Royal Duyvis Wiener B.V.

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+31 756 126 126

Koog aan de Zaan (NL)

Duyvis Wiener Ball Mill

Why ball mill grinding is important for delicious chocolate

Learn about ball mill grinding and how it is used in the chocolate production industry. Discover the advantages and components of ball mills, and get to know more about the different types, materials, and processes involved.

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Ball mill grinding process

Ball mill grinding is a critical process in the chocolate production industry. It involves crushing and refining cocoa nibs into chocolate liquor, which is then used as a base for various chocolate products. Ball mills are the most commonly used equipment for this process, and they come in different sizes, types, and materials depending on the specific application and production requirements. In this blog post, we will delve deeper into the world of ball mill grinding, covering topics such as the components of ball mills, their advantages, the different types of ball mills, and the materials used in ball mill grinding.

As a leading manufacturer of cocoa and chocolate processing equipment, Royal Duyvis Wiener recognizes the importance of a ball grinder in the chocolate-making process. The grinding process should be precisely controlled to ensure the desired particle size, texture, and flavor of the final product. Once the grinding is complete, our equipment facilitates the next steps of tempering and molding to create the perfect chocolate treats.

What types of ball mills are used in chocolate production?

Ball mills are essential in chocolate manufacturing, playing a role in grinding cocoa beans to the desired consistency. Different types of ball mills are used, each with unique features and benefits, including:

  1. Ball Mill BCM2.5-BL – This is a compact ball mill suitable for laboratory and small-scale production. It is designed with a double drum, and it is equipped with a belt drive to ensure smooth operation. The ball mill can accommodate up to 1kg of milling media, and it can run at critical speeds ranging from 180 to 1800 min-1.
  2. Ball Grinding MillΦ1.5×3-Φ4.0×6 – This is a common ball mill design used in industrial applications. It is a horizontal ball mill that consists of a rotating cylinder with two chambers, each containing a grinding medium. The first chamber is filled with larger balls, while the second chamber is filled with smaller balls. This design allows for coarse grinding in the first chamber and finer grinding in the second chamber.
  3. Laboratory Ball Mills – These are small ball mills used for testing and research purposes. They are typically used in laboratories and universities to study materials and processes.

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What components do ball mills contain?

Ball mills are made up of several components that work together to facilitate the grinding process. The drum or cylinder is the container that holds the material to be ground. It is typically made of steel or other abrasion-resistant materials and can come in various sizes, from 12.5 inches to 24 by 36 inches. The grinding medium is the material used to grind the cocoa nibs. It can be metallic balls, ceramic balls, or flint pebbles, among others. The choice of grinding medium depends on the material being ground, the particle size required, and the desired surface finish. Furthermore, The ball charge refers to the number and size of the grinding balls in the drum. The optimal ball charge depends on the type and size of the grinding medium and the material being ground. At least, The motor is the component that drives the drum and the grinding medium. The motor’s power and speed should be chosen based on the drum’s size, the grinding medium’s weight, and the critical speed ratio.

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What materials are used in ball mill grinding?

The choice of material used in ball grinding depends on several factors, including the material being ground, the desired surface finish, and the required capacity. Some of the most commonly used materials include:

  • Steel: Steel balls are the most commonly used material for grinding media in ball mills. They are durable, wear-resistant, and come in assorted diameters.
  • Ceramic Balls: Ceramic balls are ideal for applications that require a high degree of purity and chemical resistance. They are suitable for grinding materials that are prone to agglomeration on balls.
  • Flint pebbles: These are natural stones that are used as a grinding medium in ball mills. They are ideal for grinding materials that require low contamination levels and a smooth surface finish.
  • Chrome steel: This material is used for grinding balls in high-energy ball mills. It is highly wear-resistant and can withstand high temperatures and corrosive environments.
  • Carbide Ball Nose End Mill: This is a type of ball mill that is used for milling alloys from powders. It is designed with a carbide ball nose and is suitable for applications that require a high degree of precision and accuracy.

Advantages of ball mills in chocolate production

The use of ball mills in chocolate production offers several advantages, including:

  • Consistency: Using these mills allow you to offer a more consistent product than other types of equipment, ensuring that the chocolate liquor is of uniform quality and texture.
  • Efficiency: Ball mills are designed to maximize efficiency by using the least amount of energy possible while still achieving the desired results.
  • Ease of separation: The mills allow for easy separation of the grinding medium from the material being ground, which simplifies the production process.
  • Additional impact: Ball mills provide additional impact during the grinding process, which can help break down the material more efficiently and improve the overall quality of the product.
  • Ease of operation: Ball mills are easy to operate and require minimal training and expertise to use.
  • Ability to grind coarse particles: Ball mills can grind coarser particle sizes than traditional milling machines, making them suitable for grinding brittle materials.


Ball mill grinding is a critical process in the chocolate production industry, and the choice of ball mill equipment and materials used can have a significant impact on the final product’s quality and texture. You should consider factors such as the material being ground, the particle size required, and the desired surface finish when selecting ball mill equipment and materials. The advantages of ball mills over traditional milling machines include consistent product quality, high efficiency, ability to grind coarse particles, and ease of continuous operation. By understanding the different types of ball mills, their advantages, and the factors affecting their efficiency, as a chocolate manufacturer you can optimize the production processes and achieve consistent and high-quality results.

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