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 21
... slags obtained are usually poor in lead and rich in silver ( if present in the original ore ) , and the lead in the slags is found in the state of sulphide of lead . This is , therefore , an appropriate mode of treatment for galena ...
... slags obtained are usually poor in lead and rich in silver ( if present in the original ore ) , and the lead in the slags is found in the state of sulphide of lead . This is , therefore , an appropriate mode of treatment for galena ...
Página 26
... slags after becoming oxidised . The ores must be poor in silver , or the resulting slags will have to be worked up again . 2. A Perfect Control of the Temperature . This is only possible when using light charges and furnaces of small ...
... slags after becoming oxidised . The ores must be poor in silver , or the resulting slags will have to be worked up again . 2. A Perfect Control of the Temperature . This is only possible when using light charges and furnaces of small ...
Página 34
... slag liquid by reason of the alkali in the ash . The slag then flows into the sump , and thence out of the working door . The contents of the sump are then stirred up , the rich slags are again mixed with coal near the bridge , and the ...
... slag liquid by reason of the alkali in the ash . The slag then flows into the sump , and thence out of the working door . The contents of the sump are then stirred up , the rich slags are again mixed with coal near the bridge , and the ...
Página 40
... , which is worked along with the smoke from the slag hearths ; ( 3 ) slags for smelting in hearths , and fur- nace - bottoms , which are worked with the slags . Four charges are smelted every twenty - four hours , 40 LEAD .
... , which is worked along with the smoke from the slag hearths ; ( 3 ) slags for smelting in hearths , and fur- nace - bottoms , which are worked with the slags . Four charges are smelted every twenty - four hours , 40 LEAD .
Página 41
... slags and smoke ( b ) , amount to— Labour Coal • Coke Lime • · Tools , wear and tear , & c . Total • a . b . s . d . S. d . • 4 103 6 10 2 5 2 9 0 5 0 71 948 9 • 8434 12 7 It was shown on page 29 that the expense of the Carinthian ...
... slags and smoke ( b ) , amount to— Labour Coal • Coke Lime • · Tools , wear and tear , & c . Total • a . b . s . d . S. d . • 4 103 6 10 2 5 2 9 0 5 0 71 948 9 • 8434 12 7 It was shown on page 29 that the expense of the Carinthian ...
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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