C21

Frame ID: C21
Sample ID: Coal Combustion Char
Magnification: As given
Illuminator: Vertical
Objective: 50x oil
Polarizer: In
Analyzer: In
Retarder Plate: In
Filter: None
Important Features: Char Rank Series
High Resolution Image (300 dpi)

Description: This anisotropic char is from a high volatile bituminous coal with a reflectance of 0.87% (mean max in oil). Note the fine-grained mosaic texture. This char was produced in an entrained flow reactor in nitrogen with a heating rate of 104-105 degrees C per second with a residence time of approximately one second at a maximum temperature of 1000 degrees C.