Ball mills and SAG
Ballmills
Officine Contessacciai srl builds customized ballmills of any diameter, length and weight (possible replacement of old machines on existing concrete foundations) for grinding and reduction to sand of very hard materials such as rocks, glass, crystals and recycling , using two types of drums depending on the types of productions:
with diaphragm and lateral discharge LD
with axial discharge AD
and three types of transmission:
- PCT: electrical motor, elastic joint (or hydraulic coupling), gearbox, toothed coupling, countershaft with pinion and big toothed crown fixed on the drum.
- DT: electrical motor, elastic joint (or hydraulic coupling), big gearbox, big toothed coupling and big shaft in the transmission head
- GMD: gearless motor drive
Axial discharge with grate for wet and dry grinding and lateral discharge with diaphragm for dry grinding.
Standard production is with the following diameters and details:
| Rodmill type | Internal diameter (mm) | Drum length (mm) | Discharge type | Type trasmission | Power (KW) |
|---|---|---|---|---|---|
| BM12 | 1200 | From 2000 | LD,AD | PCT,DT | Da 45 |
| BM15 | 1500 | From 3000 | LD,AD | PCT,DT | Da 75 |
| BM18 | 1800 | From 3500 | LD,AD | PCT,DT,GMD | Da 90 |
| BM21 | 2150 | From 4500 From 1500 SAG |
LD,AD LD,AD |
PCT,DT,GMD PCT,GMD |
Da 132 Da 250 |
| BM24/27/30 | 2400/2700/3000 | From 4800 From 1500 SAG |
LD,AD | PCT,GMD | Da 355 |
Coding example: BM 1535 AD/PCT
- RM 15 (1500mm of drum) 35 (3500mm drum length) AD (Axial discharge) PCT (crown and pinion transmission)
(with discharge CD and AD not possible DT transmission
Optional available:
- internal lining of drum in rubber/metal or manganese steel casting plates
News 2023 the manganese steel lining of drum with new drawing, high wave and manganese 18% - mechanic safety drum block during maintenance (*)
- feeder screw or conveying trough (*)
- discharge conveyor belt (*)
- total safety fence (*)
- electrical cabinet with frequency control (*)
- man pass on the drum (only in the BM12/15/18)
- lubrication system (*)
- high quality forged balls charger
(*) Mandatory for GMD rodmill
