The model 490 cylinder mill is used to grind various materials and minerals of a soft, semi-hard and hard nature.
It uses the principle of grinding by compression: product size is guaranteed by adjusting the gap between the grinding rollers, by means of micrometric screws and a visual measurement scale.
Crushed product is discharged by gravity.
The product is crushed by forcing it on entering the machine to pass through the gap between the two counter-rotating cylindrical rollers which can be activated independently; this may take place in various stages, in cascade to produce ever finer particle sizes.
The technical features and the throughput achieved make the cylinder mill particularly suitable in those cases where it is necessary to keep the content of ultra-fine powders in the crushed product to a minimum.
The cylinders may be smooth or ridged, in mild steel, stainless steel or in alloy cast iron.
Features
One or more stages, they are used for controlled outlet grain size crushing of different kinds of materials in case it’s required to minimize the ultra-finest content of powder. The cylinders external surface can be smooth or ruled, in carbon steel or anti-wear cast alloys.
Every cylinder has one driving unit of his, with peripheral speed from 3 m/secs to 10 – 12 m/secs. One cylinder is fixed, the other cylinder is flowing on cursors, with adjustable pre-loading springs device, or pistons with hydraulic driving and accumulator with nitrogen in pressure. In the case of use of smooth cylinders, blades of cleaning are used in steel K100 adjustable from the outside. Shafts provided with self-aligning roller bearings.
Possibility of regulation of the free distance between the cylinders by calibrated thickness. Sealed casing complete with dedusting nozzles. Sealing by gland packings, sealing rings. Strong supporting frame complete with flanged outlet hopper. Inlet opening all along the actual working length of the cylinders.
Reference list cylinder mills 490
| PLANT LOCATION | TYPE | Units No. | PRODUCT | CAPACITY ton/h each | Installed Power kW |
|---|---|---|---|---|---|
| San Benedetto del T. - (AP) (Italy) | 490/45x40 | 1 | Composite pellets | 1 | 2x7,5 |
| Cuneo (Italy) | 490/45x80 | 1 | Calcium carbonate | 10 | 2x22 |
| Brescia (Italy) | 490/25x40 | 1 | Galvanic manganese | 1.2 | 2x4 |
| Arabia Saudita | 490/60x120 | 1 | Calcium carbonate | 12 | 2x30 |
| Arabia Saudita | 490/45x50 | 2 | Felspar | 3.5 | 2x7,5 |
| Cina | 490/40x50 | 1 | Paraformaldehyde | 5 | 2x11 |
| Castellanza (Italy) | 490/45x80 | 1 | Mould sand | 20 | 2x22 |
| Sardegna (Italy) | 490/45x80 | 1 | Salt | 30 | 2x37 |
| Milano (Italy) | 490/60x100 | 1 | Granulated slags | 30 | 2x45 |
| Castellanza (Italy) | 490/45x80 | 1 | Mould sand | 20 | 2x22 |
| Sorrento (Italy) | 490/40x50 | 1 | Adamsite | 2 | 2x7.5 |
| Forlì (Italy) | 490/60x40 | 3 | Bottom ash | 3 | 2x5.5 |
| Rimini (Italy) | 490/60x40 | 3 | Bottom ash | 3 | 2x5.5 |
| Barletta (Italy) | 490/45x80 | 2 | Granular NPK | 12 | 2x22 |
| Genova (Italy) | 490/40x50 | 1 | Solidified slags | 3 | 2x11 |
| Avezzano (Italy) | 490/20x40 | 1 | Metal alloys | 2 | 11 |
| Avezzano (Italy) | 490/20x40 | 3 | Metal alloys | 2 | 11 |
| Avezzano (Italy) | 490/14X15 | 2 | Metal alloys | 0,5 | 2X4 |
| Sardegna (Italy) | 490/120x100 | 1 | Feldspar | 20 | 2x55 |
| China | 490/80x160 | 4 | Eureka Pitch | 8.5 | 2x55 |
| China | 490/40x50 | 1 | Eureka pitch | 2.5 | 2x4.0 |
| Sardegna (Italy) | 490/45x80 | 1 | Feldspar | 10 | 2x22 |
| China | 490/40x50 | 1 | Ammonium sulphate | 8 | 2x7.5 |
| Ferrara (Italy) | 490/60x40 | 1 | Bottom ash | 3 | 2x5,5 |
| Ravenna (Italy) | 490/45x80 | 2 | Granular NPK | 8 | 2x22 |
Images
Technical docs
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