INVESTIGATION OF DECOMPOSITION OF PHOSPHATE RAW MATERIALS IN THE PRESENCE OF PEAT USING PHOSPHORIC ACID
ИССЛЕДОВАНИЕ ПРОЦЕССА РАЗЛОЖЕНИЯ ФОСФАТНОГО СЫРЬЯ В ПРИСУТСТВИИ ТОРФА С ИСПОЛЬЗОВАНИЕМ ФОСФОРНОЙ КИСЛОТЫ

Katerina I. Panova, St Petersburg State Institute of Technology (Technical University), Nicolay N. Pravdin, Аnatoliy О. Kiryanov, St Petersburg State Institute of Technology (Technical University), St Petersburg State Institute of Technology (Technical University)
2020 Bulletin of the Saint Petersburg State Institute of Technology (Technical University)  
In the process of decomposition of phosphate raw materials, the dynamics of transformation of its constituent mineral phosphoric components: fluorapatite and its derivatives into available for plants dihydro - and hydroorthophosphates of calcium and the influence of a natural organic activator on it are studied.. The composition of the obtained organomineral products was evaluated. The questions of intensification of processing of phosphorite in phosphate-peat systems with additional
more » ... ditional involvement of nitric acid are considered. The possibilities of reducing the amount of acidic reagents to 50% are shown, while guaranteeing a high degree of use of the target raw material component (94%) and the absence of waste.
doi:10.36807/1998-9849-2020-55-81-10-15 fatcat:k3nsrldvzzhhdcddsmsa2w3zqu