rod mill
Sealed Four Roll Laboratory Rod Mill Pulverizer for Mineral Sample Preparation and Ore Fine Powder Grinding
Item Number: PP-RM04
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Product Overview
This sealed four-roll laboratory rod mill is a high-efficiency sample preparation system designed for the rapid pulverization of raw materials into fine, homogeneous analytical powders. Utilizing heavy-duty tumbling rod grinding action, the equipment reduces coarse mineral feeds under 2mm down to fine particle distributions between 80 and 200 mesh. It provides dependable, repeatable sample grinding essential for precise instrumental analysis, quality inspection, chemical assaying, and mineralogical testing across high-throughput analytical environments.
Engineered specifically for demanding material preparation workflows, the system processes a wide spectrum of hard and abrasive feedstocks. Primary use cases include the size reduction of gold ore, manganese ore, lead-tin minerals, limestone, coal, metallurgical coke, gangue, and various tough non-metallic minerals. The unit serves critical operational roles across geology, extraction metallurgy, coal processing, construction materials, mining operations, industrial chemical manufacturing, and academic research institutions.
Constructed with an all-inclusive cold-rolled steel outer casing, this system completely isolates moving drive components while containing particulate dust and dampening operational noise. The structural base incorporates specialized rubber vibration-damping mounts that absorb mechanical shock, suppress resonance, and ensure smooth, stable operation during continuous high-load milling cycles. This robust engineering delivers long-term operational reliability, consistent particle size distributions, and minimal operator intervention under aggressive daily usage.
Key Features
- High-Impact Tumbling Rod Mechanics: Driven by an electric motor via a precise four-roller arrangement, the equipment continuously rotates grinding cylinders packed with internal steel rods and sample material. The resulting combination of high-energy impact, grinding, and inter-particle friction efficiently reduces hard ores into uniform micro-powders.
- Sealed Heavy-Duty Cold-Rolled Steel Housing: The entire mechanical frame and drive system are completely enclosed within a durable, precision-formed cold-rolled steel plate structure. This housing maintains a clean laboratory environment by trapping fine particulate dust, suppressing acoustic output, and presenting a sleek, easy-to-clean industrial exterior.
- Vibration-Damping Base Architecture: Integrated heavy-duty rubber damping blocks mounted at the base structure effectively isolate mechanical vibrations generated during heavy milling cycles. This design eliminates operational instability, minimizes machine drift, and protects nearby sensitive laboratory instrumentation from floor-borne resonance.
- Adjustable Rotational Speed Drive: Equipped with a controllable roller drive mechanism maintaining a nominal rotation speed of 160 ± 2 r/min. Operators can fine-tune rotational parameters to optimize grinding kinetics, match material friability, and prevent over-grinding or excessive thermal buildup.
- Versatile Multi-Capacity Jar Compatibility: Supports a broad range of interchangeable grinding jar volumes, including 1.0L, 1.65L, 1.9L, and 2.6L capacities. Barrel outer diameters can be selected from standard sizes of 144mm, 130mm, 125mm, and 106mm, allowing seamless scaling for varied batch sizes and sample characteristics.
- Contamination-Free Enclosed Operation: The completely sealed grinding cylinder and outer protective enclosure prevent cross-contamination between consecutive analytical runs while safeguarding laboratory personnel from airborne silica or metallic dust exposure.
