2014年7月12日星期六

Refractory material for lime kiln

There are many kinds of main shaft kiln, lime kiln, rotary kiln and annular kiln etc… Most of the countries with the shaft kiln production of lime; the lime requirement is large, using rotary kiln.
Lime shaft kiln feed around the mouth and pre tropical lining of the body temperature is low, fire brickmainly due to mechanical impact material and wear, can choose the dense clay brick masonry. Calcined lime kiln lining body, subjected to chemical erosion wear, material flow and CaO at high temperature, rapid damage. For the small shaft kiln, generally used in low porosity and high alumina brick and illuminate brick; for large shaft adopt magnesia chrome brick, magnesia brick, magnesia spinel brick and brick for burning zone lining of the body.
Lime shaft kiln cooling zone and a lining material around the mouth, using the temperature is relatively low; damage reason is lime wear and alternating hot and cold induced temperature difference, the site selection of high – strength of clay brick masonry.

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