Coal ash fertilizer compositions

Details Coal ash fertilizer compositions Coal ash fertilizer compositions

1983-04-04

1984-09-04

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 28, 71 29, C05F 1102

Patent

active

044695039

ABSTRACT:
The invention relates to a fertilizer composition which comprises coal ash, and a relatively water insoluble polymer capable of gradually decomposing to slowly release nitrogen polymerized uniformly on said coal ash. The polymer is formed by the in situ polymerization of an aldehyde and a polymerizable organic nitrogen containing compound capable of reacting with two or more equivalents of said aldehyde in the presence of an acid. The coal can be fly ash, bottom ash or boiler slag and can be derived from anthracite, bituminous or subbituminous coal or from lignite coal. The acid can be phosphoric acid, the aldehyde formaldehyde and the polymerizable organic nitrogen containing compound urea.

REFERENCES:
patent: 4067716 (1978-01-01), Sterrett
patent: 4252919 (1981-02-01), Wagner et al.
patent: 4352856 (1982-10-01), Smillie

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