SULFAT KISLOTANI AMMONIY SULFATGA QISMAN ALMASHTIRISH BILAN MARKAZIY QIZILQUM FOSFORITLARIDAN EKSTRAKSION FOSFAT KISLOTA OLISH

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SULFAT KISLOTANI AMMONIY SULFATGA QISMAN ALMASHTIRISH BILAN MARKAZIY QIZILQUM FOSFORITLARIDAN EKSTRAKSION FOSFAT KISLOTA OLISH

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Background. Processing of washed, burnt phosphate raw materials of Central Kyzylkum for extraction phosphoric acid is associated with a number of problems, one of which is a large consumption of sulfuric acid per unit of phosphoric anhydride compared to other raw materials. Ammonium ions intensify the filtration process of phosphogypsum, and sulfate ions bind calcium to dihydrophosphate, which can lead to a decrease in the consumption of sulfuric acid. Purpose. Intensification and development of resource-saving technology of extraction phosphoric acid from phosphorites of Central Kyzylkum with partial replacement of sulfuric acid with ammonium sulfate. Methodology. Evaluation of the effectiveness partial replacement sulfuric acid on the technological parameters production extraction phosphoric acid: the influence of ammonium sulphate on the composition of the acid, the physical properties of pH, density, speed filtration of the sulfur-fosforecente pulp and composition of phosphogypsum. Originality. We show the possibility of partial replacement of sulfuric acid with ammonium sulfate, reduce the heat effect of the sulfur-fosforecente decomposition of washed burned phosconcentrate Central Kyzylkum, improve the rate of filtration of the pulp, improve the technological coefficients of production and economy of sulphuric acid. Findings. Optimal rates of technological modes of obtaining extraction phosphoric acid of washed burned phosconcentrate Central Kyzylkum with partial replacement of sulfuric acid with ammonium sulfate, which improves the technological performance of the production. Highlights: * introduction of ammonium sulfate reduces the heat effect of decomposition of phosconcentrate; * the influence of ammonium sulfate on the extraction indices was revealed.

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# экстракция# extraction# серная кислота# sulfuric acid# мытый обожженный фосконцентрат# сульфат аммония# технологические показатели.# yuvib kuydirilgan foskonsеntrat# sulfat kislota# ammoniy sulfat# ekstraksiya# tеxnologik ko’rsatkichlar.# washed burnt concentrate# ammonium sulfate# technological parameters.

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https://eroi.uz/11.0030/A1219-0011

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