Sulfuric acid system Ti, Fe extraction of basic research Abstract: titanium dioxide is an important white paint, the total number of white pigment used in 80 percent, it is the most important of titanium products, in modern industry, agriculture, defense, science and technology in many fields have a wide range of applications, and People's lives and the national economy are closely At present, the industrial production of titanium dioxide and sulphuric acid are the main chloride, the two methods have advantages and As technology and equipment, and other factors, even in China there are more than 90 percent of the titanium dioxide is used sulfuric acid method of Sulfuric acid method in the production of titanium white, generally by reducing the temperature of frozen liquid crystal titanium way to get rid of most of iron, and then through a washing and rinsing process to achieve the removal of products in the "Iron", and the actual processes in Production processes, products indicators volatile, both for water and acid, and in the process of hydrolysis Fe bound to be wrapped and an attachment, so difficult to This paper attempts to - TBP as a mixed system of extraction through solvent extraction process to further reduce frozen in liquid titanium after the iron content, and then liquid titanium to hydrolysis, this can be greatly reduced because the hydrolysis caused by iron and parcel of an attachment, and then Washed through the process of H3TiO3 washed to remove a small amount of iron content of which, by pure liquid titanium to improve the quality titanium Key words: Titanium Dioxide mixed extraction system in addition to iron