A study was made on the dispersive action by sodium silicate in the presence of the equivalent of Ca^(2+) concentration. The investigation included potentiometric titration, turbidity measurements, and frothability tests, supplemented by batch flotati...
A study was made on the dispersive action by sodium silicate in the presence of the equivalent of Ca^(2+) concentration. The investigation included potentiometric titration, turbidity measurements, and frothability tests, supplemented by batch flotation tests.
The test results revealed that sodium silicate was mixed calcium chloride solutions, calcium silicates were precipitated instantaneously These precipitates served as a protective coating on bubbles and stabilized the froth. The precipitates also removed impurity minerals and calcium bearing precipitates from quartz minerals by dispersing them. Therefore, sodium silicate depressed the accidental activation of quartz in the presence of Ca^(2+) during the batch flotation of phosphates.