Temperature: 370-950C

Description:Carbon / iron oxidation
Type:State Change


Lignite and lignite contained particles are burned away. Lignite is more difficult to remove than low temperature organics. Sometimes black particles (from ball clays, for example) can remain even after bisque temperature at 1800F (980C). While these might burn readily on their own, when buried in the matrix of a clay body time is needed to fully oxidize them.

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  • (Temperatures) Organic burnout (250C-370C)

    Organics are literally burned out during first fire of ceramic bodies. Ball clays often contain significant organic material (the lignite imparts thei...

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