The Metallurgy of Lead & Silver: LeadGriffin, 1899 - Lead |
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... Assay and Analysis of the OF MANUFACTURE , Materials Involved . Refining of Bullion , Cost of Working , & c . Fourth Edition , Revised and Enlarged . 15s . INTRODUCTION TO THE STUDY OF METALLURGY . BY SIR W. C. ROBERTS - AUSTEN . With ...
... Assay and Analysis of the OF MANUFACTURE , Materials Involved . Refining of Bullion , Cost of Working , & c . Fourth Edition , Revised and Enlarged . 15s . INTRODUCTION TO THE STUDY OF METALLURGY . BY SIR W. C. ROBERTS - AUSTEN . With ...
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... Assay and Analysis of the Materials Involved . Part II . - SILVER . Comprising Details Regarding the SOURCES AND TREATMENT OF SILVER ORES , TOGETHER WITH DESCRIPTIONS OF PLANT , MACHINERY , AND PROCESSES OF MANUFACTURE , Refining of ...
... Assay and Analysis of the Materials Involved . Part II . - SILVER . Comprising Details Regarding the SOURCES AND TREATMENT OF SILVER ORES , TOGETHER WITH DESCRIPTIONS OF PLANT , MACHINERY , AND PROCESSES OF MANUFACTURE , Refining of ...
Page ix
... Assay for Silver and Gold , Scorification Assays , Crucible Assays , Cupellation , Parting , Assay of Matte and other 2 . other Lead Ores , 7 Cupriferous Substances for Silver , Wet Assay for Lead , • 1. Gravimetric , Losses of Silver ...
... Assay for Silver and Gold , Scorification Assays , Crucible Assays , Cupellation , Parting , Assay of Matte and other 2 . other Lead Ores , 7 Cupriferous Substances for Silver , Wet Assay for Lead , • 1. Gravimetric , Losses of Silver ...
Page 1
... assay office , where duplicate quan- tities , of say 2 lbs . each , are weighed out and dried in an iron or porcelain dish . The sampling proper is , except in the case of very rich silver ores , always begun by the method of fractional ...
... assay office , where duplicate quan- tities , of say 2 lbs . each , are weighed out and dried in an iron or porcelain dish . The sampling proper is , except in the case of very rich silver ores , always begun by the method of fractional ...
Page 6
... assayed separately , the weight of sample passing the sieve being also determined . The correct assay value of the ore is then the amount shown by assay of the fine powder plus the assay of the " metallics " calculated back on the ...
... assayed separately , the weight of sample passing the sieve being also determined . The correct assay value of the ore is then the amount shown by assay of the fine powder plus the assay of the " metallics " calculated back on the ...
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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...