Grinding ball

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cement ball mill balls

Ball mill balls for sale

Material: High carbon steel, alloy steel, stainless steel, ceramics, etc

Sizes: 20-125mm or customized by drawings

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The grinding ball, is also known as grinding media or ball mill ball is the medium used to grind the material in the ball mill. In actual use, the steel ball, the material, and the cylinder wall constantly collide and friction, and the steel ball itself will also produce consumption.

We specialize in the production of cast grinding balls, ball mill forging steel balls, wear-resistant steel balls, grinding steel balls, forged steel balls, and forging balls. Our grinding balls are mainly used in mining, power plants, cement, chemical, and other industries, and can improve economic benefits for users to save production costs. The hardness of our grinding ball is high, without losing round. Abrasive resistant, non-crushing, size from DIA20-150 mm. Our steel balls have been exported to Japan, South Korea, Australia, and other regions of the world.

The function of grinding balls

Speaking of the steel ball, it mainly plays the role of grinding materials in the ball mill, in general, the greater the hardness of the steel ball, the greater its wear resistance. On the contrary, the smaller, so if we want to improve the wear resistance of the steel ball, it is necessary to increase its hardness, but at this time with the increase of hardness, the impact toughness of the steel ball will be reduced, and the material and hardness of the lining plate should be taken into account when choosing the steel ball.

grinding balls

Materials of grinding balls

As a grinding medium, grinding balls are widely used in the grinding industry, such as concentrators, cement plants, thermal power plants, refractory material factories, etc. In the Chinese market, about 4 million tons of steel balls are consumed every year, and buyers should carefully compare the material and use the scientific ratio when buying.

The commonly used grinding ball materials in the ball mill include ordinary carbon steel balls, alloy steel balls, stainless steel balls, and so on.

Ordinary carbon steel balls

Ordinary carbon steel balls are one of the most widely used steel ball materials in ball mills. It is made of high-quality carbon structural steel material as raw material and processed by forging and surface hardening treatment. This kind of steel ball has low prices and low production cost and is widely used in the grinding operations of building materials, the chemical industry, metallurgy, and other industries.

Alloy steel ball

Alloy steel balls are made by adding alloying elements on the basis of ordinary carbon steel balls. Because of its high hardness and wear resistance, it is suitable for abrasive treatment projects with higher requirements. At the same time, the alloy steel ball has a longer service life, so it is widely used in some fields that require frequent replacement of abrasive tools, such as mining, mineral processing, and other heavy industries.

Stainless steel ball

The stainless steel ball in the ball mill is mainly made of 18-8 stainless steel or other stainless steel materials. In the chemical pharmaceutical, food processing and other industries, the material requirements for abrasives are very high, stainless steel balls are widely used in these industries because of their anti-rust, not easy to rust, and will not produce a printing pile phenomenon.

Grinding balls specification

Under normal circumstances, the diameter of the steel ball of the ball mill is between 20-125mm, which is divided into large balls, medium balls and small balls, but the diameter of the steel ball used by the super large ball mill is 130-1 50mm.

  • Large ball: 100/120mm
  • Middle ball: 80mm
  • Small Ball: 20/60mm
Ball Diameter (mm)Weight per ball (kg)Pcs per Ton
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Ball mill balls supplier – AGICO CEMENT

Ball mill ball is a hot-sale product of our company, we also supply other ball mill parts including ball mill girth gear, ball mill pinion, ball mill trunnion, and ball mill bearing house according to the requirements of clients. If you have any questions, welcome to ask!

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Because of the characteristics of steel balls, the material used in the production of steel balls should be wear-resistant, and the amount of ball loading should be in line with a certain proportion of the material.

Ball loading quantity

Under normal circumstances, it is not necessary to load the ball, after all, the steel ball wears out every day after the ball mill runs, and the big ball will become a ball. Need to consider the ratio of large, small and medium balls,

When it is turned on for the first time, 80% of the ball amount given by the manufacturer is generally loaded, and the remaining 20% is loaded after two or three days of equipment running-in.

Grading scheme

When steel balls are loaded for the first time, the proportion of large and small balls can be matched using the following two schemes.

1) Multi-level ball matching
This grading scheme is commonly used, generally using 4 or 5 different specifications of steel balls.
First measure the ball diameter and material particle size, after the ratio to ensure that the maximum ball diameter = the maximum particle size of the material, the average ball diameter = the average particle size of the material.

According to the ratio principle of “small two ends, large middle” of the grinding body and the distribution of the material particle size, the composition proportion of the steel ball is determined. After determining the ratio of steel balls and calculating the matching balls, the average diameter of all steel balls should be little different from the average particle size of the material, otherwise the balls should be re-matched.

2) Secondary match
The diameter of the large ball depends on the particle size of the material into the mill, and the diameter of the small ball depends on the pore size between the large balls. In principle, it is necessary to ensure that the amount of the small ball does not affect the filling rate of the large ball.