Process for the preparation of fertilizers and soil modifiers

Details Process for the preparation of fertilizers and soil modifiers Process for the preparation of fertilizers and soil modifiers

1977-04-07

1977-11-15

Bascomb, Jr., Wilbur L.

Chemistry: fertilizers

Processes and products

Inorganic material

71 60, 71 63, 71 64SC, 423548, 423632, C05D 900, C01C 1244, C01G 4902

Patent

active

040583899

ABSTRACT:
A soil modifying composition and a concentrated solution of ammonium sulphate with a high purity degree are obtained from by-products consisting essentially of ferrous sulphate heptahydrate, obtained in the production of titanium dioxide from ilmenites by the sulphate process, by contacting solid particles of said by-products with gaseous ammonia, lixiviating the resulting product with water, thereby to recover said concentrated solution of ammonium sulphate, the dried residual solid yielding said soil modifying composition.

REFERENCES:
patent: 1983320 (1934-12-01), Sperr, Jr.
patent: 2335760 (1943-11-01), Hucks
patent: 2374454 (1945-04-01), Oliver et al.
patent: 2741876 (1956-04-01), Paolini
patent: 2788259 (1957-04-01), Van Wirt et al.

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