PRODUCTION METHOD OF GRANULAR CALCIUM-SULFUR FERTILIZER HAVING ENHANCED DECAY RATE AND THE GRANULAR CALCIUM-SULFUR FERTILIZER PRODUCED THIS METHOD

摘要

The present invention relates to the attenuation rates that a kind of production has improved granular calcium sulfur fertilizer, because of the component using dihydrate gypsum, with the production of granular calcium sulfur fertilizer. More particularly it relates to: a kind of production granular calcium sulfur fertilizer has improved attenuation rate, because having phosphorus P as by-product generation using dihydrate gypsum) step is generated, wet mud is selected from phosphoric acid by-produced gypsum (CaSO_4& middot; 2H_2O), the method for desulfurized gypsum, waste gypsum, when other side dihydrate gypsums are used alone or the addition of strong base substance is powdered and dried dihydrate gypsum, and pH is adjusted to 6 or more and 12 hereinafter, therefore fertilizer has the generation of improved attenuation rate; The granular calcium sulfur fertilizer production to; Use the granular calcium sulfur fertilizer as filler with mixed fertilizer (BB fertilizer). In a kind of drying steps for producing semi-hydrated gypsum by phosphoric acid by-produced gypsum, dihydrate gypsum, it is same it is rapid curing with water (H_2O) and become and be difficult to be dissolved in water at room temperature, therefore at identical temperature below dry 100& deg; C. Therefore, intensity expression is weak, and product contains moisture, the problem that a large amount of fine powder generates be lump with powder fertilizer when spray, therefore user avoids using the fertilizer. According to the present invention, which has been resolved. ;The 2016 of copyright KIPO submissions