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A platform for research: civil engineering, architecture and urbanism
System, method and product for preparing building material by synergistically mineralizing carbon dioxide through steel slag
The invention discloses a system, a method and a product for preparing a building material by synergistically mineralizing carbon dioxide through steel slag, and belongs to the technical field of solid waste application and environmental protection. The system comprises a steel slag pretreatment unit, a premixing unit and a constant-temperature mineralization unit. The preparation method comprises the following steps: pretreating steel slag by adopting a three-stage crushing method to obtain steel slag powder, and then feeding the steel slag powder, gypsum and cement into a back-mixing type mixing bin for mixing to obtain a mixture; and finally, feeding the mixture, the full tailings and water into a constant-temperature mineralization reactor, and reacting under the supercritical CO2 condition to obtain the building material. According to the invention, the building material is prepared from the steel slag and the total tailings by using a supercritical CO2 mineralization process, the problem of waste pollution is effectively solved, and the prepared building material also has relatively high mechanical properties, can be applied to different building fields, and is a promising technology in the field of building materials in the future.
本发明公开了一种钢渣协同矿化二氧化碳制备建筑材料的系统、方法及产品，属于应用固废、环保技术领域。所述系统包括钢渣预处理单元、预混合单元和恒温矿化单元。制备方法为：先采用三级破碎的方法对钢渣进行预处理得到钢渣粉体，然后将所述钢渣粉体、石膏和水泥送入返混式混料仓内混合，得到混合料；最后将所述混合料、全尾矿和水送入至恒温矿化反应器内，在超临界CO2条件下进行反应，即得到所述建筑材料。本发明利用超临界CO2矿化工艺将钢渣和全尾矿制备成建筑材料，有效解决了废弃物污染的问题，并且，制备的建筑材料还具有较高的力学性能，可以应用在不同的建筑领域，是未来建筑材料领域的一项有前景的技术。
System, method and product for preparing building material by synergistically mineralizing carbon dioxide through steel slag
The invention discloses a system, a method and a product for preparing a building material by synergistically mineralizing carbon dioxide through steel slag, and belongs to the technical field of solid waste application and environmental protection. The system comprises a steel slag pretreatment unit, a premixing unit and a constant-temperature mineralization unit. The preparation method comprises the following steps: pretreating steel slag by adopting a three-stage crushing method to obtain steel slag powder, and then feeding the steel slag powder, gypsum and cement into a back-mixing type mixing bin for mixing to obtain a mixture; and finally, feeding the mixture, the full tailings and water into a constant-temperature mineralization reactor, and reacting under the supercritical CO2 condition to obtain the building material. According to the invention, the building material is prepared from the steel slag and the total tailings by using a supercritical CO2 mineralization process, the problem of waste pollution is effectively solved, and the prepared building material also has relatively high mechanical properties, can be applied to different building fields, and is a promising technology in the field of building materials in the future.
本发明公开了一种钢渣协同矿化二氧化碳制备建筑材料的系统、方法及产品，属于应用固废、环保技术领域。所述系统包括钢渣预处理单元、预混合单元和恒温矿化单元。制备方法为：先采用三级破碎的方法对钢渣进行预处理得到钢渣粉体，然后将所述钢渣粉体、石膏和水泥送入返混式混料仓内混合，得到混合料；最后将所述混合料、全尾矿和水送入至恒温矿化反应器内，在超临界CO2条件下进行反应，即得到所述建筑材料。本发明利用超临界CO2矿化工艺将钢渣和全尾矿制备成建筑材料，有效解决了废弃物污染的问题，并且，制备的建筑材料还具有较高的力学性能，可以应用在不同的建筑领域，是未来建筑材料领域的一项有前景的技术。
System, method and product for preparing building material by synergistically mineralizing carbon dioxide through steel slag
一种钢渣协同矿化二氧化碳制备建筑材料的系统、方法及产品
ZHANG JINGWEN (author) / YU WENJING (author) / ZHAO YUHUI (author) / WANG YANFENG (author) / LI LEI (author)
2023-10-10
Patent
Electronic Resource
Chinese
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