硼铁矿绿色化高效综合利用  

Green and High-efficiency Comprehensive Utilization of Paigeite

作　　者：张泽熙 杨艳春 吕晓姝[1] 王溪尧 ZHANG Ze-xi;YANG Yan-chun;LV Xiao-shu;WANG Xi-yao(School of Biomedical and Chemical Engineering,Liaoning Institute of Science and Technology,Benxi Liaoning 117004,China)

机构地区：[1]辽宁科技学院生物医药与化学工程学院,辽宁本溪117004

出　　处：《辽宁科技学院学报》2021年第1期24-26,共3页Journal of Liaoning Institute of Science and Technology

基　　金：2019年辽宁科技学院校级大创项目(201911430026).

摘　　要：根据硼铁矿的化学成分和矿物组成,文章设计了硼铁矿清洁、高效及综合利用的工艺流程。该工艺通过硫酸铵焙烧硼铁矿,矿物中的镁、铁、铝和硼生成了可溶于水的产物,硅以不溶于水的二氧化硅形式存在。将焙烧产物加水溶出、过滤。含镁、铁、铝、硼等的滤液与以含二氧化硅为主的硅渣分离。根据镁、铁和铝等生成沉淀的pH值不同,向溶液中加入NH 3等碱性物质,调节溶液的pH值,将镁、铁和铝等分步沉淀,分离提取后的滤液经蒸发结晶,分离出硫酸铵晶体,硫酸铵返回焙烧。硼铁矿中的有价组元得到分离提取利用,进一步深加工成产品,化工原料循环利用。In this paper,a clean and high-efficiency comprehensive utilization process of paigeite is proposed considering the associated chemical composition and mineral structure.In the process,paigeite is roasted with ammonium sulfate and magnesium,iron,aluminum,as well as boron in paigeite are all transformed into water soluble products.However,silicon still remains in the form of insoluble silica.The roasting products are then dissolved into water.After filtration,magnesium,iron,aluminum as well as boron are separated from silica.According to different pH values for precipitating magnesium,iron,aluminum,as well as boron,different amounts of alkaline materials such as NH 3 are added into the solution to precipitate and separate the species in a stepwise manner.Finally,crystals of ammonium sulfate that are obtained by evaporating the solution is reused in the roasting procedure.Using the current process,the valuable species in paigeite can be extracted and then transformed further into corresponding products.Also,the raw chemical material is recycled.

关 键 词：硼铁矿 硫酸铵 焙烧 循环利用 

分 类 号：TF822[冶金工程—有色金属冶金]