limestone grinding mill is a kind of new high-tech milling machine. This mill is used for grinding coarse limestone, the finished product size can be adjusted discretionarily from 80-325 meshes and finished product size of some materials can reach up to 600 meshes. also widely use for like limestone, dolomite, quartz, calcium carbonate, feldspar, cement, clay, marble, calcite, clinker, barite, gypsum , Non-Metalic ore etc.
Limestone Grinding Mill | Raymond Mill for Limestone - High Efficiency for FGD & Building Materials
Limestone is a widely distributed sedimentary rock primarily composed of calcium carbonate (CaCO₃). After grinding, limestone powder is widely used in power plant desulfurization (FGD), building materials, plastics, paints, rubber, feed, glass, cement, and many other industries. With increasingly stringent environmental requirements, the demand for limestone powder for wet FGD in power plants continues to grow. At the same, the construction, plastics, and coatings industries also have strong demand for high-quality limestone powder.
Raymond mill is the ideal equipment for processing limestone 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 limestone. Using the centrifugal rolling + air classification principle, it can grind limestone 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.
The working principle of the Limestone Raymond Mill is based on centrifugal rolling and air classification. The whole process consists of the following steps:
1. Feeding
Limestone 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. Limestone 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 limestone characteristics and fineness requirements.
Grinding rollers and rings are made of high-wear-resistant alloy materials for long service life, suitable for limestone‘s medium abrasiveness.
| Model | KL500 | KL650 | KL780 | KL980 | KL1100 | KL1450 | KL1760 | KL1950 | KL2100 |
| Handling Ability (t/h) | 0.5-2 | 0.5-2.5 | 1-3 | 1.5-4 | 2-6 | 6-10 | 8-20 | 15-30 | 20-40 |
| Main Motor Power(kw) | 7.5 | 15 | 18.5 | 30 | 45 | 90 | 132 | 185 | 220 |
| Fan power(kw) | 5.5 | 11 | 15 | 22 | 37 | 90 | 132 | 185 | 220 |
| Analyst power(kw) | 1.1 | 1.1 | 2.2 | 2.2 | 5.5 | 7.5 | 22 | 37 | 45 |
| Rotate Speed(r/m) | 120 | 120 | 120 | 120 | 120 | 90 | 90 | 90 | 90 |
| Diameter of Grinding Ring(mm) | 500 | 650 | 780 | 980 | 1100 | 1450 | 1760 | 1950 | 2100 |
| Diameter of Grinding Roll(mm) | 150 | 180 | 260 | 300 | 320 | 400 | 450 | 570 | 630 |
| Maximum Feed(mm) | 15 | 15 | 15 | 20 | 25 | 30 | 30 | 40 | 40 |
| Finished Particle Size(mm/mesh) |
1.6 ------ 0.045mm （16-325 Mesh） |
1.6------0.023mm （16-600mesh） |
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| Weight(t) | 1.8 | 2.8 | 3.8 | 6.5 | 14.5 | 26 | 48 | 65 | 85 |
Optimized for Limestone Processing: Grinding pressure and airflow optimized for limestone‘s hardness, abrasiveness, and FGD fineness requirements, ensuring product reaches 250-325 mesh (power plant desulfurization standard).
Stable Fineness, High Activity: Limestone powder has concentrated particle size distribution and high specific surface area, resulting in high desulfurization reactivity and guaranteed efficiency.
Significantly Lower Operating Costs: Low power consumption (20-30 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 power plant and industrial 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.
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Request a Quote → Tell us your capacity requirement, target fineness, and raw material condition, and we will respond within 24 hours
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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