PRODUCTION OF BARIUM CARBONATE-BARIUM PHOSPHATE MIXTURES FROM BARIUM SULFATE

摘要

1300501 Barium carbonate KNAPSACK AG 19 April 1971 [2 May 1970] 9855/71 Heading C1A Barium carbonate-barium phosphate mixtures are prepared by treating barium sulphate with excess of an aqueous sodium carbonate solution under pressure and at a temperature above 100‹ C., the barium sulphate being in the form of an aqueous suspension which also contains phosphoric acid and/or one or more soluble phosphates.