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
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AI-Extracted 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 ge...
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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.

Application Domain

Ceramic shaping apparatus

Technology Topic

Calcium in biologyFire retardant +9


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


  • Experimental program(2)
  • Comparison scheme(2)

Example Embodiment

[0034] Example 1
[0035] Grind the quartz powder until it passes through a ten-thousand-hole sieve, add slaked lime powder with a CaO content of 72.2%, mix well, the C/S of the slurry is 0.99, and then add 6% cotton fiber and 4% wollastonite powder with dry weight. Stir well, pour 1010×1010×400 (length×width×height, mm) into the mold, send the mold and the trolley with the material into the steam curing kettle, and heat to 1.8MPa with steam, and between 1.8~2.0MPa Continue for 24 hours, cool down to normal pressure, take out the kettle, open the mold, dry the material block to a constant weight in a drying kiln at about 140°C, cut it into a 1010×1010×21 (mm) board with a diamond saw, and then Processed by sanding machine and trimming machine into finished boards of 1000×1000×20 (mm). Other related properties are shown in Table 1.

Example Embodiment

[0036] Example 2
[0037] Grind the quartz powder until it passes through a ten-thousand-hole sieve (0.061mm), add the dispersed silica fume, the weight ratio of quartz to silica fume is 6:4, add lime milk with a CaO content of 73.1% (dry basis), and mix well. The C/S of the slurry is 1.03, then add 3% of the dry weight of the paper fiber and 12% of the wollastonite powder, stir evenly, pump into the gelling tank with stirring, ventilate and heat to 130~140℃ and continue for 20 After hours, vent and cool down to normal pressure. Pour the slurry into a 1010×1010×400(mm) mold, put it into the kettle, and continue at a pressure of 2.3~2.5MPa for 16 hours, cool out of the kettle, open the mold, dry, slice, sand, trim, and process it into 1000×500×40 (mm) board. Other properties are shown in Table 1.


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Description & Claims & Application Information

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