The Metallurgy of Lead & Silver: LeadGriffin, 1899 - Lead |
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Page 24
... Bismuth . - Even 0075 per cent . of bismuth affects the quality of lead for white - lead making . According to Napier , 0-1 per * Percy , Metallurgy of Silver , p . 173 . + v . Chap . x . Hampe , Zeitschr . f . B.- H.- u . S.- wesen ...
... Bismuth . - Even 0075 per cent . of bismuth affects the quality of lead for white - lead making . According to Napier , 0-1 per * Percy , Metallurgy of Silver , p . 173 . + v . Chap . x . Hampe , Zeitschr . f . B.- H.- u . S.- wesen ...
Page 25
... bismuth makes lead slightly harder , somewhat crystalline and more fusible , though , according to the researches of Burggraf , * its malleability is not affected by admix- ture of bismuth , even in proportions up to 2 per cent . When ...
... bismuth makes lead slightly harder , somewhat crystalline and more fusible , though , according to the researches of Burggraf , * its malleability is not affected by admix- ture of bismuth , even in proportions up to 2 per cent . When ...
Page 218
... bismuth , zinc , arsenic , cobalt , nickel , and a considerable portion of the sulphur contained in the ores . The nature of these pro- cesses and their relationship to each other are well shown in a diagram figured in Prof. Sir W. C. ...
... bismuth , zinc , arsenic , cobalt , nickel , and a considerable portion of the sulphur contained in the ores . The nature of these pro- cesses and their relationship to each other are well shown in a diagram figured in Prof. Sir W. C. ...
Page 275
... Bismuth has distinctly less affinity for oxygen than lead itself , and cannot be readily separated from it ; fortunately , this metal does not interfere at all with desilverisation , even in the propor tion of 2 per cent . , as shown by ...
... Bismuth has distinctly less affinity for oxygen than lead itself , and cannot be readily separated from it ; fortunately , this metal does not interfere at all with desilverisation , even in the propor tion of 2 per cent . , as shown by ...
Page 279
... bismuth , all its tin but 1 per cent . , and all its antimony save about 5 per cent . The dross melted down and allowed to cool separates into three separate products - viz . , lead , speiss , and matte . The comparative absence of iron ...
... bismuth , all its tin but 1 per cent . , and all its antimony save about 5 per cent . The dross melted down and allowed to cool separates into three separate products - viz . , lead , speiss , and matte . The comparative absence of iron ...
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Common terms and phrases
alloy amount antimony arsenic assay average blast furnace bottom brick Broken Hill bullion carbon cast-iron cent charge CHARLES GRIFFIN coal coke concentrates consumption containing cooling copper cost crucible crust cupellation desilverisation doors dross dust Engineers EXETER STREET feet firebrick Flintshire flue flue-dust flux Freiberg fuel fume fusible fusion galena gases gold grey slag hearth Hofman inches iron jackets labour Lautenthal lead and silver lead sulphide Leadville lime liquation litharge matte melting metal Metallurgy Metallurgy of Lead method mixture molten oxide oxidised Parkes process pipe plates Port Pirie practice produced proportion pyrites quantity rabble reaction reduced residues reverberatory reverberatory furnace roasting sample Schnabel scorifier separate shown in Figs silicates silver contents sintering SiO2 skimmings slag smelting softening furnace speiss sulphate sulphide Table tapped temperature tons Trans treated tuyeres volatilisation volatilisation loss weight work-lead zinc
Popular passages
Page 85 - The arguments for and against " sintering " and " slagging " respectively have been already stated in this chapter, and need not be repeated here. Suffice it to say that the...