Disc & Rotor Mills
Laboratory Disc Pulverizer Fine Grinding Mill Ore Sample Preparation Equipment
Item Number: PP-GE23
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Product Overview
This high-efficiency laboratory disc pulverizer is engineered for rapid fine grinding and size reduction of medium-hard ores, minerals, and brittle materials. Utilizing high-speed relative rotation between a stationary grinding disc and a motor-driven dynamic disc, the equipment exerts intense compressive pressure and friction to convert coarse feed into uniform fine powders. Capable of handling raw feed inputs up to 20 mm and reducing them down to 0.5 mm in a single continuous pass, or further down to 0.15 mm through targeted adjustment, it provides an indispensable sample preparation solution for demanding laboratory environments.
Designed primarily for analytical testing across geology, mining, metallurgy, building materials, chemical engineering, and environmental soil research, the unit plays a critical role in fire assaying and material characterization. By rapidly homogenizing sample batches, it significantly expands particle surface area, facilitating maximum contact efficiency between fluxing agents and target minerals during downstream smelting and chemical extraction processes.
Constructed with a heavy cast frame, precision-aligned spindle, and robust belt drive system, this system delivers exceptional mechanical stability and low operational noise under continuous duty. Simple mechanical handwheel controls allow operators to adjust grinding gap clearance with high precision, guaranteeing consistent particle size distributions, long component service life, and reliable sample integrity batch after batch.
Key Features
- Dual-Disc Compressive Friction Technology: Utilizes a dynamic rotating disc paired against a fixed stationary disc to generate high compressive force and friction, rapidly pulverizing tough and brittle samples.
- Single-Pass Fine Milling Performance: Efficiently processes large raw feed inputs up to 20 mm directly down to 0.5 mm in a single pass, drastically accelerating sample preparation workflows.
- Precision Handwheel Gap Adjustment: Features a screw-driven spindle mechanism controlled by dual handwheels, enabling fine micro-adjustments of the grinding disc gap to achieve specific output particle sizes from 1.0 mm down to 0.15 mm.
- High-Torque V-Belt Drive System: Powered by a robust 1.1 kW industrial motor transferring motion via a V-belt assembly to maintain a steady 780 rpm spindle speed while dampening motor vibrations.
- Dust-Enclosed Grinding Chamber: Built with a sealed housing composed of the body frame, end cover, and top cover to retain fine airborne dust during operation, maintaining a safe and clean laboratory atmosphere.
- Top-Mounted Feed Hopper System: Engineered with an integrated top feeding chute that channels material directly into the central grinding zone between the discs for continuous, efficient processing.
- Optimal Flow Perimeter Discharge: Ground material travels outward via centrifugal force and friction, discharging smoothly through the peripheral disc gap into the lower collection hopper without packing or clogging.
- Fire Assay Sample Homogenization: Delivers precise, fine grain reduction that optimizes particle surface exposure, maximizing flux interaction and precious metal collection efficiency during assay smelting.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Mining & Fire Assay Preparation | Pulverizes gold, silver, and precious metal ores prior to crucible smelting and cupellation. | Maximizes sample surface area and contact with fluxing agents for superior extraction rates. |
| Geological & Mineral Assay | Grinds hard mineral specimens, rocks, and core samples for X-ray fluorescence (XRF) and wet chemistry analysis. | Delivers highly uniform sample homogeneity for accurate geochemical testing results. |
| Metallurgical Quality Control | Prepares slag, sintered materials, iron ore, and alloy additives for compositional laboratory testing. | Enables high-throughput continuous grinding with minimal wear contamination. |
| Soil & Environmental Science | Fine-grinds dried soil, sediment, and environmental core samples for trace element and heavy metal screening. | Provides rapid size reduction to 0.15 mm without sample segregation or material loss. |
| Ceramics & Refractory Testing | Crushes raw clay, silica, feldspar, and technical ceramic powders prior to compaction and firing analysis. | Ensures precise particle sizing required for repeatable density and shrinkage studies. |
| Building Materials Testing | Processes cement clinker, limestone, gypsum, and concrete aggregates for physical and chemical testing. | Delivers reliable 25 kg/h throughput for routine laboratory sample verification. |
Technical Specifications
| Parameter | Specification Details (PP-GE23) |
|---|---|
| Model Identifier | PP-GE23 (Φ175 Grinding Configuration) |
| Grinding Disc Diameter | 175 mm |
| Maximum Raw Feed Size | 2–3 mm (Capable of up to ~20 mm initial pass reduction) |
| Discharge Particle Size Range | 1.0 mm to 0.15 mm |
| Production Throughput Capacity | 25 kg/h |
| Main Spindle Rotational Speed | 780 rpm |
| Motor Specification Model | Y909-4 |
| Motor Rotational Speed | 1400 rpm |
| Motor Rated Power | 1.1 kW |
| Drive Mechanism | Heavy-duty V-belt pully transmission system |
| Disc Gap Adjustment | Dual handwheel with precision lead screw mechanism |
| Chamber Feeding Interface | Top-mounted gravity feed hopper |
| Sample Discharge Assembly | Perimeter disc clearance into bottom collection hopper |
Why Choose This Product
- Engineered Mechanical Reliability: Solid cast-iron housing and precision-machined spindle bearings guarantee long-term stability under heavy daily crushing loads.
- Precise Particle Sizing: Micro-adjustable gap mechanism delivers repeatable target grain sizes, minimizing oversized fractions and superfine dust generation.
- High Operational Efficiency: Process up to 25 kg/h of raw material continuously, substantially improving sample throughput in high-volume analytical labs.
- Fire Assay Optimized: Specially suited for precious metal ore preparation, enhancing chemical flux interaction through precise sample surface area expansion.
- Simple Maintenance & Operation: Intuitive handwheel controls and quick-access grinding chambers allow fast cleaning between runs to eliminate cross-contamination.
Contact our technical engineering team today to receive a personalized quotation or custom sample preparation solution tailored to your laboratory requirements.
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