Rationality and the Sociology of Knowledge

Alkali metal ortho-, di-, or triphosphates or mixtures thereof are produced by continuously mixing concentrated phosphoric acid and alkali metal hydroxide solutions in a closed system, atomizing the resulting hot reaction mixture into a drying chamber by means of nozzles or the like atomizing means which are adapted, for instance, by properly selecting the orifice diameter of the nozzles, to maintain a minimum pressure preventing evaporation of water in the closed system, and drying of calcining the atomized reaction mixture in said drying chamber. A suitable equipment for carrying out this process is described. The process is more economical than the heretofore used processes.