发明名称 |
Processing aqueous titanium chloride solutions to ultrafine titanium dioxide |
摘要 |
A hydrometallurgical process is provided for producing ultrafine or nano-sized titanium dioxide from titanium containing solutions, particularly titanium chloride solutions. The process is conducted by total evaporation of the solution, above the boiling point of the solution and below the temperature where there is significant crystal growth. Chemical control additives may be added to control particle size. Nano-sized elemental particles are formed after calcination. The titanium dioxide can be either anatase or rutile. Following calcination, the titanium dioxide is milled to liberate the elemental particles and provide a high quality nano-sized TiO2 with a narrow particle size distribution.
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申请公布号 |
US6440383(B1) |
申请公布日期 |
2002.08.27 |
申请号 |
US20000503365 |
申请日期 |
2000.02.14 |
申请人 |
ALTAIR NANOMATERIALS INC. |
发明人 |
DUYVESTEYN WILLEM P. C.;SPITLER TIMOTHY MALCOME;SABACKY BRUCE JAMES;PROCHAZKA JAN |
分类号 |
C01G23/053;C09C1/36;(IPC1-7):C01G23/047;C01G23/00 |
主分类号 |
C01G23/053 |
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