Professional manufacturer low invest fertilizer pelletizer machine
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 granules and screening to make the lump materials into granules 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 gap between two relatively turning rollers to compress into laminar particles. During course of roller pressing, the real density of materials can increase 1.5~3 times thus reaching certain demands of granular strength.
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.
Flow chart of Dry Roll Press Granulate
Unit structure
1.Pre-feeder
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.
Technical parameters
| Model |
DH240 |
DH360 |
DH450 |
DH650 |
DH850 |
DH1050 |
Roller diameter
(mm) |
φ240 |
φ360 |
φ450 |
φ650 |
φ850 |
φ1050 |
| Valid usable width (mm) |
300 |
170-230 |
190-280 |
290-330 |
420 |
500 |
Roller speed
(rpm) |
50-100 |
10-25 |
10-25 |
10-25 |
9-16 |
8.5-14.5 |
| Max rolled sheet thickness(mm) |
4 |
8 |
12 |
16 |
25 |
36 |
| Rolled sheet output*(kg/h) |
/ |
1300-2300 |
2500-3500 |
5000-7000 |
12,000-16,000 |
22,000-38,000 |
Finished product output
((kg/h)) |
2000-3000
(Oblate) |
900-1300 |
1800-2500 |
3500-4000 |
6,000-8,000 |
12,000-16,000 |
Granular size
(mm) |
3.5/4.2/4.5/
5.5/6.5 etc. |
2-5 |
2-5 |
2-5 |
2-5 |
2-5 |
| Main unit power (KW) |
45 |
30-37 |
55-75 |
90-110 |
220-250 |
400 |
| Total installed capacity (KW) |
55 |
55 |
90 |
175 |
400 |
850 |
| External dimension (mm) |
2300×1700×1860 |
2350×2000×2600 |
2600×2200×2900 |
3600×2800×3200 |
5,000×3,800×4,100 |
7,000×5,000×6,000 |
| Total weight (t) |
5 |
7 |
10 |
21 |
46 |
75-85 |
Notes: Rolled sheet output, finished product output are just for reference and the screen is determined according to the nature of materials.
Applied materials
·1.Fertilizers
Such as: potassium sulfate, potassium chloride, the Russian Red K, NPK fertilizer, ammonium chloride, potassium nitrate, MAP, DAP, ammonium sulfate, ammonium bicarbonate.
·2.Powders
Such as: antioxidant, BCDMH, sodium cyanide, sodium dichloroisocyanurate, 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 porphyrin insects, nicotinic acid, nicotinic acid amine, pharmaceutical intermediates, steel-making additives, melting agent, swelling, alumina powder, phosphogypsum, gypsum, benefication agent, environmental protection materials. etc.
Various of rollers and finished production
Company Introduction
Jiangsu Fuyi Machinery Technology Co., Ltd is one professional enterprise, specialized in the developing and manufacturing of dry granulating equipment, drying equipment ,dynamic calcinations equipment, etc. By absorbing advanced drying & granulating technology at home and abroad, we improve the technology of rotary flash dryer and dry granulator. Our company is now devoting itself to the manufacturing of multi series products with dry granulator rotary flash drier, high pressure pulse bag type dust collector, spray drier, belt drier, high-efficient cyclone drier, cyclone dynamic incinerator, and coal-burned tube-type hot-air furnace as our core products and our new techniques according have been widely applied in the drying and granulating treatments in the chemical, pharmaceutical, agricultural chemicals, and food industry. With advanced technology, reasonable process, superior performance & perfect services, products are popular with customers at home and abroad. What's more, when designing these products, we pay more attention to the saving of energy, environment protection, as well as reduction of labor intensity; in consequence, a new access has been explored to raise the working efficiency of customers and reduces their costs.
Jiangsu Fuyi Machinery Technology Co., Ltd is located at the Huaxing Road,Number 212,in the economic development zone in Jintan, with convenient transportation. Relying on the effective management system, oild technical forces, advanced production equipment, perfect testing process, as well as professional earnestness, our company offers customers with superior services and various products, so every suggestion or special requirement from customers will be our development planning gist and each goal of them will be our service direction. The quality policy abided by in our company is that: quality and reputation shall always serve as our eternal pursuit. Therefore, we will always conform to the principle of perfect combination of honesty, reputation, quality, and service. What we offered to customers shall be our excellent products and distinguished services; our promises to customers shall be above anything else.
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