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Castable Refractories and the Salt Kiln

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Description: Includes articles "Some Thoughts on Refractories and Salt" by Tom Turner and "Notes on Castables for a Salt Kiln" by Richard Leach.
Castable Refractories and the Salt Kiln Copyright © 1975 by Studio Potter. All rights reserved. Some Thoughts on Refractories and Salt When one starts thinking of building a salt kiln and wondering about refractories, three things will determine the outcome. Refractories already available, finances available for purchasing new refractories and the intended lifespan of the salt kiln. At first I used whatever hard brick I could get my hands on and I coated the interior with alumina hydrate. This retarded the reaction between the bricks and the salt vapors, but eventually the salt won. Then I tried coating the interior with a high alumina cement that I trowelled on the surface, but again the salt won. More recently I've been involved with high alumina refractories that would hopefully resist sodium destruction. I much prefer making pots to building and repairing kilns. The chief disadvantage of high alumina refractories is their cost. A. P. Green Mizzou bricks are selling between $1.25 and $1.50 and the Mizzou castable is a little over $20.00 per 100 pound bag.
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