The Assayers Manual An Abridged Treatise On the Docimastic Examination of Ore
The book The Assayers Manual An Abridged Treatise On the Docimastic Examination of Ore was written by author Bruno Kerl Here you can read free online of The Assayers Manual An Abridged Treatise On the Docimastic Examination of Ore book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Assayers Manual An Abridged Treatise On the Docimastic Examination of Ore a good or bad book?
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Idria: 3 140 grammes of ore, with two or three spoonfuls of powdered lime, are placed in iron distilling tubes of about 52 millimeters diameter, lying in two rows, one above the other, on each side of a furnance. The receivers are luted on, and the process is finished when the tubes show a bright-red heat. The loss of mercury is considerable. 4 Hungarian mercurial tetra- hedrite: 5 The ores are heated with the same quantity of iron 1 B. U. H. Ztg. 1854, p. 394 (Idra). 2 Muspratt's Chem. V. 1296.... Mohr, Titrirmethode, 1874, pp. 236, 318, 441, 438. a B. U. H. Ztg. 1854, p. 394. 4 B. U. H. Ztg. 1854, 357. 3 B. U. H. Ztg. 1866, pp. 24, 262. 238 ASSAYING. turnings roasted ore at the same time with an equal quantity of lead oxide 1 in glass retorts resting upon clay dishes. The neck of the retorts, when the operation is finished, are broken off by a blow, and the mercury is removed by means of a wiper of rabbit fur. It is then collected into a globule and weighed. Rose's niethod : A body of magnesite (or chalk with an equal quantity of sodium bicarbonate), 26 to 52 millimeters long is introduced into a glass tube, closed at one end, and measuring 314 to 470 millimeters in length, and 9 to 13 millimeters in width.
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