Mfg. of ecological building agglutinating material by using carbide slag

Abstract

The present invention relates to a cement, in the concrete it is an environment-protecting cement which utilizes the carbide slag to make ecological building cementing material. Its production process includes the following steps: using carbide slag slurry whose water content is 90%, sedimentation to make dehydration, mechanical dehydration, drying, mixing with flyash and additive, grinding, sieving, grinding material under the sieve and sieving so as to obtain the invented ecological building cementing material. Its formula includes (by wt%) CaO 40-72, SiO2 20-51, additive 1-8 and other component 1-37.

Description

technical field

[0001] The invention relates to cement, in particular to environment-friendly masonry cement that utilizes calcium carbide slag to manufacture ecological building cementing materials. Background technique

[0002] At present, chemical plants using acetylene as raw material are producing calcium carbide-calcium carbide (CaC 2 ) process, discharge calcium carbide slag containing a large amount of water (the main components are: CaO containing 65-72%, Al 2 o 3 Contains 3%, SiO 2 Containing 3% and other substances, etc.), a medium-sized manufacturer discharges about 80,000 to 100,000 tons of carbide slag every year, and there are more than 20 medium-sized and above manufacturers in the country, which discharge millions of tons every year, and are still mainly stacked in the open air. The open-air stacking of waste slag not only takes up a lot of land, but more seriously, after being washed by rainwater, a large amount of alkaline wastewater not only pollutes s...

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