Grinding steel balls are the grinding media and the core components of a ball mill. They can directly affect the grinding efficiency of the whole ore processing plant and the final product quality.

During the grinding process, grinding steel balls are used for mixing and milling materials (such as minerals, paints, and chemicals) into fine powders.

Types of grinding steel balls

1. Forged grinding steel balls

Want higher grinding efficiency? For gold mining or cement industry? Then you can choose forged grinding steel balls, which are available in all stages of milling.

Forged steel ball can be divided into low carbon, medium carbon, high carbon steel ball based on the carbon percentage.

The carbon content is below 1.0%. The chromium content is 0.1%-0.5% (Generally do not contain chromium).

2. Cast grinding steel balls

As another type of grinding media, cast grinding steel balls can provide Cr (1%-28%), hardness (HRC40-66), and Diameter (10mm-150mm) alloy cast steel balls.

They can be divided into low chromium, medium chromium, high chromium, super high chromium grinding ball (CR12%-28%).

The difference between Forged and Cast grinding steel balls

Two types of grinding steel balls have different wear degree, as they are processed by different heat treatment methods.

Forged grinding steel ball: Water quenching is often used for forging steel balls, so its broken rate is high.

Cast grinding steel ball: It adopts high-temperature quenching and tempering treatment to make the grinding balls more tough and wear-resistant.

Sizes of grinding steel balls:

Each grinding balls are round balls with precise dimensions. The sizes of grinding steel balls can be designed according to customer requirements.

Generally, the ball diameter is between 20mm and 125mm. You can also design 10mm, 11mm or other diameters of steel balls.

Small steel balls: 40mm or 60mm.

Medium balls: 80mm.

Large steel balls: 100mm or 120mm.

Super large balls: 130mm to 150mm.