How To Choose A Suitable Calcium Carbonate Grinding Mill?

In terms of production process, calcium carbonate powder is mainly obtained by grinding limestone, marble, calcite and other raw materials. The calcium carbonate production line is mainly composed of crushers, screw conveyors, storage bins, grinding mill, dust collectors, classifiers and other equipment. The grinding mill is the core of the entire production line.

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The choice of grinding mill machine is related to the quality of the final ground calcium carbonate powder, so how to choose the right calcium carbonate grinding equipment has also become a concern for many customers. This article will provide you with some suggestions.

Production method of calcium carbonate powder

Before choosing a grinding mill, you need to understand how calcium carbonate is produced. At present, there are two main methods, dry grinding method and wet grinding method.

The dry grinding method is mainly used in primary grinding, and is suitable for the production of powders that do not require high particle size distribution.

The wet method uses coarsely crushed products as raw materials, and then adds solvents and related additives for regrinding. At the same time, by removing impurities in the ore, the fineness and purity of the finished product will be improved.

Generally speaking, the finished product size below mesh is generally produced by dry grinding process.

For product size from to mesh can be produced by dry gridning process or wet gridning process.

For products from to mesh, wet grinding process is usually appropriate for production.

Factors to consider when choosing the calcium carbonate gridning mill

Raw materials

Different raw materials have different hardness. The hardness of the material suitable for different grinding mills is also different. Our common calcium carbonate grinding mills include ball mill, micro powder roller mill, Raymond roller mill, vertical mill, wet grinding mill and so on.

Raymond roller mill and micro powder roller mill are generally suitable for materials with medium and low hardness. Ball mills, vertical mills and wet grinding mills are generally suitable for materials of various hardness. Only by choosing the right grinding mill can its production efficiency be maximized.

Feeding and discharging size

Before choosing a grinding mill, you need to know the size of your material and the size of the finished product you need, so that you can choose a suitable mill.

Its capacity

You need to know roughly how much powder you need per day or year. Knowing this factor is to consider the configuration of the machine. If a single machine cannot meet your production needs, you need to consider using two or more mills.

Taking the wet grinding mill as an example, two parallel wet grinding mills can greatly increase the output per unit time of the production line; while two series wet grinding mills can improve the fineness of the finished product.

The shape and quality of the finished product

For some non-metallic minerals, such as graphite, talc, kaolin, wollastonite, etc., maintaining the particle shape of flakes or needles helps to improve their application performance and use value. For some downstream industries, it is better for the finished product to be spherical or close to spherical.

Therefore, the particle shape is also taken into consideration when selecting the grinding mill equipment for these minerals. Generally, the shape and quality of the finished ball mill will be better.

Energy consumption of equipment

Energy consumption is also an important factor to consider when selecting the calcium carbonate grinding mill, as it is an important component of equipment cost.

For common grinding equipment, the energy consumption of ball mill and wet grinding mill is relatively large; the energy consumption of Raymond mill, micro powder roller mill and vertical mill is relatively small.

Applications

Different industries have different requirements in the process of using ground calcium carbonate powder. Take the following industries as examples:

• The rubber industry requires 400 mesh, which is mainly used for filling materials, reducing costs, and enhancing its strength and wear resistance;
• The plastic industry requires 400 mesh, which is mainly used to enhance its stability and enhance the smoothness of the surface.
• The paint industry requires 800 mesh, and the main function is to ensure that the filling amount is more than 30%;
• The paper industry requires 325 mesh, and the main function is to ensure the strength and whiteness of the paper, and the cost is low;
• The construction industry requires 325 mesh, and the main function is to increase the toughness and strength of the product.

Input costs

The initial investment cost and the late return on investment are one of the issues that customers are very concerned about before purchasing equipment. According to the above factors, first select the equipment suitable for your project, and then consider their prices and compare the prices of different manufacturers.

If you need to grind fine powder, but your budget is not too high, then you can consider choosing a micro powder roller mill. Similarly, if you need to grind fine powder, and you have sufficient budget and high quality requirements for the finished powder, then you can consider choosing a ball mill.

Characteristics of different grinding mills

Ball mill

Ball mills are often combined with classifiers to form a complete production line, mainly producing D97, 5 to 45μm ground calcium carbonate fine powder and ultrafine powder. Different models of ball mill host, its output is also different. Generally speaking, the annual output of the ball mill is between 10,000 tons and 200,000 tons.

Due to its advanced technology, good quality of finished products and stable operation, it has been well received by middle and high-end customers.

Micro powder roller mill

As the name suggests, the micro powder roller mill mainly crushes the material by rolling and grinding the multi-layer ring rollers. It is mainly used to produce ultrafine powder of 8-45μm.

Our common micro powder roller mill models have 21 rollers, 28 rollers and 34 rollers. The greater the number of grinding rollers, the greater its output.

Raymond roller mill

Raymond roller mills are mainly used to grind coarse powders. Its feed size is generally 25 to 30 mm, and the output size is 45 to 180 microns. Its passing rate is 99%, which is difficult for other grinding mill equipment. Moreover, it also has the characteristics of small footprint, convenient maintenance and low energy consumption.

Its output is generally 1 to 30 tons per hour (different finished product fineness will lead to different output). Raymond mill is widely used and welcomed by users all over the world.

For more Powder Grinding Machine Manufacturerinformation, please contact us. We will provide professional answers.

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Vertical mill

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Vertical mill is a large-scale grinding equipment, which is widely used in cement, electric power, metallurgy, chemical and other industries. It is often used to produce powders as fine as 10 microns. The vertical mill has a large output and a small footprint.

