The important role of the double roller press granulator in the production of potash fertilizer The production of potassium sulfate fertilizer equipment mainly includes the double decomposition method and the production of potassium sulfate with alunite. The production principle of the double decomposition method is to control the concentration and temperature of the potassium sulfate fertilizer production equipment according to the difference in solubility of the salts generated by the reaction of sulfates such as mirabilite or ammonium sulfate with potassium chloride at different temperatures, so as to obtain potassium sulfate. The production of potassium sulfate with alunite includes reduction pyrolysis, hydrochemical and ammonia flooding. The crude potassium product obtained by the solution method of the reduction hot potassium sulfate fertilizer production equipment is higher in purity, but the consumption of caustic soda and yan steam is large, and the economic benefit is poor. Potassium sulfate is mainly suitable for use in chlorine-avoiding crops, which can improve the yield and quality of commercial crops. Potassium nitrate not only provides potassium for crops, but also provides nitrogen. It is an important raw material for the production of compound fertilizers and is a physiologically neutral fertilizer.
The npk fertilizer manufacturing process mainly includes feeder, disc mixer, chain crusher, double roller press granulator, drum dryer, drum cooler, drum screener, finished product warehouse, automatic packaging machine, belt type Conveyors, dust settling chambers, heat exchangers. The npk production line is used for granulation, in which extrusion granulation is the most feasible manufacturing method of granular potash fertilizer in the world. At present, the most advanced