抄録
The chlorination of high-titania slag to give titanium tetra-chloride is of growing importance. The present work was done to study the effect of some factors on the chlorination process in presence of solid carbon as a reducing agent. The factors involve the temperature, flow rate, and particle size. A synthetic slag near in composition to the natural slag obtained from reduction smelting of titani-ferrous ores was chlorinated in a fluidized bed silica reactor. A pre-chlorination step was necessary to get rid of the non-volatile chlorides causing the sticking and agglomeration of fluidized slag particles.
It was found that the temperature and flow rate of Cl2 greatly affect the chlorination rate with points of maximum effect. Different particle sizes give distinctly different conversion curves with the smaller size giving higher conversion. The energy of activation was obtained from the Arrhenius plot as 19400 cal/mol.
