Chemistry: fertilizers – Processes and products – Organic material-containing
Patent
1994-04-28
1995-11-14
Langel, Wayne
Chemistry: fertilizers
Processes and products
Organic material-containing
71 12, 71 13, 71 15, 71 21, 71 23, 71 24, C05F 300, C05F 1100, C05F 1102
Patent
active
054662737
ABSTRACT:
A method of treating organic material which includes admixing organic material with water and an acid, the acid equivalent to 5-12% by total weight 100% sulfuric acid; increasing the pH of said admixture, while simultaneously introducing up to 5% by weight of steam; and heating and drying the basified admixture. The resultant material makes excellent plant food, fertilizer, or soil conditioner. Various modifications are possible, e.g., during the first step, steam may be introduced in an amount of up to 40% by weight of the final product. Also, during the first step, carbonate-free calcium may be included in the admixture of the first step. After the alkalinization step, nutrients such as lime, dolomite, rock phosphate, potash, ammonium nitrate, and/or urea may be added to the admixture. The resulting material can be granulated, extruded or pelletized.
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