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

[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.

[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.