Method for preparing pearlescent pigments from hydrochloric acid acidolysis solution of ilmenite by co-extraction

摘要

The present invention provides a method for producing one kind of pearl pigment coating material. The method of the present invention comprises dissolving titanium iron ions in titanium iron ion at a predetermined temperature and pressure using hydrochloric acid, further introducing hydrogen chloride gas to precipitate ferric chloride in the acid decomposition solution, Is extracted and concentrated in a multi-stage by separating it from other colored ions by a co-extraction method. Dichlorotitanyl chloride solution contains a solution containing Dichlorotitanyl chloride and a hydrated oxide containing iron component, Can be used for pigment coating materials and can be used for the production of titanium powder, and the hydrous oxides of iron can also be used for the preparation of ferric chloride and iron-based pearl pigment coatings which have already been oxidized after oxidation and iron oxide pigments.