The company's main products are HGM series micro pulverizer, superfine micro pulverizer, micro pulverizer, superfine pulverizer, pulverizer and matching hammer crusher, etc.

Calcium Carbonate and Coal Powder Production Line In China

Material: Limestone, calcite, coal

Fineness: 600 mesh

Capacity: 5-9 t/h

Purpose: Expanding agent

Project Profile:

Project Name: Calcium Carbonate & Coal Powder Production Line in China
Equipment: HGM125 micro powder grinding mill
Raw Materials: coal, limestone, calcite
Output Size: 600 mesh
Capacity: 5-9 t/h
Application: Expanding agent

Calcium Carbonate And Coal Powder Production Line Project Introduction:

Calcium Carbonate & Coal Powder Production Line

In a bid to enhance their production capabilities and expand their product offerings, this customer has invested in 3 sets of HGM125 micro powder grinding mills. These mills are specifically used to produce ultra-fine calcium carbonate and coal powder, achieving a fineness of 600 mesh. The final product, which expands upon mixing with water, is utilized as an expansion agent in various industrial applications.

Equipment: HGM125 Micro Powder Grinding Mill

The HGM125 micro powder grinding mill is a state-of-the-art industrial grinding machine that plays a pivotal role in the production line for calcium carbonate and coal powder. This machine is engineered to grind raw materials into extremely fine powders, ensuring high quality and efficiency in production.

Raw Materials: Coal, Limestone, and Calcite

  • Coal: 
  • Coal is a vital raw material in various industries. It is primarily used as a fuel source for energy production but also finds applications in steel production, cement manufacturing, and as a chemical feedstock. In the context of this production line, coal is finely ground to enhance its reactivity and improve its utility in different processes.
  • Limestone:
  • Limestone is a sedimentary rock composed mainly of calcium carbonate (CaCO3). It is widely used in construction, agriculture, and as a raw material for producing lime and cement. In this production line, limestone is ground to a fine powder, making it suitable for use as a filler material in various products, including paints, plastics, and rubber.
  • Calcite: 
  • Calcite, another form of calcium carbonate, is a widely distributed mineral found in sedimentary, metamorphic, and igneous rocks. It is used in the manufacture of cement, as a soil treatment, and as a filler in various products. The grinding process in this production line ensures that calcite is reduced to a fine powder, enhancing its effectiveness in these applications.

Output Size: 600 Mesh

The HGM125 micro powder grinding mill is capable of producing powders with an output size of 600 mesh. The mesh size indicates the fineness of the powder, with a higher mesh number signifying a finer powder. A 600 mesh powder is extremely fine, with particle sizes typically less than 25 microns. This fine particle size is crucial for applications requiring high reactivity and smooth surface finishes.

Capacity: 5-9 t/h

The grinding mill has a production capacity ranging from 5 to 9 tons per hour. This capacity makes it suitable for both small-scale and large-scale production operations. The ability to process such volumes efficiently ensures that the production line can meet the demands of various industrial applications without compromising on quality or productivity.

Final Product: Expanding Agent

The finely ground calcium carbonate and coal powder serve as an expanding agent when mixed with water. This property makes the product valuable in various industrial applications, where expansion and volume increase are required.


  • Construction Industry: The expanding agent is used in lightweight concrete and mortar production. The fine powders ensure a uniform mix, enhancing the structural integrity and insulation properties of the final product.
  • Plastics and Polymers: In the plastics industry, the expanding agent helps create lightweight and durable materials, improving product quality and reducing production costs.
  • Rubber and Elastomers: The agent is used to produce flexible and lightweight rubber products, contributing to better performance and longevity.
  • Agriculture: In agriculture, the expanding agent can be used to improve soil structure and aeration, promoting healthier plant growth.

Benefits to the Customer

The investment in three HGM125 micro powder grinding mills has provided the customer with several significant advantages:

  1. Increased Production Capacity: With three mills operating simultaneously, the customer can produce large quantities of fine powder efficiently, meeting the demands of their clients.
  2. Consistent Product Quality: The advanced technology of the HGM125 ensures that the powders produced have a uniform particle size, essential for high-quality final products.
  3. Cost Efficiency: The high efficiency and low maintenance requirements of the mills result in reduced operational costs.
  4. Versatility: The ability to produce both calcium carbonate and coal powder expands the customer’s product offerings and market reach.
  5. Environmental Compliance: The integrated dust collection systems ensure compliance with environmental regulations, contributing to a safer and cleaner working environment.

Detailed Description of the HGM125 Micro Powder Grinding Mill

The HGM125 micro powder grinding mill is designed with several features that enhance its performance and efficiency:

  • High Efficiency: The mill is equipped with advanced grinding technology that ensures high efficiency and low energy consumption. The finely ground powders produced by the mill have a uniform particle size distribution, which is essential for high-quality products.
  • Durable Components: The grinding mill is constructed with high-quality materials that ensure durability and long service life. Key components, such as the grinding rollers and rings, are made from wear-resistant materials, reducing maintenance costs and downtime.
  • Precision Control: The HGM125 mill offers precise control over the grinding process. Operators can adjust parameters such as feed rate, grinding pressure, and classifier speed to achieve the desired particle size and product quality.
  • Environmental Considerations: The grinding mill is designed with environmental considerations in mind. It is equipped with dust collection systems that minimize dust emissions, ensuring a clean and safe working environment. Additionally, the mill’s low energy consumption contributes to a reduced environmental footprint.

Operational Workflow

The production line operates through a series of stages that ensure the efficient and consistent grinding of raw materials:

  • Material Feeding: Raw materials such as coal, limestone, and calcite are fed into the grinding mill through a controlled feeding system. This ensures a steady and uniform flow of materials into the mill.
  • Grinding: The raw materials are subjected to intense grinding within the mill. The grinding rollers and rings exert high pressure on the materials, reducing them to fine powders. The mill’s advanced technology ensures that the grinding process is efficient and produces powders with a uniform particle size.
  • Classification: After grinding, the fine powders are classified based on their particle size. The classifier within the mill separates the fine powders from coarser particles, ensuring that only powders of the desired fineness are collected.
  • Collection: The finely ground powders are collected and conveyed to storage or packaging systems. Dust collection systems ensure that any airborne particles are captured, maintaining a clean production environment.

Applications in Various Industries

The fine powders produced by the HGM125 micro powder grinding mill are used in a wide range of industries:

  • Construction: In the construction industry, finely ground limestone and calcite are used as fillers in concrete and mortar, enhancing their strength and durability.
  • Plastics and Polymers: Fine powders are used as fillers in plastics and polymers, improving their properties and reducing production costs.
  • Paints and Coatings: In the paint industry, finely ground calcium carbonate is used as a filler to improve the texture and durability of paints and coatings.
  • Agriculture: In agriculture, finely ground limestone is used as a soil amendment to neutralize acidic soils and provide essential nutrients to crops.

The HGM125 micro powder grinding mill is an essential piece of equipment in the calcium carbonate and coal powder production line. Its ability to produce fine powders with a consistent particle size makes it invaluable in various industrial applications. The high efficiency, durability, and precision control of the mill ensure that it can meet the demands of different production environments, providing high-quality products that contribute to the success of various industries.

Share this article

key case

Send us an Inquiry

If you have some questions about our products, please feel free to fill out the form below, and we will contact you within 24 hours.