Dual Furnace Fully Automatic Coke Reactivity Index and Coke Strength After Reaction Determination Apparatus

Product Overview

This dual-furnace fully automatic coke reactivity and post-reaction strength testing system provides an integrated, high-precision analytical solution for determining the Coke Reactivity Index (CRI) and Coke Strength after Reaction (CSR). Engineered to satisfy and exceed the rigorous test parameters of international and national metallurgical testing standards, including GB/T 4000-2017 and BS ISO 18894:2006, the apparatus features twin independent furnace chambers powered by high-durability embedded heating elements designed for continuous industrial operations exceeding 2,000 thermal cycles.

Primarily deployed in steel manufacturing facilities, merchant coking plants, carbon material research centers, and third-party commercial inspection laboratories, this system facilitates high-throughput metallurgical coke evaluation. Each furnace functions either independently for diversified batch processing or synchronously to maximize testing volume, providing actionable metallurgical data to optimize blast furnace coke charge performance and raw coking coal blend efficiency under tight production schedules.

Engineered with fail-safe operational integrity, the unit incorporates an automated ball screw mechanical elevator, dual-line gas switching manifolds, and integrated safety exhaust incineration. Operators gain complete test repeatability under demanding thermal environments up to 1250°C, backed by comprehensive hardware-level over-temperature and over-pressure protections that safeguard laboratory personnel and maximize long-term equipment uptime.

Key Features

• Dual Independent Furnace Architecture: Configured with two fully autonomous heating furnaces capable of parallel or independent operation, this design doubles testing throughput and allows simultaneous evaluation under identical or staggered schedules.
• Three-Zone Precision Isothermal Control: Each furnace chamber integrates three independently managed heating zones driven by S-type Industrial Class II thermocouples, establishing an extended constant temperature zone exceeding 300 mm that surpasses GB/T 4000 and ISO 18894 requirements.
• Dual-Line Gas Switching and Redundancy: The gas supply configuration utilizes an automated primary-and-backup arrangement for both nitrogen and carbon dioxide, switching automatically to reserve gas cylinders within 10 seconds should line pressure drop, ensuring uninterrupted reaction chemistry.
• Automated Ball Screw Manipulator: Smooth, high-precision bottom-loading mechanical transmission powered by an industrial-grade ball screw delivers hands-free furnace entry and post-test vessel extraction, eliminating manual thermal exposure.
• Advanced Mass Flow Regulation: Equipped with precision digital mass flow controllers (MFC) calibrated to ±1.5% full-scale accuracy across a 0–10 L/min range, the apparatus maintains absolute stoichiometric consistency and renders real-time flow tracking curves.
• Integrated Exhaust Gas Incineration and Ventilation: An automated ventilation loop initiates immediately upon test startup, channeling carbon monoxide effluents into a combustion zone before outdoor venting to protect laboratory staff and ensure air safety.
• Comprehensive Multi-Tier Hardware Protection: Redundant safety circuits guard against thyristor (SCR) breakdown, controller failures, over-pressure events, and thermal runaway, preventing structural damage to the heating elements, GH3044 superalloy reactor, or ceramic insulation.
• Automated Cycle Management and Cooldown Notification: Industrial PLC logic executes the entire thermal ramping, CO2 preheating, atmosphere changeover, and reactor unloading sequence automatically, triggering an acoustic alarm once coke reaches 100°C to initiate the tumbling stage.
• Integrated I-Type Tumbler Drum: The companion I-type mechanical tumbling apparatus features automatic rotation tracking at 20 ± 0.5 rpm up to exactly 600 cycles, enabling direct charge and discharge without requiring drum disassembly.
• High-Purity Gas Enhancement Capability: Supports an optional secondary gas purification module that upgrades standard-grade industrial CO2 and N2 feedstocks to high-purity testing gases (~99%), significantly reducing ongoing laboratory operating overhead.

Applications

Technical Specifications

Why Choose This Product

• Engineered for High Industrial Availability: With embedded heating elements rated for over 2,000 runs and dual-line automatic gas failover within 10 seconds, this system eliminates catastrophic test interruptions and unplanned laboratory downtime.
• Full Dual-Standard Compliance: Designed strictly to satisfy both GB/T 4000-2017 and BS ISO 18894:2006, the unit delivers an extended constant temperature zone (>300 mm) and includes tailored sieve choices for domestic and global compliance.
• Uncompromising Personnel Safety: Comprehensive health and safety engineering—including automatic CO exhaust incineration, automated bottom-loading ball screw extraction, and dual hardware-level runaway protections—creates a secure testing environment.
• Complete Testing Automation: From multi-zone ramping and gas stoichiometry transitions to post-test vessel emergence, 100°C acoustic prompts, and automated 600-revolution tumbling, manual operator touchpoints are dramatically reduced.
• Data Integrity and Traceability: Full PC integration provides continuous visualization of upper, middle, and lower furnace zones alongside gas mass flow metrics, automatically archiving comprehensive datasets for regulatory reporting and audit readiness.

Contact our technical engineering team today to request a detailed technical proposal, schedule an application consultation, or discuss custom laboratory integration options.

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