Authors: M-C. Patoine, A. De Mori, K. Borowiec
Abstract
The leaching of titanium slag to enrich feedstock for the pigment industry leads to the production of an iron chloride rich spent liquor, similar to that produced by the ilmenite leaching or steel pickling plants, but that contains higher concentration of impurities such as MgCl2 or CaCl2. Since 1998, QIT uses a pyrohydrolysis regeneration process similar to that used by the steel industry to regenerate the waste solution.
