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Methods for preparing calcium sulphosilicate-dicalcium silicate-calcium sulphoaluminate system by calcium carbide slag and improving later strength of cement
A method for preparing a calcium sulphosilicate-dicalcium silicate-calcium sulphoaluminate system from a calcium carbide slag is disclosed which comprises preparation of raw meal by grinding calcium carbide slag, silica fume, and one of phosphogypsum and desulfurized gypsum by a pulverizer, and sieving by a 200- mesh sieve, mixing sieved raw material evenly by a mixer according to mass ratios as follows: A calcium carbide slag, silica fume and phosphogypsum at a mass ratio of 54:20:26 or B calcium carbide slag, silica fume and desulfurized gypsum at a mass ratio of 53:28:19, sieving by a 0.08- mm sieve, and putting in a mold for compression molding, to obtain raw meal; calcining the raw meal, wherein when the raw meal is obtained based on mass ratio A, the calcination is performed at 1200 °C, and when the raw meal is obtained based on mass ratio B, the calcination is performed at 1150 °C; and taking out the calcined product obtained, cooling to room temperature within 20 min, and pulverizing to obtain the calcium sulphosilicate-dicalcium silicate-calcium sulphoaluminate where calcium sulphosilicate is the main component.
Methods for preparing calcium sulphosilicate-dicalcium silicate-calcium sulphoaluminate system by calcium carbide slag and improving later strength of cement
A method for preparing a calcium sulphosilicate-dicalcium silicate-calcium sulphoaluminate system from a calcium carbide slag is disclosed which comprises preparation of raw meal by grinding calcium carbide slag, silica fume, and one of phosphogypsum and desulfurized gypsum by a pulverizer, and sieving by a 200- mesh sieve, mixing sieved raw material evenly by a mixer according to mass ratios as follows: A calcium carbide slag, silica fume and phosphogypsum at a mass ratio of 54:20:26 or B calcium carbide slag, silica fume and desulfurized gypsum at a mass ratio of 53:28:19, sieving by a 0.08- mm sieve, and putting in a mold for compression molding, to obtain raw meal; calcining the raw meal, wherein when the raw meal is obtained based on mass ratio A, the calcination is performed at 1200 °C, and when the raw meal is obtained based on mass ratio B, the calcination is performed at 1150 °C; and taking out the calcined product obtained, cooling to room temperature within 20 min, and pulverizing to obtain the calcium sulphosilicate-dicalcium silicate-calcium sulphoaluminate where calcium sulphosilicate is the main component.
Methods for preparing calcium sulphosilicate-dicalcium silicate-calcium sulphoaluminate system by calcium carbide slag and improving later strength of cement
SUPING CUI (author) / LULU XU (author) / YALI WANG (author) / MINGZHANG LAN (author) / JIANFENG WANG (author)
2024-09-25
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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