dicalcium phosphate making process,Processes for the manufacture of feed-grade dicalcium phosphate .Oct 26, 1976 . The combined process of DCP manufacture and phosphoric acid production minimizes any losses of P2 O5 normally encountered in the attack on rock phosphate by a mineral acid in the DCP manufacture since, according to the present invention, the reaction system for the manufacture of DCP implies an.US2043238A - Manufacture of di-calcium phosphate - Google PatentsIn addition, the resulting product has improved physical properties which make it more suitable for use as a fertilizer or as a concentrated fertilizer ingredient. For instance, fine calcium carbonate is treated with a sufiicient amount of phosphoric acid to convert it into mono-calcium phosphate, with the final stage being.
US2012436A - Process of making monocalcium phosphate - Google .PROCESS OF MAKING MONOCALCIUM PHOSPHATE Filed Sept. 6, 1932 Sheets-Sheet 4 INVENTORS Patented Aug. 27, 1935 PROCESS OF MAKING MONOCALCIUM PHOSPHATE Byramji D. Saklatwalla and Holbert Earl Dunn, Grafton, Pa., and Albert E. Marshall, Scarsdale, N. Y., assignors to Southern Mineral.Di-calcium phosphate by direct acidulation of phosphate rockaqueous solution of phosphoric acid and mono-calcium phosphate. The di-calcium phosphate was filtered off and dried. The filtrate was combined with phosphoric acid used in the preparation of superphosphate. Hughes and Cameron (25) proposed a process for producing di-calcium. phosphate by using sulfur dioxide.
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US2043238A - Manufacture of di-calcium phosphate - Google Patents
US2012436A - Process of making monocalcium phosphate - Google .
Di-calcium phosphate by direct acidulation of phosphate rock
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