Medium Hardness Material Disc Pulverizer for Coal Ore Sample Preparation

Product Overview

This disc pulverizer is a specialized laboratory mill designed to efficiently crush medium-hard materials such as coal, coke, ores, and minerals. Its core value lies in delivering consistent and reproducible particle size reduction, which is critical for accurate chemical and physical analysis. The system is engineered for heavy-duty use, ensuring reliable operation even under continuous workloads.

Primary use cases span metallurgy, geology, building materials, and chemical industries. Laboratories use this equipment to prepare samples for proximate analysis, elemental assay, or quality control testing. With a throughput of 80 kg per hour and an adjustable final particle size of 0.2–1 mm, it handles everything from coarse crushing to fine grinding, adapting to diverse sample requirements.

With a rugged cast iron body and high manganese steel discs, this unit handles abrasive materials and long service life. Its simple design ensures low maintenance and easy cleaning. Quiet operation adds to its appeal in busy labs.

Key Features

• High Manganese Steel Grinding Discs: Both the stationary and rotating discs are fabricated from high manganese steel, renowned for its exceptional wear resistance and toughness. This material choice significantly extends the service life of the grinding components, even when processing abrasive samples like quartz or iron ore. The discs maintain their grinding efficiency over thousands of cycles, ensuring consistent particle size output.

• Precise Gap Adjustment System: A dual-handwheel mechanism provides both coarse and fine control over the grinding disc clearance. The coarse handwheel disengages the adjuster for quick setting changes, while the fine handwheel allows micrometer-level adjustments to reach the exact target particle size from 0.2 to 1 mm. This precision enables users to tailor the grind to match specific analytical methods, such as 0.2 mm for coal analysis or coarser for other materials.

• High Throughput Design: Rated at 80 kg per hour, this pulverizer processes large sample volumes quickly, making it suitable for labs with high daily sample loads. The 250 mm diameter discs and optimal spindle speed (910 rpm) maximize material flow while preventing overheating, ensuring the sample’s chemical properties remain unchanged during grinding.

• Robust Spindle and Bearing Assembly: The main spindle runs on heavy-duty, sealed bearings that resist dust ingress and require no lubrication. The spindle is precisely machined and balanced to reduce vibration, contributing to the unit’s quiet operation and mechanical stability. This robust design supports continuous operation without compromising alignment.

• Easy Cleaning and Cross-Contamination Prevention: The pulverizer features a hinged or removable end cover and a large access opening, allowing full exposure of the grinding chamber for thorough cleaning. The hopper and disc assembly can be quickly removed or brushed clean, minimizing downtime between samples and eliminating cross-contamination risks—critical for accurate analysis.

• Low Noise Operation: Sound-dampening engineering and vibration isolation reduce operational noise to a comfortable level, enhancing the laboratory work environment. This makes it suitable for installation in labs where multiple instruments run simultaneously, without contributing to excessive background noise.

• Safe and Enclosed Grinding Chamber: The grinding process occurs within a fully enclosed housing that prevents dust leakage and protects operators from flying particles. The top-mounted feed hopper includes a safety cover to keep hands clear of the rotating discs, and an integrated dust extraction port can be connected to a filtration system for cleaner air.

• Versatile Material Compatibility: Designed for medium-hard materials, this pulverizer efficiently handles a wide range of substances including coal, coke, limestone, iron ore, copper ore, and various minerals. Its high manganese steel discs are especially suited for abrasive samples, reducing wear compared to standard steel.

• Stable Performance Under Continuous Load: The robust 3 kW motor and efficient V-belt transmission deliver consistent torque, preventing stalling even when grinding tough materials. The machine’s thermal design ensures the motor and bearings remain within safe operating temperatures during extended runs.

• Compact Footprint: Despite its high capacity, the pulverizer has a compact, floor-standing design that fits easily into crowded laboratories. Integrated leveling feet and a low center of gravity provide stability without requiring special mounting.

Applications

Technical Specifications

Why Choose This Product

• Proven Long-Term Durability: The mainframe is cast from high-strength iron, providing a rigid foundation that absorbs vibration and resists deformation over years of service. The high manganese steel grinding discs are heat-treated to achieve a hardness that balances wear resistance with impact toughness, preventing cracking while maintaining sharp cutting edges. This combination ensures the pulverizer remains accurate and reliable even in 24/7 mining labs.

• Precision Particle Control: The gap adjustment mechanism employs a threaded spindle with negligible backlash, allowing the operator to set the disc clearance with micrometer precision. Once set, a locking handwheel secures the position, preventing drift during operation. This repeatability is crucial for laboratories that must adhere to strict standard operating procedures.

• Low Total Cost of Ownership: In addition to durable wear parts, the pulverizer uses standard industrial components such as off-the-shelf V-belts and bearings, reducing downtime and maintenance costs. The motor is a commercially available 3 kW unit, easily replaceable worldwide. Its energy-efficient design consumes minimal electricity per ton of material processed.

• Operator-Friendly Design: Cleaning is simplified by a large, hinged top cover that swings open without tools, providing unobstructed access to the grinding chamber. The hopper can be detached in seconds for washing. Safety interlocks prevent operation when the cover is open. Low noise and vibration reduce operator fatigue, making it suitable for extended manual operation.

• Comprehensive Support: We provide detailed documentation, including installation guides and maintenance schedules. Our support engineers can assist with grinding trials to help you determine the optimal settings for your specific materials. For specialized needs, we offer modifications such as modified disc materials or integration with automated sample handling systems. Reach out today for a detailed quote or to request a demonstration of this reliable disc pulverizer.