Abstract
A mini-autoclave was used for on-line sampling and solid–liquid separation at elevated temperatures. The concentration of sodium titanate dissolved in sodium hydroxide and sodium aluminate solutions at elevated temperatures was measured. Results show that sodium titanate dissolved quickly in hydroxide and aluminate solutions at elevated temperatures. Sodium titanate concentration in sodium hydroxide solutions increased with increasing alkali concentration and temperature. The dissolution behavior of sodium titanate in sodium aluminate solutions was dependent on temperature and solution composition. Furthermore, sodium titanate concentration in sodium aluminate solutions was primarily dependent on the free alkali concentration and was also affected by alumina concentration.
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