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
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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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