Method for producing fertilizers containing dispersed micronized sulphur

摘要

A method of producing a fertilizer composition containing micronized sulphur wherein elemental sulphur is dissolved in anhydrous or hydrous ammonia to form an ammonia/sulphur solution and the ammonia/sulphur solution is reacted with an acidic component having at least one plant growth constituent to simultaneously form a sulphur composition comprising a sulphur compound and micronized sulphur. The thus formed fertilizer composition is dried and can be formed into various shapes such as pellets, prills, etc.

主权项

1. A method of producing fertilizer compositions containing micronized sulphur comprising the steps of:
first dissolving elemental sulphur in an anhydrous or hydrous ammonia solution to form an ammonia/sulphur solution (AMS solution); second, reacting said AMS solution with an aqueous solution of an acidic compound selected from the group consisting of (a) sulphuric acid and its derivatives, (b) phosphoric acid and its derivatives, (c) nitric acid and its derivatives, (d) carbonic acid and its derivatives, and (e) mixtures thereof to simultaneously form a fertilizer composition comprising a fertilizer compound and micronized sulphur, said micronized sulphur being uniformly dispersed in said fertilizer composition; and third, drying said fertilizer composition.