OBTAINING GRANULAR CALCIUM NITRATE BY NITRIC ACID DECOMPOSITION OF ZARBANT MARBLE.

Abstract

Abstract. Background. The need for calcium and its compounds, due to their widespread use, is constantly growing, and methods of processing calcium-containing minerals are of both scientific and practical importance. marble and limestone, which have a high calcium content and are widespread in the Earth's crust, are more promising raw materials for obtaining calcium from it. Acid decomposition and mechanical chemical activation of marble and limestone from different mines were studied. Uzbekistan has its own large marble mine - Zarbant, where CaO is more than 52.16%, which is a promising raw material for the production of calcium nitrate in the republic