Grinding Balls
Sizes: 20mm-150mm
Materials: high chromium cast iron grinding balls, forged grinding balls, ceramic grinding balls , etc.
Applicable equipment: ball mill for limestone, coal mill, and rod mill
Ball Mill Balls for Sale
Grinding balls are a type of grinding media used in industry to grind and crush materials; they are wear-resistant parts. Grinding balls are an important part of the limestone ball mill, coal mill, and rod mill. The material, size, and hardness of grinding balls will affect grinding efficiency and energy consumption. AGICO’s grinding balls are usually made of high-hardness and high wear-resistant material. They are hard, with good wear resistance, and not easy to break. The materials have metal grinding balls and ceramic grinding balls, and the craftsmanship has forging and casting to suit the grinding requirements of different materials. The sizes range from 20mm to 150mm.
Why Choose AGICO's Grinding Balls
Excellent material
AGICO’s grinding balls use high-quality raw materials, high hardness, good wear resistance, and are not easy to break. Grinding balls have a long service life to reduce overall grinding equipment downtime.
High efficiency
The efficiency of grinding equipment is closely related to the material and hardness of the grinding balls. The high-quality grinding balls can offer optimal grinding force and improve overall operational efficiency.
Strict quality
AGICO conducts strict quality inspections on grinding balls, including hardness testing, impact testing, chemical composition testing, and other tests. Ensure products meet the highest standards.
Rich business
AGICO has more than 20 years of industry experience. Our products have been sold to more than 20 countries. We can offer customized service and perfect after-sales service for our customers.
Material of Grinding Balls
—— The size range of grinding balls is from 20mm to 150mm. You can choose the most suitable diameter size according to different grinding requirements. In the lime calcination plant, the ball mill coarse grinding selection is 50mm~150mm, and the ball mill fine grinding can be selected from 20mm~50mm.
Metal Grinding Balls
- Metal grinding balls have high chromium cast iron grinding balls and forged grinding balls. They are made of high-hardness alloy steel and produced by casting or forging. High chromium cast iron grinding balls have high hardness and wear resistance. Forged grinding balls have high toughness and impact resistance.
Ceramic Grinding Balls
- Ceramic grinding balls have alumina grinding balls and zirconia grinding balls. They are made of high-purity oxides or carbides. Ceramic grinding balls can be used to grind coatings, paints, ceramic glazes, etc. Ceramic grinding balls are chemically stable and pollution-free.
Forging Grinding Balls VS Casting Grinding Balls
Forging grinding balls:
Forging grinding balls involves heating the billet to approximately 1200°C, then using the forging press or air hammer to repeatedly beat it until it forms a ball. This process can make the internal structure of steel denser. Then it goes through the quenching and tempering process to optimize hardness and toughness, and finally polishing and grinding.
- Carbon Content: 0.38% – 1.05%
- Hardness: HRC 48-65
- Diameter: 10mm-150mm
- High Toughness: The fiber structure inside the grinding balls is streamlined and not easy to break or crack.
- Adjustable Hardness: The internal hardness can be adjusted by heat treatment.
- Internal Density: There are no pores or shrinkage holes inside, and the quality is stable.
Casting grinding balls:
Casting grinding balls involves pouring the molten iron into the mold. After cooling, demoulding is done. This process is simple and can be mass-produced. Casting grinding balls have high chromium cast iron grinding balls and low chromium cast iron grinding balls. The strength and density of casting grinding balls are lower than those of forging grinding balls.
- Chromium Content: 1% – 28%
- Hardness: HRC 40-60
- Diameter: 10mm-150mm
- High Hardness: Very high hardness and excellent wear resistance.
- Low Cost: It is cheaper than forging grinding balls and can be produced in large quantities.
- High Brittleness: It is easy to produce defects such as pores and shrinkage holes inside.
Guide to Purchasing Grinding Balls
Identify grinding needs:
- What is the hardness, moisture content, and lumpiness of the grinding material? Is your equipment a ball mill for limestone, a rod mill, or another type of mill? Do you need a coarse or fine grind?
Balls for ball mill performance:
- Balls for ball mill performance determine grinding efficiency and cost. The higher the hardness, the better the wear resistance. But the hardness is too high, which will lead to increased brittleness. You can contact AGICO to help you with more specific choices.
Reliable manufacturer:
- You should choose a professional manufacturer that has years of experience. Understand whether the manufacturer forges or casts the balls for the ball mill. And is there a complete quality inspection system and perfect after-sales service?
Optimize costs:
- Procurement cost does not only refer to the unit price, but we should consider the cost comprehensively. It usually includes the unit price of balls for the ball mill, consumption cost, energy cost, and maintenance cost, etc.
FAQ
Does the size of balls for ball mill have anything to do with mill efficiency?
Yes. Larger balls for ball mills have greater kinetic energy and higher grinding efficiency. Smaller balls for ball mills can grind materials finer and more evenly.
Can large and small grinding balls be used together?
Yes. One of the most common and effective methods for optimizing grinding efficiency is to use a combination of large balls for the ball mill and small balls for the ball mill. This is called mixed ball mixing.
Does the filling rate of balls for ball mill have any effect on mill performance?
Yes. A fill rate that is too low will result in insufficient grinding of the material. A fill rate that is too high will reduce the movement space and weaken the impact force. The optimal fill rate is between 30% and 40%.