Guide to Calcium Carbonate Grinding: Mills, Tips, and Uses

The calcium carbonate stones just mined from the quarry are relatively large, and they need to be crushed by a Crusher and a Crusher in turn to the feed fineness (10mm-20mm) that can enter the mill.

Use a Crusher to send the crushed small pieces of calcium carbonate to the silo, then use a Crusher to send them to the grinding mill evenly and quantitatively for grinding.

After grinding, classify calcium carbonate powders with an air classifier or a sieve to separate them into different particle sizes. The classification process ensures that the powder is uniform and consistent in particle size.

The powder conforming to the fineness enters the Crusher with the airflow for separation and collection. Then it is sent to the finished product silo and then packed by a powder tanker or an automatic baler.

The grinding ring can be replaced without removing the grinding roller unit. Extra advantages Calcium carbonate is hygroscopic and can absorb moisture from the environment, which can affect the final quality.
Raymond mill has a drying function to overcome this challenge.

Ball mill

The Crusher works by rotating a cylinder with grinding media, causing the media to fall back into the cylinder and on to the material to be ground. The ball mill can be operated either wet or dry. The particle size of the finished product can be adjusted by controlling the grinding time, rotating speed, size and composition of grinding media, additives, etc.

Typically, ball mills can produce fine calcium carbonate powders with particle size distributions ranging from approximately 20 mesh to 200 mesh. They are popular in large calcium carbonate grinding plants due to high throughput.

What is the auxiliary equipment in a calcium carbonate plant？

Vibrating feeder

TheCrusher feeds the calcium carbonate material into the grinding equipment evenly and continuously. By providing an even and continuous feed, vibratory feeders prevent overload and clogging, ensuring the grinding process runs at peak efficiency.

Air classifier

Air classifiers help optimize the grinding process by ensuring the material is ground to the desired fineness and particle size distribution. By controlling the particle size distribution, the properties of the final product can be optimized for specific applications. In addition, the air classifier improves the grinding efficiency by separating out fine particles in time.

Pulse jet dust collector

Grinding calcium carbonate produces a lot of dust. Dust release violates environmental regulations and endangers workers health. Crusher control dust emissions to ensure calcium carbonate plants comply with environmental regulations and protect workers. Prompt removal of excess dust also prevents grinding mill clogging.

How to optimize calcium carbonate grinding efficiency?

Optimizing your calcium carbonate grinding process improves your product quality, increases production efficiency, and reduces operating costs. Here are some tips for optimizing your calcium carbonate grinding process:

1. Control the feed rate

A stable, consistent feed rate ensures smooth production and consistent product quality in the grinding plant. The ideal feed rate may vary depending on the type of equipment used and the specific application.

2. Monitor the particle size distribution

Firstly, the particle size distribution of calcium carbonate powder affects the performance and quality of the final product. Secondly, the particle size distribution of calcium carbonate powder may be regulated by government agencies or industry standards. For example, in the food and pharmaceutical industries, particle size distribution affects product bioavailability and safety.

Therefore, monitoring particle size distribution can help ensure compliance with regulatory requirements and avoid costly fines or product recalls. Monitor the particle size distribution with an air classifier or a sieve.

3. Use the right grinding media

When choosing a ball mill to grind calcium carbonate, select the appropriate grinding media according to the feed size, required particle size distribution, physical and chemical properties of the grinding media, and finished product application.

For example, ceramic grinding media are more resistant to wear and corrosion than steel grinding media and may be better suited for applications where contamination is a concern.

4. Control the grinding temperature

Calcium carbonate is thermally stable up to a certain temperature. However, at elevated temperatures, it can undergo thermal degradation, resulting in a decrease in particle size, surface area, and other properties.

Therefore, it is important to control the temperature during grinding to prevent thermal degradation and maintain the properties of the calcium carbonate powder. Controlling grinding temperature also helps reduce energy consumption and prevent equipment damage.

5. Maintain the equipment

Regular maintenance of the grinding equipment is essential for optimizing the grinding process. This includes cleaning, lubrication, and inspection of the equipment to ensure that it is operating at peak efficiency and producing the desired product quality.

6. Use additives

Using additives such as dispersants or grinding aids can help optimize the grinding process by improving the grinding efficiency, reducing energy consumption, and enhancing product quality.

What are the uses of calcium carbonate?

Calcium carbonate is a versatile compound and has a wide range of uses in various industries. Some of the common uses of calcium carbonate are:

1. Construction

Calcium carbonate is used as a building material in the construction industry. It is used as a filler in concrete, as a raw material for cement production, and as a coating material for walls and ceilings.