硫酸法钛白废弃物硫酸亚铁的循环利用

Recycling Utilization of Waste Ferrous Sulfate from Titanium Dioxide by Sulfuric Acid Method

提出一种将硫酸法钛白粉生产过程中废弃的硫酸亚铁回收,并与硫磺或硫铁矿混合掺烧,制备工业硫酸的工艺,解决硫酸法钛白生产过程中排放的固体废弃物—硫酸亚铁的处理难题,同时,产出的硫酸又可循环用于钛白粉生产,构建硫酸法钛白粉循环经济生产模式。该工艺已成功运用于国内多套钛白粉装置,使硫酸法钛白粉生产装置大型化得以实现。

This paper presents a process for the recovery of waste ferrous sulfate from sulfuric acid titanium dioxide production process and mixed and burnt with sulfur or pyrite to prepare industrial sulfuric acid process to solve the treatment problem of solid waste-ferrous sulfate discharged during titanium dioxide production by sulfuric acid method. At the same time,the output of sulfuric acid can be recycled for the production of titanium dioxide to build recycling economy production mode of titanium dioxide production by sulfuric acid method. The process has been successfully used in the domestic multi-sets of titanium dioxide plants,so that the large-scale titanium dioxide production plant by sulfuric acid process can be achieved.