FIELD: inorganic fertilizers. SUBSTANCE: ammoniated evaporated nitrate-phosphate solution is mixed with potassium chloride, resultant mixture is granulated, and product dried in the flow of hot gases. Diluted aqueous solution of fertilizer formed in the production process as well as in the wet dust catching process is neutralized with alkali metal hydroxide and/or carbonate and evaporated to moisture content no higher than 30%, after which returned into granulation stage, while distilled ammonia is used in the same production process. EFFECT: avoided decomposition of salts and considerably reduced equipment corrosion. 4 cl, 3 ex
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Authors
Dates
2000-08-20—Published
1999-04-20—Filed