Dry powder pelletizer with hydraulic system

         The importance of Granulator technology as one of the most important branches of powder particles processing treatment is increasingly clear with the demand of environment protection and the improvement of automation of the production process. Powder product  granulating has become the necessary trend of powder-after-processing technology in the world.

Working Principle

         Raw materials are sent into hopper by quantitative feeder , compactors use the pair of roller with the hole roll, leaving certain gap and rotation with the same speed reversely. Shaft holders of one group of rolls are fixed, and the other one of group can slide to help the hydraulic cylinder press the rolls for abutting closely against each other. Many arc grooves with the same shape and size are arrayed regularly on the roll surface. In accordance with different compressing ratios of target materials, the wave trough of arc groove of one roll shall be directed at that of one roll. When two rolls parallel each other horizontally, powder grained materials are, continuously and evenly fed in the gap between two rolls by means of their gravities and through a forced charger from above of two rolls. After entering the nip area, the materials are gradually nipped by the rolls. With continuous rotation of the rolls, the space that the materials occupy reduces gradually and is compressed step by step and reaches the maximum shaping pressure. And then, as the pressure reduces gradually later, pressed blocks drop off the arc grooves of the rolls for recovered elasticity and gravity of the flaking machine and enter a crushing device for crushing and then enter a sieving device for sieving. At last, grained products are obtained. The powder materials and large particles which are substandard will return to bucket elevator and enter into the next process with new products.

The significance of granules strength processing is embodied in the three main areas
I.  Reduce dust pollution and improve working conditions of operation.

II. Meet the requirements of production processes, such as increasing porosity and specific surface area, improving thermal transmission and so on.

III. Improve the physical properties of the products (such as fluidity, Breathability, bulk density) and avoid the bad influences of segregation, pulsing, agglomeration, bridging etc. appearing in the follow-up operations (drying, screening, measurement) and the use of the process (measurement, ingredients, etc.), improving the appearance and fluidity, being convenient for storage and transportation, controlling solubility, controlling porosity and specific surface area and so on. Create the conditions for enhance the production and use of process automation and confined operations.

DH series dry roll press granulator adopts dry rolling technology to compress the powdery materials with moisture content ≤ 5% into pieces or tablets, then going through the processes of breaking into pellets and screening to make the lump materials into pellet materials that meet the requirements of application. Dry roll press granulator mainly depends on the manner of external pressure to force the material going through the clearance between the two relatively turning rolls to compress into laminar particles. During course of roller pressing, the real density of the materials can increase 1.5-3 times thus reaching certain demands to pellet strength. 

Various of rollers

System(Single set of granulating 2-2.5t/h) 

Applied materials

1. Fertilizers:

potassium sulfate, potassium chloride, the Russian Red K, NPK fertilizer, ammonium chloride, potassium nitrate, MAP, DAP, ammonium sulfate, ammonium bicarbonate.

2. Powders:

antioxidant,bromochlorohydantoin,sodiumcyanide,sodiumdichloroisocyanurate, sodium TCCA, cyanuric acid, calcium hypochlorite, zinc oxide, lead oxide, potassium carbonate, carbonate strontium, calcium chloride, dicalcium phosphate, sodium metasilicate, is sodium silicate, cryolite, aluminum fluoride, brake powder, rubber additives, silica, calcium aluminate, TSP, SSP, carnallite stone, phosphate rock, metal powder, fillers, feed additives, arsenic porphyry insects, nicotinic acid, nicotinic acid amine, pharmaceutical intermediates, steel-making additives, melting agent, swelling, alumina powder, phosphogypsum, gypsum, benefication agent, environmental protection materials.etc.

Final shaped granules

Technical Parameters

Notice: Rolled sheet output, finished product output is reference values and the screen is determined according to the nature of the materials. 

Advantages of NPK granulator

• Adopting increased shafts output dedicated reduce and drum gear shaft coupling effectively protects the rolls and the main bearing from damage, increase the driving efficiency and further improving the production of products. One roller’s bearing seat is fixed and the other roller’s bearing seat is sliding.
• In the surface of the roller, many holes are arrayed. According to the different compression rate of the materials, choose the trough of one roller aiming at the trough of another roller, or peak to trough. Two rollers are arranged in horizon.
• With the supporting pressure of hydraulic cylinder, they are close to each other and the hydraulic system can has the multiple and automatic protection function.The optimized
• hydraulic system makes the motion flexibility of dynamic rollers stronger and be able to reject the iron lumps mixed in unexpectedly and protect the equipment to run safely.
• Roller pulling with roller removal device, it’s more easily and quickly for you to change the rollers, and save your costs of changing.

                                                                                   Customers Installation Site

Automatic Electric Cabinet

Services

Fuyi has designed and manufactured roller presses and equipments for briquetting and compacting NPK fertilizer, powder, chemical, minerals, etc, since 2006. We take care of green field projects as well as of existing plants. Our services cover material tests, process layout, engineering, and supply of complete granulating plants or key equipments, guidance of installation and commissioning, training.

Also, the company manufactures and supplies equipment for drying equipments and dust collector machines.

Extensive experience and best quality production facilities guarantee a smooth workflow from start to finish.

Welcome our sincere clients come to visit out factory.