Rod Mill
Laboratory Four Roller Multi Jar Rod Mill for Mineral Grinding and High Throughput Ore Sample Preparation
Item Number : KT-BMJ
Price varies based on specs and customizations
- Batch Sample Capacity
- 4 to 50 Barrels Simultaneously
- Discharge Fineness
- 180 - 400 Mesh (38 - 80 μm)
- Roller Speed Options
- 140 / 160 r/min (VFD Adjustable)
Shipping:
Contact us to get shipping details Enjoy On-time Dispatch Guarantee.
Why Choose Us
Easy ordering process, quality products, and dedicated support for your business success.
Product Overview
This high-throughput laboratory rod mill system is purpose-built to address the demanding sample preparation and beneficiation testing requirements of geological, metallurgical, mining, and chemical assay laboratories. Engineered for rapid batch processing, this unit features a multi-roller configuration capable of running multiple grinding jars simultaneously—handling anywhere from 4 to 50 individual samples in a single automated operational cycle. By combining high structural rigidity with parallel sample handling, the machine eliminates analytical bottlenecks and ensures identical physical grinding kinetics across every analytical specimen.
Primarily utilized for gold ore analysis, geochemical exploration, coal pulverization, and mineral floatability studies, the equipment adapts effortlessly to both dry and wet milling workflows. Inside each precision-machined grinding jar, tumbling media apply a continuous combination of high-energy impact and shear attrition. This continuous motion achieves self-mixing throughout the grinding process, preventing agglomeration, minimizing over-pulverization, and preserving natural particle size distributions necessary for accurate screening and metallurgical recovery tests.
Engineered for round-the-clock industrial laboratory environments, this milling platform features ruggedized drive mechanisms, heavy-duty parallel rubber rollers, and dynamic variable-frequency speed regulation. The equipment delivers continuous, reproducible performance when handling high-hardness rock specimens, abrasive minerals, or sensitive analytical assays. Laboratory managers and metallurgists gain reliable, automated sample preparation that minimizes human labor, reduces inter-batch contamination, and accelerates downstream metallurgical assaying and flotation screening.
Key Features
- High-Throughput Multi-Jar Architecture: Parallel multi-roller engineering accommodates 4, 16, or up to 50 grinding barrels simultaneously, dramatically boosting operational throughput and eliminating sample preparation backlogs in commercial assay laboratories.
- Dual Dry and Wet Grinding Capabilities: Fully sealed, chemically resistant barrel assemblies allow seamless switching between dry comminution and wet slurry grinding without compromising particle kinetics or mechanical reliability.
- Minimized Over-Grinding via Linear Rod Action: Line-contact grinding mechanics utilize hardened steel rods to produce tight particle size distributions ranging from 180 to 400 mesh, actively preventing the excessive sliming and sample over-crushing typical of point-contact ball milling.
- Interchangeable Media Versatility: Grinding barrels can effortlessly interchange between precision alloy steel rods and polished steel balls, transforming the apparatus from a specialized laboratory rod mill into a high-capacity laboratory ball mill within minutes.
- Variable-Frequency Dynamic Speed Regulation: Integrated electronic frequency conversion provides seamless, continuous rotation speed tuning between 140 r/min and 160 r/min, permitting precise optimization for various jar diameters and material densities.
- Automated Self-Mixing Action: Continuous planetary tumbling and friction-driven rotation induce a three-dimensional cascading bed within every barrel, achieving exceptional internal sample homogenization during the grinding cycle.
- Precision Heavy-Duty Rubberized Rollers: Wear-resistant, oil-tolerant vulcanized rubber driving and driven rollers damp mechanical vibration, maintain uniform friction coefficients, and ensure quiet, slip-free barrel rotation under heavy mineral payloads.
- Ergonomic Electric-Drive Discharging Controls: Electric actuation automates barrel positioning and discharge routines, removing physical strain, preventing mechanical misalignment, and eliminating manual handling errors during continuous laboratory workflows.
