Antioxidant Granulator

DH Series Dry Roll Press Granulator       Our company  offers a wide range of machine sizes for high pressure granulating, which covers nearly all requirements of the clients.If your production is low,you can choose small type machine, if you have high production, you can choose one or more set

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DH Series Dry Roll Press Granulator

       Our company  offers a wide range of machine sizes for high pressure granulating, which covers nearly all requirements of the clients.If your production is low,you can choose small type machine, if you have high production, you can choose one or more sets of machines according to your requirements.And certainly the process of granulating is dry.
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 though 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.Granulation machine for antioxidant


Granular strength can be adjusted by adjusting the pressure of roller, control strength of final products.

1. Cycle operations to achieve continuous production. High yield of finished products.

2. Materials are force to compress molding by mechanical pressure, without any additives, the product's purity is guaranteed.

3. Dry powders are granulated directly without follow-up drying process, the existing production process is easy to convergence & transformation.

4. Granular strength is high, compared with other granulating methods, the improvement sof bulk density are significant,especially for the occasion where increase the proportion of product accumulation.

5. A wide range of raw materials can be used, granular strength can be freely adjusted according to different materials.

6. Compact structure, easy maintenance, simple operation, short process, low energy consumption, high efficiency, low failure rate. 

7. Control environmental pollution, reduce waste and powder packaging costs, and improve product transport capacity.

8. Feeding device adopts frequency adjustment control, high automation ,one can control multi-machine, low labor intensity and long term continuous operation,etc.

9. Major transmission components use high quality alloy material. Stainless steel, titanium, chromium and other surface alloys which greatly improved wear resistance, corrosion resistance, high temperature and pressure capabilities, so that this machine has one long service life.

Technical Parameters
Roller diameter (mm)φ240φ360φ450φ650
Valid usable width (mm)300170-230190-280290-330
Roller speed (rpm)50-10010-2510-2510-25
Max rolled sheet thickness(mm)481216
Rolled sheet output*(kg/h)/1300-23002500-35005000-7000
Finished product output
Granular size (mm)3.5/4.2/4.5/
5.5/6.5 etc.
Main unit power (KW)4530-3755-7590-110
Total installed capacity (KW)555590175
External dimension (mm)2300×1700
Total weight (t)571021
Roller diameter (mm)φ850φ1050φ1500φ1700
Valid usable width (mm)420500650650
Roller speed (rpm)9-168.5-14.56-135-12
Max rolled sheet thickness(mm)25363646
Rolled sheet output*(kg/h)12,000-16,00022,000-
Finished product output
Granular size (mm)2-52-52-52-5
Main unit power (KW)220-250400400×2560×2
Total installed capacity (KW)4008501,500-1,8002,000-3,000
External dimension (mm)5,000×3,800
Total weight (t)4675-85120-150200-220

Applied materials:

Name of materialSpecificationGranular size(mm)Output(kg/h)
Potassium chloride, Russian red potassiumDH3602.0~4.751000~1500
Potassium sulfateDH3602.0~4.751000~1300
NPK fertilizerDH3602.0~4.75900~1500
Ammonium chlorideDH3602.0~4.75800~1000
Ammonium sulfateDH3602.0~4.75800~1000
Zinc oxidDH3601.5~2.5350~500
Sodium cyanideDH3601.5~6.0800~1000
Steel making fluxDH360Olive shape1000~1200
Snow melt agentDH3602.0~7.0800~1000
Bromine chlorine hydantotinDH2401.5~6.0~300
Medical intermediateDH2400.5~2.0~200
Environment protectionDH2408.0~15.0~500
Granulation machine for antioxidant \
Flow chart-Dry Roll Press Granulator
1. Single set of processesGranulation machine for antioxidant
  • This process is DH650 and the following models of the conventional process
  • Granulation machine for antioxidant
      The process is the basis process for the design of the company's dry granulation, In the process raw material will be lifted by bucket elevator to prepare granulation bin, and then into the granulator, material roll forming directly into the crushing system, after crusher broken into screen, The particles divided into qualified granules and unqualified particles by screen net of screen, qualified particles can be directly into the next process, or direct packaging, and unqualified particles will be returned to the raw material bucket elevator, and then re granulation process.
  • This process is DH850 and the above model of conventional process
Granulation machine for antioxidant

2.Multiple sets of processes

       This process is the process of multiple sets of equipment, can be designed according to the site and customer demand, single bucket elevator can be used for loading and granulating, or lifting to the feed hopper, use hopper to feed. After the process of crushing and screening, the materials are crushed and screened.

      "Mixing - granulation - pre crushing - concentrated crushing - Screening - polishing - second screen - packaging", After the screening ,fine powder material to return to the raw material mixing again into the granulation system to form a granulation cycle, improve the granulation efficiency of the granulation process.

      According to the demand, the granulation of the preceding paragraph can be added batching or drying system,in this process, due to the larger strip produced by the tablet, the lower end of the granulation machine is equipped with a pre crushing machine, pre crushing and then concentrated crushing. The qualified material produced by the screening enters into the next polishing, second screening and the packing process, and the screening out of the unqualified large particles are returned to the impact crusher for re broken, the unqualified fine powder is returned to the raw material place to carry on the re granulation.

Parts of one whole set of granulating line
Equipped with mechanical vibrating feed hopper with automatic control and timing vibration.  2.Quantitative feeder
Adopts frequency conversion adjusting speed to ensure the feeding accuracy. 
3.Force-feeding screw hopper

It is composed of variable frequency motor, cone helix, stirring knife tooth and cone feeding hopper with visual glass window as well as feeding mouth assemblies and so on. Its function is to further achieve degassing and perform pressure feeding.
4.Flaking machine
   It is composed of left and right fixed bearing seats, frame structure, two alloy steel rollers, two hydraulic oil cylinders, electric automatic pump station as well as hard tooth surface dedicated reducer and main driving motor.
5.Crushing & granulating machine
It is composed of cutting-up box, cutting-up main shaft and special rotating cutting blades and the main shaft is driven at high speed by the motor to break the extrusion forming materials and dress into pellets.
 6.Vibration screen
It is equipped with screen block-proof device and convenient to clean the screen. The broken pellet and powder materials from the breaking and dressing machine is divided into pellet product and recycling powder.
7.Material return auger
It sends the unaccepted powder material returned from vibration classification screen to the feeding elevator.
8.Bucket elevator
Upper and lower sprocket use assembly structure for the transportation of materials.
9.Control cabinet
It is composed of the electrical components such as electric control box, frequency conversion controller, ammeter, voltage meter, light, button switches, voltage switch and so on. All the electrical equipment is controlled and operated concentratedly.
Granulation machine for antioxidant


       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. 

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