Transactions of the INDIAN CERAMIC SOCIETY Vol. 25 1966
A Rapid Method for Estimation of Silica in
Magnesite and Calcareous Materials
S. K. BHATTACHARYA AND B. C. SINHA
Pages : 46-48
DOI : 10.1080/0371750X.1966.10855553
Abstract
A rapid and accurate method for the determination of silica in magnesite and
other calcareous materials has been described. The method is based on the quantitative
precipitation of silica as K2 SiF6 from an acidic solution, hydrolysis of the precipitate
after neutralising the free acid with NaOH in cold and titration of the liberated HF
with a standard NaOH solution. Standard deviation of the results is found to be
0.0296% only. Several determinations can be completed within 4 hours.