The principle of graphite ball mill, how to choose flake graphite ball mill

The principle of graphite ball mill is the same as that of ordinary ball mill. It rotates the cylinder of the ball mill to drive the steel balls and materials in the cylinder, and uses the impact force and self-grinding to achieve the purpose of crushing the materials in the cylinder.However, graphite ore is different from other minerals, especially flake graphite. During the grinding process, care should be taken to protect the graphite flakes to avoid waste of resources.

The graphite ball mill is composed of a combination of cylinder body, transmission device, feed end, discharge end, bearing, reducer, motor and other structures.

The working principle of the graphite ball mill is: the cylinder of the ball mill is driven to rotate slowly by a transmission device, and the graphite ore is fed from the feeding end of the cylinder. In the cylinder, the material can be crushed due to the impact and self-grinding of the steel ball and the ore itself.

As the graphite ore is continuously fed into the feeding end, the pressure causes the graphite ore in the cylinder to move towards the discharge end.Graphite ore that reaches the particle size of the finished product is discharged from the discharge end of the cylinder.

When wet grinding, the material is brought out by the water flow; when dry grinding, the material is brought out by the air flow.The lattice energy-saving ball mill has a discharge grid at the discharge end. The ball mill relies on the lattice plate to force the discharge of ore. The slurry surface in the cylinder is low, which reduces the ore over-grinding and prevents the steel ball from being discharged.Under the same production conditions, the production capacity is higher than that of overflow ball mills.Rolling bearings are used at both ends of the cylinder to replace sliding bearings, which saves significant energy.

How to choose flake graphite ball mill

Flake graphite ore is formed by high-pressure metamorphism. It is generally cyan-gray, and yellow-brown or off-white after weathering. The symbiotic minerals are more complex, mainly accompanied by feldspar, quartz, biotite, pyrite, magnetite, rutile and other impurity minerals.

For flake graphite, the size of its scales is one of the important quality indicators. In the process of grinding, it will inevitably cause a certain degree of wear on the scales. Therefore, when choosing a ball mill, attention should be paid to avoid over-grinding.

Special attention should also be paid to the design of the process. Flake graphite has good floatability, so flotation is generally used to select graphite ore.In terms of process design, it is recommended to use a multi-stage re-grinding and multi-stage re-selection process of coarse concentrate, so that the large flake graphite that has been dissociated can be sieved in time, and the flakes can be avoided from being repeatedly ground and broken.Screen out the graphite flakes that meet the particle size requirements in time to protect the graphite flakes.

When processing flake graphite ore, the sorting method adopts multi-stage grinding and multi-stage sorting technology. Generally, one stage of grinding is generally ground to about 40% of -200 mesh and flotation is carried out, followed by multiple grinding and peeling, multiple sorting, in order to select large phosphorus flakes of graphite as soon as possible.

Common flake graphite ball mills are: lattice ball mills, overflow ball mills, straight ball mills

The above is about the working principle of graphite ball mill and the issues that should be paid attention to in the selection of flake graphite ore ball mill.In short, we should choose graphite ball mills based on the principle of protecting graphite scales from damage and resources from waste, which will definitely achieve a multiplier grinding effect with half the effort.