CN104446546B - A kind of steel mill solid waste that comprehensively utilizes prepares the method without asbestos water-proof fire-retardant thistle board - Google Patents

A kind of steel mill solid waste that comprehensively utilizes prepares the method without asbestos water-proof fire-retardant thistle board Download PDF

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Publication number
CN104446546B
CN104446546B CN201410706067.7A CN201410706067A CN104446546B CN 104446546 B CN104446546 B CN 104446546B CN 201410706067 A CN201410706067 A CN 201410706067A CN 104446546 B CN104446546 B CN 104446546B
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China
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water
asbestos
thistle board
retardant
proof fire
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Expired - Fee Related
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CN201410706067.7A
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CN104446546A (en
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曹钊
曹永丹
董红娟
张金山
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Inner Mongolia University of Science and Technology
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Inner Mongolia University of Science and Technology
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Abstract

The purpose of the present invention comprehensively utilizes the steel mill solid waste preparation method without asbestos water-proof fire-retardant thistle board for providing a kind of, the method is adjusted to the setting ratio of mud by raw material by several mixing and water adding of proportioning and stirs the processing technology routine that die-filling pressing mold molding precuring demoulding steam press maintenance dries, make full use of in different industrial waste due to composition, prepare and meet national standard JC/T? 564.2 the thistle board product of water-proof fire-retardant without asbestos of regulation fifth class prescription, product has high intensity, high water-fast, prevent fires and without advantages such as asbestos, may replace the Thistle board used in the market and asbestos fibre strengthens calcium silicate board as indoor hardware fitting, and more durable and environmental protection. three kinds of raw materials of the present invention are all the industrial waste of steel mill discharge, and domestic and international iron and steel enterprise can be facilitated to adopt the technology of the present invention to found the factory on the spot, are possible not only to the pollution reducing Industrial Solid Waste discharge to environment, moreover it is possible to play the economic and social benefit turned waste into wealth.

