Abstract
The article presents the research findings obtained in deep integrated processing of rebellious high-potassium aluminum silicates from the Kalyum deposit within the Synnyr alkaline massif— synnyrite—with production of alumina as well as potassium and magnesium sulfates. The introduction of magnesium-bearing mineral—dolomite—as an additive at the stage of thermochemical decomposition of the acid-resistant minerals in the initial raw material (K-feldspar group) provides improved efficiency of the processes due to cheapening of baking, increased marketable production and reduced solid waste. It is found that leaching of activated synnyrite by 60% sulfuric acid promotes deposition of the silicon component as amorphous silica, which facilitates the further processing of pregnant potassium-, magnesium- and aluminium-bearing sulfuric acid solutions with marketable production.
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Russian Text © The Author(s), 2019, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2019, No. 6, pp. 165–171.
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Antropova, I.G., Alekseeva, E.N. & Budaeva, A.D. Integrated Processing Method for Synnyrite with Production of Alumina and Potassium Sulfate. J Min Sci 55, 1007–1012 (2019). https://doi.org/10.1134/S1062739119066393
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DOI: https://doi.org/10.1134/S1062739119066393