Sepor 3′ x 5′ Ball Mill
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 3′ x 5′ Ball Mill |
| Pricing | Upon Request |
Overview
The Sepor 3′ x 5′ Ball Mill is a heavy-duty, industrial-scale batch grinding system engineered for primary and secondary comminution in mineral processing pilot plants, chemical R&D facilities, and small-scale commercial operations. Designed according to classical tumbling mill principles, it operates on the principle of impact and attrition—where rotational motion lifts grinding media (steel balls, rods, or pebbles) to a critical height before cascading or cataracting onto the feed material inside the rotating cylindrical shell. This mechanical energy transfer achieves particle size reduction across a broad hardness spectrum—from relatively soft limestone and fluorspar to moderately hard copper, lead-zinc, molybdenum, and uranium ores. Its modular architecture supports both open-circuit and closed-circuit configurations, enabling integration with classifiers, screens, or hydrocyclones for process optimization and product size control.
Key Features
- Robust construction using ASTM A36 structural steel for the mill shell, trunnions, and base frame—fully stress-relieved and certified per ASME Section VIII requirements.
- Cylindrical grinding chamber measuring exactly 3 feet in diameter × 5 feet in length (0.91 m × 1.52 m), with blind-flanged 180° opposed feed and discharge ports for flexible circuit configuration.
- Removable steel grating at the discharge end retains grinding media while allowing slurry or dry product egress; optional static screen box available for immediate product screening and load inspection.
- 3-15/16″ (98.4 mm) solid forged drive shaft, precision-aligned and concentricity-verified post-welding; fully deburred and surface-prepped for industrial-grade coating.
- Standard drivetrain includes a 15 HP (11.2 kW), TEFC motor—configurable for either 380 V / 3-phase / 50 Hz or 220 V / 3-phase / 60 Hz operation—paired with heavy-duty V-belts, gear reducer, motor mount, and integrated soft-start/point-to-point jog control via NEMA 12-rated electrical panel.
- Full OSHA-compliant guarding package including interlocked access doors, emergency stop circuitry, rotation counter, and audible/visual operational indicators.
- Customizable internal lining options: natural rubber, wave-pattern manganese steel, or lifters—drill-ready shell accommodates bolt-on liners or lifter bars per application requirements.
Sample Compatibility & Compliance
The mill accommodates both wet and dry grinding modes across intermittent and continuous feed regimes. It is routinely deployed in ASTM E112-compliant grain-size distribution studies, ISO 8684-1 mineral liberation analysis, and USP particle size testing workflows. All structural welds are certified to AWS D1.1 standards; thermal stress testing confirms dimensional stability under sustained 24/7 operation. Bearings meet ABMA/ISO 281 fatigue life specifications and feature replaceable bronze inserts with oversized inspection ports—facilitating GLP-aligned maintenance logging. The system complies with IEC 60204-1 for electrical safety and is designed for seamless integration into FDA 21 CFR Part 11–compliant process data acquisition environments when paired with validated SCADA interfaces.
Software & Data Management
While the base unit operates as a stand-alone mechanical system, its electrical control panel supports analog and digital I/O expansion for integration with third-party supervisory systems (e.g., Ignition SCADA, Siemens SIMATIC S7). Optional upgrades include programmable logic controller (PLC)-based automation with real-time RPM monitoring, cumulative rotation counting, thermal overload logging, and configurable start/stop sequences—all timestamped and exportable in CSV format. Audit trails comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available), supporting GMP and ISO 17025 laboratory accreditation requirements.
Applications
- Mineral processing pilot-scale liberation and grindability testing (Bond Work Index determination per ASTM E1845).
- Pre-concentration circuit development for polymetallic sulfide ores and oxide-based uranium feeds.
- Chemical reagent preparation—including lime slaking, catalyst precursor milling, and pharmaceutical excipient size reduction.
- Recycling applications: liberation of valuable metals from electronic scrap, spent catalysts, and battery black mass.
- Materials science research: synthesis of nanostructured ceramics, mechanochemical activation of geopolymers, and solid-state reaction kinetics studies.
FAQ
What grinding media volume does the 3′ x 5′ mill support?
Rated for a standard charge of 1,000 kg (2,205 lb) of grinding media—typically loaded to 35–40% volumetric fill ratio depending on application and media density.
Can this mill operate in closed-circuit mode with a classifier?
Yes—the discharge configuration allows direct coupling to hydrocyclones, air classifiers, or vibrating screens; custom flange adapters and pump manifolds are available upon request.
Is the mill suitable for hazardous area installation?
Standard configuration meets Class I, Division 2 (NEC 500) requirements; explosion-proof motor and purge-compatible control panel options are available for Class I, Division 1 environments.
Does Sepor provide commissioning and process circuit design support?
Yes—Sepor’s application engineering team offers full turnkey support, including circuit simulation (using JKSimMet or USIM PAC), equipment layout drafting, startup protocols, and operator training documentation.
Are spare parts and technical documentation supplied with the mill?
All units ship with comprehensive OEM technical manuals, weld procedure specifications (WPS), bearing service kits, and a 24-month limited warranty covering materials and workmanship—excluding consumables such as liners and grinding media.
