湛江钢铁含铁二次资源返生产循环利用的系统性研究

Systematic Research on the Reproduction and Recycling of Iron-containing Secondary Resources in Baosteel Zhanjiang Iron and Steel Co.,Ltd.

现阶段,我国矿产资源紧缺,环保要求日渐提高,钢铁冶炼过程产生的富含铁、碳等有价元素的二次资源返生产利用迫在眉睫。国内现有研究中暂无钢铁冶炼二次资源100%厂内循环利用的实例。基于此,本文系统地梳理钢铁冶金含铁二次资源的利用瓶颈,并根据其物理化学特性将其返生产利用。实践表明,年回收铁素达91.1万t,实现了以"固废不出厂"为基础的城市钢铁生态圈。该研究将为炼钢行业内二次资源全方位返生产利用奠定基础。

At present,China’s mineral resources are in short supply,and environmental protection requirements are increasing day by day,the re-production and utilization of secondary resources rich in iron,carbon and other valuable elements produced in the iron and steel smelting process is imminent.There is no case of 100% in-plant recycling of secondary steel smelting resources in the current domestic research.Based on this,this paper systematically sorts out the bottlenecks in the utilization of iron-containing secondary resources in iron and steel metallurgy,and returns them to production and utilization according to their physical and chemical characteristics.Practice has shown that the annual recovery of ferrite reaches 911 000 tons,realizing an urban iron and steel ecosystem based on "solid waste not leaving the factory".This research will lay the foundation for the all-round re-production and utilization of secondary resources in the steelmaking industry.