Birullo Mills - Pennati Costruzioni Meccaniche S.r.l.
It crushes by compression and can achieve high throughputs (up to 15 tonnes per hour); product size is achieved by a dynamic selection system built into the mill.
Crushed product is discharged by a pneumatic conveying system.
The standard machine is provided with a filter for the separation of the aeriform phase from the solid phase (crushed product) and an exhaust fan which keeps the entire line under suction.
The PLC control automatically regulates incoming feed rates and main process parameters.
The Birullo mill is available in four different sizes based on the throughput required.
- Features
- Grinding rollers in Ni-hard cast iron alloy, mounted on roller bearings force-need oil lubricated.
- Track in crom-hard cast iron alloy, divided into 4 parts.
- Possibility of grain size adjustment by means of dynamic selector driven by frequency inverter.
- There is no reciprocal contact between the grinding rollers and the track; there is always a certain space between them, that is held by some proper spacings; the distance can be changed in such a way as to remain the same as the consuption increases.
- The rollers rotation is due to the friction of the material only.
- There is the contemporary drying of the wet materials, by hot air.
- Working is completely automatic; the feeding is driven by electronic equipment.
- The pneumatic circuit is in suction, in order to avoid any dust.
- Models & sizes
- How does it work
The raw material gets into the mill through the inlet charge in the pos. 1, and falls on the rotating track in the pos. 2, that is driven by the gear reduction unit in the pos. 3. The material insinuates under the grinding rollers in the pos. 4 (idle on the shafts integral with rocker arms in the pos. 5) and causes them to turn and grind. During grinding, the rollers rotate and swing integral with the arms in the pos. 5, having their fulcrum in the hinges of the pos. 6. The swinging is opposed by the springs in the pos. 7. Through the opening in the pos. 8, air is sucked into the mill and lifts all grinded material up to the rotating dynamic selector in the pos. 9. Coarse grinded material is re-cycled by the selector and falls down to the track, then it is further on refined, while the finest grain size is sucked pneumatically through the air intake in the pos. 10. The rotary selector speed can be adjusted by the inveter in the MCC, and it changes the RPM of the electric motor in the pos. 11.
- References list of fine pulverization Plants by "Birullo" Mill
Plant location Units no. Model Capacity /
each millRaw Material Puerto Madryn - Argentina 1 EC 140 13 Petroleum coke Fusina - Italy 1 EC 98 7 Petroleum coke Bolzano - Italy 1 EC 98 2 Petroleum coke Balangero - Italy 4 EC 170 60 Serpentine Balangero - Italy 2 EC 98 4 Serpentine Vado Ligure - Italy 2 EC 98 7 Phosphorite San Celoni - Italy 1 EC 98 2 Calcium carbonate Brindisi - Italy 1 EC 140 20 Phosphorite Arsiero - Italy 1 EC 98 2 Bentonite Trino Vercellese - Italy 1 EC 98 3 Coal Barletta - Italy 1 EC 98 4 Coal Pescara - Italy 1 EC 98 4 Coal Pescara - Italy 1 EC 140 15 Marn Collebeato - Italy 1 EC 140 11 Marn Collebeato - Italy 1 EC 170 16 Marn Sassoferrato - Italy 2 EC 98 6 Marn Pederobba - Italy 1 EC 140 15 Marn Riva Sul Garda - Italy 1 EC 140 13 Marn Trino Vercellese - Italy 1 EC 140 15 Marn Trino Vercellese - Italy 1 EC 170 25 Marn Tavernola Bergamasca - Italy 2 EC 98 4 Coal Tavernola Bergamasca - Italy 1 EC 140 11 Marn Bilbao - Espana 1 EC 98 4 Coal Marone - Italy 1 EC 98 3 Dolomite Ascoli Piceno - Italy 1 EC 120 5 Oil coke Ascoli Piceno - Italy 2 EC 98 3 Oil coke Narni - Italy 2 EC 98 2 Oil coke Larderello - Italy 2 EC 98 8 Colemanite Porto Marghera - Italy 3 EC 98 5 Magnesite Ozzano Monferrato - Italy 1 EC 140 14 Marn Sala Al Barro - Italy 1 EC 140 11 Lime Bilbao (Spagna) 1 EC 98 2 Calcium carbonate Monte Marciano - Italy 1 EC 98 10 Phosphorite Solignano - Italy 1 EC 98 2 Coal Mettur - India 1 EC 98 2 Oil coke Bolzano - Italy 1 EC 98 2 Ferrosilicon Bolzano- Italy 1 EC 80 2 Lime Este - Italy 1 EC 98 3 Oxides Crotone - Italy 2 EC 98 7 Phosphorite Porto Empedocle - Italy 1 EC 140 20 Phosphorite Porto Empedocle - Italy 2 EC 98 6 Phosphorite Orbetello- Italy 1 EC 98 6 Phosphorite Piano D'Orta - Italy 1 EC 98 10 Phosphorite Porto Marghera - Italy 5 EC 98 8 Phosphorite Romano Lombardo - Italy 1 EC 98 9 Phosphorite Pamplona - Espana 1 EC 98 7 Phosphorite Giovenzano - Italy 1 EC 98 2 Calcium carbonate Valencia - Espana 1 EC 98 4 Coal Lanzo Torinese - Italy 1 EC 98 3 Talco Sestri Ponente - Italy 1 EC 98 5 Hydrated lime Targia - Italy 1 EC 140 13 Marn Lugagnano - Italy 1 EC 140 13 Marn Cartagena - Colombia 2 EC 98 8 Lime Genova - Italy 1 EC 140 12 Calcium carbonate Tavernola Bergamasca - Italy 1 EC 98 3 Marn Lauriano - Italy 1 EC 140 13 Marn Livorno - Italy 2 EC 98 2 Talc Figueras - Espana 2 EC 98 2 Talc Riyad - Saudi Arabia 1 EC 170 12 Calcium carbonate Fabriano- Italy 1 EC 120 4 Calcium carbonate Nocara Umbra - Italy 1 EC 170 12 Calcium carbonate - Grain size diagrams
- Capacity
- Typical installations
- Pictures
Back to milling and grinding machines