Product Introduction of Coal Firmness Coefficient Determination Device
Used to determine the physical and mechanical properties (strength f) of coal, which is one of the important indicators for assessing the risk of coal mine outbursts.

Coal Firmness Coefficient Determination Device Applicable Conditions
1. Operating ambient temperature (°C): -5 to 35
2. Operating relative humidity (%): ≤90
3. Atmospheric pressure (kPa): 80 to 110
4. Determination of the firmness coefficient of lignite, bituminous coal, and anthracite
5. In environments without damaging metal insulation
Main Technical Indicators
1. Determination time: <1h
2. Crushing cylinder
Hammer operating height: 600mm
3. Electronic balance
Maximum capacity: 3000g
Sensitivity: 0.1g
Stabilization time: <3S
Power supply voltage: 220V (+10% to -15%)
Power: 5W
4. Hammer
Cylinder height: 90mm
Weight: 2.4Kg
5. Measuring cylinder
Piston ruler operating length: 160mm
Piston ruler scale length: 160mm
Piston ruler scale accuracy: 1mm
6. Sample sieve
Round hole aperture: 20mm, 30mm, with base
Round hole, square hole aperture: 1mm (square hole), 3mm (round hole), with base
Square hole aperture: 0.5mm, with base
7. Funnel
Capable of loading coal samples with particle size less than 0.5mm into the measuring cylinder
8. Container
Capable of holding 50g of coal samples with particle size 20-30mm

Zhengzhou Aidi produces Coal Firmness Coefficient Determination DeviceSupplies coal drill cuttings desorption instrument, deep hole sampling device, pressure measuring instrument, geological exploration desorption instrument, borehole flow meter, mine extraction and outburst prevention equipment, coal true density determination instrument, gas content determination instrument, automatic initial gas emission rate determination instrument, diffusion rate determination instrument, coal extraction pipeline gas parameter instrument