A Practical Treatise on Metallurgy: Adapted from the Last German Edition of Prof. Kerl's Metallurgy, Volúmenes1-2Longmans, Green, and Company, 1868 |
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Página 30
... above the other ; the flame of the lower being conducted over the upper one . Figs . 5 and 6 will serve to explain the general form and construction FIG . 5 . FIG . 6 . b " K of the furnaces used since 1840 , at Bleiberg , 30 LEAD .
... above the other ; the flame of the lower being conducted over the upper one . Figs . 5 and 6 will serve to explain the general form and construction FIG . 5 . FIG . 6 . b " K of the furnaces used since 1840 , at Bleiberg , 30 LEAD .
Página 47
... conducted to the nozzles though brick channels built beneath the floor of the smelting house . Ores treated in this furnace ought never to contain more than 30 per cent of metal , and when richer , must be reduced by the addition of ...
... conducted to the nozzles though brick channels built beneath the floor of the smelting house . Ores treated in this furnace ought never to contain more than 30 per cent of metal , and when richer , must be reduced by the addition of ...
Página 71
... conducted into a very extensive condensation apparatus which runs to the top of a hill in the form of flues , and enters a rain chamber communicating with a high chimney on the top of the hill . The rain chamber is provided with ...
... conducted into a very extensive condensation apparatus which runs to the top of a hill in the form of flues , and enters a rain chamber communicating with a high chimney on the top of the hill . The rain chamber is provided with ...
Página 73
... conduct of this simple process requires great attention , as too high a temperature causes a consider- able loss by volatilisation of the lead and sulphide of lead . When well conducted , the process gives a good yield of lead , and ...
... conduct of this simple process requires great attention , as too high a temperature causes a consider- able loss by volatilisation of the lead and sulphide of lead . When well conducted , the process gives a good yield of lead , and ...
Página 82
... conducted by a slope to another basin , where they accumulate for re - smelting . The length of the nose must be so regulated that the front wall is kept free from deposit ; and by lengthening or shorten- ing the nose , the hearth can ...
... conducted by a slope to another basin , where they accumulate for re - smelting . The length of the nose must be so regulated that the front wall is kept free from deposit ; and by lengthening or shorten- ing the nose , the hearth can ...
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Términos y frases comunes
24 hours Altenau amalgam amount of silver antimony argentiferous arsenic baryta bismuth black copper blast calcined cent of copper cent of lead cent of silver charcoal charge chiefly clay coal cobalt coke condensation copper matt crucible cubic feet cupelling cupola furnaces cwts decomposed desilverised dross extraction flue fluxes formation formed Freiberg fuel furnace ends fused galena gold hearth heated impure inches iron pyrites Lautenthal lead containing lead matt lime liquation litharge loss of lead loss of metal loss of silver mercury metre mixed mixture muffles nickel oxide oxide of lead oxidised Pattinson's process precipitated production quantity quartz raw lead raw matt reduced refined residues resulting reverberatory furnaces rich lead roasting mass roasting process schlich silica silver per cwt slags smelting process sodium sodium amalgam spar speiss sulphate of lead sulphide sulphuric acid sump temperature treated tuyere u. h. Ztg Upper Hartz volatilisation whilst yield zinc blende