Double roller press operating principle: 
Chemical mineral fertilizer Powder material hydraulic mechanical high pressure no binder double roller press
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- Supplier: Changzhou Shengong Granulation Equipment Co. Ltd.
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Product Overview
Description
The dry granulation process is used to form granules without using a liquid solution because the product granulated may be sensitive to moisture and heat. Forming granules without moisture requires compacting and densifying the powders. In this process the primary powder particles are aggregated under high pressure.
Dry granulation can be conducted under this process: the powder is squeezed between two counter-rotating rollers to produce a continuous sheet or ribbon of materials.
When a roller compactor is used for dry granulation, the powders may not possess enough natural flow to feed the product uniformly into the die cavity, resulting in varying degrees of densification. The roller compactor (granulator-compactor) uses an auger-feed system that will consistently deliver powder
uniformly between two pressure rollers. The powders are compacted into a ribbon or a sheet between these rollers and milled through a low-shear mill.
Typical roller compaction processes consist of the following steps: convey powdered material to the compaction area, normally with a screw feeder, compact powder between two counter-rotating rolls with applied forces, mill resulting compact to desired particle size distribution. Roller compacted particle are
typical dense, with sharp-edged profiles.
Double roller press applications:
1.fertilizer:
2.powder material
zinc oxide, lead oxide, calcium chloride, calcium phosphate, High test bleaching powder, cryolite, chemical inhibitor, silica, Isophthalodinitrile etc.
3.chemical raw material, fine chemical material
We are small factory but dedicated in only roller compactor for granulating & briquetting powdersDouble roller press operating principle:
Difference of Double roller press type A and type B
Double roller press technical parameter:
type A takes SOP for instance,final granules are irregular/angular
| Type Item | SG-240A | SG-360A | SG-500A | SG-600A | SG-650A |
| Roller dia. | Φ240 mm | Φ360 mm | Φ504 mm | Φ600 mm | Φ650 mm |
| Available roller width | 80/120/160 mm | 180 mm | 300 mm | 310 mm | 330 mm |
| Roller rotating speed | 5 to 35 rpm | 3 to 26 rpm | 14 to 20 rpm | 12 to 18 | 10 to 16 |
| Power of screw feeder | 4 kw | 7.5 kw | 11 kw | 11 kw | 15 kw |
| Pre-pressure of accumulator | 5 Mpa | 6 Mpa | 8-10 Mpa | 8-10 Mpa | 10-14 Mpa |
| Max. linear pressure | 65 kN/cm | 65kN/cm | 70(75) kN/cm | 70(75) kN/cm | 70(75) kN/cm |
| Thickness of compacted material | 2 to 6 mm | 6 to 8 mm | 10 to12 mm | 12 to 14 mm | 14 to 16 mm |
| Compacting productivity | 800 to 2,000 kg/h | 2,500 to 3,000 kg/h | 6,000 to 8,000 kg/h | 8,000 to 10, 000 kg/h | 10,000 to 12,000 kg/h |
| Power of compacting machine | 11 kw | 30 kw | 75 kw | 90 kw | 110 kw |
| granules output | 200 to 600 kg/h | 1,000 to 1,200 kg/h | 2,500 to 3,000 kg/h | 3,000 to 3,600 kg/h | 3,500 to 4,500 kg/h |
| Final granules size | 1 to 5 mm | 1 to 5 mm | 1 to 5 mm | 1 to 5 mm | 1 to 5 mm |
| Total power of whole line | 35 kw | 50 kw | 110 kw | 125 kw | 165 kw |
| Size of feeder and compactor (l*w*h) | 1850*1500*1650 mm | 2350*2000*2400 mm | 3650*2250*2500 mm | 3660*2450*2700 mm | 4000*2600*3300 mm |
| Weight of feeder and compactor | 2,500-3000 kg | 6,000 kg | 15,000 kg | 20,000 kg | 25,000 kg |
| Delivery time | 25 day | 30 day | 45 day | 60 day | 60 day |
Double roller press consists of screw feeder (upper taper) and double roller compactor
Double roller press's peripheral equipments
Double roller press final variable shapes
Products and rollers
Double roller press line is being loaded into one 40ft. container.
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