Two automatic technical methods and three different particle size reflectance results comparison chart.docSee the full text, please click to download

Two automatic technical methods and three different particle size reflectance results comparison chart

Coal and rock analysis system Note: The “multi-feature identification result” in the figure is the test result of MSP 9000C system of Liaoning Xiangyu Technology Co., Ltd. (Liaoning University of Science and Technology); “multi-point extraction result” is the result of ZEISS (ZEISS) MY6000A test; The national standard test is the result of arbitration and is used for comparison;

Figure 1 1# coal vitrinite group random reflectivity distribution map

Figure 2 2# coal vitrinite group random reflectivity distribution map

What is coal rock analysis

Coal is a solid combustible organic rock. Coal and rock science is the science of studying the material composition, structure, properties, genesis and rational utilization of coal by using coal as an organic rock. There are several ways to classify:

 Mirror coal

 The color of the mirror coal is dark black and strong, and it is the darkest color and the strongest gloss in coal.

 Mirror coal features:

 1 The texture is pure, the structure is uniform, with shell-like fractures and endogenous fissures. 2 mirror coal brittle, fragile into angular pieces. 3 In the coal seam, the mirror coal is often in the form of a convex lens or a strip, and the strip is several millimeters to 1 to 2 cm thick, and sometimes exists in a linear shape in the bright coal and the dark coal.

 The microscopic composition of the mirror coal is single, mainly due to the gelation of the woody microstructure of the plant.

 Properties: high V, H, strong adhesion, less mineral content

 2. Silk charcoal

 Appearance is like charcoal, the color is grayish black, with obvious fibrous structure and silky luster. The charcoal is loose and porous, brittle and brittle, and can be dyed. The cell of silk is sometimes filled with minerals, called mineralized silk charcoal. The mineralized silk charcoal is hard and dense, and has a large specific gravity.

 The amount of silk charcoal in the coal seam is generally small, often in the form of a flat lens. Under the microscope, the microscopic composition of the silk charcoal is also single, which is a simple coal rock component, mainly due to the lack of water in the plant lignocellulosic structure. Slow oxidation in an oxygen environment or due to a forest fire.

Features:

 1 In the coal seam, the silk charcoal is usually distributed along the bedding plane of the coal seam, and the thickness is between 1 and 2 mm to several millimeters, sometimes forming a discontinuous thin layer; in some areas, the thickness of the carbon layer can be Up to several tens of centimeters.

 2 The carbon fiber has a large porosity and a strong oxygen absorption, and the coal layer with more carbon carbon is prone to spontaneous combustion.

 Properties: compact and hard, high specific gravity, low H, high C, low V, non-adhesive, poorly selectable, and large pores.