Ground Calcium Carbonate Production Process – HGM Grinding Mill

HGM Ultrafine Grinding Mill, developed by CLIRIK, is specifically designed for processing calcium carbonate limestone into ultrafine powder. It is ideal for producing GCC in fineness ranges from 325 mesh (45 μm) up to 3000 mesh (5 μm).

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Production Process Flow (HGM System)

1. Raw Material Preparation

• Material: High-purity limestone (CaCO₃ ≥ 98%)
• Moisture Content: ≤ 5%
• Equipment Used:

2. Fine Grinding with HGM Mill

>> HGM Ultrafine Grinding Mill Structure

Grinding Rollers: 3–5 layers
Grinding Ring: Multilevel concentric design
Classifying System: Built-in high-precision turbine classifier
Dust Control: Pulse dust collector + cyclone collector

>> Key Technical Specs

Parameter	Value
Fineness	325–3000 mesh (D97 = 45–5 μm)
Capacity	0.5–45 tons per hour
Input Material Size	≤ 20 mm
Output Powder Size	D97 adjustable
Drive System	PLC automatic control (optional)

>> Grinding Principle

• Material falls into the grinding chamber.
• Rollers rotate at high speed and compress against the ring.
• Powder is lifted by airflow and classified by the built-in classifier.
• Fine powder is collected by dust collectors; coarse powder returns for regrinding.

 

3. Powder Collection

Machines: Pulse Dust Collector + Cyclone Collector
Efficiency: ≥ 99% collection rate
Output: Fine dry GCC powder ready for use
 

4. (Optional) Surface Modification

Machine: CLG Powder Coating Machine
Function: Surface-treat GCC with stearic acid
Application: Plastics, rubber, masterbatch, cable insulation
 

5. Packaging

Machine: Automatic Packing Machine
Options: 25kg bags, valve bags, or jumbo bags (1 ton)
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Advantages of Using HGM for GCC

Feature	Benefit
Wide fineness range	Suitable for many industries (paper, paint, plastic, etc.)
Low operating cost	Energy-efficient design, less wear parts
Continuous operation	Stable 24/7 grinding performance
Modular design	Easy to scale from lab to industrial size
Dust-free environment	Equipped with high-efficiency pulse dust collector
Customizable layout	Flexible configuration to match customer requirements

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Applications of HGM-Ground GCC by Mesh Size

Mesh	Micron (D97)	Industry Use
325	45 μm	Paper filling, construction putty
600	25 μm	PVC pipes, cable insulation
800	20 μm	Paints, rubber, wall coatings
1250	10 μm	Plastics, sealants, adhesives
2500	5 μm	Masterbatch, high-end coatings, inks
3000	3–4 μm	Inks, cosmetics, high-transparency plastic

 

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CLIRIK HGM Grinding Mill Supports:

• Complete GCC plant solutions from 1 T/H to 45 T/H
• Turnkey installation + training
• Compliance with ISO, CE, and environmental standards