Current situation of resource utilization of waste acid from titanium dioxide production
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摘要: 钛白废酸中含有可观的资源,废酸的再加工与增值正逐渐成为钛颜料工业的焦点。针对硫酸法钛白副产废酸的回收与利用现状展开综述,主要介绍了废酸在提取金属元素、浸出金属元素、回收硫酸以及工业生产方面的应用,并在此基础上,对今后钛白废酸资源化利用的发展做了相关展望,以期为相关行业的从业者带来废酸利用方面的参考。Abstract: Waste acid after processing titanium dioxide contains valuable resources. The reprocessing and value-added of waste acid is gradually becoming the focus of titanium pigment industry. In this paper, the current situation of recovery and utilization of waste acid from titanium dioxide have been reviewed, mainly focusing on the application of waste acid in extracting metal elements, leaching metal elements, recovering sulfuric acid and industrial production. And then the future development of resource utilization of waste acid from titanium dioxide have been discussed.
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Key words:
- titanium dioxide /
- sulfuric acid process /
- waste acid /
- resource utilization
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表 1 钛白废酸的金属含量
Table 1. Metal contents in waste acid after processing titanium dioxide
mmol/L Fe Ti Mg Al Mn Ca V Sc 87.1 6.6 11.0 7.1 2.8 2.1 0.9 0.03 -
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