Introduce the operation principle of various types of ball mills

The level of material or slurry in an overflow ball mill depends on the size of the hollow journal at the discharge end. The material level is usually higher than that of the lattice type ball mill. Because the broken product of the machine is discharged through the hollow journal overflow, under certain conditions, the discharge is not as smooth as the lattice type ball mill, so that some products that have reached the fineness of the grinding can not be discharged in time, but continue to receive the steel The ball's impact and grinding result in "over-smashing." This only consumes energy and steel, and it brings difficulties to the next step, which may produce substandard products.

The lattice type ball mill utilizes a discharge grid to accelerate the discharge. The material level near the grid plate is lower in the simplified Chinese, so that the ratio of the material weight to the steel ball weight is low, and the material is subjected to a stronger impact and grinding of the steel ball. The faster discharge allows the grinding efficiency and throughput to be increased and the over-composting phenomenon is reduced. Henan mineral processing equipment attaches great importance to this aspect.

There are many variations in the shape, size, and arrangement of the lattice panels (discharging jaws), and these factors can affect the grinding effect of the mill, whether the holes are blocked, and the throughput of the material. In order to prevent the material or small steel balls from blocking the holes, the holes of the grating are usually inclined, that is, the width of the holes increases as the material passes through. The slope is usually 3 degrees to 6 degrees, and the width of the screen at the small end is 8 ~ 20mm. Lattice boards are generally made of high-manganese steel.

This lattice mill can be used for dry and wet grinding. When dry grinding, the ground product is powder, and the dry powder flow element is very good. It can be cut off from the feed end through the grid plate to the discharge end, and also cast or welded in the discharge pipe. Feeding screw blades, the spiral direction and the direction of rotation of the ball mill is the same, in order to prompt the material out of the machine. When wet grinding, the outer end of the discharge pipe is made into a bell mouth shape to facilitate the outflow of the slurry.