Rod Mill
Laboratory Small Rod Mill Barrel High Precision Rod Grinding Jar for Ore Sample Preparation
Item Number : KT-BMD
Price varies based on specs and customizations
- Barrel Volume Range
- 0.92 L - 4.12 L
- Grinding Media Setup
- Combined Hexagonal & Round Rods
- Target Fineness Performance
- Up to 99.8% Passing 200 Mesh
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Product Overview
This high-efficiency laboratory rod grinding barrel is designed as a core consumable accessory for small-scale roller rod mill systems. Operating resting directly on driven machine support rollers, the unit provides controlled rotation that drives internal grinding media across the target sample mass. It enables rapid size reduction of raw mineral ores, rocks, and hard industrial solids into fine, homogenous powders suitable for chemical assaying, X-ray fluorescence (XRF) analysis, mineral dressing evaluation, and quality control testing.
Built specifically for demanding laboratory environments, the equipment utilizes a dual-geometry grinding media configuration comprising both cylindrical round rods and specialized hexagonal rods. As the barrel rotates on the drive rollers, the combined cascading and impacting forces generated by the mixed media shatter tough mineral aggregates into fine particles. This dual-action grinding mechanics delivers superior comminution efficiency, ensuring high sample throughput while minimizing over-grinding and fine dust loss.
Engineered with robust wear resistance and precise structural integrity, this grinding system offers consistent, repeatable performance during continuous or batch milling cycles. Its standardized dimensions and optimized volume ratios allow laboratory operators to precisely calculate charge capacities and milling durations, ensuring dependable results across geological exploration, metallurgical research, mining QA/QC, and ceramic powder synthesis.
Key Features
- Dual-Geometry Grinding Media System: Combines precision-machined cylindrical round rods and multi-faceted hexagonal rods to maximize both high-impact crushing and surface shear attrition, accelerating sample comminution.
- Precision Roller Drive Alignment: Designed with smooth, high-concentricity outer cylindrical walls that seat securely on laboratory mill drive rollers, ensuring smooth rotation without slip or vibration.
- Optimized Volumetric Loading Capacity: Features a calibrated internal volume structure engineered for effective sample loading ratios between 20% and 30% of working volume, preventing media choking and optimizing kinetic energy transfer.
- Heavy-Duty Wear-Resistant Construction: Built from high-grade wear-resistant materials to withstand severe impact and abrasive friction during high-density mineral milling without introducing unmeasured metallic contamination.
- Calibrated Grinding Kinetics: Standardized diameter-to-length proportions provide repeatable milling curves, allowing operators to achieve up to 99.8% sample passing through 200 mesh (75 µm) screens within pre-calculated time intervals.
- Multiple Volumetric Capacities: Offered in a broad spectrum of sizes from compact 0.92 L benchtop models up to 4.12 L high-capacity barrels to accommodate varying laboratory sample batch requirements.
- Secure Leak-Proof Sealing: Equipped with tight-tolerance end closures to maintain an enclosed milling environment, preventing sample loss, dust escape, and cross-contamination during operation.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Geological Ore Sample Preparation | Pulverizing core samples, quartz, gold-bearing pyrites, and rock specimens into fine powders for chemical and XRF assaying. | Achieves rapid particle size reduction to 200 mesh while preserving sample representativeness. |
| Metallurgical Beneficiation Testing | Grinding raw mineral feeds to evaluate liberation size and flotation/magnetic separation performance. | Delivers uniform size distribution curves with controllable fine generation for accurate bench testing. |
| Pyrite & Heavy Mineral Milling | High-density grinding of pyrite (specific gravity ~5.26 t/m³) and heavy metallic ores under heavy impact. | Robust construction resists excessive wall wear and handles heavy volume-to-mass loading without stalling. |
| Industrial Minerals & Ceramics Research | Fine wet or dry milling of clays, silicates, feldspar, and advanced oxide powders for material formulation. | Uniform media action prevents agglomeration and provides narrow particle size distributions. |
| Mining QA/QC Control Labs | Routine daily batch crushing of production run samples for grade verification and moisture analysis. | Quick loading and seal integrity streamline high-throughput laboratory workflows. |
| Academic & Institutional R&D | Flexible benchtop pulverization for geological, chemical, and materials engineering research projects. | Versatile capacity options accommodate small research samples with fully predictable kinetics. |
Technical Specifications
Barrel Dimensions, Volumes, and Media Specifications
| Model | Outer Diameter (mm) | Inner Diameter (mm) | Inner Height / Length (mm) | Total Barrel Volume (L) | Round Rod Count (pcs) | Hexagonal Rod Count (pcs) | Effective Working Volume (L) | Max Pyrite Charge @ 30% (kg) |
|---|---|---|---|---|---|---|---|---|
| KT-BMD-108x170 | 108 | 97 | 125 | 0.92 | 3 | 2 | 0.42 | 0.70 |
| KT-BMD-127x206 | 127 | 115 | 159 | 1.65 | 3 | 2 | 0.80 | 1.26 |
| KT-BMD-144x237 | 144 | 134 | 185 | 2.50 | 3 | 2 | 2.10 | 3.30 |
| KT-BMD-166x250 | 166 | 152 | 198 | 3.60 | 4 | 3 | 3.00 | 4.90 |
| KT-BMD-180x237 | 180 | 134 | 185 | 3.80 | 4 | 3 | 3.28 | 5.18 |
| KT-BMD-180x250 | 176 | 162 | 200 | 4.12 | 4 | 3 | 3.54 | 5.60 |
Note: Loading calculations are based on pyrite/gold ore with a specific gravity of 5.26 t/m³. Practical sample loading capacity is recommended at 20% to 30% of effective barrel volume.
Internal Rod Media Diameter Specifications
| Model | Barrel Outer Diameter (mm) | Internal Rod Diameter (mm) |
|---|---|---|
| KT-BMD-108x170 | Φ108 | 18 |
| KT-BMD-127x206 | Φ127 | 22 |
| KT-BMD-144x237 | Φ144 | 24 |
Grinding Time vs. Sample Mass Performance Table
Target Fineness: 99.8% passing through 200-mesh sieve (75 µm)
| Barrel Outer Diameter (mm) | 0.5 Hour Grinding Mass (g) | 1.0 Hour Grinding Mass (g) | 2.0 Hours Grinding Mass (g) | 4.0 Hours Grinding Mass (g) |
|---|---|---|---|---|
| Φ108 (KT-BMD-108x170) | 60 | 100 | 130 | 160 |
| Φ127 (KT-BMD-127x206) | 120 | 200 | 250 | 350 |
| Φ144 (KT-BMD-144x237) | 200 | 250 | 330 | 600 |
Why Choose This Product
- Synergistic Dual-Media Kinematics: The combination of round and hexagonal rods creates unmatched milling dynamics, combining direct impact with high-shear attrition to crush hard samples efficiently.
- Precision Engineered for Repeatability: Standardized dimensions, exact wall thicknesses, and balanced weight distributions guarantee identical grinding parameters across consecutive laboratory batches.
- Durable Heavy-Duty Construction: Manufactured from high-tensile wear-resistant alloy materials designed to withstand prolonged abrasive contact with dense mineral samples like gold ore and pyrite.
- Comprehensive Size Range: Available in capacities from 0.92 L to 4.12 L, allowing laboratories to scale batch sample sizes seamlessly without altering grinding dynamics.
- Enclosed & Clean Operation: Secure end sealing retains fine dust and prevents environmental sample loss or cross-contamination during intense tumbling.
Contact our technical sales team today to request a quote or discuss customized rod mill barrel options tailored to your laboratory's mineral processing requirements.
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