Decarbonization of ammonium polyphosphate fertilizer solutions

Details Decarbonization of ammonium polyphosphate fertilizer solutions Decarbonization of ammonium polyphosphate fertilizer solutions

1978-10-30

1979-06-12

Schor, Kenneth M.

Chemistry: fertilizers

Processes and products

Inorganic material

423305, C05B 106, C05B 1110

Patent

active

041579119

ABSTRACT:
Ammonium polyphosphate fertilizer solutions contaminated with carbon and carbonaceous residues are decarbonized by a sequential treatment to produce a light-colored solution/slurry of fertilizer solution containing essentially no visible carbon. In the first step, a mixture of an organic amine with a quaternary ammonium salt is dispersed in the contaminated fertilizer solution. In the second step a water immiscible hydrocarbon of low polarity is incorporated into the fertilizer solution by low shear agitation. In the third step a very slow agitation of the mixed system provides for the rising and coalescence of the low density hydrocarbon droplets containing the carbonaceous particles into a layer above the fertilizer solution.

REFERENCES:
patent: 3619161 (1971-11-01), Knarr et al.
patent: 3969483 (1976-07-01), Stinson et al.

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