Process for making artificial rutile by leaching of mohsite hydrochloric acid

The invention relates to a process for making artificial rutile by leaching of mohsite hydrochloric acid and belongs to the technical field of metallurgy. The process includes using mohsite graded at 45-52% as raw materials, and distributing carbonaceous reducing agent for reducing roasting, pressure leaching, filtering, roasting, and regenerating of hydrochloric acid, so that impurity removal of mohsite and recycling of hydrochloric acid are effectively realized and artificial rutile is made. The process is characterized in that mohsite and carbonaceous reducing agent are uniformly mixed for reducing roasting, and leaching rate of impurities like silicon, iron, calcium and magnesium is increased; hydrochloric acid is regenerated by distilling leaching mother liquor and can be reused in leaching; filter slag can be roasted after pressurized leaching and filtering so as to obtain artificial rutile. The process has the advantages of high leaching speed, high impurity removal efficiency, high grade and recyclability of hydrochloric acid. In addition, the process is applicable to industrial production in the aspects of technique, equipment, economy and environment protection.