Vertical Coal Based Granular Activated Carbon Mechanical Strength Tester Tumbler Index Testing Equipment

Product Overview

This laboratory instrument is an engineered mechanical strength evaluation system specifically designed to measure the abrasion resistance and tumbler index of coal-based granular activated carbon. Built to meet stringent industrial testing protocols, the equipment subjects carbon granules to controlled kinetic impacts and surface attrition inside a rotating drum charged with precision steel balls. By replicating the physical stresses experienced during transport, fluidization, and operational bed packing, it provides researchers and quality assurance engineers with an accurate benchmark of particle structural integrity.

Primarily utilized across municipal water treatment facilities, industrial gas purification plants, solvent recovery units, and chemical synthesis installations, the unit serves as an indispensable tool for both activated carbon producers and end-user verification laboratories. Routine assessment of mechanical strength prevents premature attrition, carbon bed compaction, and excessive particulate dusting in active filtration columns. It enables materials scientists to monitor batch quality, optimize carbonization and activation parameters, and guarantee compliance with commercial procurement specifications.

Manufactured with industrial-grade mechanical components, the equipment delivers unwavering operational repeatability even in continuous quality inspection cycles. The heavy-gauge framework houses a balanced drive assembly that maintains precise rotational kinematics under continuous mechanical loads. Operators can depend on this system for reproducible mechanical stress parameters, eliminating laboratory-induced variability and ensuring exact comparability across internal lots and external supply chain verifications.

Detail & Parts

Key Features

• Standardized Drum Geometry: Engineered with a high-tolerance internal chamber measuring 80 ± 0.2 mm in diameter and 126 ± 0.5 mm in length, ensuring strict compliance with standardized test vessel parameters.
• Precision Axial Kinematics: Driven by an industrial 0.55 kW motor that rotates the horizontal cylinder at a steady 50 ± 2 r/min, imparting constant kinetic energy and consistent rotational momentum during each cycle.
• Optimized Lifter Plate Mechanism: Internal lifting flights raise carbon granules beyond a 90-degree radial rotation before allowing them to free-fall, generating repeatable impact, sliding friction, and realistic particle attrition.
• Calibrated Steel Impact Media: Equipped with uniform 14.3 mm diameter hardened steel balls that deliver precise crushing and surface abrasion without causing uncontrolled shattering of the carbon matrix.
• Digital Automated Cycle Timer: An integrated timing circuit preset to 5 minutes automates the complete operational sequence, shutting off rotation automatically to prevent over-testing and user timing errors.
• Rugged Structural Alignment: Built with an aligned vertical chassis that eliminates axial vibration and preserves shaft concentricity during sustained ball-mill tumbling operations.
• Hermetic Drum Sealing: Machined cylinder end caps with durable sealing interfaces prevent fine particulate escape, protecting laboratory air quality and preserving sample mass for accurate gravimetric calculations.
• Seamless Auxiliary Integration: Designed to integrate directly into standardized testing protocols alongside 200 mm test sieves, mechanical tapping shakers, analytical balances, and thermal drying ovens.

Applications

Technical Specifications

Core System Specifications

Auxiliary Equipment and Laboratory Apparatus Compatibility

Testing Methodology and Operational Principle

The evaluation process relies on controlled mechanical wear inside a rotating horizontal chamber. A prepared, pre-screened, and thermally dried carbon sample is loaded into the precision drum alongside the designated quantity of 14.3 mm steel balls. Once hermetically sealed, the drum begins axial horizontal rotation at 50 r/min.

Inside the vessel, internal lifter plates transport the granular carbon and steel balls upward along the drum curvature. As the lifter surpasses a 90-degree rotation angle, gravity overcomes frictional resistance, causing the carbon and balls to fall freely. During this cascade, the granules undergo three primary mechanical stresses: impact against the hard internal walls of the drum, collision with the steel spheres, and inter-particle frictional shearing.

Upon completion of the 5-minute automated run, the mixture is decanted, the steel balls are removed, and the remaining carbon is screened on a standardized 200 mm sieve utilizing an automated tapping shaker. The tumbler index is then determined gravimetrically by calculating the percentage of sample mass retained above the sieve aperture relative to initial mass. A higher index indicates superior mechanical cohesion, minimal friability, and higher structural resistance to handling degradation.

Why Choose This Product

• Strict Standard Compliance: Built exactly to GB/T 7702.3-2008 specifications, guaranteeing that internal inspection data can be compared across international suppliers and certification agencies.
• Precision-Toleranced Drum Assembly: Every drum is micro-machined to ensure tight adherence to the 80 ± 0.2 mm diameter and 126 ± 0.5 mm length tolerances, delivering identical kinetic shear volume across different test batches.
• Robust Heavy-Duty Drive Train: Powered by an efficient 0.55 kW industrial motor that eliminates velocity droop under load, ensuring rotation remains strictly within the required 50 ± 2 r/min band.
• Turnkey Laboratory Ecosystem: Engineered to work hand-in-hand with standard sieves, automated shakers, and drying ovens, establishing a complete, frictionless sample testing workflow.
• Minimal Maintenance Architecture: Sealed bearings and wear-resistant contact surfaces withstand corrosive activated carbon fines, delivering years of continuous, trouble-free laboratory service.

For custom configuration inquiries, comprehensive ancillary package quotes, or technical guidance regarding activated carbon testing protocols, contact our specialized engineering team today.

Trusted by Industry Leaders