PROCESSING AQUEOUS TITANIUM SOLUTIONS TO TITANIUM DIOXIDE PIGMENT
摘要
A hydrometallurgical process is provided for producing pigment grade TiO2 from titanium containing solutions. Generally, the solution is an aqueous solution. The process includes hydrolyzing the solution via complete evaporation in well-controlled conditions of temperature to form titanium oxide of well-defined characteristics. The hydrolyzing can be achieved by spray hydrolysis in a spray dryer. After hydrolyzing, the titanium oxide is calcined to transform the titanium oxide to the desired form of titanium dioxide. The titanium dioxide can be either anatase or rutile. Following calcination, the titanium dioxide is milled to provide the desired particle size distribution and then finished.
申请公布号
WO0100530(A1)
申请公布日期
2001.01.04
申请号
WO2000US16360
申请日期
2000.06.14
申请人
BHP MINERALS INTERNATIONAL, INC.
发明人
DUYVESTEYN, WILLEM, P., C.;SPITLER, TIMOTHY, MALCOME;SABACKY, BRUCE, JAMES;VINCE, ANDREW;PROCHAZKA, JAN