Obtaining modified sorbents based on natural raw materials of Kazakhstan and research of their properties

T. Surkova; B. Abdikerim; A. Berkinbayeva; M.N. Azlan; Zh.A. Baltabekova

doi:10.31643/2022/6445.25

Authors

T. Surkova Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan
B. Abdikerim Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan
A. Berkinbayeva Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan
M.N. Azlan University Pendidikan Sultan Idris, Malaysia
Zh.A. Baltabekova Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

DOI:

https://doi.org/10.31643/2022/6445.25

Keywords:

carnallite, Chelkar deposit, potash fertilizer, washing, decomposition, evaporation

Abstract

With the huge explored reserves of potash salts in Kazakhstan, there is still no production of potash fertilizers, the demand for which is constantly growing. In this regard, research of processing of the largest Chelkar deposit ore into potash fertilizers and salts is an urgent problem. The article presents the research results of washed potash ore decomposition with nitric acid and nitric acid suspension filtration. The filtering properties and granulometric composition of the insoluble residue were studied, on what basis the decomposition mode with precipitate double washing was determined. To ensure good suspension filterability, washed, uncalcined ore should be used. Tests of a by-product, gypsum, as a gypsum binder were carried out, which confirmed its compliance with the normally hardening gypsum binder of the G-2 B grade. Advantage of the obtained gypsum is its environmental friendliness. Salts, which are chlorine-free water-soluble potassium-magnesium fertilizers have been obtained by crystallization from nitric acid solution. On the basis of results of experimental-and-laboratory tests, a basic flow scheme has been developed for obtaining potash and complex potassium-nitrogen-magnesium fertilizers from the Chelkar deposit ore.

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Author Biographies

T. Surkova, Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

Candidate of technical sciences, a leading researcher of a laboratory of special methods of hydrometallurgy named after B.B. Beisembayev, Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

B. Abdikerim, Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

PhD doctoral student with a degree in Metallurgical Engineering, Junior researcher of a laboratory of special methods of hydrometallurgy named after B.B.Beisembayev, Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

A. Berkinbayeva, Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

Candidate of technical sciences, a head of chemical analytical laboratory, Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

M.N. Azlan, University Pendidikan Sultan Idris, Malaysia

Physics Department, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Tanjung Malim, Perak, 35900, Malaysia

Zh.A. Baltabekova, Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

PhD, Institute of Metallurgy and Ore Beneficiation, Satbayev University, Almaty, Kazakhstan

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