Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Efficient energy-saving steel slag powder preparation method
The invention discloses an efficient energy-saving steel slag powder preparation method and belongs to the field of comprehensive utilization of steel making waste resources. The efficient energy-saving steel slag powder preparation method solves the technical problems that in the prior art, the fineness of steel slag powder is not high enough, cost is high, and equipment is prone to wear. The efficient energy-saving steel slag powder preparation method comprises the following steps of 1, coarse crushing, 2, roll extrusion, 3, primary magnetic separation iron removal and 4, fine grinding, wherein fine grinding comprises the four steps of grinding, drying, powder selecting and secondary magnetic separation iron removal, and a closed loop is formed. According to the steel slag powder machined by the adoption of the efficient energy-saving steel slag powder preparation method, the specific surface area is larger than or equal to 450 m<2>/kg, and the iron content of fine iron powder, as the by-product, is larger than or equal to 70%. The energy consumption is greatly lower than the level in the same industry, exhaust gas of an industrialized production line reaches the emission standard, zero discharge of wastewater is achieved, and the industrialized production line belongs to an environment-friendly type production line.
本发明公开了一种高效节能的钢渣粉制备方法，属炼钢废弃资源综合利用领域，解决现有技术中钢渣粉细度不够、成本较高、设备易磨损等技术问题。本发明一种高效节能的钢渣粉包括以下步骤：1、粗破碎；2、对辊挤压；3、第一次磁选除铁；4、细磨。其中细磨包括研磨、烘干、选粉、第二次磁选除铁等四个步骤，形成闭路循环。本发明加工出来的钢渣粉比表面积≥450 m/kg，副产品铁精粉含铁量≥70%，能耗大幅低于同行业水平，工业化生产线废气达标排放，废水零排放，属于环保型生产线。
Efficient energy-saving steel slag powder preparation method
The invention discloses an efficient energy-saving steel slag powder preparation method and belongs to the field of comprehensive utilization of steel making waste resources. The efficient energy-saving steel slag powder preparation method solves the technical problems that in the prior art, the fineness of steel slag powder is not high enough, cost is high, and equipment is prone to wear. The efficient energy-saving steel slag powder preparation method comprises the following steps of 1, coarse crushing, 2, roll extrusion, 3, primary magnetic separation iron removal and 4, fine grinding, wherein fine grinding comprises the four steps of grinding, drying, powder selecting and secondary magnetic separation iron removal, and a closed loop is formed. According to the steel slag powder machined by the adoption of the efficient energy-saving steel slag powder preparation method, the specific surface area is larger than or equal to 450 m<2>/kg, and the iron content of fine iron powder, as the by-product, is larger than or equal to 70%. The energy consumption is greatly lower than the level in the same industry, exhaust gas of an industrialized production line reaches the emission standard, zero discharge of wastewater is achieved, and the industrialized production line belongs to an environment-friendly type production line.
本发明公开了一种高效节能的钢渣粉制备方法，属炼钢废弃资源综合利用领域，解决现有技术中钢渣粉细度不够、成本较高、设备易磨损等技术问题。本发明一种高效节能的钢渣粉包括以下步骤：1、粗破碎；2、对辊挤压；3、第一次磁选除铁；4、细磨。其中细磨包括研磨、烘干、选粉、第二次磁选除铁等四个步骤，形成闭路循环。本发明加工出来的钢渣粉比表面积≥450 m/kg，副产品铁精粉含铁量≥70%，能耗大幅低于同行业水平，工业化生产线废气达标排放，废水零排放，属于环保型生产线。
Efficient energy-saving steel slag powder preparation method
一种高效节能的钢渣粉制备方法
XIE XIQIAO (Autor:in) / XIE LIANG (Autor:in) / LIN YONGDE (Autor:in) / ZHENG XUN (Autor:in) / LAI DASHUN (Autor:in) / QIU JING (Autor:in)
28.07.2020
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2022
Steel slag powder-ferromanganese slag powder composite admixture and preparation process thereof
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2015
Steel slag active powder concrete and preparation method thereof
| Europäisches Patentamt | 2016