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 17
... liquid , the less oxysulphide will be formed ( if blende , iron pyrites , sparry iron ore , & c . , are associated with the ore ) . The further treatment of the residues for the extraction of the remaining lead depends on this . In the ...
... liquid , the less oxysulphide will be formed ( if blende , iron pyrites , sparry iron ore , & c . , are associated with the ore ) . The further treatment of the residues for the extraction of the remaining lead depends on this . In the ...
Página 19
... liquid slags . The lower the temperature at which the lead is extracted , the purer the metal ; there will also be less loss by volatilisation , and the foreign metals will be sooner oxidised and volatilised . Care must be taken that ...
... liquid slags . The lower the temperature at which the lead is extracted , the purer the metal ; there will also be less loss by volatilisation , and the foreign metals will be sooner oxidised and volatilised . Care must be taken that ...
Página 20
... liquid the mass becomes , and the more oxide , sulphide , and sulphate of lead will be decom- posed by the iron . In consequence of this the iron tools are sometimes worn away rapidly , causing considerable expense . Period 3 ...
... liquid the mass becomes , and the more oxide , sulphide , and sulphate of lead will be decom- posed by the iron . In consequence of this the iron tools are sometimes worn away rapidly , causing considerable expense . Period 3 ...
Página 34
... 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 lead ...
... 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 lead ...
Página 36
... liquid , and the oxy- sulphide fuses . To decompose this , an addition of lime and air is necessary . When by this means no more lead is ex- tracted , the remaining rich slags must be removed from the reverberatory furnace , and ...
... liquid , and the oxy- sulphide fuses . To decompose this , an addition of lime and air is necessary . When by this means no more lead is ex- tracted , the remaining rich slags must be removed from the reverberatory furnace , and ...
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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