Formula and preparation method of powder raising-free environment-friendly fertilizer anti-caking agent

The invention discloses a powder raising-free environment-friendly fertilizer anti-caking agent, prepared from 50 to 80 percent of oleic acid, 15 to 45 percent of phosphate and 1 to 5 percent of anhydrous alcohol. A preparation method of the powder raising-free environment-friendly fertilizer anti-caking agent is characterized by comprising the following steps: Step 1: preparing oleic acid; specifically comprising the following steps: S1: preparing materials, and selecting suitable animal or vegetable fat or oil; S2: heating and dissolving, i.e., heating the animal or vegetable fatty acid or oil to ensure that all saturated substances are dissolved; S3: cooling and crystallizing, i.e., sending a solution in S2 to a jacketed jar with stirring. Aiming at the powder raising problem of fertilizer per se and anti-caking powder, an anti-caking agent formula which is suitable for a low melting point of spraying and is good in fluidity is mainly researched; under a high-speed coating process,oleic acid and phosphate