Zeolite-activated guano phosphates and a method for producing th

Details Zeolite-activated guano phosphates and a method for producing th Zeolite-activated guano phosphates and a method for producing th

1991-04-03

1992-03-10

Lander, Ferris

Chemistry: fertilizers

Processes and products

Inorganic material

71 52, 71 62, 71 63, 71 6404, 423167, C05B 1302, C05F 302, C05G 300

Patent

active

050946803

ABSTRACT:
Zeolite-activated guano phosphate fertilizers are produced by a method comprising grinding guano phosphates to 10 mesh granules by roughing and middling mills, heating in a rotary kiln, cooling, finely grinding to obtain 100 mesh guano phosphate powder, analyzing the content of the phosphoric anhydride in the powder, and mixing with natural zeolites to obtain zeolite-activated guano phosphates, wherein the proportion of the phosphoric anhydride is controlled at 18% by weight.

REFERENCES:
patent: 4013443 (1977-03-01), Schuman
patent: 4238459 (1980-12-01), Phillips, Jr. et al.
patent: 4906444 (1990-03-01), Ohtsuka et al.

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