- Modular Compatibility with Laboratory Flotation Units: Specifically engineered to feed standardized single-cell and suspended-trough flotation machines, serving as the benchmark comminution system for bench-scale mineral separation trials.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Gold Ore Assay Sample Preparation | Pulverizing core drillings and quartz vein gold ores down to 180–400 mesh for fire assay, aqua regia digestion, and atomic absorption spectroscopy. | Delivers uniform fine liberation without localized metal smearing or gold loss, ensuring highly representative analytical sub-samples. |
| Mineral Floatability Testing | Preparing precisely sized mineral slurries for benchtop single-cell (0.5 L to 1.5 L) and hanging-cell (0.02 L to 0.14 L) laboratory flotation units. | Eliminates excessive slime generation, preserving pristine mineral surface properties essential for collector selectivity and recovery accuracy. |
| Coal and Coke Petrology Analysis | Dry-milling raw coal, anthracite, and metallurgical coke samples to analytical fineness for proximate analysis, calorific determination, and sulfur testing. | Prevents sample overheating and oxidation through controlled mechanical attrition, preserving sample chemistry integrity. |
| Geological Exploration Core Pulverization | High-throughput batch reduction of hard-rock exploration samples, silicates, and polymetallic sulfides from 2 mm feed down to fine analytical fractions. | Enables simultaneous processing of up to 50 drill core samples under identical comminution parameters, maximizing laboratory throughput. |
| Heavy Mineral Separation (Artificial Heavy Sands) | Controlled grinding of stream sediments and heavy mineral sands to liberate indicator minerals, zircon, rutile, and rare-earth oxides. | Maintains crystal morphology without fracturing delicate indicator grains through gentle rod-impact grinding kinetics. |
| Ceramic and Specialty Chemical Synthesis | Homogenizing abrasive ceramic oxides, refractory clays, and solid-state battery precursors in dry or wet environments prior to calcination. | Self-mixing tumbling motion produces perfectly uniform multi-component blending with negligible internal jar contamination. |
Technical Specifications
| Specification Parameter | KT-BMJ-1 (Three-Roller Four-Jar) | KT-BMJ-2 (Four-Roller Sixteen-Jar) | KT-BMJ-3 (Four-Roller Fifty-Jar) |
|---|---|---|---|
| Roller Configuration | 3 Parallel Rollers (1 Drive, 2 Driven) | 4 Parallel Rollers (Active / Passive Array) | 4 Parallel Rollers (Extended Multi-Tier Array) |
| Jar Processing Capacity | 4 Grinding Barrels Simultaneously | 16 Grinding Barrels Simultaneously | 50 Grinding Barrels Simultaneously |
| Standard Barrel Diameters | Φ108 mm, Φ127 mm, Φ146 mm | Φ108 mm, Φ127 mm, Φ146 mm | Φ108 mm, Φ127 mm, Φ146 mm |
| Roller Diameter | Φ127 mm | Φ127 mm | Φ127 mm |
| Operating Roller Speed | 140 r/min / 160 r/min (VFD Regulated) | 140 r/min / 160 r/min (VFD Regulated) | 140 r/min / 160 r/min (VFD Regulated) |
| Maximum Feed Particle Size | ≤ 2.0 mm | ≤ 2.0 mm | ≤ 2.0 mm |
| Discharge Particle Size Range | 180 – 400 Mesh (38 – 80 μm) | 180 – 400 Mesh (38 – 80 μm) | 180 – 400 Mesh (38 – 80 μm) |
| Motor Power | 2.2 kW | 2.2 kW | 2.2 kW |
| Grinding Media Compatibility | Hardened Alloy Steel Rods or Steel Balls | Hardened Alloy Steel Rods or Steel Balls | Hardened Alloy Steel Rods or Steel Balls |
| Grinding Modes | Dry Grinding / Wet Slurry Grinding | Dry Grinding / Wet Slurry Grinding | Dry Grinding / Wet Slurry Grinding |
| Process Automation | Electric Tilting / Motorized Barrel Control | Electric Tilting / Motorized Barrel Control | Electric Tilting / Motorized Barrel Control |
| Compatible Flotation Feed Volumes | 0.5 L, 0.75 L, 1.0 L, 1.5 L (Single Cell) | 0.02 L, 0.06 L, 0.1 L, 0.14 L (Hanging Cell) | Multi-batch continuous analytical banks |
| Equipment Dimensions (L × W × H) | 760 mm × 510 mm × 520 mm | 1250 mm × 710 mm × 720 mm | 2180 mm × 966 mm × 868 mm |
| Equipment Net Weight | 120 kg | 220 kg | 450 kg |
Why Choose This Product
- Unrivaled Sample Homogeneity: The linear impact geometry of precision internal alloy steel rods eliminates localized concentration points, delivering exceptionally uniform grain distribution and avoiding the detrimental over-pulverization common to conventional disk mills and vibratory pulverizers.
