Disc & Rotor Mills
Laboratory Disc Mill for Ore and Mineral Sample Preparation
Item Number: PP-GE21
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Product Overview
This laboratory disc mill is a robust, high-performance grinding instrument purpose-built for the efficient size reduction of medium-hard solid materials. By employing the dual action of compression and shear between a fixed and a rotating disc, it rapidly converts chunky feedstock into uniform fine powders with tight particle size distributions. The equipment is ideal for laboratories that demand consistent, reproducible sample preparation for subsequent analysis.
Engineered for use in mining, geology, metallurgy, construction, and chemical industries, this system excels at pulverizing ores, minerals, coal, coke, ceramics, and similar substances. Its variable gap adjustment allows operators to target a specific output fineness—down to 0.15 mm—making it suitable for everything from bulk sample crushing to final pellet preparation.
Constructed with a heavy-duty frame and premium wearing parts, the mill guarantees long-term reliability even in high-throughput environments. The sealed grinding chamber and low-noise operation reflect an attention to detail that ensures both operator safety and ease of maintenance. Whether for routine QC or advanced research, this disc mill delivers the repeatability and durability that professionals count on.
Key Features
- Durable High Manganese Steel Discs: The grinding discs are fabricated from premium high manganese steel, which work-hardens during operation to provide exceptional wear resistance. This material choice guarantees long-term durability and minimizes the risk of metallic contamination in your samples.
- Precision Adjustable Grinding Gap: A dual-handwheel mechanism—coarse and fine adjustment—enables operators to set the clearance between the stationary and rotating discs with micrometric precision. This control yields reproducible output particle sizes as fine as 0.15 mm, critical for applications requiring narrow size distributions.
- Sealed, Low-Contamination Sample Chamber: The fully enclosed grinding chamber prevents sample loss and cross-contamination between batches. Its design also suppresses dust generation, contributing to a cleaner laboratory environment and safer operation when handling hazardous materials.
- High Throughput with Flexible Capacity Options: Available in three disc diameters (175, 250, 350 mm), the series accommodates sample processing rates from 25 to 120 kg/h. This scalability allows labs to select the ideal balance of compactness and productivity.
- Broad Material Compatibility: While optimized for medium-hard materials like coal, ores, and minerals, the mill effectively handles a wide array of brittle to semi-hard substances, including ceramics, slags, and chemical compounds, making it a versatile tool for multidisciplinary labs.
- Quiet, High-Stability Operation: The belt-driven spindle and robust rotor assembly minimize vibration and operating noise, even under full load. The heavy cast-iron base further dampens movement, ensuring stable, long-term operation without drifting.
- Easy Maintenance and Quick Cleaning: With a straightforward design that allows rapid access to the grinding chamber and discs, cleaning between samples is fast and effortless. This reduces downtime in high-throughput environments where frequent material changes are necessary.
- Safe and Ergonomic Design: An integrated safety interlock prevents operation unless the chamber is securely closed. The ergonomic handwheel placement and loading hopper facilitate comfortable, one-person operation, even during extended use.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Coal and Coke Analysis | Grinding coal and coke samples for proximate and ultimate analysis | Reliable size reduction to 0.15mm ensures consistent analytical results and accurate compositional data. |
| Ore Sample Preparation | Pulverizing iron, copper, gold ores for assay and mineralogical studies | High throughput up to 120 kg/h supports continuous processing, reducing sample backlog. |
| Geological Sample Homogenization | Reducing rock and mineral specimens to uniform powders for geochemical testing | Adjustable gap provides precise control over particle size, improving representativeness. |
| Cement and Construction Materials | Milling raw materials such as limestone, clinker, and gypsum for quality control | Durable discs resist wear from abrasive components, minimizing maintenance and downtime. |
| Chemical Raw Material Grinding | Size reduction of medium-hard chemical compounds for process development | Sealed chamber prevents cross-contamination and eliminates dust, safeguarding operator health. |
| XRF and XRD Sample Prep | Creating fine, homogeneous powders for spectroscopic and diffraction analysis | Tight particle size distribution ensures repeatable peak intensities and accurate phase identification. |
| Ceramic and Refractory Processing | Grinding ceramic powders and refractory materials for further processing | Robust construction withstands highly abrasive materials, extending equipment lifespan. |
| Metallurgical Testing | Preparing slag, sinter, and metal powders for composition and property analysis | Low heat generation preserves sample integrity, avoiding thermal alteration of sensitive phases. |
Technical Specifications
The PP-GE21 series comprises three standard models, differentiated by disc diameter and throughput, as detailed below. All models share the same robust construction, high manganese steel grinding discs, and precision gap adjustment mechanism.
| Model | Disc Diameter (mm) | Max Feed Size (mm) | Output Size (mm) | Capacity (kg/h) | Motor Power (kW) | Dimensions LxWxH (mm) | Disc Material |
|---|---|---|---|---|---|---|---|
| PP-GE21-175 | 175 | ≤3 | 0.15 | 25 | 1.1 | 600×714×425 | High manganese steel |
| PP-GE21-250 | 250 | ≤8 | 0.15 | 80 | 3 | 1000×800×600 | High manganese steel |
| PP-GE21-350 | 350 | ≤15 | 0.15 | 120 | 4 | 1000×550×750 | High manganese steel |
The grinding mechanism uses a belt-driven spindle to rotate the movable disc against a stationary counterpart, applying shear and compression forces that efficiently fracture the feed material. The adjustable gap is set via a coarse and fine handwheel system, allowing reproducible control down to the 0.15 mm output size.
Why Choose This Product
- Proven Long-Term Reliability: Field-tested in harsh industrial environments, this disc mill is built on a foundation of heavy-duty cast components and premium wear materials. The high manganese steel discs, in particular, are designed to withstand continuous abrasion without premature failure, delivering a low total cost of ownership over years of service.
- Precision Manufacturing for Consistent Results: Every critical component is machined to tight tolerances, ensuring that disc alignment and gap settings remain stable across thousands of cycles. This manufacturing discipline translates into repeatable particle output, a non-negotiable requirement for valid analytical protocols.
- Superior Build Quality: From the carefully balanced rotor to the hand-finished grinding surfaces, our attention to detail is evident. The mill’s rigid framework and high-quality bearings minimize runout and vibration, extending the lifespan of both the machine and your sensitive measuring instruments nearby.
- Customization Capabilities: Recognizing that no two laboratories are identical, we offer bespoke modifications such as alternative disc materials for highly abrasive samples, custom hopper extensions, and integration with automated feeding systems. Our engineering team is ready to adapt this system to your specific workflow.
- Responsive Global Support: With a dedicated technical support network and comprehensive warranty coverage, you can count on timely assistance for installation, training, and troubleshooting. We view every sale as the beginning of a long-term partnership, committed to your lab’s success.
Experience the difference that precision engineering and robust construction can make in your sample preparation. Contact us today to request a quotation or to discuss a custom-tailored solution for your laboratory.
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