The Metallurgy of Lead & Silver: LeadGriffin, 1899 - Lead |
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Page xiv
... Acid Process , 5. Electrolytic Process , Bye - products of the Parkes Process , 327 Treatment of Rich Alloys , 328 328 328 329 Retort Dross , 329 crusts , 319 Blue Powder , 329 1. Flach's Process , 319 Costs and Losses , 329 2 ...
... Acid Process , 5. Electrolytic Process , Bye - products of the Parkes Process , 327 Treatment of Rich Alloys , 328 328 328 329 Retort Dross , 329 crusts , 319 Blue Powder , 329 1. Flach's Process , 319 Costs and Losses , 329 2 ...
Page 10
... acid and diluted to 250 c.c. It is then heated to boiling , and the molybdate dropped in till a yellow colour is produced on adding a drop of the solution to one of the tannin drops on the plate . The standardisation is performed in ...
... acid and diluted to 250 c.c. It is then heated to boiling , and the molybdate dropped in till a yellow colour is produced on adding a drop of the solution to one of the tannin drops on the plate . The standardisation is performed in ...
Page 11
... acid , and weighed in the metallic condition ; the difference between its weight and that of the bead obtained by cupellation being the weight of silver . In the case of rich galenas , of which 400 grains or more have been taken for ...
... acid , and weighed in the metallic condition ; the difference between its weight and that of the bead obtained by cupellation being the weight of silver . In the case of rich galenas , of which 400 grains or more have been taken for ...
Page 10
... acid and diluted to 250 c.c. It is then molybdate dropped in till a yellow colo a drop of the solution to one of the tan The standardisation is performed in dup 1 c.c. calculated . For the assay , take 1 gramme if unde gramme if over ...
... acid and diluted to 250 c.c. It is then molybdate dropped in till a yellow colo a drop of the solution to one of the tan The standardisation is performed in dup 1 c.c. calculated . For the assay , take 1 gramme if unde gramme if over ...
Page 10
... acid of kes place ; acid of 1.27 ive minutes washed twice ly * each time th water is in- .M.E . , vol . xxiv . , 2 for lead ores , for coppery ores , for sulphides. ES . 17.
... acid of kes place ; acid of 1.27 ive minutes washed twice ly * each time th water is in- .M.E . , vol . xxiv . , 2 for lead ores , for coppery ores , for sulphides. ES . 17.
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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...