- Massive Batch Processing Capability: By accommodating up to 50 grinding barrels simultaneously on a synchronized heavy-duty drive line, this system shortens turnaround times in high-volume mineral testing facilities while guaranteeing uniform energy input across all test specimens.
- Rugged Industrial Engineering: Built with high-torque gear motors, precision-ground driveshafts, vulcanized industrial rubber coatings, and vibration-damped structural steel framing, the equipment provides stable 24/7 continuous operation under punishing mineral processing environments.
- Process Versatility and Cost Efficiency: The dual-purpose engineering allows operators to switch seamlessly between rod milling and ball milling operations, as well as dry and wet milling methods, maximizing capital equipment utilization within academic, commercial, and metallurgical research facilities.
- Turnkey Integration and Technical Support: Fully aligned with standard laboratory flotation workflows, each unit is manufactured under stringent quality control standards and supported by comprehensive technical service, custom barrel configurations, and rapid spare-parts availability.
Contact our technical sales team today to request a quotation or explore custom barrel and roller configurations tailored to your laboratory's specific throughput and analytical criteria.
Trusted by Industry Leaders
REQUEST A QUOTE
Our professional team will reply to you within one business day. Please feel free to contact us!
Related Products
Four Roll Multi Jar Batch Laboratory Rod Mill System for Mineral Ore Sample Preparation and Geological Pulverization
High throughput four roll batch laboratory rod mill system engineered for rapid dust free preparation of gold ores and geological samples with integrated mechanical dumping automated timing control micro latch jar sealing and concentrated exhaust sweeping for efficient sample pulverization.
Laboratory Four-Body Horizontal Jar Mill
The four-body horizontal tank mill ball mill can be used with four horizontal ball mill tanks with a volume of 3000ml. It is mostly used for mixing and grinding laboratory samples.
Eco Friendly Sealed Double Layer Small Rod Mill
Discover our eco friendly sealed double layer small rod mill engineered for dust free automated laboratory sample preparation delivering uniform eighty to two hundred mesh grinding across multi barrel configurations with intelligent timing and heavy duty vulcanized rubber drive rollers.
Laboratory Small Rod Mill Barrel High Precision Rod Grinding Jar for Ore Sample Preparation
Engineered for high-precision laboratory sample pulverization, this durable rod grinding barrel incorporates specialized hexagonal and cylindrical grinding rods to deliver rapid material breakdown and uniform particle size reduction across geological, mining, and metallurgical sample preparation workflows with unmatched reliability.
Small Rod Mill Cylinder Cleaning Machine Laboratory Powder Container Cleaner
Optimize lab workflows with this automated small rod mill cylinder cleaning machine. Designed for rapid residual powder removal across multiple grinding jar diameters, it prevents sample cross-contamination during geological, metallurgical, and mining sample preparation routines effectively and reliably.
Single Layer Sealed Laboratory Rod Mill for Ore Assay Grinding and Mineral Sample Preparation
This sealed laboratory rod mill delivers precise ore grinding and automated sample homogenization for assay laboratories. Featuring advanced dust suppression, robust overcurrent protection, and multi-barrel flexibility, it ensures exceptional mineral liberation, safe operation, and consistent metallurgical testing results every batch.
