Research of the composition of low-rated phosphorites of the aksay deposit as a сomponent of fertilizer

Abstract

The article presents the results of differential thermal and X – analyses of dolomitized phosphatesiliceous raw materials of the Aksai deposit. When conducting experimental studies of label materials, modern methods of X-ray phase, differential thermal analysis and infrared spectrum were used. Mineral-petrographic analysis was studied on microscopes MIN8 and MIN9, using the mineral composition of samples and refractive indices. The X-ray analysis was performed on the Avatar 370 Csl spectrometer in the range 4000-300 cm-1 using compressed tablets of the studied samples. Diffractometric analysis was carried out on a D8 Advance diffractometer (Bruker), with the processing of the obtained diffractogram data and the calculation of interplane distances was carried out using EVA software, and differential thermal analysis of dolomitized phosphorous raw materials on a Paulik-Paulik, Erdeyderivatograph (IOM, Hungary). To date, the use and processing of minerals from phosphate deposits in the Karatau basin has led to the depletion of ore reserves, so today the phosphorus industry in our country is experiencing a shortage of highquality phosphate raw materials and needs selective production. This problem leads to a decrease in the quality of phosphorus fertilizers and the formation of a large amount of waste that creates a harmful anthropogenic load on the environment. And these wastes are not disposed of, so the issue of their involvement in technological and environmental industrial processing remains relevant. One of the promising areas of processing such waste is their use as raw materials for the production of mineral fertilizers