Open AccessINVESTIGATION OF DECOMPOSITION OF PHOSPHATE RAW MATERIALS IN THE PRESENCE OF PEAT USING PHOSPHORIC ACID
Author(s) -
Katerina I. Panova,
Nicolay N. Pravdin,
Аnatoliy О. Kiryanov
Publication year - 2020
Publication title -
izvestiâ sankt-peterburgskogo gosudarstvennogo tehnologičeskogo instituta (tehničeskogo universiteta)
Language(s) - English
Resource type - Journals
ISSN - 1998-9849
DOI - 10.36807/1998-9849-2020-55-81-10-15
Subject(s) - phosphoric acid , fluorapatite , phosphate , decomposition , raw material , phosphorite , peat , chemistry , reagent , nitric acid , environmental chemistry , mineralogy , inorganic chemistry , organic chemistry , apatite , ecology , biology
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 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.