冶金固废资源化利用现状及发展

冶金过程中会产生大量的冶金固废，但由于处理技术落后，大量冶金固废未能得到及时和有效的回收处理 ，而造成土壤、水重金属污染等环保问题。针对我国冶金行业的特点，分析了我国冶金固废的种类、来源 以及资源化处理与综合回收利用现状，介绍了冶金渣在钢渣磁选除铁、钢渣返烧结、钢渣水泥、钢渣、矿 渣、复合微粉、钢渣矿渣建材制品等方面的回收利用途径和优缺点，分析了高炉尘泥和炼钢尘泥的来源、 特性及回收技术，并总结了国内各钢厂在冶金过程中钢渣处理和冶金尘泥回收方面的处理技术，指出了目 前我国钢铁企业在固废资源综合利用上存在的不足，提出冶金固废的资源化处理的发展趋势，如拓展到海 洋生态保护、显热发电工程等新的领域。

The Utilization and Development Status of Metallurgical Solid Waste Resource

Metallurgical process has produced a great deal of metallurgical solid wastes.Due to the poor processing technology，these metallurgical solid wastes have not been recovered or treated promptly and effectively，and result in environmental problems，such as heavy metal pollution in soil and water.According to the characteristics of the metallurgical industry in China， the types and sources，as well as the treatment and comprehensive utilization of the metallurgical solid wastes，were analyzed.The recycling way，advantages and disadvantages in application of metallurgical slag to steel slag magnetic separation in addition to iron， steel slag to return composite powder sintering，steel slag，slag，steel slag cement，and building materials products were introduced.The source，characteristics and recovery technology of blast furnace dusts and steelmaking dusts were analyzed.In addition，several kinds of main steel slag processing technology and metallurgical dust slime recovery technology were pointed out，and the problems existing in the waste comprehensive utilization of resources on the iron and steel enterprises in China were given.The resource processing development trend of metallurgical solid wastes was put forwards，such as expanding to the Marine ecological protection，sensible heat power generation project and other new fields.