rod mill
Laboratory Three Roll Four Barrel Rod Mill Ore Sample Preparation Grinder
Item Number: PP-RM03
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Product Overview
This high-precision multi-barrel laboratory rod mill is an advanced sample preparation solution engineered specifically for geological, metallurgical, and chemical assay applications. Utilizing a continuous line-contact rod grinding mechanism across four independent barrels mounted on a three-roller drive chassis, the system delivers efficient particle size reduction and continuous, simultaneous sample homogenization. By converting raw mineral samples into fine powders within tightly sealed grinding chambers, the equipment eliminates tedious post-grinding manual screening and mixing steps while dramatically reducing workplace exposure to hazardous airborne silica dust.
Designed primarily for mining assay facilities, mineral processing research institutes, and geological testing laboratories, this equipment excels at processing tough ores, concentrates, and hard mineral samples. The internal grinding kinematics rely on heavy rolling rods rather than high-impact hammers, preventing sample loss and protecting fragile metal structures during size reduction. This controlled grinding action makes the unit particularly effective for preparing gold and precious metal ores where accurate, repeatable assay results are paramount.
Engineered for unyielding operational reliability under continuous laboratory duties, the unit integrates automated micro-latch sealing, forced air extraction, and intelligent overcurrent protection. Operating personnel benefit from an ergonomic design that drastically reduces physical effort during barrel loading, discharge, and cleaning. The equipment provides mining enterprises and analytical laboratories with high-throughput capacity, maximum operator safety, and consistent grinding performance across thousands of operating cycles.
Key Features
- Four-Barrel Simultaneous Processing: The three-roller drive bed accommodates four independent grinding barrels simultaneously, enabling concurrent processing of distinct samples without cross-contamination risks.
- Line-Contact Rod Grinding Kinematics: Replaces impact crushing with smooth, high-shear rod rolling action, delivering uniform particle breakdown down to 80-200 mesh while preserving fine gold structure and preventing over-grinding.
- Integrated Localized Dust Extraction Hood: Features a built-in negative-pressure exhaust fan connected to a targeted collection hood that captures fine dust particles at the source before they can escape into the lab atmosphere.
- Mechanical Air-Assist Cleaning System: Incorporates an automated brush pressure mechanism combined with positive air flushing to clean barrel bodies and contact zones thoroughly, maximizing sample recovery between test batches.
- Leak-Proof Micro-Latch Lock Structure: Heavy-duty horizontal micro-latching clamps secure barrel lids firmly under operational vibration, preventing powder dusting and slurry leakage during high-speed rotation.
- Noise-Attenuated Rubber Coated Rollers: Drive rollers are jacketed in high-durability elastomeric rubber, which dampens operational vibration and mechanical chatter to create a significantly quieter laboratory work environment.
- Smart Operational Downtime-Excluding Timer: Digital timer tracks net grinding runtime exclusively by pausing cumulative clock progress during power interruptions, guaranteeing exact total energy input per sample.
- Automated Overcurrent Trip Protection: Smart electrical controls automatically disconnect power upon detecting mechanical jams or current overloads, enabling safe, unattended overnight grinding operations.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Gold Ore Assay Sample Preparation | Pulverizes raw gold-bearing rocks and drill cores into sub-200 mesh homogenous powders for fire assay and wet chemical analysis. | Prevents metallic gold smear and preserves exact particle distribution for reproducible, highly stable assay figures. |
| Geological & Mineral Exploration | Processes drill cuttings, channel samples, and stream sediments across multi-barrel channels for exploration mapping. | Enables rapid, high-volume sample throughput with absolute zero cross-contamination between exploration samples. |
| Metallurgical Pilot Plant Testing | Prepares fine mineral feed stocks for flotation tests, leachability studies, and magnetic separation trial runs. | Produces narrow particle size distributions without excess fines, optimizing downstream mineral recovery testing. |
| Industrial Minerals & Refractories | Reduces quartz, feldspar, ceramic slips, and industrial clays to fine consistent powders for quality verification. | Delivers uniform particle breakdown without iron contamination from severe mechanical impact methods. |
| Environmental Tailings Analysis | Grinds mine tailings, slag samples, and contaminated soil matrixes for heavy metal concentration screening. | Enclosed grinding and active dust extraction prevent operator exposure to toxic dust and silica particulate. |
| Academic Material Science Research | Provides reliable, small-scale batch grinding for mineralogy research, synthesis precursors, and solid-state materials. | Compact multi-barrel platform allows flexible parameter testing across small batch sizes under strict time control. |
Technical Specifications
| Specification Parameter | Value / Metric Details |
|---|---|
| Equipment Identification Model | PP-RM03 |
| Machine Configuration | Three-Roller Chassis with Four Independent Grinding Barrels (三辊四筒) |
| Grinding Action Principle | Continuous Line-Contact Rod Grinding (棒磨) |
| Maximum Feed Particle Size | < 2.0 mm |
| Discharge Particle Size Range | 80 ~ 200 Mesh (0.18 mm ~ 0.075 mm) |
| Grinding Barrel Outer/Inner Diameter | Φ144 ± 0.2 mm |
| Grinding Barrel Rotational Speed | 160 ± 2 r/min (Adjustable speed control) |
| Drive Motor Rated Power | 0.37 kW |
| Electrical Input Voltage | 380V / 50Hz (Standard Three-Phase) |
| Sealing & Locking Mechanism | Horizontal Micro-Latch Quick-Clamping Assembly |
| Dust Suppression & Exhaust | Integrated Localized Containment Hood with Exhaust Fan |
| Cleaning Mechanism | Mechanical Brush Pressure Assist with Forced Air Extraction |
| Roller Armor Construction | Noise-Dampening Heavy-Duty Elastomeric Rubber Coating |
| Safety & Protection Interlocks | Automatic Overcurrent Shutdown & Unattended Operation Support |
| Timer Controller Type | Intelligent Net-Run Cumulative Digital Timer |
Why Choose This Product
- Unmatched Gold & Precious Metal Assay Accuracy: The gentle yet powerful rod-grinding motion prevents physical over-grinding and metallic smearing, ensuring gold and silver particles are liberated uniformly for stable assay results.
- Comprehensive Operator Hygiene Protection: Enclosed micro-latching barrels combined with active negative-pressure dust extraction minimize airborne silica dust, dramatically improving laboratory safety standards.
- Exceptional Operational Efficiency: Simultaneous four-barrel capability paired with mechanical brush-assisted cleaning reduces batch turnaround times and eliminates tedious manual sifting procedures.
- Robust Industrial Build Quality: Featuring heavy-gauge frames, rubber-dampened drive rolls, and overcurrent auto-shutdown protection, this unit provides decades of dependable operation in demanding mining environments.
- Precise Energy Delivery & Repeatability: The smart timer measures true operational grinding hours independently of power fluctuations, delivering exact batch-to-batch consistency for scientific sample testing.
Contact our technical sales team today to request pricing details, custom barrel material options, or a comprehensive quote for your laboratory sample preparation facilities.
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