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Several major reasons that affect wear of wear-resistant steel balls in ball mills

July 12, 2021

Guidance: Wear-resistant steel ball wear in the operation of the ball mill, will continue to affect the ball mill's work efficiency and work process, affecting the efficiency, then in the usual working conditions, wear-resistant steel What causes the ball in the ball mill?

Casting Materials (79)

The following are four major reasons to summarize:

1. Types and properties of wear resistant steel ball media

In the case of wear-resistant steel balls and the same materials, the wet-grinding wear is more severe with wet-grinding than with dry-grinding. In the case of wet abrasion, if the ball is in contact with a certain acid and alkaline medium, corrosion will occur. Wear and erosion are mutually exciting, and the cutting of the material destroys the passivation film and exacerbates the corrosion. As a result, wear of the wear-resistant steel ball under wet grinding conditions is significantly higher than the additive value of corrosion and wear alone.

2. About the diameter and speed of the ball mill

The higher the speed of the ball mill and the larger the diameter, the greater the speed of movement of the ball. When the diameter of the ball mill exceeds 3 meters, it will increase the impact force of the steel ball and accelerate the degree of wear. However, its rotation speed should not be too low, otherwise it will affect the work efficiency of the ball mill.

3. Wear-resistant steel ball diameter, mix ratio and load capacity

The greater the mass of the ball, the greater the diameter. When the speed of the ball mill is constant, the greater the kinetic energy of the ball falling, the greater the impact of the ball. The proportion between the grinding balls has some influence on the wear process. The collision probability between the grinding balls with the same diameter is more, and the higher the impact probability is, the more the wear process tends to fatigue wear. When the load of the ball is larger, the collision probability between the ball and the ball is greater, and the wear process is more prone to fatigue and wear.

4. The nature of the material

The hardness, brittleness, shape and size of materials all have an important influence on the cutting process of wear-resistant steel balls. If the hardness of the material is much lower than the hardness of the wear resistant steel ball, the fatigue wear of the wear resistant steel ball occupies a larger proportion.

The above mentioned four factors affect the wear of the wear-resistant steel ball in the ball mill. During the operation of the wear-resistant steel ball, the above-mentioned four conditions are discovered in time to increase the production efficiency.

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Author:

Mr. Ken Luo

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