| 摘要 |
<p>1. Process for the anticlumping of non-powdery salts and fertilizers, characterized by the fact that there is sprayed onto the constituent particles of the fertilizer, after drying and before storage, at a moment when said particles are in their final form and have acquired almost the whole of their final mechanical properties : - either an aqueous solution of alkali or amine silicate whose content of dry matter is from 15 to 60% by weight, preferably from 25 to 40% by weight, in an amount of about 0.8 to 1 per thousand by weight with respect to the fertilizer to be treated, this application being preceded or followed by an application of an anionic surfactant in aqueous or oily solution in an amount of about 1 to 2 per thousand by weight with respect to the fertilizer to be treated, - or an aqueous solution of alkali or amine silicate comprising an anionic surfactant in the form of an alkali or amine salt, the amount of solution applied being from 0.6 to 1.6 per thousand by weight with respect to the fertilizer, the maximum proportion of silicate introduced being the one introduced by an aqueous solution of alkali or amine silicate comprising an anionic surfactant in the form of alkali or amine salt, this solution containing 90% of a solution of alkali or amine silicate whose content of dry matter is 60%, the amount of solution (silicate + surfactant) being from 1.6 per thousand by weight with respect to the fertilizer, i.e. a proportion of 0.864 per thousand by weight of dry silicate with respect to the fertilizer, - or one of the preceding product, associated with an oil or with a fuel and/or if necessary with an inert mineral coating agent.</p> |
