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 4
... sometimes it is associated with copper , zinc , silver , cobalt , and nickel ores . Malaguti and Durocher found silver in blende occurring in lead veins , from traces up to o'88 per cent , and also traces in all the iron , copper , and ...
... sometimes it is associated with copper , zinc , silver , cobalt , and nickel ores . Malaguti and Durocher found silver in blende occurring in lead veins , from traces up to o'88 per cent , and also traces in all the iron , copper , and ...
Página 5
... sometimes occurs together with copper and iron pyrites , and also with various oxidised and sul- phuretted metals . It is seldom found in large masses , and is mostly worked and smelted with galena . The most impor- tant localities ...
... sometimes occurs together with copper and iron pyrites , and also with various oxidised and sul- phuretted metals . It is seldom found in large masses , and is mostly worked and smelted with galena . The most impor- tant localities ...
Página 7
... Sometimes they are necessary for the formation of slags ; in other cases they act very favourably ( as lime does , in the reverberatory process ) ; and in some particular cases their influence is positively deleterious ( as , for ...
... Sometimes they are necessary for the formation of slags ; in other cases they act very favourably ( as lime does , in the reverberatory process ) ; and in some particular cases their influence is positively deleterious ( as , for ...
Página 8
... sometimes it has a dis- advantageous influence upon the melting mixture by aug- menting its amount of sulphur ( precipitation process ) ; but , in most cases , a certain amount of iron pyrites in galena is advantageous ( roasting ...
... sometimes it has a dis- advantageous influence upon the melting mixture by aug- menting its amount of sulphur ( precipitation process ) ; but , in most cases , a certain amount of iron pyrites in galena is advantageous ( roasting ...
Página 19
... sometimes , however , separate furnaces are em- ployed . The iron tools used for working the mass also exert some influence upon the production of lead . The higher * B . u . h . Ztg . , 1860 , p . 359 . the temperature the more liquid ...
... sometimes , however , separate furnaces are em- ployed . The iron tools used for working the mass also exert some influence upon the production of lead . The higher * B . u . h . Ztg . , 1860 , p . 359 . the temperature the more liquid ...
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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