Raymond mill is the ideal equipment for processing dolomite powder. It is suitable for non-flammable and non-explosive materials with Mohs hardness ≤7 and moisture ≤6%, particularly well-suited for medium-hardness materials like dolomite (Mohs 3.5-4). Using the centrifugal rolling + air classification principle, it can grind dolomite from a feed size of ≤30mm down to 80-400 mesh (up to 600 mesh for some applications), producing uniform fineness, concentrated particle size distribution, and no over-grinding.
Dolomite Raymond Mill | High Efficiency & Energy Saving, Adjustable Fineness-The Ideal Equipment for Dolomite Powder Processing
Dolomite is a common carbonate mineral with the chemical formula CaMg(CO₃)₂. After grinding, dolomite powder is widely used in glass, ceramics, building materials (putty/mortar), fertilizers (soil conditioner), rubber, plastics, paints, metallurgy (refractories/flux), water treatment, and many other industries. With the increasing emphasis on acidic soil improvement in modern agriculture and the continuous development of the building materials and glass industries, the demand for high-quality dolomite powder is steadily growing.
Raymond mill is the ideal equipment for processing dolomite powder. It is suitable for non-flammable and non-explosive materials with Mohs hardness ≤7 and moisture ≤6%, particularly well-suited for medium-hardness materials like dolomite (Mohs 3.5-4). Using the centrifugal rolling + air classification principle, it can grind dolomite from a feed size of ≤30mm down to 80-400 mesh (up to 600 mesh for some applications), producing uniform fineness, concentrated particle size distribution, and no over-grinding.
Compared with traditional ball mills, the Raymond mill offers significant advantages: compact structure, small footprint, low power consumption, high one-pass powder yield, uniform product fineness, and dust-free operation. Our Raymond mill features high-manganese alloy rollers/rings, wear-resistant shovels, high-efficiency fans, and pulse baghouse filters to ensure long-term stable operation while meeting strict environmental standards at home and abroad.
Dolomite powder of different fineness is widely used in the following industries:
| Application Industry | Typical Fineness | Value Proposition |
|---|---|---|
| Glass Industry | 100-200 mesh | Provides CaO and MgO, improves water resistance, reduces devitrification |
| Ceramics Industry | 200-325 mesh | As fluxing agent, lowers firing temperature, increases green strength |
| Building Materials (Putty/Mortar) | 200-325 mesh | Improves workability and bond strength, crack resistance |
| Fertilizer/Soil Conditioner | 80-200 mesh | Neutralizes acidic soil, provides calcium and magnesium, promotes crop growth |
| Rubber/Plastics Industry | 400-800 mesh | As functional filler, improves rigidity and heat resistance |
| Paints & Coatings | 600-1250 mesh | Enhances opacity, improves leveling and weather resistance |
| Metallurgy (Refractories/Flux) | 80-200 mesh | Used for magnesia-calcia bricks, magnesite-chrome bricks, or as steelmaking flux |
| Water Treatment | 100-200 mesh | As neutralizing agent to adjust pH, remove heavy metals |
The working principle of the Dolomite Raymond Mill is based on centrifugal rolling and air classification. The whole process consists of the following steps:
1. Feeding
Dolomite raw material is crushed by a jaw crusher to ≤30mm, then lifted by a bucket elevator into a raw material silo, and uniformly fed into the Raymond mill grinding chamber by an electromagnetic vibrating feeder.
2. Grinding
When the main unit is working, the grinding rollers tightly press against the grinding ring under centrifugal force. The material is scooped up by a shovel blade and thrown between the rollers and the ring, where it is crushed and ground. Dolomite is pulverized into fine powder between the rollers and the ring.
3. Classification
The ground powder rises with the airflow from the fan to the classifier. The classifier controls the final fineness by adjusting the speed of the classifying rotor. Powder that meets the fineness requirement passes through the classifier to the cyclone collector or dust collector; coarse powder is rejected and falls back into the grinding chamber for regrinding, forming a closed circuit.
4. Collection & Dust Removal
After preliminary collection by the cyclone collector, the dust-laden gas enters a pulse baghouse filter for further purification, achieving final dust emission below 20mg/Nm³. The collected finished powder is discharged through a discharge valve and conveyed by a screw conveyor to the finished product silo or packaging machine.
5. System Features
The entire system operates under negative pressure, preventing dust leakage.
An air volume control valve between the fan and the main unit allows adjustment based on dolomite characteristics and fineness requirements.
Grinding rollers and rings are made of high-wear-resistant alloy materials, suitable for dolomite‘s medium abrasiveness.
| Model | Roller Qty | Max Feed (mm) | Output (t/h) | Product Fineness | Main Motor Power (kW) |
|---|---|---|---|---|---|
| 3R1410 | 3 | ≤15 | 0.5-1.4 | 80-400 mesh | 11 |
| 3R2115 | 3 | ≤20 | 0.8-2.2 | 80-400 mesh | 22 |
| 3R2615 | 3 | ≤20 | 1.2-2.8 | 80-400 mesh | 30 |
| 3R2715 | 3 | ≤20 | 1.5-3.2 | 80-400 mesh | 37 |
| 4R3216 | 4 | ≤25 | 2.0-4.5 | 80-400 mesh | 55 |
| 4R3220 | 4 | ≤25 | 2.5-6.0 | 80-400 mesh | 75 |
| 5R4119 | 5 | ≤30 | 3.5-9.0 | 80-400 mesh | 110 |
| 5R4121 | 5 | ≤30 | 5.0-13.0 | 80-400 mesh | 132 |
| 6R5525 | 6 | ≤35 | 8.0-18.0 | 80-400 mesh | 200 |
Note: Output data based on typical dolomite with Mohs hardness ≤4 and moisture ≤2%. Actual output varies with material properties and target fineness.
Optimized for Dolomite Processing: Grinding pressure and airflow optimized for dolomite‘s medium hardness, abrasiveness, and whiteness requirements, ensuring uniform fineness and high whiteness.
Stable Fineness, High Activity: Dolomite powder has concentrated particle size distribution and high specific surface area, ensuring stable performance in glass, ceramics, building materials, and other industries.
Significantly Lower Operating Costs: Low power consumption (20-28 kWh/ton), long life of wear parts, high automation, and low labor costs.
Environmental Compliance, Green Production: Fully enclosed negative pressure system + high-efficiency dust collection—no dust leakage, meets domestic and international environmental standards.
Global Service Experience: Our KLV Raymond mills have been exported to over 50 countries and regions in the Middle East, Southeast Asia, Africa, and South America, providing overseas installation, commissioning, and operation training.
EPC Turnkey Service: From raw material analysis to finished product packaging, we provide one-stop solutions for customer convenience.
Improve your dolomite powder processing efficiency, reduce production costs, and meet the requirements of glass, ceramics, building materials, fertilizer, and other industries! Contact us today for professional selection advice and a customized solution.
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Kolev Equipment Technology Co., Ltd. is a large-scale private technology enterprise specializing in the research, development, production, and sales of mining and metal ore processing equipment. With over 20 years of experience in ultra-fine grinding, industrial drying, and crushing sand making industries, we provide intelligent solutions and mature supporting products worldwide.
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