Difference between revisions of "Calciner Dryers"

They are very similar in design to rotary dryers, except that much higher temperatures are involved. Again these may be directly heated or  indirectly, depending upon the specific application.

==='''Directly Heated Calciners''' ===

The refractory lined rotating shell has no  lifting flights. Forward flow of the material is effected by the slope  and rotation of the shell. Located at the discharge end, a gas or oil  burner enables temperatures up to 1650°C to be achieved. For certain  applications, the atmosphere within the kiln can be controlled to give  oxidising, or slightly reducing conditions.

==='''Indirectly Heated Calciners'''===

Based on the design of the indirectly heated  rotary dryer, the calciner is capable of operating at temperatures of 1100°C. Typical applications include: nickel catalysts; carbon  regeneration, molecular sieves and china clay.

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