The compound fertilizer can be produced by using the fertilizer manufacturing technology.In the npk fertilizer manufacturing process,the raw materials of producing the npk,compound fertilizer granulator is commonly and the process of producing the npk,compound fertilizer granulator is not so complex using the fertilizer equipment to finsih the production process.
The raw materials of single basic fertilizer such as urea,ammonium,nitrate,ammonium chloride,ammonium sulfate,monoammonium phosphate,diammonium phosphate,bicalcium chloride,potassium chloride(potassium sulfate)are crushed to a certain fineness,and the materials are agglomerated and granulated in the rolling bed of drum granulator or disk granulator by humidification and heating.In the process of granulation,the materials can also be agglomerated and granulated in the drum if conditions permit.A small amount of phosphate acid and ammonia are added to the granulator to improve the granulation conditions.NPK compound fertilizer products are obtained by drying,screening and cooling granulating materials,which is also one of the methods widely used in the world.In the early days,this method was used in the USA,India,Japan,and other Southeast Asian countries.
This method has a wide range of raw materials,simple processing,less investment,low production cost,large production flexibility,simple and easy grade adjustment of products,strong universality,solid raw materials used,weak dependence on raw materials.Because it is a secondary processing process of basic fertilizer,there is almost no environment pollution,so this method is a better choice for most small and medium-sized producers.
Extrusion granulation process
Extrusion granulation is a dry granulation process in which solid materials are agglomerated by external pressure.It has the following advantages:
1.Generally,the fertilizer manufacturing process does not need drying and cooling process,especially suitable for heat senstive materials,while saving investment and engery consumption.
2.The operation is simple and there is no discharged of three wastes during production.
3.It can produce high concentration compound fertilizer with lower concentration than general compound fertilizer,and can also add organic fertilizer and other nutrient elements as needed.
However,the extrusion granulation method also has some shortcomings:1.as the key equipment of extrusion granulation,the extruder consumes a lot of materials and has a high failure rate due to the problems of equipment manufacturing and materials of pressure parts.The production capacity of extruder is small,so it is difficult to achieve large-scale production.Therefore,this method is generally used for production scale below 30000 tons/year.
The npk,compound fertilizer production line is designed and equipped with different type fertilizer machines to produce the npk,compound fertilizer granulator.The extrusion method of producing the granulator we also can use in the organic fertilizer production line to produce the organic fertilizer granulator.Sometimes,using this method we can use the roller press granulator machine to produce the granulator.The fertilizer granulator machine which designed by the fertilizer machine manufacturers also have the flat die granulator machine,new type organic fertilizer granulator machine and so on.Different type fertilizer granulator machine is used in different type fertilizer granulating method.
As the professional fertilizer machine manufacturers,we also designed the specifical fertilizer production line --biofertilizer production line to produce the bio organic fertilizer granulator.We also can design other type fertilizer production line to produce different type fertilizer granulator.