Method for preparing primary titanium dioxide for pigment by decomposing vanadium titano-magnetite ironmaking slag with hydrochloric acid

The invention discloses a method for preparing a titanium dioxide primary product for pigment by decomposing vanadium titano-magnetite ironmaking slag with hydrochloric acid. The rutile type titanium dioxide for the pigment is produced by utilizing the vanadium titano-magnetite iron-making slag, so that the resource utilization rate of titanium in the vanadium titano-magnetite is increased, the application field of byproducts is expanded, and the problems of environmental protection and resource waste caused by stockpiling of the vanadium titano-magnetite iron-making slag at the present stage are solved. 本发明公开一种盐酸分解钒钛磁铁矿炼铁渣制备颜料用钛白粉初品的方法。利用钒钛磁铁矿炼铁渣生产颜料用金红石型钛白粉，提高了钒钛磁铁矿中钛的资源利用率，扩大了副产物应用领域，解决现阶段钒钛磁铁矿炼铁渣堆存所带来的环保和资源浪费问题。