Abstract
Alkaline metals and hydrogen titanates are of great interest for possible applications. The qualities of soda ash and Rosetta ilmenite ore concentrate pellets were investigated. The kinetic formation of sodium titanate via roasting of soda ash and ilmenite pellets and powder was studied in the temperature range of 800。C to 900。C.
Highlights
Titanium dioxide is the most widely used white pigment because of its high brightness and refractive index
Ilmenite with different amount of soda ash were pelletized in disc pelletizer with 6% of water
It is clear that both drop number and crushing strength increased as the percentage of soda ash increased
Summary
Titanium dioxide is the most widely used white pigment because of its high brightness and refractive index. Thavadkar and Jha [2] indicated that the worldwide TiO2 was extracted from natural ilmenite, rutile, and anatase minerals via the sulphate and chloride processes. Besides the waste management and disposal, there is a shortage of high-grade titanium dioxide minerals in nature, which yields much larger tonnages of sulphate and chloride wastes. In the soda ash roasting process, the formation of liquid phase is a common problem that results in product granulation, formation of rings on the kiln walls and lump formation. In this soda ash roasting process the mineral is mixed with sodium carbonate and heated above 1023 K in air. The oxidative roasting of ores yields several complex alkali compounds, some of which produce a liquid mixture above 1123 K
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