Chemistry: fertilizers – Processes and products – Inorganic material
Patent
1975-11-12
1978-01-31
Hart, Charles N.
Chemistry: fertilizers
Processes and products
Inorganic material
71 63, 71 64SC, 423548, 423632, C05D 902
Patent
active
040713474
ABSTRACT:
Novel compositions for use in agriculture as soil improvers and fertilizers comprising as essential components ammonium sulfate and ferric oxide hydrate. By-products obtained in the production of titanium dioxide from ilmenite or ilmenite slag in the sulfate process and substantially consisting of ferrous sulfate heptahydrate are reacted with ammonia and that the reaction product obtained, consisting substantially of ammonium sulfate and ferrous hydrate, is subsequently oxidized until a composition is obtained which substantially consists of ammonium sulfate and ferric oxide hydrate.
REFERENCES:
patent: 2374454 (1945-04-01), Oliver
patent: 2741876 (1956-04-01), Paolini
Calcagno Benedetto
Ghirga Marcello
Paolinelli Antonio
Piccolo Luigi
Hart Charles N.
Lander Ferris H.
Societa Italiana Resine S.I.R. S.p.A.
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