TT-JD22HA-01Dual Furnace Bottom-loading Reactivity Determinator
I. Product Introduction:
Our companyCoke ReactivityThe coke reactivity and post-reaction strength testing device is designed based on GB/T4000-2017 "Test Method for Coke Reactivity and Post-Reaction Strength", and is available in various models such as top-loading single furnace and bottom-loading dual furnace. The equipment has a high degree of automation, stable test data, and solves the key factors affecting the accuracy of coke reactivity data: ① Sufficient length of dynamic constant temperature zone; ② Accurate gas flow rate; ③ Consistency of coke ball specific surface area.
This system is suitable for the determination of coke reactivity and post-reaction strength.
II. Product Function:
The thermal reactivity and post-reaction strength of coke are important indicators of its high-temperature metallurgical performance. Coke with good reactivity can promote indirect reduction in the upper part of the blast furnace and release a certain amount of heat, which helps reduce the coke ratio. Coke with poor reactivity causes excessive direct reduction in the lower part of the blast furnace and absorbs a large amount of heat, leading to an increase in coke ratio and higher blast furnace smelting costs.
The post-reaction strength index of coke directly reflects whether the coke can still play a skeleton supporting role under the huge pressure of the material column in the lower part of the blast furnace. Therefore, the test of coke thermal reactivity and post-reaction strength is an important means to inspect coke quality and can provide important production operation basis for the blast furnace smelting process.
III. Technical Features:
1. All adopt three-stage temperature control as required by the latest national standard, with dynamic constant temperature zone ≥300mm, far exceeding the 150mm required by the national standard, resulting in more stable data.
2. Adopts new type of thermal insulation furnace lining, reducing energy consumption by over 30%. The heating wire is imported from Sweden, with a lifespan of over 1000 furnaces, meeting the need for frequent replacement within one year. The furnace chamber adopts a three-segment structure, and the upper, middle, and lower segments can be replaced individually, greatly reducing spare parts cost.
3. Adopts Siemens PLC (S7-200SMART) control system from Germany, with high reliability, strong anti-interference capability, and stable operation.
4. High-temperature resistant alloy reactor made of high-temperature alloy steel, with a service life of over 100 furnace runs (most other brands are 30-50 furnace runs). It can reduce consumable material costs by ¼.
5. Uses high-precision (Horiba) mass flow controllers for gas, with monitoring and alarm for both high and low pressure. The dual-furnace equipment has the function of automatically switching to another gas cylinder when gas pressure is insufficient. Even under unattended conditions, it can ensure normal operation of the equipment.
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:
4.1 Control Instrument Parameters
TT-JD22HA-01Dual furnace bottom-loading reactivity determinator is designed and manufactured in accordance with the national standard GB/T4000-2017 "Test Method for Coke Reactivity and Post-Reaction Strength", and is equipped with automatic reactor extraction and lifting system on this basis.
Equipment dimensions: length × width × height = 1600×850×2200mm
Gas flow control parameters: 0-10L/min
CO2Maximum gas flow rate: 10L/min
N2Maximum gas flow rate: 10L/min
Flow control accuracy: ±2% FS
Flow control linearity: ±0.5% FS
Flow meter pressure resistance: 1MPa
Gas pipeline pressure resistance: 1MPa
Rated voltage: AC380V, 50Hz
Power regulation method: SCR voltage regulation for temperature control
Noise: approximately 40-45dB during air cooling operation
Thermocouple: Φ12mm×650mm
CO2Heating valve power supply: AC220V/50Hz, 120W (automatic control)
4.2 Reaction Furnace Parameters
The furnace body is made of cold-rolled steel plate with plastic-sprayed shell structure. Due to the use of integral furnace lining, its physical properties are effectively improved, ensuring product consistency.
The furnace chamber is embedded with high-temperature alloy heating wires, vertically and evenly distributed on the inner wall. This deep U-shaped groove structure prevents the heating wire from slipping out easily whether in cold or hot state, thereby extending the service life of the wire.
The specially designed temperature control circuit independently developed makes the temperature control error better than the value specified by the national standard.
Adopts fuzzy PID temperature control algorithm, which can effectively resist external electromagnetic interference, ensuring excellent stability throughout the temperature control process.
Furnace body dimensions: 610mm×610mm×740mm
Furnace chamber dimensions: Φ360mm×Φ160mm×570mm
Electric power: single furnace full load power 6kw, dual furnace 12kw
Heating wire: high-temperature alloy material, wire diameter Φ1.5mm
Reactor: inner diameter 80mm, height 500mm, material GH44
4.3 Post-Reaction Strength Tester
Type I drum: rotation speed 20±1.5 rpm, test revolutions 600 revolutions
Drum control instrument dimensions: length × width × height = 320×240×1500mm
Rated voltage: AC220V/50Hz
Rated maximum power: 0.2kw
Digital display: real-time digital display
Compared with the previous D22, this new product has more stable temperature and gas flow control, and comes with a touch screen to replace traditional buttons and digital display, making parameter setting more convenient, and also supports intelligent lifting..
