Ключевые слова:
фосфориты Каратау,
механоактивация,
фосфорные удобрения, угольная кислота,
органические отходы
STUDY THE PO
SSIBILITY OF REPLACING A STRONG MINERAL ACID IN
MANUFACTURING PHOSPHATE FERTILIZER ON CARBONIC ACID
Zhaksybayeva G.S., Oshakbayev M.T., Utegulov N.I., Kereibayeva G.H., Sadykova Z.A.
Kazakh National research technical university after K.I. Satpayev, Almaty,
e-mail: kereibaуeva_g@mail.ru
The possibility of replacement of the strong inorganic acids at decomposition of the activated phosphatic
raw materials on metacarbonic acid is investigated. The studied technology will allow to exclude use of the strong
inorganic acids in production of phosphoric fertilizers and to transfer insoluble compounds of fluorine in soluble and
gaseous. It will prevent receipt in a surrounding medium of toxiferous compounds of fluorine. Replacement of the
strong inorganic acids at decomposition of the activated phosphatic raw materials on metacarbonic acid promotes
structural changes that the assimilable forms of phosphates in termination products leads to increase in contents.
The offered technology of processing of low-quality phosphorites allows to receive fertilizers with the high content
of assimilable P
2
O
5
by plants. It has been shown that increased defluorination and solubility in a weak carbonic acid
tricalcium mainly due to destruction of its crystalline structure, and with increasing fineness of the material.
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