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Preparing Ferrosilicon Alloy with Copper Slag

机译：用铜渣制备硅铁合金

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Copper slag is a by-product obtained during smelting of copper from copper ores. In China, for one ton of metal production about 2.2 tons of copper slag was generated, and approximately 15 million tons slag is produced in 2013. Dumping and disposal of such huge quantities of slag will cause environmental and space problems. Most importantly, copper slag can not be made full use of to maximize its value. In this study, copper slag was used to take the place of scrap iron and part of silica in traditional process and to produce FeSi alloy as the main material. Utilizing silica and copper slag as the raw materials and coke as the reducing agent, FeSi45 was produced in the induction furnace. In addition, the effect of different n(C)/n(O) on FeSi45 has been investigated. Increasing n(C)/n(O) is beneficial to form the stable phase of FeSi. Meanwhile, n(C)/n(O) greatly affects the reduction and recovery of silicon than iron. When n(C)/n(O) equals 1.10, the recovery of silicon and iron is about 77 and 95%, respectively.
机译：铜渣是在铜矿冶炼期间获得的副产物。在中国，为一吨金属产量产生了约2.2吨铜渣，2013年生产了约1500万吨渣。倾销和处置这么大量的渣将导致环境和空间问题。最重要的是，铜渣不能充分利用来最大化其价值。在这项研究中，铜渣用于在传统过程中取代废铁和一部分二氧化硅，并产生FeSi合金作为主要材料。利用二氧化硅和铜渣作为原料和焦炭作为还原剂，在感应炉中产生FESI45。此外，研究了不同N（c）/ n（o）对fesi45的影响。增加n（c）/ n（o）有益于形成Fesi的稳定阶段。同时，n（c）/ n（o）大大影响硅的减少和恢复而不是熨斗。当n（c）/ n（o）等于1.10时，硅和铁的回收率分别为约77和95％。

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