In fact, if you use common NPK materials or certain mineral powders, it won’t cause more wear and tear on the rollers. Typically, under standard conditions, double roller fertilizer granulator can last up to 1500 tons of NPK granular fertilizer production. For example, urea, ammonium sulfate, ammonium chloride, calcium carbonate, ထုံးကျောက်, zeolite, bentonite and other similar powder or lumps. ထိုမှတပါး, when extruding NPK fertilizer powder directly for granulation, you needn’t to add other auxiliary materials. သို့သော်, if you make compound fertilizer granules from finer mineral powder, the extrusion pressure between the two rollers alone is not enough forming. ထို့အတူ, you can add 20% water appropriately for better granulation effect.

ယေဘုယျအနေဖြင့်, some compound fertilizer materials are slightly acidic. When the rollers press these materials, the temperature will rise up. ထို့ကြောင့်, through certain physical and chemical reactions, these raw materials can corrode the roll coating and ball socket shape over a long period of time. Honestly, this extruder pelletizer can produce approximately 800 tons of fertilizer granules from corrosive substance. For instance, you can use ammonium chloride, potassium nitrate, calcium chloride, calcium nitrate, manganous sulfate, monoammonium phosphate, စသည်တို့. to make fertilizer pellets. What’s more, regular cleaning and maintenance can extend the service life of the roll dies.

Indeed, organic fertilizer granulation raw materials include chicken manure, ဝက်ချေး, kitchen waste, sawdust, bean dregs, biogas residues, mushroom residues and so on. At the beginning, you should handle these materials by compost machines for fermentation and decomposition. After organic fertilizer composting, these materials contain 30-35% moisture content. And you’d better age to reduce water for a few days before granulation. Because organic compost has high moisture and strong stickiness, it is easy to clog and damage the roll molds. As a result, double roller compaction pelletizer has a maximum lifespan of processing 500 tons of organic waste.