The Assayer's Manual: An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page vi
... Muffle Furnaces 49 Furnaces for Solid , Free - burning , Flaming Fuel 51 Plattner's Muffle Furnace for Coal , with stoke - hole in front ; Muffle Furnace with stoke - hole at the back . 52 • Charcoal and Coke Furnaces . 53 Assay ...
... Muffle Furnaces 49 Furnaces for Solid , Free - burning , Flaming Fuel 51 Plattner's Muffle Furnace for Coal , with stoke - hole in front ; Muffle Furnace with stoke - hole at the back . 52 • Charcoal and Coke Furnaces . 53 Assay ...
Page 34
... muffle of a muffle - furnace ( Fig . 25 ) and heated at a gradually increasing temperature until it glows ; the heating must be the more gradual the more fusible the sample . ( Antimonial and arsenical metals are more easily fused than ...
... muffle of a muffle - furnace ( Fig . 25 ) and heated at a gradually increasing temperature until it glows ; the heating must be the more gradual the more fusible the sample . ( Antimonial and arsenical metals are more easily fused than ...
Page 35
... muffle and brought to a glow . By this process the sulphates , antimoni- ates , and arseniates formed during the oxidizing period are reduced to metallic sulphides , antimo- nides , and arsenides , while the volatile products of oxida ...
... muffle and brought to a glow . By this process the sulphates , antimoni- ates , and arseniates formed during the oxidizing period are reduced to metallic sulphides , antimo- nides , and arsenides , while the volatile products of oxida ...
Page 36
... muffle and allowed to cool off . The sample is then placed in a mortar and rubbed up . Modifications . When the ores ... muffle- furnace ( for instance , cupellation of lead , refining copper , assay of cobalt and nickel ) ; or fluxes ...
... muffle and allowed to cool off . The sample is then placed in a mortar and rubbed up . Modifications . When the ores ... muffle- furnace ( for instance , cupellation of lead , refining copper , assay of cobalt and nickel ) ; or fluxes ...
Page 37
... muffle , wind , and blast furnaces may be used ( salt- petre in the Cornish assay of copper and in the assay of chromium , lead oxide in the assays of fuel , silver and gold ) ; or both at the same time ( refining of black copper ) ...
... muffle , wind , and blast furnaces may be used ( salt- petre in the Cornish assay of copper and in the assay of chromium , lead oxide in the assays of fuel , silver and gold ) ; or both at the same time ( refining of black copper ) ...
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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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