This section is from the "Henley's Twentieth Century Formulas Recipes Processes" encyclopedia, by Norman W. Henley and others.
In coating steel or other furnaces, first brush over the brickwork to be covered a solution made by boiling 1 pound each of silicate of soda and alum in 4 gallons of water, and follow immediately with composition:
Silica............. 50 parts
Plastic fire clay .... 10 parts
Ball clay.......... 3 parts
Mix well.
II.—For furnaces, etc.:
Pure silica (in grain) 60 parts
Ground flint....... 8 parts
Plaster of Paris..... 3 parts
Ball clay........... 3 parts
Mix well together by passing once or more through a fine sieve, and use in the same way as cement.
Paper is rendered fireproof by saturating it with a solution of
Ammonium sulphate. 8 parts
Boracic acid......... 3 parts
Borax.............. 2 parts
Water..............100 parts
For the same purpose sodium tungstate may also be employed.
A fireproof coating (so-called) consists of water, 100 parts; strong glue, 20 parts; silicate of soda, 38° Be., 50 parts; carbonate of soda, 35 parts; cork in pieces of the size of a pea, 100 parts.
I. — Ammonium sulphate, 70 parts; borax, 50 parts; glue, 1 part; and water up to 1,000 parts.
Solution of glue, 5 parts, zinc chloride, 2 parts; sal ammoniac, 80 parts; borax, 57 parts; and water up to 700 parts.
If the coating is to be made visible by coloration, an addition of 10 parts of Cassel brown and 6 parts of soda per 1,000 parts is recommended, which may be dissolved separately in a portion of the water used.
See Celluloid.
See Paper.
 
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