Combustion Chars C12 | Petrographic Atlas | SIU

Southern Illinois University



Crelling's Petrographic Atlas of Coals and Carbons

College of Science



Frame ID: C12

Sample ID: Coal Combustion Char

Magnification: As given

Illuminator: Vertical

Objective: 50x oil

Polarizer: In

Analyzer: Out

Retarder Plate: Out

Filter: None

Important Features: Fusinoid Char

High Res image (300 dpi)

Description: : The object in the center of the field is a typical fusinoid char. It is characterized by its irregular shape and cell texture derived from original plant structure. 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.