Process for preparing dicalcium phosphate containing fertilizer

Details Process for preparing dicalcium phosphate containing fertilizer Process for preparing dicalcium phosphate containing fertilizer

1978-05-05

1979-12-04

Schor, Kenneth M.

Chemistry: fertilizers

Processes and products

Inorganic material

71 49, 71 64DA, 423167, C05B 300

Patent

active

041770528

ABSTRACT:
There is disclosed a process for preparing fertilizers containing dicalcium phosphate from phosphates of mineral origin by mechanical activation. According to the invention grains larger than 5 mm of the sized or unsized starting phosphate compound of mineral origin are granulated up to a grain size of 1 to 4 mm, the granulated phosphate obtained is admixed with monocalcium phosphate and the phosphate crystals are activated by colliding the grains of the mixture at a speed of 70 to 120 m/sec.
The fertilizer prepared according to the invention possesses numerous advantages over the known phosphate fertilizers from technological and applicational point of view as well.

REFERENCES:
patent: 931846 (1909-08-01), Connor
patent: 2776198 (1957-01-01), Turbett
patent: 2908561 (1959-10-01), Seymour
patent: 3129092 (1964-04-01), Legal et al.
patent: 3676100 (1972-07-01), Gerhardt et al.
patent: 3679390 (1972-07-01), Young
patent: 4113842 (1978-09-01), McCullough et al.

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