In the closed circuit grinding of feildspar grinding ball mill, the amount of sand return has a great influence on the grinding efficiency and output. 

 

under the conditions of a certain particle size, feildspar grinding ball mill processing ore volume is increased with the increase of sand return. If the amount of sand returned with the increase, then the feildspar grinding ball mill to handle ore is increased. The way to increase the amount of ore that can be handled is to: First, add coarse-grained products over a range of particle sizes, ie reduce over-pulverization. Second, increase the number of particles that are close to the acceptable particle size when subjected to grinding in the ball mill for each period of time.
 

 

Through years of work experience, we conclude the above conclusions. This conclusion is that in conditions of closed-circuit grinding, the amount of sand returned becomes an indicator of grinding because the size of the material to be crushed is gradually reduced to the required size.

 

The power consumed by the feildspar grinding ball mill does not increase due to the amount of sand returned, and in some cases even lower. The amount of material through the ball mill is affected by the amount of back to the sand, so in the choice of closed ball size and ball loading, not only to consider the mine, but also consider the total feeding(including the amount of Sand Return).

 

The large amount of sand return does not mean that the grinding operation is good, because the amount of sand returned should be higher for the hard rock at the same feed rate and should be lower for the soft ore. In addition, the total volume of ore fed per hour of ball mill volume is also an indicator of equal importance to the amount of sand returned. The total amount of ore can be raised to the maximum value that the mill barrel can pass.
 

If you need feildspar grinding ball mill, or have any question about it, please contact us!