CN104446546A - Method for preparing non-asbestos water-tolerant fireproof light-weight board by comprehensively utilizing solid wastes in steel mill - Google Patents
Method for preparing non-asbestos water-tolerant fireproof light-weight board by comprehensively utilizing solid wastes in steel mill Download PDFInfo
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- CN104446546A CN104446546A CN201410706067.7A CN201410706067A CN104446546A CN 104446546 A CN104446546 A CN 104446546A CN 201410706067 A CN201410706067 A CN 201410706067A CN 104446546 A CN104446546 A CN 104446546A
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Abstract
The invention aims to provide a method for preparing a non-asbestos water-tolerant fireproof light-weight board by comprehensively utilizing solid wastes in a steel mill. The process technology of the method comprises mixing of multiple raw materials in a proportion, addition of water to reach a certain water-cement ratio, stirring, mold filling, compression molding, pre-curing, demolding, autoclave curing and drying; useful content in different industrial wastes is made full use of, and therefore, the non-asbestos water-tolerant fireproof light-weight board meeting quality requirements of a national standard JC/T 564.2 for a five-grade product is prepared. The non-asbestos water-tolerant fireproof light-weight board has the advantages of high strength, high water-tolerant performance, fireproof performance, non-asbestos performance and the like, can replace gypsum plaster boards and asbestos fiber reinforced calcium silicate boards used in the market currently to serve as an indoor decoration material and is more durable and more environment-friendly. The three raw materials used for the method are all industrial wastes discharged by the steel mill and can be conveniently used by steel enterprises at home and abroad to build factories on site with the method, pollution of the discharged industrial solid wastes to the environment can be reduced, and meanwhile, economic and social benefits of turning waste into wealth can be achieved.
Description
Technical field
The present invention relates to a kind of using industrial solid waste and prepare method without the fire-resistant moistureproof Light trabs of asbestos, particularly fully utilize useful component in the Industrial Solid Wastes such as blast furnace slag, flyash and desulfurated plaster and prepare the method without 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 quantity dischargeds such as blast-furnace slag, desulfurated plaster and flyash will increase year by year, the industrial waste accumulated over a long period will have a strong impact on local environment and land resources, therefore improve Industrial Solid Waste rate of utilization, realize waste resource comprehensive utilization and china natural resources and environment are all had great importance.
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, folding strength is low, there is easy water erosion as indoor suspended ceiling material, easily to come off equivalent risk; Calcium silicate board mainly adopts the additional paper fiber of quartz sand, unslaked lime and mineral fibre to make, and has the advantages such as water-fast, high strength, but due to problems such as cost are high, construction is difficult, cause marketing 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 synergy between different solid waste, produce and obtain the material of construction meeting national standard, not only can realize the comprehensive utilization of industrial solid wastes, the pollution of solid waste discharge to environment can also be reduced.
Summary of the invention
The industrial solid wastes such as blast furnace slag, flyash and desulfurated plaster and cement mix by the present invention according to a certain percentage, and mix a small amount of paper fiber and sepiolite fibre, under certain water cement ratio fully after mixing-moulded section, obtain finishing water-proof fire-retardant Light trabs by autoclave 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) get raw material according to ratio in (1) and add up to 800g(except weight after moisture), add in stirrer, mix certain water gaging 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 rapid stirring 2min;
(3) the little spades of the raw material be stirred in (2) is shoveled in the iron die trial shown in accompanying drawing 2 of (length, width and height) 160 × 160 × 10mm, the raw material at shovel limit, limit tamper abundant tamping die trial surrounding and middle part, after being filled to die trial 11mm scale marks (the extruding thickness of reserved 1mm), built by die trial lid and tighten die trial surrounding cramp screw, whole die-filling process need complete in 3 minutes;
(4) die trial installed in (3) is kept 3-6 minute with the pressure of 20-30Mpa under hydraulic press, precuring 6-12 hour in room temperature is placed in shaping rear taking-up;
(5) idiosome that will complete precuring in (4) takes out, and is placed into and steams in oxygen still steam press maintenance 8-16 hour under the condition of pressure 1.05-1.08MPa, temperature 170-190 DEG C;
(6) plate completing steam press maintenance in (5) is taken out, with the dry 4-6 hour of the temperature of 50-70 DEG C in loft drier, obtain without asbestos water-proof fire-retardant thistle board product.
Thickness without asbestos water-proof fire-retardant thistle board product can control by regulating work loading height and (4) middle forming pressure in (2), and product thickness variable range is 5-12mm.
Feature of the present invention is: the present invention is with blast furnace slag, the Industrial Solid Waste such as flyash and desulfurated plaster and cement are main 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 strength, high water-fast, fire prevention and without advantages such as asbestos, the Thistle board that uses in the market can be replaced and fibrous magnesium silicate strengthens calcium silicate board as indoor hardware fitting, and more durable and environmental protection, adopt invention technology, the pollution of Industrial Solid Waste discharge to environment can not only be reduced, the economic and social benefit of turning waste into wealth can also be played.
Accompanying drawing explanation
Fig. 1 is the production scheme of the present invention without asbestos water-proof fire-retardant thistle board;
Fig. 2 (a) is the plan structure figure of iron test die;
The side-looking structure iron that Fig. 2 (b) is iron test die.
