The Assayer's Manual: An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page 82
... Common salt ( sodium chloride ) NaCl , with 39.66 Na and 60.34 Cl , for the volatilization of antimony and arsenic in refining black copper according to the Cornish method . 8. Air - excluding fluxes ( covering agents ) .- Decrepi ...
... Common salt ( sodium chloride ) NaCl , with 39.66 Na and 60.34 Cl , for the volatilization of antimony and arsenic in refining black copper according to the Cornish method . 8. Air - excluding fluxes ( covering agents ) .- Decrepi ...
Page 87
... common salt 5 millimeters ( 0.197 inch ) thick . The charged crucible is then placed between the darkly glowing coal in the furnace . The latter is closed , and the temperature gradually raised in about five minutes to complete redness ...
... common salt 5 millimeters ( 0.197 inch ) thick . The charged crucible is then placed between the darkly glowing coal in the furnace . The latter is closed , and the temperature gradually raised in about five minutes to complete redness ...
Page 89
... common salt ) , smelting for 12 to 15 minutes , etc. - Belgium : 10 grammes ( 154.32 grains ) of galena with 28 grammes ( 432.10 grains ) of sodium carbonate and 5 grammes ( 77.16 grains ) borax , or 10 grammes ( 154.32 grains ) sodium ...
... common salt ) , smelting for 12 to 15 minutes , etc. - Belgium : 10 grammes ( 154.32 grains ) of galena with 28 grammes ( 432.10 grains ) of sodium carbonate and 5 grammes ( 77.16 grains ) borax , or 10 grammes ( 154.32 grains ) sodium ...
Page 90
... common salt 5 millimeters ( 0.197 inch ) thick , and on top of all a piece of charcoal the size of a hazel - nut ... salt ( p . 86 ) to become decomposed by the metallic iron . 25 to 30 minutes are required for fusing the charge . The ...
... common salt 5 millimeters ( 0.197 inch ) thick , and on top of all a piece of charcoal the size of a hazel - nut ... salt ( p . 86 ) to become decomposed by the metallic iron . 25 to 30 minutes are required for fusing the charge . The ...
Page 91
... common salt , 5 millimeters ( 0.196 inch ) thick . The charge is heated fromto 1 hour in the wind - furnace . - Pribram : 0.5 gramme ( 7.71 grains ) of crude argol is placed in the bottom of the crucible , upon this iron wire , then 5 ...
... common salt , 5 millimeters ( 0.196 inch ) thick . The charge is heated fromto 1 hour in the wind - furnace . - Pribram : 0.5 gramme ( 7.71 grains ) of crude argol is placed in the bottom of the crucible , upon this iron wire , then 5 ...
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Common terms and phrases
2.5 grammes 20 grammes added alloy ammonia ammonium antimony aqua regia argol arsenic assay sample beaker-glass bismuth black copper black flux boiled borax burette cent charcoal charge chloride coal cobalt color common salt containing copper covering of common crucible crucible Fig cubic centimeters cubic inches cupelled decanted decomposed determined diluted Dingler dried evaporated to dryness ferric oxide ferrous filtered filtrate flask fluid foreign metals Fresenius furnace fused fusion glass gold gramme 15.43 grains gramme 7.71 grains grammes 154.32 grains grammes 77.16 grains granulated lead heated hydrate hydrochloric acid ignited iron lead button liquid litharge mercury metallic sulphides meters method millimeters mixed mixture muffle muffle-furnace nickel nitric acid percentage placed platinum porcelain potassium carbonate potassium cyanide poured powdered precipitated pyrites refractory residue scorifier slag smelting sodium carbonate sodium sulphide substances sulphate sulphuretted hydrogen sulphuric acid temperature titrated tube u. h. Ztg volumetric washed weighed zinc Ztschr
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