Composite fertilizer and method for its manufacture

Details Composite fertilizer and method for its manufacture Composite fertilizer and method for its manufacture

1975-10-24

1977-06-28

Wyse, Thomas G.

Chemistry: fertilizers

Processes and products

Inorganic material

71 31, 71 64F, 71 64A, C05B 700

Patent

active

040323196

ABSTRACT:
This invention relates to novel fertilizer particles having an inner core and an outer water permeable sulfur coating; to a method of preparing these fertilizer particles by contacting a particulate core material in a fluidized bed, or other suitable coating apparatus, with molten sulfur which solidifies upon the core material; the process preferably being conducted in a fluidized bed having an inert atmosphere in the material contacting zone. This invention is particularly useful in preparing triple superphosphate fertilizers with a water permeable coating of elemental sulfur.

REFERENCES:
patent: 3295950 (1967-01-01), Blouin et al.
patent: 3306730 (1967-02-01), Malmberg et al.

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