Four Roll Multi Jar Batch Laboratory Rod Mill System for Mineral Ore Sample Preparation and Geological Pulverization

Product Overview

This high-throughput four-roll multi-jar laboratory rod mill system is an industrial-grade batch pulverizing solution designed specifically for high-volume geological sample preparation, mining exploration assays, and gold ore analysis. Constructed to replace tedious, labor-intensive manual grinding and sieving workflows, the equipment operates with four precision-machined driving rollers capable of simultaneously holding and rotating up to 55 grinding jars in a single operational run. By leveraging controlled friction and shearing forces generated by internal grinding rods, this system rapidly reduces raw mineral feeds into ultra-fine, homogeneous powders with uniform grain size distributions ideal for downstream chemical and XRF analysis.

Engineered for continuous production environments, the system incorporates an integrated mechanical tilting and dumping mechanism, an automated mechanical sweeping system, and localized dust extraction hooding. This integrated architecture minimizes silica dust exposure, protects laboratory personnel from hazardous airborne particulate matter, and eliminates cross-contamination between consecutive analytical batches. The unit delivers exceptional process consistency across varied mineral matrix compositions, allowing exploration facilities, commercial testing labs, and metallurgical plants to maintain maximum throughput without sacrificing sample integrity.

Built with heavy-duty structural steel framing, vulcanized rubber roller coverings, and precision electrical controls, this batch grinding system ensures quiet operation, low mechanical vibration, and long-term durability under harsh operational conditions. Its intuitive control interface features automated timing function with power-outage memory and over-current protection, allowing operators to run extended pulverization cycles safely and unattended. Whether processing refractory gold ores, silicate rocks, or general geological specimens, this unit provides unmatched productivity, operational safety, and grinding repeatability.

Key Features

• High-Throughput Multi-Jar Batch Processing: Utilizes a heavy-duty four-roll arrangement capable of processing 40 to 55 individual grinding jars simultaneously, processing up to 50 geological samples to -200 mesh in just 1 to 2 hours.
• Low-Noise Shear and Grinding Mechanism: Employs optimized rod shear and friction grinding rather than high-impact crushing, dramatically reducing operational noise levels while preventing localized thermal degradation of volatile sample components.
• In-Jar Self-Mixing and Homogenization: Combines grinding and multi-axial mixing within sealed jars, delivering superior sample uniformity while eliminating post-grinding sieving, manual transfer, and secondary blending steps.
• Automated Cycle Timing with Power Interruption Memory: Features an advanced digital timer that records active milling hours exclusively—pausing during power loss—and shuts down automatically upon completion for safe, unattended operation.
• Over-Current Automatic Protection: Integrated electrical safeguards automatically disengage the motor during current spikes or mechanical blockages, protecting the drive motor and transmission components from damage.
• Integrated Dust Control and Exhaust Hooding: Built-in open-type hood with an integrated pressure fan collects fine particulates directly at the jar dumping and sweeping station, exhausting dust before it can contaminate the working environment.
• Mechanical Sweeping and Contamination Prevention: Equipped with an automated motor-driven brush and exhaust fan system that cleans jars thoroughly between cycles, effectively preventing inter-sample cross-contamination.
• Horizontal Micro-Single Latch Clamping: Features high-tensile micro-latch jar closures that ensure airtight, leak-proof sealing, rapid manual loading, and tool-free locking during high-speed rotation.
• Heavy-Duty Vulcanized Rubber Rollers: Precision 130 mm diameter rollers wrapped in high-wear rubber provide high friction grip, stable jar rotation, and vibration-dampened mechanical operation.

Applications

Technical Specifications

System Overview Parameters

Standard Grinding Jar Specifications & Dimensions

Sample Processing & Grinding Efficiency Data

Why Choose This Product

• Superior Batch Efficiency: Simultaneously handles up to 55 jars, dramatically outperforming single-jar pulverizers and streamlining large-scale mining assay workflows.
• Advanced Personnel Protection: Built-in mechanical dumping and local exhaust hooding actively capture silica dust at the source, ensuring full compliance with occupational health regulations.
• Zero Cross-Contamination: Dedicated mechanical sweeping brushes and sealed micro-latch jars prevent cross-sample carryover between analytical batches.
• Unmatched Operational Reliability: Industrial 1.5 kW drive system with power-outage memory and over-current protection delivers non-stop continuous operation in demanding remote laboratory environments.
• Versatile Multi-Size Capability: Fully customizable roller spacing accommodates four standard jar sizes from 0.92 L to 3.60 L, supporting diverse sample volumes on a single footprint.

Contact our technical sales team today to request a detailed quotation, discuss custom jar configurations, or evaluate sample pulverization solutions tailored to your laboratory needs.

Trusted by Industry Leaders