摘要
在高强度冶炼迅速发展的背景下,闪速冶炼技术呈现高投料量、高富氧浓度、高容积热强度、高镍锍品位等特性,为满足新的工艺要求,本研究对某镍冶炼厂闪速炉实施结构升级改造。针对炉体反应塔及沉淀池等关键部件不同位置的高热负荷、强冲刷等炉况,采用了多种形式的水套结构设计,并将侧吹浸没燃烧技术引入闪速炉贫化区,通过侧吹浸没喷枪为熔池提供动能和热能,改善贫化区中冶金过程的发生条件,强化炉渣还原。运行结果表明,本次升级将闪速炉年处理能力提升至85万t,反应塔处理量达到100 t/h。新型水冷结构有效保障了炉体在高负荷下的安全稳定运行;侧吹技术的应用显著改善了贫化区的冶金环境,为提升有价金属回收率奠定了基础,为同类设备的技术升级提供了实践参考。
Driven by the rapid development of high-intensity smelting,flash smelting technology is trending towards higher feed rates,oxygen enrichment,volumetric heat intensity,and matte grades.To meet these demanding process requirements,the study details a structural upgrade of a flash furnace at a nickel smelter.To address severe operational conditions,such as high thermal loads and intense erosion in critical components like the reaction shaft and settling chamber,a variety of advanced water jacket designs were employed.Furthermore,side-blowing submerged combustion technology was introduced into the slag cleaning zone.This technology utilizes submerged lances to inject kinetic and thermal energy into the molten bath,thereby improving metallurgical conditions and enhancing slag reduction.Operational results demonstrate that the new cooling structures have effectively ensured the safe and stable operation of the furnace under high loads.The application of side-blowing technology has significantly improved the metallurgical environment in the slag cleaning zone,laying a solid foundation for increasing the recovery rate of valuable metals.The study provides a valuable practical reference for the technological upgrading of similar furnaces.
作者
许欣
XU Xin(China ENFI Engineering Corporation,Beijing 100038,China)
出处
《有色设备》
2025年第5期41-47,共7页
Nonferrous Metallurgical Equipment
关键词
闪速炉
高强度冶炼
反应塔
铜水套
侧吹浸没燃烧技术
强化还原
flash furnace
high-intensity smelting
reaction tower
copper water jacket
SSC
intensified reduction
