Production process of titanium oxide

Zp sob v²roby oxidu titani it ho spo v v tom, e se ilmenitov ruda, obsahuj c oxid titani it² a oxidy eleza redukuje do t m ry, e alespo 92 % hmotn. oxid eleza p° tomn²ch ve zredukovan ilmenitov rud je ve form oxidu eleznat ho, na e se zredukovan ilmenitov ruda lou kyselinou s rovou maj c hmotnostn koncentraci 80 a 94 % za vzniku roztoku s ranu titani it ho a s ran eleza, k tomuto roztoku se p°id reduk n inidlo v mno stv , kter je ekvivalentn m n ne 4,0 % hmotn. kovov ho eleza, vzta eno na obsah eleza v ilmenitov rud , a z roztoku se vysr hydratovan² oxid titani it².\ The present invention relates to a process for the production of titanium oxide comprising digesting an ilmenite ore, containing titanium oxide and iron oxides, with sulfuric acid at concentration of 80 to 94 percent to form a solution of titanium sulfate and iron sulfates, and subsequently precipitating hydrous titanium oxide from the titanium sulfate solution, characterized in that said ilmenite ore has a composition such that at least 92 per cent by weight of the iron present in the ore is in the ferrous state and, if necessary, a reducing agent is added to the titanium sulfate and iron sulfate solution in an amount equivalent to less than 4.0 percent by weight metallic iron calculated with respect to said ilmenite ore.