Thermal Activation of Phosphate Raw Materials from Aznek Ores

Abstract

The essense of this study is to investigate the microstructure and mechanical properties  of  Aznek phosphorites  mixed  alkali metal salts such as sodium and potassium  at  different  compositions. This a low grade raw material on phosphorus and rich in carbonate and chlorine is not suitable for acid processing. To obtain high-quality phosphate fertilizers from raw materials, it must be pre-enriched. In the phosphate plant carried multistage enrichment: crushing, dry dressing, washing from chlorine, sintering to remove carbon dioxide. One of the perspective directions of the processing such type phosphate raw material is a thermal  treatment, which based in destruction of unassimilable by plants the crystalline structure of mineral under thermal activation.