The book An Elementary Text book of Metallurgy was written by author Alexander Humboldt Sexton Here you can read free online of An Elementary Text book of Metallurgy book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is An Elementary Text book of Metallurgy a good or bad book?
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This method, which was first proposed by Plattner, consists in treating the ore with free chlorine, which converts the gold into gold chloride ; this being soluble, can be dissolved out in water, and the gold can be precipitated from the solution by any of the 14 210 ELEMENTARY METALLURGY. usual means. It is only applicable to the direct treatment of free- milling ores, refractory ores requiring a preliminary roasting. The Plattner Process. The apparatus required consists of a chlorinating vat,... a chlorine-generating apparatus, a settler, and a precipitating vat. The chlorinating vat is a tub, about 7 feet in diameter and 3 feet deep. It is provided with a perforated bottom about 1 inch above the real bottom ; on this is laid a filter bed of pebbles, 6 inches or so in thickness ; and over this a thin wooden disc, fitting tightly and perforated with a large number of small holes, or a filter cloth stretched tightly over a well-fitting wooden frame. There are two pipes leading to the space Fig.
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