Calcined Phosphate Fertilizer from Jhamarkotra Secondary Phosphate Ore and Rock Phosphate Beneficiation Plant Bulk Circuit Tail

Abstract

The secondary phosphate ore of RSMML 's Jhamarkotra rock phosphate mines have high iron content that renders it unsuitable for manufacturing of phosphatic fertilizers like SSP,DAP and phosphoric acid. This paper explores the feasibility of utilizing the secondary phosphate ore by thermal treatment, which involves calcination as well as fusion. The calcined and fused products both have good citrate solubility and thus have a potential to be used as a citrate soluble phosphatic fertilizer. This paper also deals some phosphate resources which are added during thermal treatment. These additives not only assist in the fusion and calcination but also improves soil fertility. These are more beneficial to the soil. Calcined dolomite tailing among these has a potential to be utilized as citrate soluble phosphate rich magnesium fertilizer