Coke Reactivity and Post Reaction Strength Tester Type I Tumbler Drum

Product Overview

This standard-compliant tumbling apparatus is engineered specifically for assessing the mechanical degradation and post-reaction strength of metallurgical coke following high-temperature carbon dioxide gasification. Operating as a critical companion to coke reactivity index testing furnaces, the system mechanically tumbles reacted coke samples under strictly controlled rotational dynamics to determine the Coke Strength after Reaction index in compliance with GB/T 4000 standards.

Designed primarily for ironmaking facilities, coking plants, commercial metallurgical inspection laboratories, and academic coal research centers, the equipment provides decisive data on coke integrity under simulated blast furnace conditions. By evaluating how carbonaceous reduction agents resist impact and abrasion at elevated temperatures, quality control managers and furnace operators can optimize coal blending strategies, reduce operating costs, and prevent premature permeability loss in the blast furnace shaft.

Constructed from heavy-gauge, wear-resistant alloy steel and driven by a precision direct-coupled drivetrain, this mechanical tumbling unit guarantees unyielding operational stability and repeatable test cycles. Its heavy-duty chrome-plated exterior, versatile multi-angle orientation mechanism, and automated revolution control system deliver continuous, dependable performance across rigorous industrial testing schedules.

Key Features

• Standardized Test Execution: Fully compliant with GB/T 4000 test methodologies, utilizing an automated counting controller that executes a precisely timed 600-revolution sequence within 30 ± 1 minutes for uncompromised analytical repeatability.
• Heavy-Duty Wear-Resistant Drum Alloy: Built from high-strength Q345 (16Mn) structural steel with an integral 5 mm wall thickness, providing exceptional resistance against continuous surface abrasion and sample impact during mechanical tumbling.
• Precision Direct-Drive Powertrain: Features a 0.22 kW motor directly coupled to the rotating barrel, eliminating belt slippage, mechanical hysteresis, and drivetrain vibration to maintain a steady operational speed of 20 ± 0.5 r/min.
• Industrial Chrome Plating: The complete exterior surface of the tumbling cylinder undergoes comprehensive electro-chrome plating, delivering superior protection against laboratory corrosion, atmospheric oxidation, and mechanical scuffing.
• Fast-Action Threaded Barrel Cover: Equipped with an ergonomic, precision-machined quick-screw locking lid that seals securely to prevent fine particulate loss while allowing rapid, tool-free loading and clean sample discharge.
• Full 360-Degree Drum Orientation: Features an adjustable mounting mechanism allowing 360-degree horizontal rotation, enabling laboratory technicians to orient the barrel at optimal angles for ergonomics, loading, cleaning, and complete recovery.
• Modular Three-Section Architecture: Designed with independently configurable drum, controller, and support frame modules that can be combined as a compact standalone station or separated to accommodate specific workspace layouts.
• Low Standby Power Consumption: Controlled via an intelligent micro-electronic unit drawing less than 2 W in standby mode, featuring instant cycle reset, high-contrast digital tracking, and automatic motor braking upon cycle completion.
• Dual Global Electrical Configuration: Configured to support either three-phase AC 380V at 50Hz or AC 110V at 60Hz across four-wire or five-wire connections, accepting standard hard conductors or heavy-duty round flexible industrial cables.

Applications

In standard metallurgical testing, the mechanical tumbling cycle is an indispensable phase of the Coke Reactivity Index (CRI) and Coke Strength after Reaction (CSR) determination. After a dried 200 g coke sample of 23 mm to 25 mm sizing is reacted with pure carbon dioxide at 1100°C for two hours, the loss of sample mass yields the CRI percentage. However, gasification alone does not reflect blast furnace reality, where ascending reducing gases and descending burden generate massive abrasive and compressive forces.

The reacted sample is transferred into this tumbling drum, sealed securely, and subjected to exactly 600 revolutions at 20 r/min. The resulting tumbled product is extracted and sieved over a standard 10 mm round-hole screen. The mass percentage of coke remaining on the sieve defines the CSR value. Operating with tight rotational tolerances and certified cylinder geometry is mandatory, as minor deviations in rotational speed or wall friction directly skew CSR calculations, leading to erroneous furnace operating adjustments.

Technical Specifications

The dimensional parameters of the cylinder assembly on KT-TE40 adhere strictly to the boundary conditions mandated by standard testing protocols. The 700 mm interior length combined with an exact 140 mm outer diameter guarantees that coke particles traverse the intended parabolic lift-and-fall trajectory throughout the 30-minute tumbling process. The selection of thick-walled Q345 alloy steel eliminates the risk of drum bulging, internal rutting, or eccentric ovalization over extended operating schedules, ensuring that every sample experiences equivalent kinetic energy.

Electrical integration is straightforward across varied laboratory facilities. Whether powered by standard 380V three-phase regional grids or 110V industrial power systems, the direct-drive transmission maintains rotational stability without requiring external frequency inverters. The controller unit monitors rotation count via non-contact sensing, preventing mechanical switch failure and eliminating cumulative counting drift.

Why Choose This Product

• Certified Metallurgical Precision: Fully aligned with GB/T 4000 requirements, guaranteeing consistent, audit-ready CRI and CSR test results that eliminate discrepancy disputes between raw material suppliers and blast furnace plants.
• Superior Wear Resistance and Structural Integrity: Manufactured from heavy-gauge Q345 (16Mn) wear-resisting structural steel with complete chrome plating, preventing physical wear from sharp, high-hardness coke particles and providing years of trouble-free operation.
• Ergonomic and Adaptable Modular Engineering: The three-component architecture allows the drum, drive frame, and electronic console to be positioned in unified or split configurations, optimizing bench space and simplifying post-test sample recovery.
• Zero-Maintenance Direct-Drive Transmission: Replaces troublesome belts and pulleys with an efficient, direct-drive geared motor system that holds 20 ± 0.5 r/min precision without slippage, routine tensioning, or mechanical degradation.
• Rapid Locking and Dust Tight Operation: The precision-threaded closure system secures in seconds, preventing dangerous dust release into laboratory work areas while accelerating batch processing times for busy inspection teams.

Contact our technical application specialists today to request an official quotation, discuss regional electrical options, or integrate this precision tumbling system into your coking laboratory.

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