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Method for preparing cement-based material from carbonized steel slag slurry
The invention relates to a method for preparing a cement-based material by using carbonized steel slag slurry, which comprises the following steps: introducing carbon dioxide while stirring steel slag and an aqueous solution, and controlling the stirring speed and temperature to obtain the carbonized steel slag slurry. And calculating the water replenishing mass according to the CO2 absorption rate, and mixing and stirring all carbonized slurry, replenishing water, cement and other materials to prepare the cement-based material. The steel slag used by the cement-based material is converter steel slag with the particle size of 0-75 microns, and the highest cement replacement rate can reach 30%. Compared with an uncarbonized steel slag composite cement-based material, the prepared carbonized steel slag composite cement-based material has the advantages that the 28-day strength can be improved by 15%, the problem of poor volume stability of the steel slag is solved, the utilization rate of the steel slag is improved, 10-16 wt.% of carbon dioxide can be absorbed, and the carbonized steel slag composite cement-based material has obvious economic benefits and environmental protection values.
一种利用碳化钢渣浆体制备水泥基材料的方法，制备时，在钢渣与水溶液搅拌的同时通入二氧化碳，控制搅拌速度和温度，得到碳化钢渣浆体。根据CO2吸收率计算补水质量，将碳化后的全部浆体、补充水和水泥等材料混合搅拌制备水泥基材料。所述水泥基材料所用钢渣为粒径0～75μm的转炉钢渣，最高水泥替代率可达30％。本发明所制备的碳化钢渣复合水泥基材料与未碳化钢渣复合水泥基材料相比，28天强度提升可达15％，解决了钢渣体积安定性不良的问题，提高了钢渣利用率，同时可吸收10～16wt.％二氧化碳，具有明显的经济效益和环保价值。
Method for preparing cement-based material from carbonized steel slag slurry
The invention relates to a method for preparing a cement-based material by using carbonized steel slag slurry, which comprises the following steps: introducing carbon dioxide while stirring steel slag and an aqueous solution, and controlling the stirring speed and temperature to obtain the carbonized steel slag slurry. And calculating the water replenishing mass according to the CO2 absorption rate, and mixing and stirring all carbonized slurry, replenishing water, cement and other materials to prepare the cement-based material. The steel slag used by the cement-based material is converter steel slag with the particle size of 0-75 microns, and the highest cement replacement rate can reach 30%. Compared with an uncarbonized steel slag composite cement-based material, the prepared carbonized steel slag composite cement-based material has the advantages that the 28-day strength can be improved by 15%, the problem of poor volume stability of the steel slag is solved, the utilization rate of the steel slag is improved, 10-16 wt.% of carbon dioxide can be absorbed, and the carbonized steel slag composite cement-based material has obvious economic benefits and environmental protection values.
一种利用碳化钢渣浆体制备水泥基材料的方法，制备时，在钢渣与水溶液搅拌的同时通入二氧化碳，控制搅拌速度和温度，得到碳化钢渣浆体。根据CO2吸收率计算补水质量，将碳化后的全部浆体、补充水和水泥等材料混合搅拌制备水泥基材料。所述水泥基材料所用钢渣为粒径0～75μm的转炉钢渣，最高水泥替代率可达30％。本发明所制备的碳化钢渣复合水泥基材料与未碳化钢渣复合水泥基材料相比，28天强度提升可达15％，解决了钢渣体积安定性不良的问题，提高了钢渣利用率，同时可吸收10～16wt.％二氧化碳，具有明显的经济效益和环保价值。
Method for preparing cement-based material from carbonized steel slag slurry
一种利用碳化钢渣浆体制备水泥基材料的方法
LIN ZHONGCAI (author) / LI YISHA (author) / LUO SHUANG (author)
2022-05-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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