Embodiment
Embodiment
Blast furnace slag, flyash and desulfurated plaster take from BAOGANG GROUP smeltery, its chemical composition and physical properties as shown in table 1.
The chemical composition of table 1 three kinds of solid wastes and physical properties (%)
| Solid waste | SiO 2 | Al 2O 3 | CaO | Fe 2O 3 | MgO | SO 3 | TiO 2 | Proportion | Specific surface area (m 2/g) | -75 μm 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.
As shown in table 2 without asbestos water-proof fire-retardant thistle board proportioning raw materials.
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 |
Getting gross dry weight by proportioning in table 2 is that the raw material of 800g adds in stirrer, adds water water cement ratio to be adjusted to 0.35, starts stirrer, first stirs 2 minutes with 140 revs/min, stop stirring 20s, be linked in groove by adhesion raw material on wall, then with 280 revs/min of rapid stirring 2min; The little spades of the slurry be stirred is shoveled in iron die trial, simultaneously with tamper by abundant for slurry tamping, slurry load be highly 11mm scale marks, filler completes bonnet mold lid; The die trial installed is kept 4 minutes with the pressure of 20Mpa under hydraulic press, precuring 8 hours in shaping rear taking-up placement room temperature; The idiosome that will complete precuring takes out, and is placed into and steams in oxygen still under the condition of pressure 1.05MPa, temperature 1700 DEG C steam press maintenance 10 hours; Take out the good plate of maintenance in loft drier with dry 5 hours of the temperature of 60 DEG C, obtain without asbestos water-proof fire-retardant thistle board product.
Baotou quality product Measuring and testing is entrusted to detect without asbestos water-proof fire-retardant thistle board product performance index, detected result is as shown in table 3, the all indexs of product all meet national standard JC/T 564.2 and specify, and the fifth class folding 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 | Without asbestos water-proof fire-retardant thistle board product |
| Size (long × wide × high) | 160 mm×160 mm×10mm | ||
| Pattern | Profile is complete, without arrisdefect, falls limit phenomenon | ||
| Fire prevention (uninflammability) | GB8624-1997 | GB8624-2006 A level is not fired | A level is not fired |
| Fire rating (min) | GB8624-1997 | 240 | |
| Unit weight (g/cm 3） | GB/T7019-1997 | 1.2-1.4 | 1.12 |
| Dispatch from the factory water ratio | GB/T7019-1997 | <10% | 4.36% |
| Thermal conductivity (W/mK) | JC/T564 | <0.3 | 0.21 |
| Shock 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-intake rate | GB/T7019-1997 | ≤20% | 15.23% |
| Freeze proof | GB/T7019-1997 | 25 times must not there is the destructions such as layering in circulating freezing resistance | Meet |
| Watertightness | GB/T7019-1997 | Plate reverse side is allowed to occur wet trace but do not allowed water droplet after 24h inspection | 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. fully utilize steelworks solid waste and prepare a method without asbestos water-proof fire-retardant thistle board, it is characterized in that, described method steps 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) get raw material according to ratio in step (1) and add up to 800g, add in stirrer, then mix certain water gaging, 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 rapid stirring 2min;
(3) raw material be stirred in step (2) being shoveled length, width and height with little spades is in the iron die trial of 160 × 160 × 10mm, the raw material at shovel limit, limit tamper abundant tamping die trial surrounding and middle part, be filled to die trial 11mm scale marks, the extruding thickness of reserved 1mm, built by die trial lid and tighten die trial surrounding cramp screw, whole die-filling process need complete in 3 minutes;
(4) die trial installed in step (3) is kept 3-6 minute with the pressure of 20-30MPa under hydraulic press, shaping rear taking-up is positioned over precuring 6-12 hour in room temperature;
(5) base substrate completing precuring in step (4) is taken out, be placed into and steam in oxygen still, steam press maintenance 8-16 hour under the condition of pressure 1.05-1.08MPa, temperature 170-190 DEG C;
(6) plate completing steam press maintenance in step (5) is taken out, with the dry 4-6 hour of the temperature of 50-70 DEG C in loft drier, obtain without asbestos water-proof fire-retardant thistle board product.
2. comprehensive utilization steelworks solid waste according to claim 1 prepares the method without asbestos water-proof fire-retardant thistle board, it is characterized in that, thickness without asbestos water-proof fire-retardant thistle board product can be controlled by forming pressure in work loading height in regulating step (3) and step (4), and the thickness variable range of described product is 5-12mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706067.7A CN104446546B (en) | 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 |
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| CN201410706067.7A CN104446546B (en) | 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 |
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| CN104446546A true CN104446546A (en) | 2015-03-25 |
| CN104446546B CN104446546B (en) | 2016-06-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319118A (en) * | 2013-05-21 | 2013-09-25 | 内蒙古科技大学 | Method for making heat insulation plates through utilizing industrial solid wastes |
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- 2014-11-27 CN CN201410706067.7A patent/CN104446546B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319118A (en) * | 2013-05-21 | 2013-09-25 | 内蒙古科技大学 | Method for making heat insulation plates through utilizing industrial solid wastes |
Non-Patent Citations (1)
| Title |
|---|
| 沈荣熹: "中国纤维增强水泥复合材料的新进展", 《硅酸盐通报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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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| CN104446546B (en) | 2016-06-08 |
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Granted publication date: 20160608 Termination date: 20161127 |