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Ball Grinding Machine

Ball Grinding Machine

Ball Grinding Machine Type Comparison

The Ball Grinding Machine is the key equipment for crushing the material after it has been crushed. It is the current grinding machine used in the concentrator. According to different mining methods, Ball Grinding Machines can be divided into lattice type Ball Grinding Machines and overflow Ball Grinding Machines. So what is the difference between these two Ball Grinding Machines?


1, The Structure Is Basically The Same

The structure of the two Ball Grinding Machines is basically the same, mainly consisting of the cylinder part, the ore supply department, the mine discharge part, the bearing part, the transmission part and the lubrication system.

2, The Workflow Is Similar

During the work, after the ore is sent to the cylinder, the cylinder will rotate around the horizontal axis according to the specified speed. At the same time, the ore will be freely plunged or thrown by the centrifugal force and the friction of the grinding medium, thus being impacted and It is pulverized by grinding and peeling, and the products after grinding are discharged through the discharge department.

The Difference

1. Structure Of The Mine Discharge Department

The basic structure of the two is the same as the milling process, but the structure of the mining department is different.

The grid side of the lattice type Ball Grinding Machine is equipped with a lattice liner, and one grid plate is arranged at the discharge end, and a plurality of discharge holes are arranged on the grid plate. The milled pulp passes through the lattice liner and is lifted to a level higher than the discharge port through the fan-shaped chamber leading to the discharge port, so that the slurry is discharged from the mill.

The overflow type Ball Grinding Machine does not have a lattice lining on the discharge side, but on the inner surface of the hollow journal bushing at the discharge end, a spiral blade with a spiral direction and a rotating direction of the mill is arranged to prevent the water ball. Or the coarse ore nugget is discharged together with the slurry. The overflow of the overflow type Ball Grinding Machine is self-flowing by the slurry itself higher than the lower edge of the hollow journal bushing. The reason for the machine).

2, The Discharge Granularity

The upper limit of the particle size of the grating type Ball Grinding Machine grinding product is generally 0.2 to 0.3 mm, so it is often used in the first stage of grinding, and often forms a closed circuit cycle with the spiral classifier.

The overflow type Ball Grinding Machine grinding product is generally less than 0.2mm in size, which is suitable for re-grinding of concentrates and can obtain finer qualified products.

3, Discharging Method

The grid type Ball Grinding Machine discharges through the sieve plate, and the material of the overflow type Ball Grinding Machine is automatically overflowed. When the material level is higher than the discharge port, the material is automatically discharged.

4, Production Capacity

The working characteristics of the lattice type Ball Grinding Machine are mainly forced discharge and high production capacity. The mill is placed in the first stage of grinding operation, which can obtain higher processing capacity, but the product granularity is coarser than that of the overflow type Ball Grinding Machine.

5, Grinding Effect

The steel ball inside the lattice type Ball Grinding Machine is large and small, and when the steel ball is lifted to a certain height to fall back, the relatively low pulp surface has a large drop height, so the impact of the steel ball on the material is better. Strong, the crushing effect on the mineral material is large, and the grinding effect is better.

6, Over-Grinding Phenomenon

The lattice type and the fan-shaped indoor lifting bucket of the lattice type Ball Grinding Machine realize a low level of forced discharge. The finely ground ore particles stay in the Ball Grinding Machine and are discharged in time, reducing the crushed stone. Smash phenomenon.

The overflow type Ball Grinding Machine belongs to the unforced high level discharge, the discharge speed is slow, and the mineral material stays in the machine for a long time, so the over-grinding phenomenon is serious.

7, Maintenance Difficulty

In contrast, the overflow type Ball Grinding Machine has a simple structure and convenient maintenance, and the structure of the grid type Ball Grinding Machine is easy to block the grid plate during work, and the maintenance is complicated.

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