Alkaline decomposition process for producing calcined phosphate

Details Alkaline decomposition process for producing calcined phosphate Alkaline decomposition process for producing calcined phosphate

1977-02-18

1978-08-15

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Inorganic material

71 44, 71 47, 71DIG3, 423167, 423206T, C05B 1116

Patent

active

041069226

ABSTRACT:
A process for the production of highly citrate-soluble calcined phosphate fertilizers is disclosed. The process comprises calcinating a mixture which comprises appropriate amounts of calcium phosphates, silicic acid and an alkaline decomposing agent whereby the naturally occurring mineral trona is used as an alkaline decomposing agent. The process is effected in a rotary kiln; the maximum temperature is about 1300.degree. C.

REFERENCES:
patent: 3336104 (1967-08-01), Miller
patent: 3719464 (1973-03-01), Hauschild et al.
patent: 3904733 (1975-09-01), Gancy et al.
patent: 3907538 (1975-09-01), Hauschild
patent: 3985537 (1976-10-01), Hauschild et al.

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