不锈钢生产中含铬固体废弃物的回收利用

不锈钢行业每年会产生大量含铬固废。未来中国对铬资源有着极大的需求,需要大量进口铬资源。回收不锈钢废料中的铬资源不仅能缓解中国对铬资源的需求,对环境保护也有积极的意义。目前对含铬不锈钢废料的解毒处理方法以还原有毒Cr6+为主,主要包括干法还原法、湿法还原法和固化法。微晶玻璃是含铬不锈钢废料综合利用的方法之一,具有解毒彻底、处理量大等特点,是未来的重点发展方向,有着良好的应用前景。

Recycling of solid waste containing chromium in stainless steel production

Stainless steel industry generates a large amount of chromium-containing solid waste every year. China has a huge demand for chromium resources in the future and relies heavily on imports. Recycling chromium resources in stainless steel waste can not only alleviate the demand for chromium resources in China, but also have a positive significance for environmental protection. The current detoxification treatment method for chromium-containing stainless steel wastes is based on the reduction of toxic Cr6+, mainly including dry reduction method, wet reduction method and solidification method. Glass-ceramics has the characteristics of thorough detoxification and large processing volume. It is one of the methods for the comprehensive utilization of chromium-containing stainless steel waste with good application prospects,which is the future direction of key development.