Compositions for use in agriculture as soil modifiers and their

Details Compositions for use in agriculture as soil modifiers and their Compositions for use in agriculture as soil modifiers and their

1974-09-26

1976-02-03

Spear, Jr., Frank A.

Chemistry: fertilizers

Processes and products

Inorganic material

71 64R, 71 64SC, 423548, 423632, C05D 302, C05D 900, C10C 1244, C01G 4902

Patent

active

039362922

ABSTRACT:
Compositions useful in agriculture as soil modifiers and fertilizers are prepared by contacting the waste materials, obtained in the manufacture of titanium dioxide from ilmenites by the sulphate process, and which consist essentially of ferrous sulphate, with oxides, hydroxides or carbonates of alkali metals or alkaline earth metals or ammonium carbonate, and then submitting the reaction product to oxidation to convert the ferrous hydroxide into ferric hydroxide. Ferric hydroxide is further converted to ferric sulphate by treatment with sulphuric acid.

REFERENCES:
patent: 824791 (1903-07-01), Jenkner et al.
patent: 1294526 (1919-02-01), Vis
patent: 2529874 (1950-11-01), Hoak
patent: 2741876 (1956-04-01), Paolini
patent: 2795495 (1957-06-01), Schmatloch et al.
patent: 2798802 (1957-07-01), Roy et al.
patent: 2845332 (1958-07-01), Allison et al.

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