Fully Automatic Caking Index Tester for Coal Metallurgical Quality Analysis

Product Overview

This fully automatic analytical station integrates the critical sample preparation and physical determination stages required for coal caking index evaluation into a single, cohesive laboratory workstation. Designed to eliminate manual inconsistencies inherent in multi-step coal testing, the equipment executes mechanical sample mixing, standardized static pressing, and abrasive drum determination under strictly regulated operational conditions. By combining these essential analytical functions within a rugged benchtop footprint, the instrument provides an efficient, highly reproducible testing solution that substantially elevates data integrity and streamlines testing protocols in demanding coal assessment environments.

Engineered specifically to support the rigorous quality requirements of metallurgical coke manufacturing, commercial coal washing facilities, thermal and steel power plants, and independent third-party analytical laboratories, this instrument delivers decisive insights into coal thermoplastic characteristics. It provides accurate evaluation of coal colloid formation, plastic mass expansion, and mechanical bonding performance when mixed with standard anthracite substrates in accordance with established national testing standards. Whether evaluating raw pithead coal or certified blended coking feeds, the system delivers immediate, dependable determination of the caking index required to predict blast furnace coke stability.

Built for continuous duty in high-throughput industrial testing facilities, the unit is constructed with precision-machined mechanical drive linkages and digital timing controllers that deliver consistent physical parameters test after test. Both the sample stirring module and the drum testing mechanism feature independent drive assemblies, permitting simultaneous or standalone operation without cross-vibrational interference. This robust electro-mechanical architecture ensures high operational reliability, minimal routine maintenance, and uncompromised measurement precision under demanding industrial testing schedules.

Detail & Parts

Key Features

• Three-in-One Comprehensive Architecture: This system merges crucible sample stirring, calibrated static pressure compacting, and automated drum determination into a unified benchtop enclosure, consolidating separate laboratory preparation devices into a single streamlined footprint that conserves valuable workspace.
• Independent Subsystem Control: Built with decoupled dual-channel electronic control circuitry, the sample preparation mixing station and the rotating determination drum can function simultaneously or completely independently, optimizing daily analytical throughput without reciprocal mechanical or electrical interference.
• Strict Standard-Compliant Stirring Geometry: The sample preparation module incorporates a dedicated 45-degree crucible tilt angle combined with a synchronized 15 r/min crucible rotation and a 150 r/min counter-acting stirring blade, guaranteeing thorough, uniform encapsulation of anthracite grains by fine caking coal particles.
• Automated Two-Stage Mixing Cycle: A pre-programmed automated timer manages the sample mixing sequence by running the inclined 45-degree blending phase for precisely 1 minute and 45 seconds before executing an automatic 15-second return transition to the vertical position, eliminating human operational timing errors.
• Calibrated 6.5 kg Static Pressing Assembly: Prior to carbonization roasting, the integrated static pressing unit applies a nominal compaction load of 6.5 kg directly onto the prepared coal mixture, effectively preventing volatile sample entrainment and thermal mass loss induced by furnace convection currents.
• High-Precision Motorized Drum Drive: The determination station features a precision-governed drive motor that rotates the abrasion test drum at a strictly regulated 50 ± 2 r/min, ensuring exact kinetic impact and abrasive degradation during mechanical strength evaluation.
• Digital Tube Counter and Preset Logic: An integrated digital tube display continuously tracks drum revolutions against a factory-preset 250-revolution target, providing instantaneous visual feedback and automatically halting the rotation upon cycle completion.
• Audible Cycle-End Acoustic Buzzer: An integrated high-decibel audible buzzer automatically alerts laboratory technicians as soon as the test cycle finishes, freeing technicians to manage secondary benchtop tasks while maintaining strict compliance with operational timelines.
• High-Efficiency Low-Power Drive: Requiring approximately 40W of total operating power from a standard 220V 50Hz single-phase electrical supply, the unit operates with exceptional thermal efficiency and minimal electrical draw while supporting continuous industrial shifts.

Applications

Technical Specifications

Operational Process Overview

The analytical cycle executed by KT-TE25 follows a standardized three-stage metallurgical sequence. In the stirring stage, pulverized coal samples are mechanically combined with standard anthracite in a crucible tilted at 45°. The synchronized 15 r/min crucible rotation and 150 r/min rod rotation guarantee that fine caking coal particles thoroughly coat the coarser anthracite grains. In the static pressing stage, a calibrated 6.5 kg deadweight load is applied to compact the mixed charge prior to high-temperature carbonization roasting. This compaction step prevents volatile loss caused by high-velocity gas convection in laboratory roasting furnaces. In the determination stage, the roasted coke residue is subjected to standardized kinetic abrasion inside the determination drum at 50 ± 2 r/min for exactly 250 revolutions, allowing precise measurement of coke abrasion resistance to establish the caking index.

Why Choose This Product

• Rigorous Standard Compliance & Measurement Repeatability: Fully engineered in accordance with GB/T 5447-2014, this instrument eliminates the variability of manual coal stirring and inconsistent static loading, delivering highly reproducible caking index measurements across consecutive laboratory shifts.
• Decoupled Dual-Station Productivity: Unlike single-function or mechanically coupled testers, the independent electronic and drive architecture enables simultaneous sample preparation and drum abrasion runs, virtually doubling sample throughput in high-volume industrial laboratories.
• Robust Industrial Build Quality: Built with heavy-gauge internal structural components, wear-resistant mechanical linkages, and sealed digital electronics, this unit resists continuous abrasive coal dust exposure, ensuring extended service life and minimal preventative maintenance overhead.
• Exceptional Energy Efficiency and Compactness: Drawing approximately 40W while integrating three distinct testing steps into a unified, bench-saving footprint, the equipment lowers laboratory utility demands and optimizes workspace without compromising analytical rigour.

Contact our technical specialists today to request a comprehensive quotation, explore customized laboratory workflows, or discover how this integrated testing station can elevate your metallurgical coal evaluation standards.

Trusted by Industry Leaders