Laboratory Micro Horizontal Jar Mill for Precision Sample Preparation in Research and Analysis
Discover the Micro Horizontal Jar Mill for precise sample preparation in research and analysis. Ideal for XRD, geology, chemistry, and more.
Laboratory Jar Mill with Agate Grinding Jar and Balls
Grind your materials with ease using Agate Grinding Jars with Balls. Sizes from 50ml to 3000ml, perfect for planetary and vibration mills.
Laboratory Ten-Body Horizontal Jar Mill for Lab Use
The Ten-body horizontal jar mill is for 10 ball mill pots (3000ml or less). It has frequency conversion control, rubber roller movement, and PE protective cover.
Laboratory Jar Ball Mill with Alumina Zirconia Grinding Jar and Balls
Grind to perfection with alumina/zirconia grinding jars and balls. Available in volume sizes from 50ml to 2500ml, compatible with various mills.
Laboratory Ball Mill Jar Mill with Metal Alloy Grinding Jar and Balls
Grind and mill with ease using metal alloy grinding jars with balls. Choose from 304/316L stainless steel or tungsten carbide and optional liner materials. Compatible with various mills and features optional functions.
Laboratory Single Horizontal Jar Mill
KT-JM3000 is a mixing and grinding instrument for placing a ball milling tank with a volume of 3000ml or less. It adopts frequency conversion control to realize timing, constant speed, direction change, overload protection and other functions.
Laboratory Planetary Ball Mill Rotating Ball Milling Machine
KT-P400E is a desktop multi-directional planetary ball mill with unique grinding and mixing capabilities. It offers continuous and intermittent operation, timing, and overload protection, making it ideal for various applications.
Laboratory Grinding Mill Mortar Grinder for Sample Preparation
KT-MG200 mortar grinder can be used for mixing and homogenizing powder, suspension, paste and even viscous samples. It can help users realize the ideal operation of sample preparation with more regularization and higher repeatability.
Lab Vibration Mill
Vibration Mill for Efficient Sample Preparation, Suitable for Crushing and Grinding a Variety of Materials with Analytical Precision. Supports Dry / Wet / Cryogenic Grinding and Vacuum/Inert Gas Protection.
Mini Planetary Ball Mill Machine for Laboratory Milling
Discover the KT-P400 desktop planetary ball mill, ideal for grinding and mixing small samples in the lab. Enjoy stable performance, long service life, and practicality. Functions include timing and overload protection.
High-Energy Omnidirectional Planetary Ball Mill Milling Machine for Laboratory
The KT-P4000E is a new product derived from the vertical high-energy planetary ball mill with a 360° swivel function. Experience faster, uniform, and smaller sample output results with 4 ≤1000ml ball mill jars.
High Energy Planetary Ball Mill Milling Machine for Laboratory
Experience fast and effective sample processing with the F-P2000 high-energy planetary ball mill. This versatile equipment offers precise control and excellent grinding capabilities. Perfect for laboratories, it features multiple grinding bowls for simultaneous testing and high output. Achieve optimal results with its ergonomic design, compact structure, and advanced features. Ideal for a wide range of materials, it ensures consistent particle size reduction and low maintenance.
High-Energy Omnidirectional Planetary Ball Mill Machine for Laboratory
The KT-P2000E is a new product derived from the vertical high-energy planetary ball mill with a 360°rotation function. The product not only has the characteristics of the vertical high-energy ball mill, but also has a unique 360°rotation function for the planetary body.
Sealed Laboratory Assay Sample Pulverizer High Speed Vibrating Cup Mill for Coal Ore Mineral Sample Grinding
High performance sealed laboratory sample pulverizer engineered for rapid grinding of coal coke limestone and mineral ores to fine mesh powder within two to six minutes for precise assay sample preparation in high throughput mining and industrial environments.