Coal Rock Training Lecture 2 - Zhao Junguo. Ppt See the full text, please click to download

Application examples of coal petrology in the field of coal char

The coal rock analysis method uses the microscope as the main tool to study the change law of coal or coke microstructure, so it is widely used in various fields related to coal or carbon, such as: coal seam exploration, coal genesis research, coal mining, coal Coking, coal liquefaction, coal water slurry, coal combustion, and even for the study of carbon materials. Here are some examples of applications in the field of coal char:

1. One of the applications: the use of vitrinite reflectance distribution to identify mixed coal;

2. Application 2: Supervise and control the incoming coal – stabilize the source of coke quality fluctuations;

3. Application 3: Evaluation and application methods of coal blended coal that cannot be completely eliminated;

4. Application 4: Control the coal yard sub-heap according to the coal-rock method – the intermediate link of stabilizing coke quality;

5. Application 5: Adjusting the distribution map of coal blending reflectivity – a powerful means to control the quality of coke;

6. Application 6: Guide coal procurement from the coal blending diagram – reduce production costs;

7. Application 7: Coal and rock blending and coke quality prediction;

8. Application 8: Coal rock selection is broken;

9. Application 9: Some other applications;

10. Application 10: Using the SmartScope coal-rock system to study the pore distribution of the block;

11. Application 11: Using the SmartScope coal and rock system to study the composition of coal and the optical composition of coke;

One of the applications: Identification of coal blends using vitrinite reflectance distribution

It is one of the most commonly used functions.

Basic principle: A single coal must be a single-peak normal distribution with a standard deviation of <0.1. When coals with different degrees of metamorphism are mixed together, multiple peaks will appear on the vitrinite reflectance distribution map, and the variance will also increase.

Coals with similar degrees of metamorphism may also have only one peak, but generally the deviation will increase slightly, but because coal is similar, it can be used as a single coal.

Single coal legend