1.Coating material melting device: it is suitable for continuous and rapid melting of heat sensitive materials. It can provide accurate coating material fluid for spraying system continuously and stably controlled by computer.
2.Coating: the computer controls the carrier flow, completes the preheating of fertilizer and coating material spraying in the coating machine at one time, and sprays sealant and regulator when the coating with relative thickness is formed to improve the product performance.
3.Rotary drum cooler: the special design of the cooler greatly improves the cooling efficiency, greatly reduces the friction between coated particles in the cooling process, effectively reduces the generation of dust, and improves the smoothness of coated particles surface.
Advantages of slow controlled release granular fertilizer
The product is processed into particles by fertilizer granulator machine, with good appearance, uniform coating, strong wear resistance, and can provide sulfur nutrition after degradation of the film, meeting the requirements of environment-friendly fertilizer. A large number of field fertilizer efficiency tests have proven that compared with non-coated fertilizers, the yield can be increased by 6-10% at the same economic input level. Under the same output level, the fertilizer application amount can be reduced by 1/3, and the fertilizer utilization rate can be increased by 10 percentage points.
The production process of coated NPK fertilizer can produce controlled-release fertilizer with large granule urea or crop specific fertilizer as carrier. There are various kinds and processing forms of slow-release and controlled-release fertilizers. At present, there are two types of endoplasm and outsourcing. Endoplasm is added with endoplasmic agents such as urease inhibitors and nitrification inhibitors, or polyaspartic acid There are sulfur coatings, resin coatings, and some inorganic coatings such as phosphates, and some chemically controlled releases such as urinary formaldehyde. The fertilizer production processes are different.