Roller press granulation production line mainly adopts the dry process of roller-to-roll to produce fertilizer. At room temperature, the dry powder material is directly pressed into granules. The production line can not only produce ammonium carbonate, urea, ammonium chloride, ammonium phosphate, potassium chloride and other compound fertilizers, single fertilizer, but also produce organic fertilizer and rare earth fertilizer. The roller press granulation fertilizer production line has no drying system. Compared with the traditional drum granulation and disc granulation fertilizer production line, the investment can be reduced by more than 30%, and the compound fertilizer product with 50% content can be produced.
Fertilizer granules produced by double roller press granulator have high strength and good slow-release performance, and are not easy to be lost under the condition of excessive rainfall, so that the speed of crop absorption is synchronized with the speed of fertilizer release, which not only improves fertilizer efficiency, but also reduces the pollution of soil and groundwater.
Industrial roller press granulation production and processing mainly includes: Batching and mixing, granulation, screening, packing.
The computer automatic control material weighs and feeds proportionally, and the weighed material is evenly conveyed to the belt conveyor. In automatic batching, the batching system can automatically calculate and process the collected signals, match the main material with the auxiliary material in a certain proportion, and measure the conveyed material by electronic belt scale, and output it to the corresponding control quantity.
After mixing, the raw material is crushed by chain crusher to ensure the fineness of raw material powder during granulation, and then the raw material is sent into the mixer to stir. Material stirred evenly can be fed into the granulator for granulation.
Granulation is the key process of fertilizer production, and the roller press granulator is the main equipment of this process. The roller press granulator is composed of a pair of rolls with opposite rotating directions. The particle size of the raw material powder can not exceed 0.5mm. The powder enters the roll through the disc feeding machine and is extruded into particles. Roller press granulation is a physical process, there is no temperature rise in production, and it will not cause loss of temperature-sensitive materials. The production line of roller press fertilizer granulator can be combined with several roller press granulator to meet the demand of different output. The production line of four roller press granulator can reach 8 tons per hour.
In order to ensure that the final product particles of the roller press granulation line are consistent and convenient to use, it is necessary to screen the fertilizer particles. The rotary drum screener has the advantages of simple structure, smooth operation, low noise and convenient maintenance. Rotary drum screener has no special requirements for fertilizer and is widely used in fertilizer factories. The sifted fertilizer has uniform grain size and is a high-quality commercial fertilizer.
The packing machine weighs and packs bulk and particulate materials quantitatively, and the computer automatically controls the program. It has stable performance, high packing efficiency, accurate measurement and simple operation.
Video of roller press granulation production line
Roller press granulation production line is suitable for the production of small and medium-sized fertilizer plants, with less investment in equipment and less energy consumption in operation. There is no chemical reaction in the process of roller press granulation, and the raw material ratio can be mixed arbitrarily. The fertilizer produced by the technology of roller press granulation equipment has strong pertinence, scientific formula, cost saving and good development prospects.