The Assayers Manual An Abridged Treatise On the Docimastic Examination of Ore
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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.
What to read after The Assayers Manual An Abridged Treatise On the Docimastic Examination of Ore?
You can find similar books in the "Read Also" column, or choose other free books by Bruno Kerl to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
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.
What to read after The Assayers Manual An Abridged Treatise On the Docimastic Examination of Ore?
You can find similar books in the "Read Also" column, or choose other free books by Bruno Kerl to read onlineMoreLess
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