ball mill working principle

ball mill working principle

Ball mill is one of the high fine grinding machine is widely used in industrial production, there are a lot of its type. It is widely used in mineral processing, building materials and chemical industry etc. But do you know how does it work? this paper will mainly explain the working principle of ball mill for you.

Ball mill is composed of horizontal cylinder, access to materials and a a hollow shaft and other parts. Material from the mill feed end of the hollow shaft into the cylinder body , cylinder rotation when the mill when grinding due to inertia and centrifugal force, friction force , so that it was taken away on the cylinder liner near the cylinder, when being brought to a certain height , because of its own gravity has been thrown down , falling like a projectile , like grinding the material to the cylinder body crushed.

Material from the feed device evenly into the mill first position into the compound empty-axis spiral, the warehouse has ladder liner or corrugated liner, built all kinds of balls, rotating cylinder produces centrifugal force to the ball a certain after the height of fall, have severe impact on the material and abrasive. Material in the first position kibble, after single-compartment plate into the second warehouse, the warehouse lined with flat lining, the steel ball, the material to further grinding. Powder through the discharge grate plate to complete the grinding operation.

Cylinder in the course of rotation, grinding media also has a slip, in the process of falling to the material to abrasive action. In order to effectively use abrasive effect, on the particle size of materials to teach large general purpose Ground twenty, when the mill cylinder body with a compartment plate divided into Sec, namely a two-position, the material into the first position when they were hit balls broken material into the second position when the steel section of the grinding material, grinding the material passing discharged from the discharge end of the hollow shaft of the feed material for grinding small particles, such as when the sand II slag, coarse pulverized coal gray, not to set clapboard mill shell, a single-chamber tube mill, grinding steel segment can.

Raw materials through the hollow journal to be milled into a hollow cylinder, the cylinder built with various diameters grinding media. When the cylinder about a horizontal axis at a constant speed of rotation when mounted on the cylinder and the medium under the action of centrifugal force and material friction, with the cylinder reaches a certain height, is greater than when the centrifugal force of its own gravity, then from the cylinder falling or rolling down the inner wall of the projectile, due to the impact force to crush ore. While the rotation of the mill, the grinding media for sliding movement between each abrasive material is produced. After grinding the material discharged through the hollow journal.

bauxite processing plant, bauxite ore crushing and ore grinding equipment

bauxite processing plant, bauxite ore crushing and ore grinding equipment

As we know, bauxite ore is very hard, so it takes a longer time for crushing. In the bauxite processing, the Jaw Crusher is used in the coarse crushing, and Impact Crusher is used in the secondary, Cone Crusher is in fine crushing. Usually, according to the quarry conditions, mobile crushing plants are also used in the bauxite quarrying. Bauxite particles should be further grinded by the use of grinding mill. And the types of grinding mill are varied, including Ball Mill, LM series Vertical Shaft Mill, T130X Superfine Roller Mill, and Raymond Mill, etc. To get aluminium concentrate, it adopts the method of gravity separation, adopting a Spiral Classifier.

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