Description

A kind of steel mill solid waste that comprehensively utilizes prepares the method without asbestos water-proof fire-retardant thistle board
Technical field
The present invention relates to a kind of using industrial solid waste preparation method without the fire-resistant moistureproof Light trabs of asbestos, particularly comprehensively utilize useful component preparation in the Industrial Solid Wastes such as blast furnace slag, flyash and desulfurated plaster and, without the method for the fire-resistant moistureproof Light trabs of asbestos, belong to industrial waste field of comprehensive utilization.
Background technology
Along with iron and steel and electric power industry development, the industrial waste discharge capacitys such as blast-furnace cinder, desulfurated plaster and flyash will increase year by year, the industrial waste accumulated over a long period will have a strong impact on environment and the land resource of locality, therefore Industrial Solid Waste utilization rate is improved, it is achieved china natural resources and environment are all had great importance by waste resource comprehensive utilization.
Current interior decoration plate is mainly Thistle board and calcium silicate board two kinds, and wherein Thistle board has the defects such as not water-fast, rupture strength is low, there is easy water erosion, equivalent risk easy to fall off as indoor suspended ceiling material; Calcium silicate board mainly adopts the additional paper fiber of quartz sand, quick lime and mineral fibres to make, and has the advantages such as water-fast, high intensity, but due to problems such as cost are high, construction is difficult, cause that marketing is difficult compared with Thistle board.
The present invention utilizes the industrial solid wastes preparations such as blast furnace slag, flyash and desulfurated plaster without the fire-resistant moistureproof Light trabs of asbestos, give full play to the synergism between different solid waste, produce and obtain meeting the construction material of national standard, not only can realize the comprehensive utilization of industrial solid wastes, moreover it is possible to reduce the solid waste discharge pollution to environment.
Summary of the invention
The industrial solid wastes such as blast furnace slag, flyash and desulfurated plaster and cement are mixed by the present invention according to a certain percentage, and mix a small amount of paper fiber and sepiolite fibre, under certain ratio of mud fully after the molding of mixing-pressing mold, prepare finishing water-proof fire-retardant Light trabs by still kettle steam press maintenance.
Technical scheme
The inventive method step is as follows:
(1) material dry weight percent is pressed without asbestos water-proof fire-retardant thistle board raw material: blast furnace slag 35-45%, flyash 5-15%, desulfurated plaster 15-25%, cement 15-25%, paper fiber 2-4%, sepiolite fibre 6-8%, wherein blast furnace slag, flyash and desulfurated plaster are all smeltery's discharge solid waste;
(2) take raw material according to ratio in (1) and add up to weight after 800g(moisture removal), add in blender, mix a certain amount of water again, water/gray scale is adjusted to 0.3-0.4, first stir 2 minutes with 140 revs/min, stop stirring 20s, adhesion raw material on wall is linked in groove, then with 280 revs/min of quick stirring 2min;
(3) raw material being stirred in (2) is shoveled in the ferrum die trial shown in accompanying drawing 2 of (length, width and height) 160 �� 160 �� 10mm with little spades, shovel limit, limit tamper fully consolidates the raw material at die trial surrounding and middle part, after being filled to die trial 11mm graduation mark (the extruding thickness of reserved 1mm), die trial lid being built and tightened die trial surrounding clamping screw, whole die-filling process need to complete in 3 minutes;
(4) die trial installed in (3) is kept 3-6 minute with the pressure of 20-30Mpa under hydraulic press, after molding, take out holding chamber warming middle-JIAO precuring 6-12 hour;
(5) idiosome that will complete precuring in (4) takes out, be placed in steaming oxygen still pressure 1.05-1.08MPa, temperature 170-190 DEG C when steam press maintenance 8-16 hour;
(6) plate completing steam press maintenance in (5) is taken out, dry 4-6 hour with the temperature of 50-70 DEG C in drying baker, obtain without asbestos water-proof fire-retardant thistle board product.
The thickness of the thistle board product of water-proof fire-retardant without asbestos can be controlled with briquetting pressure in (4) by work loading height in adjustment (2), and product thickness adjustable extent is 5-12mm.
The invention have the characteristics that the present invention is with blast furnace slag, the Industrial Solid Waste such as flyash and desulfurated plaster and cement are primary raw material, and allocate a small amount of paper fiber and sepiolite fibre into, manufacture out without asbestos water-proof fire-retardant thistle board product, meet the indices requirement of national standard, product has high intensity, high water-fast, prevent fires and without advantages such as asbestos, may replace the Thistle board used in the market and asbestos fibre strengthens calcium silicate board as indoor hardware fitting, and more durable and environmental protection, adopt inventive technique, the Industrial Solid Waste discharge pollution to environment can not only be reduced, the economic and social benefit turned waste into wealth can also be played.
Accompanying drawing explanation
Fig. 1 is the present invention flow sheet without asbestos water-proof fire-retardant thistle board;
Fig. 2 (a) is the plan structure figure of ferrum test die;
Fig. 2 (b) is the side block diagram of ferrum test die.
Detailed description of the invention
Embodiment
Blast furnace slag, flyash and desulfurated plaster take from BAOGANG GROUP smeltery, and its chemical composition and physical property are as shown in table 1.
The chemical composition of 1 three kinds of solid wastes of table and physical property (%)
Solid waste SiO2 Al2O3 CaO Fe2O3 MgO SO3 TiO2 Proportion Specific surface area (m2/g) -75 ��m of content
Blast furnace slag 31.14 10.74 34.78 1.45 10.36 3.61 1.78 2.91 0.75 43.2
Flyash 50.23 34.06 6.04 4.57 1.06 1.03 1.46 2.25 0.95 68.7
Desulfurated plaster 5.63 1.19 39.28 0.38 1.05 46.75 0.06 2.11 2.49 86.5
Cement is compound 32.5 class g cement.
The thistle board proportioning raw materials of water-proof fire-retardant without asbestos is as shown in table 2.
Table 2 is without asbestos water-proof fire-retardant thistle board proportioning raw materials table (%)
Raw material Blast furnace slag Flyash Desulfurated plaster 32.5 cement Paper fiber Sepiolite fibre
Ratio 40 10 20 20 3 7
Take, by proportioning in table 2, the raw material that gross dry weight is 800g to add in blender, add water and the ratio of mud is adjusted to 0.35, start blender, first stir 2 minutes with 140 revs/min, stop stirring 20s, adhesion raw material on wall is linked in groove, then with 280 revs/min of quick stirring 2min; Shoveling in ferrum die trial by the slurry being stirred with little spades, fully consolidated by slurry with tamper simultaneously, it is highly 11mm graduation mark that slurry is loaded, and filler completes bonnet mold lid; The die trial installed is kept 4 minutes with the pressure of 20Mpa under hydraulic press, after molding, takes out holding chamber warming middle-JIAO precuring 8 hours;Will complete precuring idiosome take out, be placed into steaming oxygen still in when pressure 1.05MPa, temperature 1700 DEG C steam press maintenance 10 hours; The plate taking out maintenance good dries 5 hours with the temperature of 60 DEG C in drying baker, obtains without asbestos water-proof fire-retardant thistle board product.
The thistle board product performance index of water-proof fire-retardant without asbestos entrusts Baotou product quality gauge check to detect, testing result is as shown in table 3, the all indexs of product all meet national standard JC/T564.2 regulation the fifth class rupture strength requirement that is up to state standards.
Table 3 is without asbestos water-proof fire-retardant thistle board product performance index
Project name Detection method National standard JCT564.2-2008 The thistle board product of water-proof fire-retardant without asbestos
Size (long �� wide �� high) 160 mm��160 mm��10mm
Pattern Profile is complete, without arrisdefect, falls limit phenomenon
Fire prevention (noninflammability) GB8624-1997 GB8624-2006 A level is not fired A level is not fired
Fire rating (min) GB8624-1997 240
Unit weight (g/cm3) ��GB/T7019-1997 1.2-1.4 1.12
Dispatch from the factory moisture content ��GB/T7019-1997 <10% 4.36%
Heat conductivity (W/m K) JC/T564 <0.3 0.21
Impact resistance JC/T564 Falling ball method experiment is impacted once, and plate face is without through check Meet
Anti-folding (Mpa) GB/T7019-1997 Fifth class >=14MPa 18.52MPa
Water absorption rate GB/T7019-1997 ��20% 15.23%
Freeze proof ��GB/T7019-1997 25 circulating freezing resistances must not occur that layering etc. destroys Meet
Impermeability ��GB/T7019-1997 Allow plate reverse side that wet trace occurs after 24h inspection but be not allow for water droplet Meet
The wet rate that rises ��GB/T7019-1997 <0.25% ��0.05%
Percent thermal shrinkage ��GB/T7019-1997 <0.5% ��0.18%

