What is Soft Rock Phosphate?
Soft rock phosphate is a by-product of the hard rock phosphate mining industry. Hard rock phosphate, also known as tri-calcium phosphate, is treated with sulfuric acid to produce super phosphate . The phosphate content is reduced to a water-soluble form, and the sulfur bonds with the calcium to form gypsum . To produce triple super , the super phosphate is further treated with phosphoric acid to strip out the gypsum and produce a concentrated form of soluble phosphate. Chemical gypsum is a by-product of this refining process. Soft rock phosphate is the soft, colloidal clay that lies between the various layers of hard rock phosphate. This colloidal clay is washed off and accumulated in settling ponds during the mining process. The phosphate source is completely natural, and it is in fact a truly remarkable fertiliser. It provides tremendous benefits to soil, microbe, and plant life. In contrast to the chemical phosphates, Nutri-Phos improves soil structure, providing ideal microbe condi
