Chemistry: fertilizers – Processes and products – Inorganic material
Patent
1979-02-21
1981-01-20
Schor, Kenneth M.
Chemistry: fertilizers
Processes and products
Inorganic material
71 31, 423170, 423194, 423395, C05C 502
Patent
active
042460190
ABSTRACT:
A method of producing a complex mineral fertilizer is disclosed, comprising the steps of decomposing polyhalite at a temperature not exceeding 110.degree. C. in the presence of dilute nitric acid, neutralizing the obtained suspension with a substance selected from the group consisting of calcium carbonate, calcium hydroxide and calcium oxide, and separating the resultant product.
REFERENCES:
patent: 1812497 (1931-06-01), Ransom
patent: 1946068 (1934-02-01), Friedrich
Andreeva Nina K.
Muraviev Alexandr V.
Safrygin Jury S.
Sokolov Igor D.
Zykov Valery A.
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