HGM Ultrafine Grinding Mill for Limestone in Cement Industry

The HGM Ultrafine Grinding Mill, developed by Shanghai CLIRIK Machinery, is a high-efficiency, energy-saving equipment designed for producing fine and ultrafine limestone powder.

In the cement industry, it is mainly used to grind limestone as a raw material or as a mineral additive, improving cement quality and production efficiency.
 

It is especially suitable for preparing:

• Fine limestone powder (for blending in cement)
• Limestone fillers for high-performance cement
• Ultrafine CaCO₃ powder used in environmental and construction applications
   

Working Principle

The HGM ultrafine grinding mill uses a multi-ring, multi-roller structure that relies on rolling, grinding, and impact forces.


 

Process flow:

1. Crushed limestone (<20 mm) is fed into the main mill.
2. The main shaft drives multiple grinding rollers to rotate around the grinding ring.
3. The material is repeatedly ground between rollers and rings.
4. The built-in classifier separates coarse and fine particles.
5. Qualified fine powder (as fine as D97 = 3–45 μm) is collected by the pulse dust collector.

This closed-circuit design ensures stable fineness, low energy consumption, and zero dust emission.

 

Technical Specifications (Typical Model: HGM125L)

Parameter	Specification
Feed Size	≤20 mm
Output Size	D97 = 3–45 μm (325–3000 mesh)
Capacity	3–15 tons/hour (depending on fineness)
Main Motor Power	185–315 kW
Number of Grinding Rings/Rollers	4–5 rings, 36–44 rollers
Control System	PLC + inverter automatic control
Dust Collection	Pulse dust collector (99.9% efficiency)
Cooling System	Air cooling, no water required

 

Key Advantages in Cement Industry

Advantage	Description
High Fineness & Consistency	Produces fine limestone powder (D97 up to 3 μm) for cement blending and filler use.
Energy Efficiency	30–40% lower energy consumption than ball mills.
Environmentally Friendly	Pulse dust collector and muffler ensure clean, quiet operation.
Compact Design	Integrated crushing, grinding, and classification system reduces plant footprint.
Automation & Reliability	PLC-controlled system ensures stable operation with minimal manual intervention.
Low Wear Rate	Special alloy wear parts extend lifespan, reducing maintenance costs.

 

Application in Cement Industry

(1) Raw Material Grinding

Used to grind limestone into fine powder for raw meal preparation.

Improves chemical uniformity of the feed to the rotary kiln.

Ensures better calcination efficiency and higher clinker quality.

(2) Additive Grinding

Produces fine limestone powder used as a cement additive (5–20%).

Enhances cement strength, rheology, and packing density.

Reduces CO₂ emissions by partially replacing clinker.

(3) Cement Filler Production

Produces ultrafine CaCO₃ powder (D97=5–10 μm) as filler for high-performance cement, mortar, and self-leveling compounds.

Increases smoothness, durability, and density of cement-based materials.
 

Typical Production Line Configuration

Process Stage	Equipment
Crushing	Jaw Crusher / Hammer Crusher
Grinding	HGM Ultrafine Grinding Mill
Classification	Integrated Turbine Classifier
Collection	Pulse Dust Collector + Fan
Packaging	Automatic Valve Bag Packing Machine

 

Optional Add-ons:

• Screw feeder for precise feeding
• PLC control cabinet for full automation
• Dust-free loading system
   

Example Project

Project Location: Gujarat, India

Material: Limestone

Mill Model: HGM125L + Pulse Dust Collector

Output Size: D97 = 10 μm

Capacity: 3–4 tons/hour

Application: Fine limestone powder for cement additive and coating filler.

Result: Stable operation, uniform fineness, reduced energy cost by 35% compared with traditional ball mill.


 

Economic and Environmental Benefits

• Reduced clinker factor → lowers CO₂ emissions
• Higher strength performance due to fine limestone addition
• Lower electricity cost per ton of powder
• Minimal dust discharge → meets EU environmental standards
• Long service life → low maintenance downtime

 

The HGM Ultrafine Grinding Mill is an ideal solution for modern cement plants seeking to:

• Improve energy efficiency
• Produce high-quality fine limestone powder
• Lower carbon emissions
• Enhance cement product performance

With its advanced design, precision control, and environmentally friendly system, the HGM Ultrafine Mill helps cement manufacturers achieve sustainable, high-efficiency production.