Compared with the ball mill, although the powder produced by the vertical mill is not as good as the powder produced by the ball mill, the power consumption of the vertical mill is about 30% to 50% less than that of the ball mill. Therefore, the vertical mill is an ideal choice for customers who pursue low power consumption.

Wet grinding mill

Wet grinding mill, also known as ultra-fine stirring mill, is widely used in the fine processing of heavy calcium carbonate, light calcium carbonate, barite, gypsum, talc and other non-metallic minerals.

Its production process is relatively flexible, and it can be produced by a single unit or multiple units, and the material can be ground to to mesh or even finer. It has the characteristics of large output, high efficiency, low energy consumption and environmental protection.

Unit conversion table

When it comes to grinding related processes and equipment, it is indispensable to deal with the particle size of the material, and the fineness of the material in the mining industry is usually expressed by mesh. The number of meshes refers to the number of holes on the screen per inch, and 50 mesh means that the number of holes per inch is 50. The larger the mesh number, the finer the material particle size; the smaller the mesh number, the larger the material particle size.

Many customers may not know what is the relationship between our common mesh, micrometer and millimeter. The following conversion table is for your reference:

If you have any questions about choosing a calcium carbonate grinding mill, please feel free to communicate with us!

Welcome to the ultimate guide on powder making equipment! Whether you’re an industry professional or a curious enthusiast, this guide is tailored to give you a comprehensive understanding of the various powder making equipment available, their applications, and much more. Let’s dive in and explore the fascinating world of powder manufacturing.

Overview of Powder Making Equipment

Powder making equipment is essential in various industries, including pharmaceuticals, metallurgy, food processing, and more. These machines transform raw materials into fine powders, which can then be used in a multitude of applications. In this guide, we’ll cover specific models, their properties, applications, and how to choose the right equipment for your needs.

Types of Powder Making Equipment

1. Ball Mills

Ball mills use grinding media (typically steel or ceramic balls) to crush materials into fine powders. They are commonly used in mining, pharmaceuticals, and cement industries.

2. Jet Mills

Jet mills use high-speed jets of compressed air or steam to grind particles. Ideal for producing fine powders, they are used in pharmaceuticals, chemicals, and cosmetics.

3. Hammer Mills

Hammer mills crush materials using high-speed rotating hammers. They’re often used in the agricultural sector to grind grains into flour or in recycling to break down scrap materials.

4. Attrition Mills

Attrition mills use a combination of shear and impact forces to grind materials. They are widely used in the paint and ink industries.

5. Vibration Mills

Vibration mills use oscillatory motion to grind materials. They are suitable for producing extremely fine powders and are used in electronics and advanced ceramics.

6. Planetary Ball Mills

Planetary ball mills have multiple grinding jars rotating on a sun wheel. They are used for mechanical alloying and synthesizing new materials in research laboratories.

7. Disc Mills

Disc mills use friction to grind materials between two discs. They are commonly used in the food industry to produce cocoa powder or flour.

8. Roller Mills

Roller mills use cylindrical rollers to crush materials. They are prevalent in the agriculture sector for milling grains and seeds.

9. Pin Mills

Pin mills use two discs with interlocking pins to grind materials. They are suitable for producing fine powders in the food and pharmaceutical industries.

10. Fluidized Bed Opposed Jet Mills

These mills use a fluidized bed of particles and opposed jets to grind materials. They are used for ultrafine grinding in the chemical and mineral industries.

Table of Powder Making Equipment Types and Characteristics

Applications of Powder Making Equipment

Powder making equipment finds its applications in a wide range of industries, from food processing to advanced materials research. Let’s explore some of these applications in detail.

Specifications, Sizes, Grades, and Standards

When choosing powder making equipment, it’s crucial to consider specifications such as size, capacity, and the material it can process. Here’s a table with some general specifications.

Suppliers and Pricing Details

Knowing where to source your equipment and understanding the cost implications is crucial. Here’s a look at some suppliers and their pricing.

Pros and Cons of Different Powder Making Equipment

When comparing different types of powder making equipment, it’s essential to weigh their advantages and limitations. Here’s a detailed comparison.

Choosing the Right Powder Making Equipment

Selecting the right equipment depends on various factors, including the material you’re processing, the desired particle size, and your budget. Consider the following tips:

1. Understand Your Material: Different materials require different grinding mechanisms. Metals may need ball mills, while pharmaceuticals may require jet mills.
2. Desired Particle Size: For ultrafine powders, consider jet mills or vibration mills. For coarser materials, hammer or roller mills might be more appropriate.
3. Capacity Requirements: Determine your production needs. High-capacity operations might benefit from hammer or roller mills, while research labs might prefer planetary ball mills.
4. Budget Constraints: Balance the cost of equipment with your operational needs. While some mills are expensive, their efficiency and precision might justify the investment.
5. Maintenance and Operation: Consider the ease of maintenance and operation. Some equipment may have higher operational costs but lower maintenance needs and vice versa.

FAQs

Conclusion

Powder making equipment is a vital component in many industries, enabling the transformation of raw materials into fine powders for various applications. Understanding the different types of equipment, their applications, specifications, and maintenance requirements will help you make an informed decision for your needs. Whether you’re in pharmaceuticals, food processing, or any other industry requiring fine powders, this guide provides the essential information to get you started.

We hope this comprehensive guide has been helpful. If you have any further questions or need specific recommendations, don’t hesitate to reach out to industry experts or suppliers. Happy milling!

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