A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a method for melting red mud in an electric furnace, and belongs to the field of solid waste resourceful treatment. The method comprises the following steps: adding a reducing agent, a binder, a flux and fly ash into red mud, mixing and granulating, preheating and drying by a chain grate after granulating, roasting in a rotary kiln after drying, and directly feeding roasted sand into an electric furnace; molten iron produced through reduction enters a pig casting machine through a discharging opening and is cooled and formed into iron ingots to be put in storage, and slag is subjected to water quenching to become an available building material. In the process, high-temperature flue gas generated by the electric furnace is sequentially conveyed to the rotary kiln and the chain grate by the electric furnace, the high-temperature flue gas exchanges heat with the materials to be roasted and dried respectively, and the flue gas subjected to heat exchange is exhausted into the atmosphere after being treated by a desulfurization and denitrification system and a bag-type dust removal flue gas treatment system. According to the method, iron metal in the red mud can be recycled, solid waste is fully utilized, meanwhile, the water-quenched slag can be used as a building material, and the stacking problem of the red mud is solved.
本发明提供一种电炉熔分赤泥的方法，属于固体废弃物资源化处理领域。本发明将赤泥配入还原剂、粘结剂、熔剂、除尘灰进行混料造粒，造粒后经链篦机预热干燥，干燥完成进入回转窑进行焙烧，焙烧后的焙砂直接送入电炉；还原产出的铁水经放出口进入铸铁机，冷却成型变成铁锭入库，矿渣经水淬变为可利用的建筑材料。此过程电炉产生的高温烟气由电炉依次输送到回转窑、链篦机，高温烟气与物料进行换热分别进行焙烧和干燥，换热完成的烟气经脱硫脱销、布袋除尘烟气处理系统处理完成后排入大气。本发明可对赤泥中的铁金属进行回收，充分对固废进行了利用，同时水淬渣可作为建筑材料，解决了赤泥的堆存问题。
The invention provides a method for melting red mud in an electric furnace, and belongs to the field of solid waste resourceful treatment. The method comprises the following steps: adding a reducing agent, a binder, a flux and fly ash into red mud, mixing and granulating, preheating and drying by a chain grate after granulating, roasting in a rotary kiln after drying, and directly feeding roasted sand into an electric furnace; molten iron produced through reduction enters a pig casting machine through a discharging opening and is cooled and formed into iron ingots to be put in storage, and slag is subjected to water quenching to become an available building material. In the process, high-temperature flue gas generated by the electric furnace is sequentially conveyed to the rotary kiln and the chain grate by the electric furnace, the high-temperature flue gas exchanges heat with the materials to be roasted and dried respectively, and the flue gas subjected to heat exchange is exhausted into the atmosphere after being treated by a desulfurization and denitrification system and a bag-type dust removal flue gas treatment system. According to the method, iron metal in the red mud can be recycled, solid waste is fully utilized, meanwhile, the water-quenched slag can be used as a building material, and the stacking problem of the red mud is solved.
本发明提供一种电炉熔分赤泥的方法，属于固体废弃物资源化处理领域。本发明将赤泥配入还原剂、粘结剂、熔剂、除尘灰进行混料造粒，造粒后经链篦机预热干燥，干燥完成进入回转窑进行焙烧，焙烧后的焙砂直接送入电炉；还原产出的铁水经放出口进入铸铁机，冷却成型变成铁锭入库，矿渣经水淬变为可利用的建筑材料。此过程电炉产生的高温烟气由电炉依次输送到回转窑、链篦机，高温烟气与物料进行换热分别进行焙烧和干燥，换热完成的烟气经脱硫脱销、布袋除尘烟气处理系统处理完成后排入大气。本发明可对赤泥中的铁金属进行回收，充分对固废进行了利用，同时水淬渣可作为建筑材料，解决了赤泥的堆存问题。
Method for melting red mud in electric furnace
一种电炉熔分赤泥的方法
2024-03-22
Patent
Electronic Resource
Chinese
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