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Method for preparing calcium silicate board from low-grade limestone
The invention discloses a method for preparing a calcium silicate board from low-grade limestone. The method comprises steps as follows: 1) crushing and homogenization of low-grade limestone; 2) calcination; 3) digestion: the calcined low-grade limestone in Step 2) is digested and transferred into a storage tank; 4) preparation of mixed slurry: a siliceous material, paper fibers and alkali-resistant short glass fibers are added to slurry in the storage tank in Step 3), and mixed slurry is prepared; 5) blank formation: a blank is prepared from the mixed slurry obtained in Step 4) and trimmed; 6) autoclaved curing: the trimmed blank in Step 5) is transferred into an autoclave for autoclaved curing, pressure relief, cooling, drying, edging and sanding are performed, and the calcium silicate board is prepared. The low-grade limestone can be matched and utilized again, the requirement for raw materials in production of the calcium silicate board is met, the production cost is reduced, the green industry is formed, and energy is saved.
Method for preparing calcium silicate board from low-grade limestone
The invention discloses a method for preparing a calcium silicate board from low-grade limestone. The method comprises steps as follows: 1) crushing and homogenization of low-grade limestone; 2) calcination; 3) digestion: the calcined low-grade limestone in Step 2) is digested and transferred into a storage tank; 4) preparation of mixed slurry: a siliceous material, paper fibers and alkali-resistant short glass fibers are added to slurry in the storage tank in Step 3), and mixed slurry is prepared; 5) blank formation: a blank is prepared from the mixed slurry obtained in Step 4) and trimmed; 6) autoclaved curing: the trimmed blank in Step 5) is transferred into an autoclave for autoclaved curing, pressure relief, cooling, drying, edging and sanding are performed, and the calcium silicate board is prepared. The low-grade limestone can be matched and utilized again, the requirement for raw materials in production of the calcium silicate board is met, the production cost is reduced, the green industry is formed, and energy is saved.
Method for preparing calcium silicate board from low-grade limestone
ZHANG SHENG (author) / MAO SHAOBO (author) / ZHANG YONG (author) / JI JIASHAN (author)
2016-01-06
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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