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The manufacture of alum and the sulphates and other salts of alumina and iron; their uses and applications as mordants in dyeing and calico printing, and their other applications in the arts, manufactures, sanitary engineering, agriculture, and horticulture (1901)

Geschwind, Lucien · London : Scott, Greenwood & son; New York : D. Van Nostrand co. [etc., etc.] · leaf 259

An illustration from The manufacture of alum and the sulphates and other salts of alumina and iron; their uses and applications as mordants in dyeing and calico printing, and their other applications in the arts, manufactures, sanitary engineering, agriculture, and horticulture, 1901, leaf 259
AND SULPHATES OF IRON 237 Here it is washed three times in succession with saturated solutions of alum, the cleanest being used last, and is left to drain after each washing. The solution employed for washing … is obtained from the re-crystallising process, and contains 80 to 90 kilos. (175 to 200 lbs.) of alum per cubic metre (220 galls.), together with a little ferrous sulphate. When it has been used several times and becomes too impure to serve longer it is returned to the lixiviation tanks, where it…

Alum · Sulphates · Dyes and dyeing · Chemistry, Technical

Internet Archive · Harold B. Lee Library · Public domain (published before 1931). Free to use for anything.

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