冶金烧结烟气净化和联产氯化钾技术研究及示范

闫新平 郭占成 刘竹焕 吴香琦

摘 要：中国是个钾资源严重短缺的国家，而钢铁冶金烧结除尘灰因含钾含量高而排放弃用，既造成资源浪费，又造成严重环境污染。本课题主要研究烧结电除尘灰的物理化学性质的分布规律，研究各级电除尘灰的物化性质及其对提取氯化钾工艺的影响规律，提出烧结烟气电除尘灰分级收集和回收利用的方案，为烧结电除尘灰的合理利用提供技术参数；研究典型钢铁企业烧结电除尘灰的浸取制卤技术、卤水除杂净化技术、多组分溶液体系K-Na分步结晶技术，研发以烧结烟尘为原料制备KCl的工业示范装备与技术集成，建立年处理24万吨烧结电除灰的示范工程，达到经济、环保、稳定运行技术水平，为解决我国钾资源问题开辟一条新的资源途径，并实现难处理冶金粉尘的高效循环利用。

关键词：冶金 烧结烟尘 氯化钾

Abstract：China is a country of potassium resources serious shortage， and iron and steel metallurgy sintering dust because of high potassium content and give up， cause resource waste， and cause serious environmental pollution. This subject mainly research the sintering of the electric dust distribution， physical and chemical properties of the electric dust ash at all levels of physical and chemical properties， its influence on the extraction of potassium chloride process， put forward the electric sintering flue gas ash level collection and recycling solution， for the rational use of sintering electric dust ash provide technical parameters； Research typical sintered iron and steel enterprise of electric dust ash leaching system halogen technology， in the brine purification technology， multicomponent solution system K - Na fractional crystallization technology， research and development in sintering dust as a raw material preparation of KCl industrial demonstration equipment and technology integration， establish processing 240000 tons of electric ash sintering demonstration project， to achieve economic， environmental protection and stable operation of the technical level， to solve the problem of potassium resources open up a new resource way， and realize the difficult of metallurgical dust and efficient recycling.

Key words：metallurgical Sintering smoke Potassium chloride

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