转炉LT粉尘干式冷压块技术研究及工业应用

Research and Application of Dry Cold-Briquetting Technology for Converter LT Dust

转炉LT粉尘具有温度高、金属化程度高、易自燃等特性,造成其处理及综合利用难度很大。本文在综合干式热压块和湿式冷压块技术优点的前提下,采用旋风消解、配加骨料及应用新型粘结剂等措施,开发了一种适合LT粉尘特性的新型处理工艺——干式冷压块技术,并在太钢建成投产了一套年产12万t的生产线,将所生产的粉尘压块代替冷却废钢、矿石或造渣剂,成功地循环应用于转炉冶炼,获得了良好的经济效益。

Converter LT dusts are high in temperature, rich in metallics, liable to spontaneous ignition, and thus difficult in treating and utilizing：On the base of synthesizing the advantages of both dry hot-briquetting and wet cold- briquetting, a new technology, i.e. , the dry cold-briquetting technology for treating and reusing the dusts by adopting some measures as cyclone slaking, adding aggregates and new binders, was developed. A production line using this technology to produce 120, 000 tonnes of briquettes per annum has been built and operated in Taiyuan Iron and Steel Company. The briquettes produced can he used to substitute scrap iron, iron ores or flux.