Patent WO2014045301A2 - A process for preparing phosphates .Mar 27, 2014 . Rock phosphate is powdered in a ball mill to fine powder with up to 75% of . Try the new Google Patents, with machine-classified Google Scholar . wherein said powder is prepared by grinding rock phosphate in a ball mill.machine of grinding of rock phosphate,effect of intensive grinding on the physicochemical properties and .types of mills are employed in the treatment of phosphate rocks (Heinicke 1977; . comparison with other grinding machines, is characterized by high reserve of.
machine of grinding of rock phosphate