The Assayer's Manual. An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page 22
... closed re- tains the charge , and with a handle . The samples are then mixed and reduced as above described ( Freiberg ) . In some of the German smelting works , the ore , ' when it is bought , is weighed to within 10 lbs . ( 5 kilog ...
... closed re- tains the charge , and with a handle . The samples are then mixed and reduced as above described ( Freiberg ) . In some of the German smelting works , the ore , ' when it is bought , is weighed to within 10 lbs . ( 5 kilog ...
Page 29
... closed tubes . The bal- ance beam should be raised from the knife edge every time before a weight is put into or removed from the pan . The weights must not be put in the pan at random , but systematically , as this is the only way of ...
... closed tubes . The bal- ance beam should be raised from the knife edge every time before a weight is put into or removed from the pan . The weights must not be put in the pan at random , but systematically , as this is the only way of ...
Page 31
... closed with a stopper , while in the other is a wooden cylinder provided with a scale . 5. MANNER OF CHARGING THE SAMPLE . The sample is poured either directly into the crucible without any fluxes ( as in roasting ) , or the fluxes are ...
... closed with a stopper , while in the other is a wooden cylinder provided with a scale . 5. MANNER OF CHARGING THE SAMPLE . The sample is poured either directly into the crucible without any fluxes ( as in roasting ) , or the fluxes are ...
Page 39
... closed at e by a small glass rod . b . Evaporation of the solution in a glass flask ( Swed- ish assay of copper , assay of lead sulphate ) , or in a covered porcelain dish by heating it in the sand - bath , over a lamp , or on the water ...
... closed at e by a small glass rod . b . Evaporation of the solution in a glass flask ( Swed- ish assay of copper , assay of lead sulphate ) , or in a covered porcelain dish by heating it in the sand - bath , over a lamp , or on the water ...
Page 49
... closed at the rear ; and the semi - cylindrical body is often provided along the sides with draft orifices , as shown . It is either connected Fig . 24 . Engin . and Min . Journ . 1878 , No. 26 , p . 443. Silliman , Double Muffle ...
... closed at the rear ; and the semi - cylindrical body is often provided along the sides with draft orifices , as shown . It is either connected Fig . 24 . Engin . and Min . Journ . 1878 , No. 26 , p . 443. Silliman , Double Muffle ...
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Common terms and phrases
15 grammes 20 grammes added alloy ammonia ammonium antimony aqua regia argol arsenic assay sample beaker-glass bismuth black flux boiled borax cent charcoal charge chloride coal cobalt color common salt containing copper covering of common crucible crucible Fig cubic centimeter 0.061 cubic centimeters cubic inches cupelled decomposed determined diluted Dingler dish dried evaporated to dryness ferric oxide ferrous filtered filtrate flask fluid foreign metals Fresenius furnace fused fusion galena 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 method millimeters mixed mixture muffle muffle-furnace nickel nitric acid percentage placed platinum potassium carbonate potassium cyanide poured powdered precipitated pyrites quantity of lead residue roasted scorifier slag smelting sodium carbonate sodium sulphide solution substances sulphuretted hydrogen sulphuric acid temperature thousandths titrated tube u. h. Ztg vessels washed weighed zinc Ztschr
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