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
张金增 1闫永 1张建明 2朱青峰 1高强1
作者信息
- 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
- 折叠
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.
Abstract
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Key words
titanium gypsum/titanium dioxide spent acid/calcium sulfur resource recovery/value-adding utilization引用本文复制引用
基金项目
山东省重大科技创新工程项目(2019JZZY010505)
出版年
2024
NETL
NSTL
万方数据