Abstract
Process of “high temperature carbonization and low temperature chlorination”, which was considered to be one of the most promising technologies, could extracte more than 70% titanium from the furnace slag containing TiO2 10% - 30%. TiC-containing slag was the product of high temperature carbonization, and to meet the requirement of the following chlorination process, it needs to be crushed and grounded to a suitable size distribution. The air jet pulverization of TiC-containing slag was studied in this paper. On the one hand, By CFD numerical simulation, the distribution regularity of nozzle flow field about the main crushing equipment was obtained with different throat diameters and crushing gas pressures. On the other hand, the influences of nozzle throat diameter, crushing pressure, and collision angles on the particle size of the powder were studied by experiment. With the better parameters, the particle size distribution of the product powder was uniform.
Highlights
Vanadium-titanium magnetite is a kind of complex ore, which contains many valuable elements, such as Fe, Ti and V
In the present utilization way of the vanadium-titanium magnetite, the raw ore is first dealed with a mineral separation process to obtain the iron concentrate, and the obtained tailing is further beneficiated to obtain the ilmenite concentrate
Titanium dioxide is concentrated 45%-55% the ilmenite is smelted by electric furnace, after which the ilmenite is reduced to iron and the slag contained titanium dioxide 70%-85%
Summary
Vanadium-titanium magnetite is a kind of complex ore, which contains many valuable elements, such as Fe, Ti and V. In the present utilization way of the vanadium-titanium magnetite, the raw ore is first dealed with a mineral separation process to obtain the iron concentrate, and the obtained tailing is further beneficiated to obtain the ilmenite concentrate. The Fe2O3 is gathered to 50%-60%, and by blast furnace smelting, Fe2O3 is reduced to iron, at the same time, other materials form blast furnace slag contained TiO2 10%-30% [1]. At present, this kind of slag is regarded as industrial wastes, and leads to great loss of titanium resources.
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