The Assayer's Guide; Or, Practical Directions to Assayers, Miners, and Smelters: For the Tests and Assays, by Heat and Wet Processes, of the Ores of All the Principal Metals, of Gold and Silver Coins and Alloys, and of Coal, &c |
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Page 17
... furnace . For most purposes the muffle furnace suffices , and it is the only one used for gold , silver , and copper ores ; but for iron , lead , & c . we require another , though much simpler one . I shall first describe the muffle ...
... furnace . For most purposes the muffle furnace suffices , and it is the only one used for gold , silver , and copper ores ; but for iron , lead , & c . we require another , though much simpler one . I shall first describe the muffle ...
Page 18
... furnace is exhibited from in front in fig . 1 , in a lateral section in fig . 3 , and in a transverse perpendicular section in fig . 2. A scale , showing the proportionate dimensions in English feet , is attached , to facilitate the use ...
... furnace is exhibited from in front in fig . 1 , in a lateral section in fig . 3 , and in a transverse perpendicular section in fig . 2. A scale , showing the proportionate dimensions in English feet , is attached , to facilitate the use ...
Page 19
... furnace , C D , is two feet nine inches . The furnace consists of three chief parts , the chimney , r , in figs . 2 and 3 , ( which need only be 3 feet high if it enters the chief chimney of the laboratory , which should then measure at ...
... furnace , C D , is two feet nine inches . The furnace consists of three chief parts , the chimney , r , in figs . 2 and 3 , ( which need only be 3 feet high if it enters the chief chimney of the laboratory , which should then measure at ...
Page 23
... furnace , as it can best be constructed when not required to be movable , I shall proceed to the furnace for tests of iron ores , lead ores , & c . , also in a shape not intended to be moved , as repre- sented by a lateral section in ...
... furnace , as it can best be constructed when not required to be movable , I shall proceed to the furnace for tests of iron ores , lead ores , & c . , also in a shape not intended to be moved , as repre- sented by a lateral section in ...
Page 24
... furnace is to be used for iron assays , in which case a very intense heat is requi- site , a similar channel as illustrated in K , fig . 3 , should be attached , the longer the better , and , if possible , opening into some cool place ...
... furnace is to be used for iron assays , in which case a very intense heat is requi- site , a similar channel as illustrated in K , fig . 3 , should be attached , the longer the better , and , if possible , opening into some cool place ...
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A. A. FESQUET added alloy American amount of silver antimony Appendix aqua regia Architect ascertain assay assayer black flux Boilers borax BRANNT brick button BYRNE Calculating carats carbon charcoal Chemical Chemist and Engineer Chemistry chloride Civil Engineer clay cloth Coal Coins Colors Complete Practical Comprising Construction Containing copper Cotton crucible cupels Distillation Dyeing edition employed Fabrication Formulæ Franklin Institute French gineer Hand-Book heat HENRY CAREY Hessian Hessian crucible I2mo Illustrated inch Instructions iron JOSHUA ROSE latter litharge Louis coined Manufacture Mechanical melting mercury metal Metallurgy method Minerals Mining mixed muffle furnace muriatic acid necessary nitric acid numerous oxide per-centage peroxide piece platinum Pound powdered Practical Treatise procured produced Professor pure lead pure silver quantity quartz quicksilver Receipts retort Royal Rules Sheet-Iron slag specific gravity Steam Steam-Engine Steel sulphur sulphuret Tables tains tion tongs Translated various Varnishing weight wet processes WILLIAM wood engravings
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