The Metallurgy of Lead & Silver: LeadGriffin, 1899 - Lead |
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Page xi
... Coke and Charcoal , 133 123 Anthracite ,. 134 124 Bituminous Coal ,. 134 Gaseous Fuel , 135 124 • • • Amount of Fuel Required , 135 124 General Arrangement , 136 5. Water Jackets , 154 General Consideration of Details , 137 Cast - iron ...
... Coke and Charcoal , 133 123 Anthracite ,. 134 124 Bituminous Coal ,. 134 Gaseous Fuel , 135 124 • • • Amount of Fuel Required , 135 124 General Arrangement , 136 5. Water Jackets , 154 General Consideration of Details , 137 Cast - iron ...
Page xiii
... Coke Towers , 244 2. Fusion , 252 3. Freudenberg Plates , 244 Costs of Working , Labour , Smelting Charges , Losses , 253 Purchase of Ores , 258 253 253 Western Smelters ' Sliding Scale , 258 256 264 260 Concentration , Concentration at ...
... Coke Towers , 244 2. Fusion , 252 3. Freudenberg Plates , 244 Costs of Working , Labour , Smelting Charges , Losses , 253 Purchase of Ores , 258 253 253 Western Smelters ' Sliding Scale , 258 256 264 260 Concentration , Concentration at ...
Page 12
... coke . The scorifier commonly used in Colorado is the 21 - inch size , the charge for which is assay ton ( or on the 2000 lbs . ton scale , 2.9167 grammes , upon which quantity each mg . of silver obtained represents 1 oz . per ton ) ...
... coke . The scorifier commonly used in Colorado is the 21 - inch size , the charge for which is assay ton ( or on the 2000 lbs . ton scale , 2.9167 grammes , upon which quantity each mg . of silver obtained represents 1 oz . per ton ) ...
Page 16
... coke up to within an inch or two of the top without difficulty . It is important that the coke at the top of the fire be at a bright red heat , as otherwise the bottom of the charge melting while the top is still cold will effervesce ...
... coke up to within an inch or two of the top without difficulty . It is important that the coke at the top of the fire be at a bright red heat , as otherwise the bottom of the charge melting while the top is still cold will effervesce ...
Page 38
... coke or charcoal . A small proportion of sulphate formed in the roasting is either transformed into silicate at the end of the roasting process , and then reduced in the smelting furnace with the help of iron oxide , or it may be ...
... coke or charcoal . A small proportion of sulphate formed in the roasting is either transformed into silicate at the end of the roasting process , and then reduced in the smelting furnace with the help of iron oxide , or it may be ...
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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...