Coke Reactivity Index and Coke Strength after Reaction CRI CSR Tester

Product Overview

This high-precision testing system is engineered to evaluate the Coke Reactivity Index (CRI) and Coke Strength after Reaction (CSR) in strict compliance with the GB/T 4000-2008 standard. Metallurgical coke quality is critical to blast furnace permeability, fuel efficiency, and overall ironmaking stability. By subjecting standardized coke samples to controlled carbon dioxide gasification at elevated temperatures followed by mechanical tumbling, this comprehensive analytical apparatus provides essential data to benchmark coke degradation under simulated blast furnace conditions.

Designed primarily for coking plants, integrated iron and steel complexes, metallurgical research institutes, and university laboratories, this equipment integrates a high-temperature vertical reaction furnace, a dedicated mechanical tumbler drum, a regulated gas distribution cabinet, and an intelligent microcomputer supervisory system. The apparatus empowers quality control and process optimization teams to accurately grade coal blends, optimize coking operations, and predict blast furnace burden performance.

Built for continuous industrial testing cycles, this testing assembly guarantees rigorous thermal uniformity and rock-solid mechanical reliability. Its heavy-duty high-alumina reaction zone, specialized silicon carbide heating elements, precision-engineered gas manifold, and fault-tolerant multi-tier architecture safeguard testing continuity even during communication interruptions, ensuring dependable data output in rigorous industrial environments.

Key Features

• Strict Standard Compliance: Fully aligned with GB/T 4000-2008 test requirements, providing definitive determination of coke reactivity index and post-reaction mechanical degradation for reproducible operational benchmarking.
• Precision High-Temperature Furnace: Reaches operating temperatures up to 1250°C using robust Ø18mm silicon carbide heating elements with an effective heating zone of 400mm, maintaining an exceptional ±2°C temperature tolerance throughout the mandatory 2-hour 1100°C isothermal stage.
• Optimized Thermal Architecture: Employs a dense high-alumina casing (inner diameter 140mm, outer diameter 160mm, height 640mm) paired with a matched vertical reaction chamber (inner diameter 80mm, height 500mm) to establish a uniform, stabilized thermal profile.
• Fast-Response Gas Manifold: Features an independent gas switching network operating at an ultra-fast 0.1s transition rate between nitrogen and carbon dioxide, preventing cross-stream pressure surges and ensuring precise atmosphere delivery.
• Heated Gas Conditioning: Includes a dedicated electrically heated CO2 pressure-reducing regulator and heavy-duty 1.5 MPa rated gas pipelines to eliminate fluid freeze-up and guarantee uninterrupted flow stability during the entire gasification process.
• Automated Mechanical Tumbler (Type I): Driven by an integrated electric gear motor, the monolithic drum rotates at a steady 20 ± 1 r/min, utilizing a heavy-gauge stainless steel drum (Ø140 × 700mm) with automated cycle counting, real-time digital revolution tracking, and non-volatile memory retention.
• Independent Supervisory Control: Employs dual-tier software and hardware isolation; even if the supervisory workstation disconnects, the onboard industrial microprocessor autonomously finishes the heating and gas profile without operator intervention.
• Real-Time Dual-Color Analytics: Software generates dynamic dual-color thermal curves to visualize temperature control quality and process progression, offering one-click BMP image export, historical run overlays, and standardized report generation.
• Integrated Gas Management Console: Houses secure mounting brackets accommodating a 6000ml gas buffer bottle, a 500ml wash bottle, and a 500ml desiccant drying tower to deliver dry, contaminant-free process gases.
• Networked Communication: Standard dual-core shielded twisted-pair cabling (2×0.52mm) with full TCP/IP compliance enables seamless integration into plant-wide supervisory control, data acquisition (SCADA), and laboratory information management systems (LIMS).

Applications

Technical Specifications

Why Choose This Product

• Uncompromising Process Precision: By integrating an intelligent PID controller calibrated to eliminate temperature lag, the unit holds the 1100°C reaction plateau within an exceptionally tight ±2°C band, eliminating thermal bias from your CRI and CSR metrics.
• Robust Heavy-Duty Build Quality: Constructed with an oversized 140/160mm high-alumina ceramic sleeve, heavy-duty stainless steel reaction hardware, and an integrated monolithic drum assembly, this system delivers dependable, multi-shift operation in demanding industrial labs.
• Failsafe Testing Reliability: Hardware-level manual overrides and an autonomous microprocessor safety routine ensure that power interruptions or computer software disconnects will not compromise, corrupt, or abort active high-temperature testing sequences.
• Integrated Turnkey Workflow: From custom heated gas pre-regulation to automated tumbling and direct TCP/IP network data reporting, this complete solution streamlines laboratory workflow while minimizing human handling errors.

Contact our technical engineering team today to request a quotation or discuss customized gasification and metallurgical testing solutions for your laboratory.

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