固态还原钛铁矿生产钛渣新技术

A new solid-state reduction technology of ilmentite to produce titanium slag

钛铁矿的还原热力学表明,钛铁矿的还原难度大于普通铁矿。动力学研究表明,通过粉体细化,可以加速钛铁矿的还原速度;通过晶粒长大技术将还原后的细微铁晶粒长大到一定粒度,通过简单磁选,即可得到铁产品和钛渣。开发的钛铁矿固态还原与晶粒长大新工艺具有反应温度低、无需高温熔分等特点,从而实现高效率、低能耗及低成本生产钛渣和铁产品。

The thermodynamics of ilmentite reduction shows that the reduction of ilmentite is more difficult than the common iron ore. The dynamic study shows that the ilmentite reduction rate could be accelerated when il- mentite powder is refined further. When the reduced iron grain grows to a certain particle size by ferrite grain growth, the iron nugget and high titanium slag could be obtained by simple magnetic separation. The new tech- nology of solid-state ilmentite reduction and ferrite grain growth has the characteristic of low-temperature reduc- tion, it eliminates the electric smelting process, and the technology realized high efficiency, low-energy consump- tion, low cost production of titanium slag and iron nugget.