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Steel slag-based active admixture and preparation method thereof
The invention belongs to the technical field of solid waste resource utilization and building material preparation, and discloses a low-cost steel slag-based active admixture and a preparation method thereof, the preparation method comprises the following steps: 1) pre-drying construction waste to obtain construction waste with the water content of 0.2-1%; 2) grinding the construction waste obtained in the step 1) until the specific surface area is 100-150m < 2 >/kg to obtain primarily ground construction waste; (3) feeding the steel slag, the mineral slag and the primarily ground construction waste obtained in the step (2) into grinding equipment, and grinding until the specific surface area is 200-300m < 2 >/kg to obtain a three-component mixture; and 4) removing iron from the three-component mixture until the iron content is less than 0.5%, feeding into grinding equipment, adding fly ash and an activating agent, and grinding until the specific surface area is 450-550m < 2 >/kg to obtain the steel slag-based active admixture. The low-cost and high-activity active admixture is obtained through the synergistic grinding ultrafine effect, mutual excitation effect, crystal nucleus effect and filling effect among the steel slag, the construction waste, the mineral slag, the fly ash and the activating agent, grinding and shaping.
本发明属于固废资源化利用及建筑材料制备技术领域，公开了一种低成本钢渣基活性掺和料及其制备方法，包括以下步骤：1)对建筑垃圾进行预烘干，得到含水率为0.2～1％的建筑垃圾；2)将步骤1)所得建筑垃圾粉磨至比表面积100～150m2/kg，得到初磨后的建筑垃圾；3)将钢渣和矿渣以及步骤2)所得初磨后的建筑垃圾送入粉磨设备，粉磨至比表面积200～300m2/kg，得到三组分混料；4)对三组分混料进行除铁至铁含量小于0.5％，再送入粉磨设备，并加入粉煤灰和激活剂，粉磨至比表面积450～550m2/kg，得到钢渣基活性掺和料。本发明通过钢渣、建筑垃圾、矿渣、粉煤灰及激活剂之间的协同研磨超细化效应、互激发效应、晶核效应和填充效应，粉磨、整形得到低成本、高活性的活性掺和料。
Steel slag-based active admixture and preparation method thereof
The invention belongs to the technical field of solid waste resource utilization and building material preparation, and discloses a low-cost steel slag-based active admixture and a preparation method thereof, the preparation method comprises the following steps: 1) pre-drying construction waste to obtain construction waste with the water content of 0.2-1%; 2) grinding the construction waste obtained in the step 1) until the specific surface area is 100-150m < 2 >/kg to obtain primarily ground construction waste; (3) feeding the steel slag, the mineral slag and the primarily ground construction waste obtained in the step (2) into grinding equipment, and grinding until the specific surface area is 200-300m < 2 >/kg to obtain a three-component mixture; and 4) removing iron from the three-component mixture until the iron content is less than 0.5%, feeding into grinding equipment, adding fly ash and an activating agent, and grinding until the specific surface area is 450-550m < 2 >/kg to obtain the steel slag-based active admixture. The low-cost and high-activity active admixture is obtained through the synergistic grinding ultrafine effect, mutual excitation effect, crystal nucleus effect and filling effect among the steel slag, the construction waste, the mineral slag, the fly ash and the activating agent, grinding and shaping.
本发明属于固废资源化利用及建筑材料制备技术领域，公开了一种低成本钢渣基活性掺和料及其制备方法，包括以下步骤：1)对建筑垃圾进行预烘干，得到含水率为0.2～1％的建筑垃圾；2)将步骤1)所得建筑垃圾粉磨至比表面积100～150m2/kg，得到初磨后的建筑垃圾；3)将钢渣和矿渣以及步骤2)所得初磨后的建筑垃圾送入粉磨设备，粉磨至比表面积200～300m2/kg，得到三组分混料；4)对三组分混料进行除铁至铁含量小于0.5％，再送入粉磨设备，并加入粉煤灰和激活剂，粉磨至比表面积450～550m2/kg，得到钢渣基活性掺和料。本发明通过钢渣、建筑垃圾、矿渣、粉煤灰及激活剂之间的协同研磨超细化效应、互激发效应、晶核效应和填充效应，粉磨、整形得到低成本、高活性的活性掺和料。
Steel slag-based active admixture and preparation method thereof
一种钢渣基活性掺和料及其制备方法
GAN WANGUI (author) / ZHAO QINGLIN (author) / GONG WEI (author) / WANG NIAN (author)
2024-02-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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