Mixed phosphatic fertilizer and process for producing the same

Details Mixed phosphatic fertilizer and process for producing the same Mixed phosphatic fertilizer and process for producing the same

1981-12-22

1984-04-03

Schor, Kenneth M.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 11, 71 33, 71 41, 71 37, 71 48, C05B 2100

Patent

active

044405600

ABSTRACT:
In producing a mixed phosphatic fertilizer, humic acid is mixed with fused phosphate to cause the humic acid to react on alkaline ingredients of the fused phosphate for turning these alkaline ingredients into chelate compounds, so that water-soluble phosphoric acid contents of succeedingly added phosphatic fertilizers such as calcium superphosphate and calcium triple-superphosphate are not reduced or insolubilized by being reacted with such alkaline ingredients. Thus, unlike the prior art, a stabilized predetermined level of water-soluble phosphoric acid contents can be secured in the resultant mixed phosphatic fertilizer along with a predetermined level of citric acid-soluble phosphoric acid contents.

REFERENCES:
patent: 1530397 (1925-03-01), Oden et al.
patent: 3114625 (1963-12-01), Higuchi et al.
patent: 3197300 (1965-07-01), Tomioka
patent: 4006004 (1977-02-01), Seferian et al.
Chem. Abstracts 54:7026; 1960; Mayr et al.
Chem. Abstracts 54:7026d; 1959; Nabiev et al.

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