HTGJ-6 Coal Graphite Low Temperature Dry Distillation Tester

The Coal Graphite Low Temperature Dry Distillation Tester is an upgraded product developed by our factory. It is primarily used in coal mine laboratories, coal coking industries, and related teaching, research, and quality supervision institutions to analyze the physicochemical indicators of lignite and bituminous coal, such as tar yield, semi-coke yield, and distilled water yield.

The Gray-King low-temperature distillation test is a comprehensive multi-indicator experiment. It not only evaluates the caking property (coke type) but also measures the yields of semi-coke, tar, and total water from the distillation products. According to GB/T1341 “Gray-King Low-Temperature Distillation Test Method for Coal”, the basic principle involves placing a coal sample in a glass distillation tube, inserting it into a preheated furnace at 300°C, and heating it under anaerobic conditions at a rate of 5°C/min. The distillation temperature ranges from 300–600°C, with a 15-minute holding period. The yields of semi-coke, tar, and total water are measured, and the semi-coke is compared with standard coke types for classification.

Features:

1. Furnace Body: Cast from bronze alloy (5:2 copper-tin ratio) for balanced heating.
2. German Heating Rods: Arranged in series to ensure temperature variation <1°C and control accuracy <3°C.
3. Temperature Controller: Intelligent LED display.
4. Eight Cross-Arranged Heating Rods: Ensure uniform furnace temperature:
   1. Rods I & VIII: 0.45 kW
   1. Rods II & VII: 0.35 kW
   1. Rods III & VI: 0.30 kW
   1. Rods IV & V: 0.10 kW
5. Temperature Control Accuracy: ±1°C.
6. Four-Channel Heating: Simultaneously tests 1–4 samples.
7. Safety Protections: Leakage, power failure, and short-circuit protections.
8. Rated Power: Average 0.6 kW per heating hole (I: 0.65 kW, II: 0.53 kW, III: 0.56 kW, IV: 0.66 kW).
9. Power Supply: AC 220V±10%, 50 Hz.
10. Programmable Temperature Control: Time-based heating curves; built-in printer for data recording.
11. Alerts: Over-temperature alarm, buzzer notification, and automatic power-off with indicator light upon completion.

Technical Parameters:

1. Gray-King Distillation Furnace:
   1. Four-hole box-type resistance furnace
   1. Constant temperature zone ≥200mm
   1. Program-controlled automatic temperature regulation with minimal fluctuation
2. Distillation Temperature:
   1. Operating range: 300-600°C
   1. Maximum range: Room temperature to 800°C
3. Distillation Tube:
4. Made of heat-resistant glass
5. Conical Flask:
   1. Capacity: 250mL
   1. Equipped with ground joint for connection to moisture measuring tube
6. Moisture Measuring Tube:
   1. Range: 0-10mL
   1. Graduation: 0.05mL
   1. Ground joint design
7. Condenser:
   1. Straight-tube type
   1. Ground joint connection
   1. Condensing section length ≥300mm
8. Push Rod:
   1. Metal construction