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Synthesis of NPK fertilizer from low-grade phosphate raw materialстатья
- Авторы: Kareeva A., Besterekov U., Abdurazova P., Nazarbek U., Raiymbekov Y., Pochitalkina I.
- Журнал: International Journal of Chemical Reactor Engineering
- Том: 20
- Номер: 8
- Год издания: 2022
- Издательство: Berkeley Electronic Press
- Местоположение издательства: United States
- Первая страница: 805
- Последняя страница: 814
- Аннотация: The article presents the results of studies of the process of obtaining NPK fertilizer from low-grade phosphate raw materials with P2O5 of about 18%. Phosphate raw materials were leached with a mixture of nitric-phosphoric acids with the addition of potassium carbonate, which serves as a source of potassium in the final product. The main parameters determined were the content of the main nutrients P2O5:N:K2O, temperature and time of the leaching process. According to the graphicalmethod, the “apparent”activation energy of the heterogeneous process is found,which is equal to 3.8 kJ/mol indicates the intradiffusion nature of the process. Methods of chemical analysis, scanning electron microscopy and XRD analysis were used for a comprehensive study of raw materials and final products.
- Добавил в систему: Почиталкина Ирина Александровна