Method for recovering titanium dioxide from a raw material containing titanium dioxide and alumu00ecnio

摘要

Method for recovering titanium dioxide from a raw material containing titanium dioxide and alumu00ecnio ".A method for recovering titanium dioxide from a raw material containing additionally includes the steps of grinding aluminium raw material of titanium dioxide.The feed material into particles react with sulfuric acid under specified conditions, digest and filter cake containing sulfate material resulting titanila, if present.Treating solution for removing calcium and / or iron, remove precipitation aluminum such as aluminum sulfate ammonium sulphate solution hidrolizar the titanila remaining and,After washing the hydrolyzed, calcine the hydrolyzed to produce titanium dioxide.