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COMPOUND PHOSPHORICZEOLITIC FERTILIZERSA NEW APPROACH TO IMPROVEMENT OF OFFGRADE PHOSPHATE ROCK EFFICIENCY



The article describes usability of zeolite as activator of natural phosphate rocks in production of phosphate fertilizers. Theory of phosphoric–zeolitic fertilizer production is considered. The research findings on production of phosphoric–zeolitic fertilizers from phosphate rocks (apatite concentrate) and zeolite as well as compound fertilizers from phosphate rocks, apatite concentrate and inorganic admixtures are reported. It is shown how quality of fertilizers is influenced by the mixture and solid-to-liquid ratios, as well as by models of milling equipment. The research shows that in production of phosphoric–zeolitic fertilizers, by varying the mixture milling node (without re-alignment or additional fitting of equipment), it is possible to obtain nearly identical indexes of quality (content of citric-soluble 25) as against traditional fertilizes based on phosphate rocks apatite with rocks with added lignin. The fertilizers produced by the developed technology contain 72–90% of citric-soluble 25 well assimilable by plants. The field tests of sample fertilizers show the increased harvest of wheat and annual grasses by 60–125% as compared with the ground rock phosphate.

For citation: Konnova N. I. Compound phosphoric-zeolitic fertilizers − new approach to improvement of offgrade phosphate rock efficiency. Gornyy informatsionno-analiticheskiy byulleten'. 2019;5:59-71. [In Russ]. DOI: 10.25018/0236-1493-2019-05-0-59-71.


: 5
2019
ISBN: 0236-1493
: 622.791:661.152.3
DOI: DOI: 10.25018/0236-1493-2019-05-0-59-71
Authors: Konnova N. I.

Authors' Information:
N.I. Konnova, Candidate of Technical Sciences, Assistant Professor, Siberian Federal University, 660124 Krasnoyarsk, Russia, e-mail: kni757@mail.ru.



Key words:
Zeolite, phosphate rock, concentrate, phosphoriczeolitic fertilizer, mechanical activation, citric-soluble 25.

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