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A platform for research: civil engineering, architecture and urbanism
Preparation method of composite activated solid waste-based cemented lepidolite superfine tailing filling material
The invention provides a preparation method of a composite activated solid waste-based cemented lepidolite ultrafine grain tailing filling material, and belongs to the technical field of tailing filling. The method comprises the following steps: firstly, uniformly mixing lithium slag, steel slag, desulfurized gypsum, wollastonite powder, water glass and the like according to a ratio, putting the mixture into a high-temperature and high-pressure reaction kettle under set autoclaving conditions, performing autoclaving activation, drying and grinding, and mixing with cement to obtain a composite activated solid waste-based cementing material; and mixing the lepidolite ultrafine tailings with the composite activated solid waste-based cementing material, and adding tap water to form filling slurry. According to the invention, the problems of low compressive strength, poor slurry fluidity and large use amount of the cementing material of the cemented ultrafine tailings can be effectively improved. Especially under the age background of increasing lithium resource demands, the method has good economic benefits and carbon emission reduction benefits, and is one of effective ways for comprehensive resource utilization of solid waste materials generated by lithium resource ore extraction and industrial production.
本发明提供一种复合活化固废基胶结锂云母超细粒尾砂充填料的制备方法，属于尾砂充填技术领域。该方法首先将锂渣、钢渣、脱硫石膏、硅灰石粉、水玻璃等按比例混匀后放入设置好蒸压条件下的高温高压反应釜进行蒸压活化，烘干、研磨，并和水泥混合后得到复合活化固废基胶凝材料；然后将锂云母超细粒尾砂与复合活化固废基胶凝材料混合，加自来水形成充填料浆。本发明能有效改善胶结超细粒尾砂出现的抗压强度低、料浆流动性差及胶凝材料用量大的问题。特别在锂资源需求日益增长的时代背景下，本发明具备较好的经济效益和碳减排效益，是对锂资源矿石开采及工业生产所产生的固体废弃材料资源化综合利用的有效途径之一。
Preparation method of composite activated solid waste-based cemented lepidolite superfine tailing filling material
The invention provides a preparation method of a composite activated solid waste-based cemented lepidolite ultrafine grain tailing filling material, and belongs to the technical field of tailing filling. The method comprises the following steps: firstly, uniformly mixing lithium slag, steel slag, desulfurized gypsum, wollastonite powder, water glass and the like according to a ratio, putting the mixture into a high-temperature and high-pressure reaction kettle under set autoclaving conditions, performing autoclaving activation, drying and grinding, and mixing with cement to obtain a composite activated solid waste-based cementing material; and mixing the lepidolite ultrafine tailings with the composite activated solid waste-based cementing material, and adding tap water to form filling slurry. According to the invention, the problems of low compressive strength, poor slurry fluidity and large use amount of the cementing material of the cemented ultrafine tailings can be effectively improved. Especially under the age background of increasing lithium resource demands, the method has good economic benefits and carbon emission reduction benefits, and is one of effective ways for comprehensive resource utilization of solid waste materials generated by lithium resource ore extraction and industrial production.
本发明提供一种复合活化固废基胶结锂云母超细粒尾砂充填料的制备方法，属于尾砂充填技术领域。该方法首先将锂渣、钢渣、脱硫石膏、硅灰石粉、水玻璃等按比例混匀后放入设置好蒸压条件下的高温高压反应釜进行蒸压活化，烘干、研磨，并和水泥混合后得到复合活化固废基胶凝材料；然后将锂云母超细粒尾砂与复合活化固废基胶凝材料混合，加自来水形成充填料浆。本发明能有效改善胶结超细粒尾砂出现的抗压强度低、料浆流动性差及胶凝材料用量大的问题。特别在锂资源需求日益增长的时代背景下，本发明具备较好的经济效益和碳减排效益，是对锂资源矿石开采及工业生产所产生的固体废弃材料资源化综合利用的有效途径之一。
Preparation method of composite activated solid waste-based cemented lepidolite superfine tailing filling material
复合活化固废基胶结锂云母超细粒尾砂充填料的制备方法
ZHU DAOPEI (author) / LI JIAFENG (author) / HUANG NANHUI (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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