Claims (2)

1. one kind comprehensively utilizes the steel mill solid waste preparation method without asbestos water-proof fire-retardant thistle board, it is characterised in that described method step is as follows:
(1) material dry weight percent is pressed without asbestos water-proof fire-retardant thistle board raw material: blast furnace slag 35-45%, flyash 5-15%, desulfurated plaster 15-25%, cement 15-25%, paper fiber 2-4%, sepiolite fibre 6-8%;
(2) take raw material according to ratio in step (1) and add up to 800g, add in blender, then mix a certain amount of water, water/gray scale is adjusted to 0.3-0.4, first stirs 2min with 140 revs/min, stop stirring 20s, adhesion raw material on wall is scraped in groove, then with 280 revs/min of quick stirring 2min;
(3) raw material being stirred in step (2) is shoveled in the ferrum die trial that length, width and height are 160 �� 160 �� 10mm with little spades, shovel limit, limit tamper fully consolidates the raw material at die trial surrounding and middle part, it is filled to die trial 11mm graduation mark, the extruding thickness of reserved 1mm, again die trial lid being built and tightened die trial surrounding clamping screw, whole die-filling process need to complete in 3 minutes;
(4) die trial that installs in step (3) is kept 3-6 minute with the pressure of 20-30MPa under hydraulic press, take out after molding and be positioned in room temperature precuring 6-12 hour;
(5) base substrate that will complete precuring in step (4) takes out, and is placed in steam-cured still, pressure 1.05-1.08MPa, temperature 170-190 DEG C when steam press maintenance 8-16 hour;
(6) plate completing steam press maintenance in step (5) is taken out, dry 4-6 hour with the temperature of 50-70 DEG C in drying baker, obtain without asbestos water-proof fire-retardant thistle board product.
2. comprehensive utilization steel mill solid waste according to claim 1 preparation is without the method for asbestos water-proof fire-retardant thistle board, it is characterized in that, the thickness of the thistle board product of water-proof fire-retardant without asbestos can by work loading height in regulating step (3) and in step (4) briquetting pressure control, the thickness adjustable extent of described product is 5-12mm.
CN201410706067.7A 2014-11-27 2014-11-27 A kind of steel mill solid waste that comprehensively utilizes prepares the method without asbestos water-proof fire-retardant thistle board Expired - Fee Related CN104446546B (en)

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CN105038265A (en) * 2015-07-09 2015-11-11 石狮国高电子科技有限公司 Modified waste residue fireproof waterproof panel and preparation method therefor
CN105174884A (en) * 2015-07-10 2015-12-23 常州市诺金精密机械有限公司 Anti-ultraviolet calcium silicate board prepared from industrial waste residue and production process thereof
CN105016695A (en) * 2015-07-10 2015-11-04 常州市诺金精密机械有限公司 Oil-resistant calcium silicate plate prepared with industrial waste, and production process thereof
CN105016696A (en) * 2015-07-14 2015-11-04 常州市武进翔宇电子元器件有限公司 Oil-resistant high temperature resistant calcium silicate board prepared from industrial waste residues and production technology of oil-resistant high temperature resistant calcium silicate board
CN111635207A (en) * 2020-06-08 2020-09-08 湖南楚天钡业有限公司 Environment-friendly radiation-proof composite material and preparation method and application thereof

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CN103319118B (en) * 2013-05-21 2014-11-12 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Method for making heat insulation plates through utilizing industrial solid wastes

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