The Assayer's Manual. An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page viii
... Litharge necessary for the Decomposition of the various Metallic Sulphides ; Preparation of Litharge entirely free from Silver ; Solvent Agents ; Acid Basic Precipitating or Desulphurizing Agents ; Sulphurizing Agents ; Concentrating ...
... Litharge necessary for the Decomposition of the various Metallic Sulphides ; Preparation of Litharge entirely free from Silver ; Solvent Agents ; Acid Basic Precipitating or Desulphurizing Agents ; Sulphurizing Agents ; Concentrating ...
Page x
... Litharge ; Cupellation of the Argentiferous Lead ( Assaying by the Cupel or Cupellation ) · Wet Assays ; Balling's Volumetric Assay Assays of Alloys ; Dry Assays ; Lead Bullion ; Silver Amalgam 146 Copper Poor in Silver ; Cupriferous ...
... Litharge ; Cupellation of the Argentiferous Lead ( Assaying by the Cupel or Cupellation ) · Wet Assays ; Balling's Volumetric Assay Assays of Alloys ; Dry Assays ; Lead Bullion ; Silver Amalgam 146 Copper Poor in Silver ; Cupriferous ...
Page 37
... litharge , white - lead ore ) ; or in connection with reducing , fluxing , and solvent agents ( borax , glass , phosphorus salt ) . A definite low temperature must then be used to reduce one metallic oxide , while the metallic oxides ...
... litharge , white - lead ore ) ; or in connection with reducing , fluxing , and solvent agents ( borax , glass , phosphorus salt ) . A definite low temperature must then be used to reduce one metallic oxide , while the metallic oxides ...
Page 68
... the requisite porosity to absorb litharge ( when taken up with the tongs they must not crumble , but it should be possible to crush A 1 B. u . h . Ztg . 1868 , p . 154 . them with the fingers ) . They must neither undergo 68 ASSAYING .
... the requisite porosity to absorb litharge ( when taken up with the tongs they must not crumble , but it should be possible to crush A 1 B. u . h . Ztg . 1868 , p . 154 . them with the fingers ) . They must neither undergo 68 ASSAYING .
Page 69
... litharge too slowly , cupellation being thereby prolonged , which causes a loss of silver . If , on the other hand , they are too porous , they absorb too much silver and gold with the lead ox- ides . ( A loss of metal can never be ...
... litharge too slowly , cupellation being thereby prolonged , which causes a loss of silver . If , on the other hand , they are too porous , they absorb too much silver and gold with the lead ox- ides . ( A loss of metal can never be ...
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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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