钛石膏及废酸中“硫-钙”资源的高值化利用  

Value-adding Utilization of Sulfur-calcium Resources in Titanium Gypsum and Spent Acid

作　　者：张金增 闫永 张建明 朱青峰 高强 ZHANG Jin-zeng;YAN Yong;ZHANG Jian-ming;ZHU Qing-feng;GAO Qiang(Shandong Lubei Group,Wudi 251909,China;Wudi County Ecological Environment Monitoring Center,Wudi 251900,China)

机构地区：[1]山东鲁北企业集团总公司,山东无棣251909 [2]无棣县生态环境监控中心,山东无棣251900

出　　处：《硫磷设计与粉体工程》2024年第3期41-43,I0002,共4页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

基　　金：山东省重大科技创新工程项目(项目编号2019JZZY010505)。

摘　　要：硫酸法钛白粉副产的钛石膏和废硫酸的产量大、利用率低。介绍了两步法中和钛白酸性废水新工艺、磷酸络合脱钛和硫酸浓差结晶除铁新技术,解决了大量钛石膏堆存和钛白废酸资源利用两大问题,实现了其中硫、钙资源的高值化循环利用,产生了良好的社会效益、经济效益和环境效益。The production volumes of titanium gypsum and spent sulfuric acid,which are by-products of titanium dioxide in sulfuric acid process,are large and the utilization rate is low.The new process of two-step neutralization of titanium dioxide acid wastewater,new technology of phosphoric acid com-plexation for titanium removal and sulfuric acid concentration difference crystallization for iron removal are presented,which addresses the two major prob-lems of large-scale storage of titanium gypsum and utilization of titanium dioxide spent acid resources,achieving the value-adding recycling of sulfur and calcium resources,with good social,economic and environmental benefits.

关 键 词：钛石膏 钛白废酸 钙硫资源回收 高值利用 

分 类 号：TQ177.375[化学工程—硅酸盐工业]