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A platform for research: civil engineering, architecture and urbanism
Preparation method of cement admixture
The invention provides a preparation method of a cement admixture, which comprises the following steps: drying, grinding and sieving electrolytic manganese residues, adding coke powder, mixing, calcining at 900 DEG C for 2 hours, cooling and sieving to obtain calcined electrolytic manganese residues; naOH solid is dissolved in water, and a NaOH solution is obtained; cement and the calcined electrolytic manganese residues are uniformly mixed, then a NaOH solution is added, slurry is obtained after stirring, the slurry is poured into a mold, uniform vibrating and curing are performed for 28 days, and the cement admixture is obtained. The use amount of the cement is reduced, the consumption of the electrolytic manganese residue solid waste is increased, and a new thought is provided for the consumption of the electrolytic manganese residue solid waste. The gelling activity of the electrolytic manganese residues is excited through high-temperature calcination, and the electrolytic manganese residues have high strength under the composite action of cement and NaOH.
本发明提供了一种水泥外掺料的制备方法，该方法为:将电解锰渣烘干、研磨后过筛，加入焦炭粉，混合后，900℃煅烧2h，冷却后过筛，得到煅烧后的电解锰渣；将NaOH固体用水中溶解，得到NaOH溶液；将水泥和煅烧后的电解锰渣混合均匀，然后加入NaOH溶液，搅拌后得到浆体，倒入模具中，振捣均匀，养护28d，得到水泥外掺料。本发明减少了水泥的用量，增加了电解锰渣固废的消耗，为电解锰渣固废消耗提供了新的思路。电解锰渣经过高温煅烧激发其胶凝活性，在水泥和NaOH复合作用下具有较高的强度。
Preparation method of cement admixture
The invention provides a preparation method of a cement admixture, which comprises the following steps: drying, grinding and sieving electrolytic manganese residues, adding coke powder, mixing, calcining at 900 DEG C for 2 hours, cooling and sieving to obtain calcined electrolytic manganese residues; naOH solid is dissolved in water, and a NaOH solution is obtained; cement and the calcined electrolytic manganese residues are uniformly mixed, then a NaOH solution is added, slurry is obtained after stirring, the slurry is poured into a mold, uniform vibrating and curing are performed for 28 days, and the cement admixture is obtained. The use amount of the cement is reduced, the consumption of the electrolytic manganese residue solid waste is increased, and a new thought is provided for the consumption of the electrolytic manganese residue solid waste. The gelling activity of the electrolytic manganese residues is excited through high-temperature calcination, and the electrolytic manganese residues have high strength under the composite action of cement and NaOH.
本发明提供了一种水泥外掺料的制备方法，该方法为:将电解锰渣烘干、研磨后过筛，加入焦炭粉，混合后，900℃煅烧2h，冷却后过筛，得到煅烧后的电解锰渣；将NaOH固体用水中溶解，得到NaOH溶液；将水泥和煅烧后的电解锰渣混合均匀，然后加入NaOH溶液，搅拌后得到浆体，倒入模具中，振捣均匀，养护28d，得到水泥外掺料。本发明减少了水泥的用量，增加了电解锰渣固废的消耗，为电解锰渣固废消耗提供了新的思路。电解锰渣经过高温煅烧激发其胶凝活性，在水泥和NaOH复合作用下具有较高的强度。
Preparation method of cement admixture
一种水泥外掺料的制备方法
WU ZHONGHU (author) / YANG CHAO (author) / LI ZHAOFENG (author) / ZHANG YA (author) / YAN HAIBO (author) / XIE HONGYAN (author) / ZHANG XIAOFANG (author)
2023-12-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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