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Coke CRI CSR Test system (HXFQ-2A Type Coke reactivity and post-reaction strength tester)

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Coke CRI CSR Test system (HXFQ-2A Type Coke reactivity and post-reaction strength tester)


Our company is the only manufacturing enterprise participating in GB/T4000-2008 Coke-Determination of Reactivity and Strength after Reaction.
This Coke CRI CSR Test system is used for determining the important performance of coke used for iron-smelting in blast furnace under the high-temperature----coke reactivity and post-reaction strength measuring apparatus. The whole set of instrument consists of special high-temperature reaction electric stove, computer control system, N2, CO2 gas supply case, Ⅰrotary drum automatic lift device,etc. Computer control system controls the high-temperature reaction electric stove to rise temperature according to fixed rate and control temperature according to designated temperature, many kinds of pictures of change can be intercepted on the screen of the computer in the course of reacting of coke, and confirm the whole course of reaction of coke, meanwhile store the data of numerous experiment, also equipped with automatic lifting, waste gas automatic burning and discharging equipment, which achieves the automatization of the experiment course. The whole set of instrument accords with the technical requirement for GB/T4000-1996, being the essential apparatus for testing coke quality and studying coke performance in the coking plant, steel plant, foreign trade department, R&D institution, universities and colleges.patent number: ZL201020109912.X
1、Measuring principle
A 200±0.5g sample of prepared and dried coke (25mm ≥ particle size ≥ 23mm) is placed in a specially designed reactor and heated up to 1100℃. The coke reacts with carbon dioxide for 2 hours at 1100±5℃. The weight loss percentage of the coke is known as the reactivity (CRI).
The reacted coke is placed in an I-type drum. The percent of material removed from the drum that is +10mm is known as the coke strength after reaction (CSR).
2、Main technical performance
2.1 Fully comply with GB/T4000-2008 Coke-Determination of Reactivity and Strength after Reaction.
2.2 Heating wire, constant temperature area that is +150mm
2.3 Reactor material uses high temperature alloy steel GH23 or GH44.
2.4 The whole test process is highly automated and controllable.
2.5 Use special automatic electromagnetic cut-off valve for gas control and high accuracy flow meter for flow control. The computer may automatically switch between nitrogen and carbon dioxide.
2.6 With integrated electric and gas circuit, the controller is easy to use, reliable and maintenance-free. Experimental data and temperature curves may be saved and displayed.
2.7 Alarm on over-temperature caused by SCR breakdown, thermocouple damage and signal interference, etc. Automatic power-off in the case of over-temperature to prevent burnout of furnace, thermocouple and reactor and protect and extend their service life.
3、Main Function Requirements of Control Software System
3.1 Full software operation control and full hardware isolation control;
3.2 Automatic drawing interface of two-color real-time curves and direct curve display of temperature control quality and variable heating process;
3.3 Real-time curves and pictures may be screenshot and saved in BMP format and saved in the form of graphic data, and historical curve graphics may be called at any time for comparative analysis;
3.4 Equipped with administrator password and operator password logging-in mechanism to prevent unauthorized persons operating system or modifying data;
3.5 Support all related data reports that are available on request at any time for query;
3.6 All data are saved in the computer hard disk as exclusive data groups, and they may be permanently saved as long as the capacity is sufficient;
3.7 Equipped with PID adjustment interval for large temperature lag to enable excellent temperature control accuracy indicators;
3.8 PID parameters may be modified online and saved automatically and permanently;
3.9 Intelligent judgment ability of faults or operational errors, and protection function to guarantee the life of important hardware;
3.10 Unique sustainable protection, once you enter the process curve flow, the experiment will be automatically completed even if the computer and controller are out of any contact;
3.11 Full hardware manual control, independent manual operation based on the habits of operators;
3.12 Hardware and software dual automatic and manual conversion, flexible application according to needs;
3.13 The controller is equipped with automatic air cooling system, intelligent temperature judgment, low noise;
3.14 Non-periodical free software update
4、Main Technical Parameters
4.1 Technical indexes of temperature controller
Temperature control process: room temperature~1100℃, heating-up time according to requirements of GB; maintain constant temperature of 1100℃ for 2h;
Temperature control accuracy: constant temperature of 1100℃, accuracy: ±2℃
4.2 Technical indexes of flow controller
Fully independent switch (manual and automatic) between CO2 and N2, switching rate of 0.1s; controlled by computer in automatic mode; manual operation in manual mode;
Flow range: 5.0L/min (CO2); 0.8~2.0L/min (N2);
Accuracy: ±1.0%FS
4.3 Main technical indexes of high temperature reaction furnace
Movable, stainless steel enclosure, special high temperature reaction furnace (split type);
High-aluminum casing: 140mm (internal diameter), 160mm (external diameter), 640mm (height);
Working temperature: 1250℃ (MAX);
Electric power: 10kw (MAX);
Constant temperature maintenance power: 3-5kw;
OCr27A17Mo2 furnace wire
4.4 Technical indexes of coke strength after reaction tester
The I-type drum consists of drum body, motor, reducer and rack. It is of integrated structure. The controller may predict and control revolution and is capable of automatic memory and screen real-time digital display.
The drum rotation speed is 20±1r/min, the body is made of seamless steel tubes of Φ140×700mm (length), and it is equipped with a special motor.
4.5 Characteristics of furnace accessories
Reactor: 80mm (internal diameter), 500mm (height)
Thermocouple: Φ8mm (external diameter), core: Φ0.5mm×650mm
4.6 Characteristics of gas line
Withstand pressure: 1.5MPa
Equipped with CO2 dedicated electric heating gas pressure reducer
4.7  Communication characteristics
Communication line: twisted-pair shielded cable of 2x0.52mm
The analysis results may be uploaded directly to a superior network system, in line with TCP/IP protocol
4.8  Gas cabinet
Built-in gas cylinder holder that may hold surge flask of 6000ml, gas washing bottle of 500ml and drying tower of 500ml