高速钢固体废物的再生研究

采用电热法回收高速钢固体磨屑废物中的合金并生产再生合金并对冶炼再生合金产品的工艺及影响产品质量的因素进行了研究。首先对高速钢磨屑进行预处理 ,去除杂质 ,得到精磨屑。冶炼采用的多元碱性渣系解决了炉渣的流动性问题 ;复合还原剂为理论配入量的 99%～ 10 0 %。研究结果表明 ,W和Mo回收率大于 96 % ,Cr及V回收率不低于 91%。冶炼回收的再生合金产品满足了炼钢的要求 ,并做到了二次资源的再生利用 ,减少了环境污染 ,符合国家产业政策 ,社会效益明显。

RESEARCH ON RECOVERY OF ALLOYS FROM SOLID WASTE OF HIGH SPEED STEEL

The goal was to recycle secondary alloys raw material from solid waste of high-speed-steel tool swarf by electrothermal process.The techniques and the factors affecting the quality of products were analyzed.For getting pure high-speed-steel tool grinding swarf,the pre-treatment was needed.The multi-alkaline slag could not only meet the need of high heat value,low oxidation and good fluidity,but also increase the recovery ratio of alloys and wipe out impurity.The compound reducing reagent was about 98%～100% of its theoretical consumption.The results showed that the quality of the secondary alloy raw material recycled from waste solid of high-speed-steel tool could meet the need of steel-making.From which remarkable social and economic benefits are achieved.