following steps:
1) steel structure framework is placed in ground grading, on steel structure framework, the traditional masonry way that adopt mutual snap close, mutually pushes, builds some lightweight heterotypic fire bricks by laying bricks or stones and is ogive;
2) on ogive, cover the alumina silicate fibre blanket that 20mm is thick and form alumina silicate fibre layer;
3) on alumina silicate fibre layer, place the metallic sieve of string diameter 1mm;
4) on metallic sieve, smear the sealant that 30 ㎜ are thick, sealant carries out proportioning by the raw material of quality component, 100 parts, the light-weight refractory aggregate of granularity 1～5mm, 100 parts of the light-weight refractory powders of granularity >0～1mm, 85～100 parts of the perlites of granularity 3mm, 230～235 parts of cement, 65～70 parts of asbestos wools, 4～6 parts of polyacrylamides, 4～6 parts of celluloses, 15～20 parts of mixing of bentonite, uniform stirring is made mixed dry material, in mixed dry material, add suitable quantity of water, uniform stirring is expected in the pasty state again, pasty state material is spread upon on metallic sieve, at room temperature, within dry 36～48 hours, solidify, form sealant,
5) the pasty state material immersion sieve screen apertures of metallic sieve of formation sealant and the micropore of alumina silicate fibre layer are in ogive surface, and when pasty state material sealant dry solidification, sealant, metallic sieve and alumina silicate fibre layer, ogive are fixed into and are integrated.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN110940191A (en) * | 2019-12-12 | 2020-03-31 | 上海电气上重铸锻有限公司 | Electric furnace lid center piece and material thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110940191A (en) * | 2019-12-12 | 2020-03-31 | 上海电气上重铸锻有限公司 | Electric furnace lid center piece and material thereof |
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| CN103591805B (en) | 2015-06-24 |
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Effective date of registration: 20160128 Address after: 132002 Heping Street, Changyi District, Jilin, China, No. 9, No. Patentee after: Jilin Carbon Co., Ltd. Address before: 132001 Jilin carbon Limited by Share Ltd, Sinosteel group 9, Heping Street, Changyi District, Jilin, Jilin Patentee before: Jilin Carbon Co., Ltd. of Zhonggang Group |