Controlled release fertilizers employing ureaform compounds and processes for making same
申请人:Pursell Taylor
公开号:US20060003893A1
公开(公告)日:2006-01-05
A controlled release agricultural absorbent based product including particles of an absorbent material containing capillaries/voids between 10-200 microns in cross-sectional diameter which is impregnated in an amount of 40-95% of the capillaries/voids volume with an agriculturally beneficial material, at least including ureaform, and said beneficial material being selected from the group consisting of fertilizers, insecticides, herbicides and fungicides, being produced by a process including steps of 1) introducing water to particles of absorbent material to result in absorption of water within the absorbent material, 2) heating the absorbent particles and water to transform the water within the absorbent particles to steam, 3) introducing the absorbent particles to an agriculturally beneficial material, at least including ureaform, to saturate the beneficial material, 4) granulating the beneficial material and saturated absorbent particles to solidify and harden the mixture, resulting in the agglomeration of absorbent particles into granules, and drying the granules.
一种基于农业吸收剂的控释产品,包括含有横截面直径在10-200微米之间的毛细管/空泡的吸收剂材料颗粒,该吸收剂材料颗粒的毛细管/空泡体积的40-95%浸渍有农业有益材料,至少包括脲醛,所述有益材料选自由肥料、杀虫剂、除草剂和杀真菌剂组成的组,其生产工艺包括以下步骤:1)将水引入吸收剂材料颗粒,使水被吸收剂材料吸收、2) 加热吸水材料颗粒和水,使吸水材料颗粒内的水转化为蒸汽; 3) 将吸水材料颗粒引入至少包括脲醛在内的农业有益材料中,使有益材料饱和; 4) 将有益材料和饱和的吸水材料颗粒造粒,使混合物固化和硬化,从而使吸水材料颗粒凝结成颗粒,并将颗粒干燥。