BALL MILL GRINDING MEDIA
Ball mill is an important grinding machine widely used in mineral dressing plants, cement plants, thermal power plants, fertilizer plants, and other fields. It mainly uses the grinding media inside the grinding chamber to refine raw materials and reduce their particle size.
There are three ways for grinding media to pulverize materials:
1. Rolling: the grinding media rolls in the grinding chamber and pulverizes the material by self-weight.
2. Impact: with the rotation of the ball mill cylinder, grinding media falls from the high place in the grinding chamber and strikes the material.
3. Sliding: some grinding media that adhered to the raw material are hard to roll. They can only grind raw materials by sliding against the lining plate.
Similar to the ball mill liner, grinding media is not only the main ball mill part but also the most easily worn consumption part. Based on various grinding requirements, different types of ball mill grinding media are needed in the market.
TYPES OF GRINDING MEDIA
Grinding media are available in a variety of shapes, sizes, and materials to meet a wide range of grinding needs. In ball mill grinders, grinding balls, grinding cylpebs, and grinding rods are the most commonly used grinding media.
Grinding Balls For Ball Mill
According to material, grinding balls can be divided into metallic grinding balls and non-metallic grinding balls.
Steel grinding ball is a kind of spherical ferroalloy grinding media with carbon, chromium, manganese, and molybdenum as the main metal additives. It has the characteristics of superb hardness and excellent wear resistance, is mainly used for large-sized industrial ball mills, and is widely applied in the mining industry, cement industry, power generation industry, etc. According to different manufacturing methods, the steel grinding ball can be subdivided into cast steel balls and forged steel balls.
Cast steel ball: cast steel ball is manufactured by heating scrap steel, scrap iron, or pig iron together with an appropriate amount of precious metal alloy to above 1550 ℃. After fully melted, they will be poured into the steel ball mold for shape forming.
The surface of the cast steel ball has a sprue gate. Its breakage rate is 3% and the carbon content is between 1.8% and 3.2%. According to different chromium contents, the cast steel ball can be classified into:
- High-chromium steel ball: chromium content ≥10%, HRC≥58%, ak≥3J/cm2
- Medium-chromium steel ball: chromium content:3%-7%, HRC≥47%, ak≥2J/cm2
- Low-chromium steel ball: chromium content: 0.5%-2.5%, HRC≥45%, ak≥1.5J/cm2
Forged steel ball: forged steel ball is manufactured by heating high-quality round bar steel to a certain temperature and forging it into a ball shape. The chromium content of forged steel ball is between 0.1% ~ 0.5%, the carbon content is less than 1.0%, and the breakage rate is 1%. Its surface is smooth without a sprue gate and is not easy to deform.
Non-metallic grinding ball refers to spherical grinding media made of non-metallic materials (SiO2, SiC) and organic polymer materials (CF). It is occasionally used in small ball mills, suitable for grinding non-sand-particle materials, relatively low hardness materials, and materials with special requirements for grinding media composition (free of contamination). It is widely used in the food industry, chemical industry, etc.
Grinding Cylpebs For Ball Mill
Grinding cylpebs is a type of grinding media with a short cylindrical or truncated conical shape. Just like the grinding ball, it can also be divided into the metallic type and non-metallic type. In large-sized industrial ball mills, we mostly adopt metallic grinding cylpbebs which include cast steel cylpebs and forged steel cylpebs.
Grinding Rods For Ball Mill
The grinding rod is a cylindrical grinding media with a certain length (50-100 mm shorter than the grinding chamber). It is usually made of high-quality steel, which has excellent wear resistance and toughness. Manufacturers mostly use steel grinding rods in rod mills for material pulverizing. As a grinding media, the steel grinding rod is suitable for mineral processing industries.
