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A platform for research: civil engineering, architecture and urbanism
Method for preparation of dam cement by using coal mine wastes
The invention provides a method for preparation of dam cement by using coal mine wastes, wherein the method includes the following steps: weighing raw materials according to the weight ratio of coal gangue to lime to gypsum of 35 to (58.43-57.46) to (6.53-7.53), adding 0.1-0.3% of dicalcium silicate as a crystal stabilizer, then adding 3% of boric acid, grinding to make the fineness be 0.08 nm, adding 20-30% of water, forming, sintering to 1380 DEG C in a silicon molybdenum furnace, carrying out heat preservation for 40 min, shock-chilling in air to obtain a dam cement clinker, and then mixing and grinding with 5% of a gypsum set-controlling admixture to obtain the dam cement. The purposes of comprehensive utilization of secondary resources and energy saving are achieved, and the method has significant economic and social benefits.
Method for preparation of dam cement by using coal mine wastes
The invention provides a method for preparation of dam cement by using coal mine wastes, wherein the method includes the following steps: weighing raw materials according to the weight ratio of coal gangue to lime to gypsum of 35 to (58.43-57.46) to (6.53-7.53), adding 0.1-0.3% of dicalcium silicate as a crystal stabilizer, then adding 3% of boric acid, grinding to make the fineness be 0.08 nm, adding 20-30% of water, forming, sintering to 1380 DEG C in a silicon molybdenum furnace, carrying out heat preservation for 40 min, shock-chilling in air to obtain a dam cement clinker, and then mixing and grinding with 5% of a gypsum set-controlling admixture to obtain the dam cement. The purposes of comprehensive utilization of secondary resources and energy saving are achieved, and the method has significant economic and social benefits.
Method for preparation of dam cement by using coal mine wastes
WEI JIAN (author) / YU XUEFENG (author) / HONG FEI (author)
2015-10-28
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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