- Ergonomic and Maintenance-Friendly Layout: Engineered with a compact footprint and accessible loading geometry, the unit allows rapid installation, effortless loading and unloading of heavy grinding jars, and straightforward routine maintenance for maximum operational uptime.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Geological & Mining Assay Preparation | Pulverizing core samples, gold ores, manganese ores, and lead-tin minerals from <2mm feed down to 80-200 mesh powders. | Delivers homogeneous sample fractions critical for accurate elemental assaying, fire assay, and quantitative mineralogical evaluation. |
| Metallurgy & Steelmaking QC | Fine grinding of iron ore concentrates, metallurgical coke, coal, and fluxing limestone prior to XRF or ICP spectroscopic inspection. | Ensures rapid sample turnaround and uniform particle size distribution required for highly repeatable elemental composition metrics. |
| Cement & Building Materials Testing | Processing raw meal, clinker, gypsum, limestone, and aggregate samples to sub-200 mesh target fineness for quality verification. | Achieves consistent grain size reduction, enabling precise analytical verification of cementitious compounds and raw mix ratios. |
| Coal & Energy Resource Characterization | Crushing and fine-milling coal, anthracite, and petroleum coke specimens for proximate analysis and calorific value testing. | Prevents moisture loss and structural degradation during pulverization, yielding reliable coal grading and ash content determination. |
| Industrial Mineral & Refractory R&D | Milling tough non-metallic minerals, quartz, gangue, and ceramic raw materials in research and development facilities. | Sustains aggressive impact energy on hard materials without structural strain, preserving sample purity during ultrafine size reduction. |
| Chemical & Material Science Labs | Batch fine-grinding of synthesized inorganic materials, pigments, catalysts, and slags for physical characterization. | Supports adaptable processing volumes from 1.0L to 2.6L with precise speed control to meet diverse protocol specifications. |
Technical Specifications
| Parameter | Base Specification (PP-RM04 Series) | Notes & Variations |
|---|---|---|
| Model Identifier | PP-RM04 | Standard Base Identifier |
| Drive Roller Configuration | Four-Roller Parallel Drive (4-Roll) | Multi-Jar Supporting Mechanism |
| Maximum Feed Particle Size | < 2 mm | Coarse feed input capability |
| Discharge Powder Fineness | 80 ~ 200 Mesh (目) | Suitable for instrumental analysis |
| Standard Grinding Jar Diameter | Φ 144 mm | Default installed barrel diameter |
| Optional Grinding Jar Diameters | Φ 130 mm, Φ 125 mm, Φ 106 mm | Selectable based on sample characteristics |
| Standard Jar Volume Capacities | 1.0 L, 1.65 L, 1.9 L, 2.6 L | Customizable cylinder capacities available |
| Grinding Barrel Rotation Speed | 160 ± 2 r/min | Speed adjustable for process control |
| Drive Motor Rated Power | 1.5 kW | High-torque industrial motor |
| Electrical Input Voltage | 380V / 50Hz | Three-phase standard industrial supply |
| External Enclosure Material | Cold-Rolled Steel Plate | Fully sealed protective housing |
| Vibration Isolation System | Base Rubber Damping Mounts | High-density anti-vibration blocks |
| Operational Grinding Media | Hardened Steel Rod Set | High-impact tumbling action |
Why Choose This Product
- Superior Structural Rigidity & Build Quality: Constructed with heavy-gauge cold-rolled steel and reinforced internal drives, this system withstands continuous high-load milling of abrasive mineral samples without structural deformation or premature mechanical wear.
- Exceptional Operational Stability: Integrated rubber damping mounts effectively isolate vibration at the source, dramatically reducing laboratory ambient noise and allowing smooth, unattended operation alongside sensitive analytical instrumentation.
- Flexible Application Scalability: With support for multiple jar diameters (106mm to 144mm) and variable volume capacities (1.0L to 2.6L), laboratory managers can easily standardize sample preparation protocols across diverse material types and batch requirements.
- Strict Dust Isolation & Health Safety: The dual-layer sealing approach—combining sealed grinding cylinders with an all-inclusive protective outer housing—safeguards laboratory personnel from dust exposure and prevents airborne cross-contamination.
- Precision Process Repeatability: Micro-controlled rotational speed combined with uniform tumbling geometry ensures that every sample batch reaches identical particle fineness within established processing timeframes, guaranteeing flawless analytical consistency.
Contact our technical sales team today to receive detailed pricing, request custom grinding cylinder configurations, or consult with our material processing specialists regarding your specific sample preparation requirements.
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