AGICO BALL MILL GRINDING MEDIA FOR SALE
Cast Steel Ball
| Model | Grade | (HRC) Hardness | Endurance Impact Test(times) |
| High-chromium Cast Steel Ball | Cr20 | ≥58 | ≥8000 |
| High-chromium Cast Steel Ball | Cr15 | ≥58 | ≥8000 |
| High-chromium Cast Steel Ball | Cr13 | ≥58 | ≥8000 |
| Middle-chromium Cast Steel Ball | Cr7 | —– | ≥8000 |
| Low-chromium Cast Steel Ball | Cr2 | —– | ≥8000 |
| Items | Size(mm) | |||||||||||||
| Φ17 | Φ20 | Φ25 | Φ30 | Φ40 | Φ50 | Φ60 | Φ70 | Φ80 | Φ90 | Φ100 | Φ110 | Φ120 | Φ130 | |
| Tolerance | +1.0-1.0 | +2.0-1.0 | +3.0-10 | +3.5-1.5 | ||||||||||
| Difference Between Max Dia & Mini Dia | ≤ 1.0 | ≤ 2.0 | ≤ 3.0 | ≤ 4.0 | ||||||||||
| Item | Chemical Composition(%) | |||||||||
| C | Si | Mn | Cr | P | S | Mo | Cu | Ni | ||
| High-chromium Cast Steel Ball | ZQCr12 | 2.0-3.0 | 0.3-1.2 | 0.2-1.0 | 11-13 | ≤0.10 | ≤0.10 | 0-1.0 | 0-1.0 | 0-1.5 |
| ZQCr15 | 2.0-3.0 | 0.3-1.2 | 0.2-1.0 | 14-17 | ≤0.10 | ≤0.10 | 0-1.0 | 0-1.0 | 0-1.5 | |
| ZQCr20 | 2.0-2.8 | 0.3-1.0 | 0.2-1.0 | 18-22 | ≤0.10 | ≤0.08 | 0-2.5 | 0-2.0 | 0-1.5 | |
| ZQCr26 | 2.0-2.8 | 0.3-1.0 | 0.2-1.0 | 22-28 | ≤0.10 | ≤0.08 | 0-2.5 | 0-2.0 | 0-1.5 | |
| Middle-chromium Cast Steel Ball | ZQCr7 | 2.0-3.2 | 0.3-1.5 | 0.2-1.0 | 6.0-10 | ≤0.10 | ≤0.08 | 0-1.0 | 0-0.8 | 0-1.5 |
| Low-chromium Cast Steel Ball | ZQCr2 | 2.0-3.6 | 0.3-1.5 | 0.2-1.0 | 1.0-3.0 | ≤0.10 | ≤0.08 | 0-1.0 | 0-0.8 | — |
Forged Steel Ball
| Size(mm) | Diameter Tolerance(mm) | Single Ball Weight(g) | (HRC) Hardness | Impact Toughness (J/cm2 ) |
| Φ20 | +2-1 | 32 | ＞60 | ≥12 |
| Φ25 | 64 | |||
| Φ30 | 110 | |||
| Φ40 | 263 | |||
| Φ50 | 513 | |||
| Φ60 | +3-2 | 888 | ||
| Φ70 | 1410 | |||
| Φ80 | 2104 | |||
| Φ90 | 2996 | |||
| Φ100 | 4110 | |||
| Φ110 | +4-2 | 5457 | ||
| Φ120 | 7102 | ＞58 | ||
| Φ130 | 9030 | |||
| Φ140 | +4-3 | 11278 | ＞55 | |
| Φ150 | 13871 |
Forged Steel Cylpebs
| Size(mm) | 20×30 | 25×35 | 30×40 | 35×45 | 40×50 | 45×55 | 50×60 | 55×65 | 60×70 |
| Dia. Tolerance(mm) | ±1 | ||||||||
| Length Tolerance(mm) | ±2 | ||||||||
| Grade | C(%) | Si(%) | Mn(%) | Cr(%) | Cu(%) | Mo(%) | P(%) | S(%) | Ni(%) |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.80 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 65Mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| Grade | Breakage Rate | Hardness(HRC) | Impact Value(J/cm²) | Drop Times | Metallographic Structure |
| 45# | <1% | ≥ 45 | ≥ 12 | ≥ 8000 | M+C |
| 60Mn | <1% | ≥ 55 | ≥ 12 | ≥ 12000 | M+C |
| 65Mn | <1% | ≥ 58 | ≥ 12 | ≥ 12000 | M+C |
Steel Grinding Rod
| Diameter(mm) | Length(mm) | Diameter Tolerance(mm) | Length Tolerance(mm) |
| Φ50-150 | 2000-6000 | -1.6-0.2 | -20-0 |
| Impact Value(J/cm²) | Hardness(HRC) | Breakage Rate | Drop Times | Straightness | |
| 5-7 | 45-55 | ＜ 1% | ≥ 30 | 2/1000 | |
| Grade | C(%) | Si(%) | Mn(%) | Cr(%) | Cu(%) | Mo(%) | P(%) | S(%) | Ni(%) |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.80 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 65Mn | 0.62-0.70 | 0.17-0.37 | 0.90-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 40Cr | 0.37-0.45 | 0.17-0.37 | 0.50-0.8 | 0.80-1.1 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 | 0-0.30 |
| 42CrMo | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.2 | 0-0.03 | 0.15-0.25 | 0-0.035 | 0-0.035 | 0-0.30 |
AGICO BALL MILL GRINDING MEDIA PRICE
AGICO ball mill grinding media enjoy ex-factory prices! Different grinding media have different quotations, and some of them enjoy special discounts. If you are interested in our quality grinding media, please feel free to contact us! We will respond within 24 hours!
WHY CHOOSE AGICO BALL MILL MEDIA
AGICO is a professional industrial ball mill manufacturer with more than 20 years of experience. In addition to the ball mill machine, we also offer various types of high-quality ball mill grinding media such as steel grinding balls, steel grinding rods, and steel grinding cylpebs.
High Quality
We have a unique quality inspection system, which can meet the detection needs of products in the pre-production, in-production, and post-production stages. It enables our equipment and accessories to meet GB, YB standards, and export SGS inspection requirements.
Advanced Processing Equipment
AGICO has advanced horizontal forging and rotary forging equipment and multi-automatic production lines to ensure high quality and high efficiency manufacturing. The whole production process and product performance indicators can be controlled intelligently.
One-stop Service
We can provide customers with a one-to-one online consulting service, product customization service, exclusive cost reduction scheme, intimate after-sales service, free remote installation service, etc. Meeting the needs of customers is our greatest pursuit.