Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-iron red mud suspension roasting pre-reduction-electric furnace smelting all-component utilization method
A high-iron red mud suspension roasting pre-reduction-electric furnace smelting all-component utilization method belongs to the technical field of mineral processing and metallurgy and comprises the following steps that high-iron red mud is subjected to magnetic separation, drying and smashing, is fed into a multi-stage cyclone preheating and drying system, and enters a roasting main furnace to be heated, oxidized and decomposed after being preheated and dried; a high-temperature solid material obtained after gas-solid separation enters a reduction reactor, and high-temperature flue gas returns to be preheated and dried; air and pulverized coal are introduced into an inlet of the reduction reactor to heat and reduce solid materials, formed pre-reduced products flow out of a discharge port, and high-temperature gas returns to be combusted to supply heat; and mixing the pre-reduced product with a flux, smelting to obtain molten iron and slag, respectively discharging the molten iron and the slag, taking the slag as clinker for producing aluminate cement, taking the molten iron as qualified pig iron for steelmaking, and returning electric furnace gas to combust and supply heat. According to the method, efficient pre-reduction and synchronous drying dehydration of the high-iron red mud can be achieved, the heat and energy recycling efficiency is high, and all-component comprehensive utilization of the high-iron red mud is achieved.
一种高铁赤泥悬浮焙烧预还原‑电炉熔炼全组分利用的方法，属于矿物加工及冶金技术领域，步骤如下：高铁赤泥经磁选、烘干、打碎，给入多级旋风预热干燥系统，预热干燥后进入焙烧主炉加热氧化分解；气固分离后得到高温固体物料进入还原反应器，高温烟气返回预热干燥；还原反应器的入口分别通入空气和煤粉，对固体物料进行加热和还原，形成预还原产品从出料口流出，高温气体返回燃烧供热；预还原产品与熔剂混合后进行熔炼得到的铁水和炉渣分别排出，炉渣作为生产铝酸盐水泥的熟料，铁水作为合格的炼钢用生铁，电炉煤气返回燃烧供热。本方法可实现高铁赤泥的高效预还原与同步干燥脱水，热量、能源循环利用效率高，实现了高铁赤泥的全组分综合利用。
High-iron red mud suspension roasting pre-reduction-electric furnace smelting all-component utilization method
A high-iron red mud suspension roasting pre-reduction-electric furnace smelting all-component utilization method belongs to the technical field of mineral processing and metallurgy and comprises the following steps that high-iron red mud is subjected to magnetic separation, drying and smashing, is fed into a multi-stage cyclone preheating and drying system, and enters a roasting main furnace to be heated, oxidized and decomposed after being preheated and dried; a high-temperature solid material obtained after gas-solid separation enters a reduction reactor, and high-temperature flue gas returns to be preheated and dried; air and pulverized coal are introduced into an inlet of the reduction reactor to heat and reduce solid materials, formed pre-reduced products flow out of a discharge port, and high-temperature gas returns to be combusted to supply heat; and mixing the pre-reduced product with a flux, smelting to obtain molten iron and slag, respectively discharging the molten iron and the slag, taking the slag as clinker for producing aluminate cement, taking the molten iron as qualified pig iron for steelmaking, and returning electric furnace gas to combust and supply heat. According to the method, efficient pre-reduction and synchronous drying dehydration of the high-iron red mud can be achieved, the heat and energy recycling efficiency is high, and all-component comprehensive utilization of the high-iron red mud is achieved.
一种高铁赤泥悬浮焙烧预还原‑电炉熔炼全组分利用的方法，属于矿物加工及冶金技术领域，步骤如下：高铁赤泥经磁选、烘干、打碎，给入多级旋风预热干燥系统，预热干燥后进入焙烧主炉加热氧化分解；气固分离后得到高温固体物料进入还原反应器，高温烟气返回预热干燥；还原反应器的入口分别通入空气和煤粉，对固体物料进行加热和还原，形成预还原产品从出料口流出，高温气体返回燃烧供热；预还原产品与熔剂混合后进行熔炼得到的铁水和炉渣分别排出，炉渣作为生产铝酸盐水泥的熟料，铁水作为合格的炼钢用生铁，电炉煤气返回燃烧供热。本方法可实现高铁赤泥的高效预还原与同步干燥脱水，热量、能源循环利用效率高，实现了高铁赤泥的全组分综合利用。
High-iron red mud suspension roasting pre-reduction-electric furnace smelting all-component utilization method
一种高铁赤泥悬浮焙烧预还原-电炉熔炼全组分利用的方法
HAN YUEXIN (Autor:in) / YU JIANWEN (Autor:in) / LI PEIYU (Autor:in) / LI YANJUN (Autor:in) / GAO PENG (Autor:in) / SUN YONGSHENG (Autor:in) / JIN JIANPING (Autor:in)
09.04.2024
Patent
Elektronische Ressource
Chinesisch
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