The invention discloses a method for producing mineral raw organic fertilizers. The method has the advantages that
sulfuric acid and
nitric acid are uniformly mixed with each other and then are used for decomposing
phosphorite powder, completely decomposed materials are conveyed into granulators,
humic acid is added into the granulators,
potassium sulfate and diversified trace elements are jointlygranulated, and the mineral raw organic fertilizers which are products can be obtained after the ultimate
moisture content is controlled; processes for producing the mineral raw organic fertilizers are safe, simple and convenient, the
phosphorite powder is decomposed by mixed acid, accordingly, the method is high in
decomposition speed and extraction rate, elements and nutrients such as N and P2O5 can be generated,
nitrate can be effectively utilized, and
calcium nitrate with high value further can be generated;
phosphorus gypsum can be prevented, and accordingly diversified problems due to extensive stacking of
phosphorus gypsum can be effectively solved; effective nutrients in soil can be increased by the mineral raw organic fertilizers, the
phosphorus effectuation can be promoted, theutilization rate of the mineral raw organic fertilizers can be increased, soil structures can be improved if the mineral raw organic fertilizers are applied, formation of
soil aggregate structures canbe promoted, the
fertilizer supply performance and the water and
fertilizer retention performance of the soil can be improved, and the method has an excellent application prospect.