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Method for producing heat-insulating fire-proofing material of calcium silicate by pouring-shaping

A fireproof material, casting molding technology, applied in ceramic molding machines, manufacturing tools, etc., can solve the problems of heat-resistant temperature not exceeding 650 ℃, waste of water resources and energy, not exceeding 650 ℃, etc. The effect of less amount and reduced energy consumption

Inactive Publication Date: 2008-07-09
莱州明发隔热材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, as thermal insulation materials, there are two types: 650°C grade and 1000°C grade. The heat-resistant temperature of the former does not exceed 650°C, and its application range is narrow. The heat-resistant temperature of the latter can reach 1000°C or even higher, but it is in production When using water that is 20 times the weight of dry materials, water resources and energy are wasted a lot; calcium silicate fireproof materials are generally made of three or more of cement, silica bath soil, quartz, lime, fly ash, asbestos, mica, etc. More kinds of raw materials are formed according to a certain proportion by copying method and static curing. This kind of board has high volume density and low heat resistance temperature. The general density is 1.0-1.4g / cm 3 , the heat resistance does not exceed 650°C, and it is used as a fireproof board, obviously the fire resistance limit is not enough

Method used

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  • Method for producing heat-insulating fire-proofing material of calcium silicate by pouring-shaping

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Grind the quartz powder until all of it passes through a multi-hole sieve, add slaked lime powder with a CaO content of 72.2%, stir well, the C / S of the slurry=0.99, then add 6% cotton fiber and 4% wollastonite powder by dry weight, Stir well, pour it into a mold of 1010×1010×400 (length×width×height, mm), put the mold and trolley with materials into the steam curing kettle, heat it to 1.8MPa with steam, and keep it between 1.8~2.0MPa Continue for 24 hours, cool down to normal pressure, take out the kettle, open the mold, dry the block to constant weight in a drying kiln at about 140°C, cut it into 1010×1010×21 (mm) boards with a diamond saw, and then It is processed into finished boards of 1000×1000×20 (mm) by sanding machine and trimming machine. Other related properties are shown in Table 1.

Embodiment 2

[0037] Grind the quartz powder until it passes through a million-hole sieve (0.061 mm), add the dispersed silica fume, the weight ratio of quartz and silica fume is 6:4, add lime milk with a CaO content of 73.1% (dry basis), and stir well. The C / S of the slurry is 1.03, then add 3% paper fiber and 12% wollastonite powder in dry weight, stir well, pump into the gelling tank with stirring, heat to 130-140°C with steam and last for 20 hours, and then cooled down to normal pressure. Inject the slurry into a mold of 1010×1010×400 (mm), put it into the kettle, and continue for 16 hours under the pressure of 2.3-2.5MPa, cool down and leave the kettle, open the mold, dry, slice, sand, trim, and process into 1000×500×40 (mm) plate. Other properties are shown in Table 1.

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PUM

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Abstract

The invention is a method for using pouring and forming method to produce calcium silicate heat insulation and fire-retardant material, the raw materials are calcium material, non-crystal silicon powder, quartz flour, silicon stone powder, fiber. The quartz is grinded until the powder can pass through the tiny sift, the non-crystal silicon powder is blended with water, the calcium is reduced into lime cream, the calcium and silicon materials are blended together, the mol proportion of CaO:SiO2 is 0.95~1.05. Adds in the fiber and 0~20% silicon stone powder. The mixed pulp is transmitted into kettle and heated, The gelatinizer is carried onto the kettle to be dried under 100~180 deg.C, the blank is cut into demanded size and form.

Description

Technical field: [0001] The invention relates to a method for producing calcium silicate heat-insulating and fire-proofing materials by pouring molding, which is used for industrial kilns, non-ferrous metallurgical industry diversion channels and steel structure fire-proof cladding, etc., and belongs to heat-insulating and fire-proof special building materials. Background technique: [0002] At present, as thermal insulation materials, there are two types: 650°C grade and 1000°C grade. The heat-resistant temperature of the former does not exceed 650°C, and its application range is narrow. The heat-resistant temperature of the latter can reach 1000°C or even higher, but it is in production When using water that is 20 times the weight of dry materials, water resources and energy are wasted a lot; calcium silicate fireproof materials are generally made of three or more of cement, silica bath soil, quartz, lime, fly ash, asbestos, mica, etc. More kinds of raw materials are forme...

Claims

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Application Information

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IPC IPC(8): B28B1/00B28B1/52
Inventor 孙祥云于祥旭夏凌毅郭立平李伟国
Owner 莱州明发隔热材料有限公司
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