The Metallurgy of Lead & Silver: Lead |
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Page xi
... Matte , 164 143 Slag Pots , 164 144 Separation of Slag and Matte , 168 1. The Overflow Pot , 168 146 2. The Exterior Forehearth Rectangular Furnaces , Dimensions , . 1. Foundation , 2. Crucible ,. 3. Shaft , 146 or " Settler , " 168 149 ...
... Matte , 164 143 Slag Pots , 164 144 Separation of Slag and Matte , 168 1. The Overflow Pot , 168 146 2. The Exterior Forehearth Rectangular Furnaces , Dimensions , . 1. Foundation , 2. Crucible ,. 3. Shaft , 146 or " Settler , " 168 149 ...
Page xii
... Matte , 197 Smelting of Roasted Matte , 204 Nickel and Cobalt in 205 33 Composition , 206 Preparation , 199 Treatment , 207 Roasting of Lead Matte ,. 201 4. Slag- Heap Roasting , 201 Final Disposal of Slag , 211 Stall Roasting , 202 ...
... Matte , 197 Smelting of Roasted Matte , 204 Nickel and Cobalt in 205 33 Composition , 206 Preparation , 199 Treatment , 207 Roasting of Lead Matte ,. 201 4. Slag- Heap Roasting , 201 Final Disposal of Slag , 211 Stall Roasting , 202 ...
Page 12
... matte , Copper ores and matte , Speiss , Furnace accretions , 45-50 0.3-1.5 High 50 1.0-3.0 30-45 0 : 3-0 · 6 25-35 0.5-1.0 35-50 0.3-1.5 30-60 0.5-0.7 25-50 0.3-1.5 Cover of litharge . High High Iron oxide helps . Low Cover of litharge ...
... matte , Copper ores and matte , Speiss , Furnace accretions , 45-50 0.3-1.5 High 50 1.0-3.0 30-45 0 : 3-0 · 6 25-35 0.5-1.0 35-50 0.3-1.5 30-60 0.5-0.7 25-50 0.3-1.5 Cover of litharge . High High Iron oxide helps . Low Cover of litharge ...
Page 15
... matte or speiss be found overlying the button this should be also in such a case scorified together with the lead . TABLE II . - CHARGES FOR CRUCIBLE ASSAYS . General Formulę . Quartzose Ores . Pyritous Ores . Basic Roasted Gold Concen ...
... matte or speiss be found overlying the button this should be also in such a case scorified together with the lead . TABLE II . - CHARGES FOR CRUCIBLE ASSAYS . General Formulę . Quartzose Ores . Pyritous Ores . Basic Roasted Gold Concen ...
Page 16
... matte . Cupellation . The best cupels are made of bone ash passed through a 40 - mesh sieve , and moistened with water to which a little K , CO , is sometimes added . They must be very slowly and carefully dried before using , and ...
... matte . Cupellation . The best cupels are made of bone ash passed through a 40 - mesh sieve , and moistened with water to which a little K , CO , is sometimes added . They must be very slowly and carefully dried before using , and ...
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alloy amount antimony arsenic assay average blast furnace borax bottom brick Broken Hill bullion carbonate cast-iron cent charcoal charge CHARLES GRIFFIN coal coke concentrated consumption containing cooling copper cost crucible crust cupellation desilverisation dross Engineers EXETER STREET feet Flintshire flue flue-dust flux Freiberg fuel fume fusible galena gases gold grey slag hearth Hofman inches iron jackets Lautenthal lead and silver lead sulphide Leadville lime liquation litharge matte melting metal Metallurgy Metallurgy of Lead method mixture molten ordinary oxide oxidised Parkes process pipe plates Port Pirie practice produced proportion pyrites quantity reaction reduced residues reverberatory reverberatory furnace roasting sample Schnabel scorifier separate shown in Fig silicates silver contents 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...