TT-F3 Model Coke Reactivityand Post-Reaction Strength Testing Apparatus
I. Product Introduction:
Our company's coke reactivity and post-reaction strength testing apparatus is designed based on GB/T4000-2017 "Test Method for Coke Reactivity and Post-Reaction Strength". It is available in various models including top-loading single furnace and bottom-loading dual furnace. The equipment features a high degree of automation and stable test data, addressing key factors affecting the accuracy of coke reactivity data: ① Sufficient constant temperature zone; ② Accurate gas flow; ③ Consistency of coke ball specific surface area.
II. Product Function:
Coke thermal reactivity and post-reaction strength are important indicators of coke performance at high temperatures in metallurgy. Coke with good reactivity enables indirect reduction in the upper part of the blast furnace and releases a certain amount of heat, which helps reduce the coke ratio. Coke with poor reactivity causes excessive direct reduction in the middle and lower parts of the blast furnace, absorbing a large amount of heat, thereby increasing the coke ratio and the cost of blast furnace smelting.
The post-reaction strength index of coke directly reflects whether the coke can still play a supporting role in the skeleton under the huge pressure of the material column in the middle and lower parts of the blast furnace. Therefore, the detection tests of coke thermal reactivity and post-reaction strength are important means to inspect coke quality and provide important production operation basis for the blast furnace smelting process.
III. Technical Features:
1. All adopt the latest national standard three-stage temperature control, with a dynamic constant temperature zone ≥ 300mm, far superior to the 150mm required by the national standard, ensuring more stable data.
2. Use new type insulation furnace lining, reducing energy consumption by more than 30%. The heating wire is imported from Sweden, with a lifespan of over 1000 furnaces, meeting the needs of frequent replacement for one year. The furnace chamber adopts a three-stage design, and each of the upper, middle, and lower sections can be replaced individually, greatly reducing spare parts costs.
3. Adopt Siemens PLC (S7-200SMART) control system from Germany, featuring high reliability, strong anti-interference ability, and stable operation.
4. High-temperature alloy steel processed high-temperature resistant alloy reactor, with a service life of over 100 furnace cycles (most other brands only achieve 30-50 cycles). This can reduce the consumable material cost of the equipment by 1/4.
5. Gas uses high-precision (Horiba) mass flow controllers with monitoring and alarm for both high and low pressure. Dual furnace equipment has the function of automatically switching to another cylinder when gas pressure is insufficient. Even under unattended conditions, the equipment can operate normally.
6. The test furnace uses a single three-core thermocouple for temperature measurement, monitoring the temperature of the heating element and the upper, middle, and lower sections of the sample in real time.
IV. Technical Parameters:
Gas Flow Control
1. Automatic switching between CO2 and N2, automatic flow adjustment. Fully automatic gas flow and gas switching, fully automatic carbon dioxide heating;
2. Gas flow calibration: Default standard calibration; Maximum flow: 10L/min [CO2]; 10L/min [N2];
3. Response time: Gas characteristics: 1-2s; Electrical characteristics: 1s;
4. Pressure resistance: 1MPa;
Temperature Control Cabinet
1. Heat dissipation method of controller: Air cooling (built-in intelligent fan), quasi-silent mode;
2. Noise: During air cooling operation: approx. 40-45dB, When air cooling stops: 0dB;
3. Temperature control range 0℃-1150℃, accuracy 0.5 level;
4. Fully automatic temperature control, intelligent fuzzy PID algorithm to improve temperature control accuracy;
5. Operating voltage: AC 380V ±10%;
6. Total power: ≤12KW;
7. Maximum control temperature: 1150℃;
8. Furnace temperature control accuracy: ±1℃;
9. Control method: Computer control;
10. Controller dimensions: W×H×D = 600×1600×600mm;
11. Controller weight: ≤40kg.
High Temperature Heating Furnace
1. Furnace body material: 304 stainless steel;
2. Furnace body dimensions: Φ600mm×850mm;
3. Furnace lining material: Zirconium-containing ceramic fiber;
4. Furnace lining dimensions: Φ360mm×Φ160mm×760mm;
5. Maximum heating temperature of heating element: 1200℃;
6. Thermocouple: Rhodium-platinum thermocouple (Type S);
7. Heating furnace power supply: AC380V ±10%;
8. Total power: ≤12KW;
9. Constant temperature zone range: When the furnace chamber maintains temperature at 1100±5℃, the axial constant temperature zone of the furnace chamber ≥200mm;
10. Lifting device travel: 700mm; Lifting device load capacity: not less than 20kg;
11. Total weight of furnace body: ≤180kg.
Sieve
Round hole sieves: Φ10, 23mm, 25mm.
I Type Drum
1. Rotation speed: 20r/min±1r/min;
2. Drum controller: Total revolutions 600r, time 30min±1min;
3. Drum body: Made from seamless steel pipe with outer diameter 140mm, thickness 5mm-6mm. Net length of drum 700mm, drum cover thickness 5mm-6mm;
4. Real-time digital display;
Computer Control
1. Fully automatic control;
2. Supports user programming. Especially suitable for research tests of this project;
3. Self-diagnosis function. Can automatically judge common system faults, issue alarms and corresponding error prompts.
