Kinetics of reaction of roasting of soda ash and ilmenite ore concentrate for formation of sodium titanates
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Alkaline metals and hydrogen titanates are of great interest for possible applications. The soda ash and Rosetta ilmenite ore concentrate briquette were investigated. The kinetic of formation of sodium titanate was studied in the temperature range 700°C to 900°C.
Sodium titanates and peroxotitanates are inorganic ion exchangers that exhibit strong affinities towards a wide range of metals. Elvington et al. indicated that both sodium titanates and peroxotitanates have shown to be effective for the removal of a wide range of metal ions from neutral and acidic solutions. Hobbs indicated that sodium titanates exhibit good affinity for adsorption of noble metal, mercury and cadmium compound from water. Sodium titanates and peroxotitanates may find use in treating patients with toxic levels of metals, as therapeutic agents for treating cancer and bactericides for world treatment and in dentalmaterials. Walker and Schmitz used monosodium titanates for the removal of strontium and plutonium from high-level waste solution. Alkaline metals and hydrogen titanates are also of great interest for possible applications such as photocatalysts as fuel cell electrolytes or cation exchangers in the treatment of radioactive liquid waste. Sodium titanate glycolate complex was prepared by heating at temperature 198°C for 6 hours and the sodium titanate glycolate precursor decomposed on heating at 900°Cto form nanorods sodium titanates (Na2Ti6O13) which has good photocatalytic activity for the decomposition of 4-chlorophenol in an aqueous slurry under UV radiation. Nanostructured alkali titanates are versatile materials that possess a variety of physical and chemical properties that can be tailored allowing their use in many application including catalysis and lithium ion batteries.It was reported that the alkali roasting of titaniferrous materials offered several advantages including the zero process wastes compared to the conventional process for beneficiation of TiO2 ores and that in soda ash roasting the formation of liquid phase is common problem that results in product granulation, formation of rings on the kiln walls and lump formation. Morsi et al indicated that sintering of ilmenite ore in the presence of certain mole ratio of sodium oxide (2.5) with respect to titanium dioxide followed by roasting at 1000°C.