Fertilizer product with sustained action and process therefor
    31.
    发明授权
    Fertilizer product with sustained action and process therefor 失效
    化肥产品具有持续的作用和过程

    公开(公告)号:US4493725A

    公开(公告)日:1985-01-15

    申请号:US495531

    申请日:1983-05-17

    IPC分类号: C05G3/00 C05D9/00 C05D9/02

    CPC分类号: C05G3/0041

    摘要: A fertilizer product in granular form with sustained action is provided by spraying a silicate-based solution on the surface of the fertilizer granules in a conventional coating machine which is maintained at temperatures ranging from 20.degree. to 100.degree. C. The coating solution comprises 1 to 50% by weight of a silicate and/or silicic acid ester based on the weight of the fertilizer material to be treated, 0.001 to 1.0 part by weight of a metal and/or non-aqueous metallic compound (first additives), 0.001 to 1.0 part by weight of an aqueous metallic compound (second additives), 0.001 to 1.0 part by weight of an inorganic mineral (third additives), and optionally high molecular weight organic compound, wherein all parts described above are based on the weight of the silicate and/or silicic acid ester used. The coated fertilizer granules are subject to heat-treatment for 10 seconds to 10 days under conditions that the relative humidity and the temperature be maintained at 5 to 95% and 10.degree. to 250.degree. C., respectively.

    摘要翻译: 通过在保持在20℃至100℃的常规涂布机中将硅酸盐基溶液喷洒在肥料颗粒表面上来提供具有持续作用的颗粒形式的肥料产品。涂布溶液包含1至 50重量%的硅酸盐和/或硅酸酯,基于待处理的肥料的重量,0.001至1.0重量份的金属和/或非水性金属化合物(第一添加剂),0.001至1.0 水溶性金属化合物(第二添加剂)重量份,0.001〜1.0重量份的无机矿物(第三添加剂)和任选的高分子量有机化合物,其中所有上述部分均以硅酸盐的重量为基准, /或硅酸酯。 在相对湿度和温度分别保持在5至95%和10至250℃的条件下,将涂覆的肥料颗粒进行10秒至10天的热处理。