BALL SORTING MACHINE
FTR Makina A.Ş.is manufacturing its own design Ball Sorting Machines in Türkiye.
It is a fact that a Ball Mill circuit is a grinding process by the help of grinding media, especially by Hi Cr Balls. The proper ball charge and grinding balls are one of the key points of the grinding process. So, the user must be sure about the proportion of each media size in the ball mill with the right quantity and distribution.
Why Sorting of the Balls?
As the time goes by, the distribution/proportion of the grinding ball sizes inside the ball mill gets changed, as a natural outcome of wear phenomena and/or breakage of the balls. Therefore the grinding efficiency drops. Every ball mill has a unique process result due to its physical condition, size, circuit, ground material, finish product type and auxiliary equipment. There is, however, a global thumb-rule for every ball mill that its best working condition is achieved by proper ball charge distribution determined by process experts (classification of 2nd chamber ball charge in 2 chamber mills is a good example of this fact). The importance and effect of proper ball charge distribution are proved by many lab tests as well as real industrial applications.
To sort the balls manually requires a big amount of time costing money and labor.
For example;
A ball mil with 4,0 m diameter will have the following figures;
If the mill has 2 chambers:
there are approximately 3,6 million balls available in the mill
If the mill is mono chamber due to Roller Press:
there are approximately 4,0 – 4,2 million balls available in the mill.
It is essential to keep the best pre-determined ball charge distribution inside the ball mill as much as possible for its efficiency.
For this purpose, generally, the recommendation is to sort 1st compartment ball charge once a year and 2nd compartment ball charge every 2 years.
Ball Sorting Machine general properties:
| Feeding material | Grinding balls |
| Grinding media shape | Spherical |
| Feed material size | Up to Ø100mm |
| Capacity | Max 25 ton/hour (depend on ball size) |
| Speed of sorting roller | 40 : 60 rpm |
| Ball discharge chutes | 10 below sorting roller |
| Sorting cylinder drives | 2 gear motors |
| Nominal power of gear motors | 2×2.2kW or higher |
| Vibrator feeder | 1650mm × 580mm |
| Vibrator feeder drive | 50HZ 380-400V |
| Feed bin opining | 3270 mm |
| Total length | 7150 mm |
| Total width | 2900 mm |
| Total height | 3750 mm |
| Total weight | 7 Ton |
