The Assayer's Manual: An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page xi
... Nitric Acid · Washing ( rinsing off ) the Rolls ; Drying and Annealing of the Rolls . Weighing of the Rolls ; Loss of Gold in Cupelling . Action of Platinum , Rhodium , and Iridium 169 · • 170 · 171 • 172 • 174 175 176 · 177 Palladium ...
... Nitric Acid · Washing ( rinsing off ) the Rolls ; Drying and Annealing of the Rolls . Weighing of the Rolls ; Loss of Gold in Cupelling . Action of Platinum , Rhodium , and Iridium 169 · • 170 · 171 • 172 • 174 175 176 · 177 Palladium ...
Page 82
... nitric acid . This is diluted with distilled water , allowed to stand for some time , and then filtered . The filtrate is strongly diluted , and chlo- ride of silver is precipitated by the addition of pure hydrochloric acid . This is ...
... nitric acid . This is diluted with distilled water , allowed to stand for some time , and then filtered . The filtrate is strongly diluted , and chlo- ride of silver is precipitated by the addition of pure hydrochloric acid . This is ...
Page 83
... Acids : hydrochloric , sulphuric , nitric , and acetic acid , aqua regia ( nitro - muriatic acid ) . Bases and salts : caus- tic alkalies , alkaline carbonates , potassium chlorate , fer- rous sulphate , sodium sulphide , etc. — Metals ...
... Acids : hydrochloric , sulphuric , nitric , and acetic acid , aqua regia ( nitro - muriatic acid ) . Bases and salts : caus- tic alkalies , alkaline carbonates , potassium chlorate , fer- rous sulphate , sodium sulphide , etc. — Metals ...
Page 95
... nitric acid , to which some tartaric acid has been added . It is neutralized with sodium carbonate , and the antimony is extracted by digesting the mass for about half an hour in a solution of sodium sulphide containing sulphur . It is ...
... nitric acid , to which some tartaric acid has been added . It is neutralized with sodium carbonate , and the antimony is extracted by digesting the mass for about half an hour in a solution of sodium sulphide containing sulphur . It is ...
Page 98
... nitric acid . When red vapors cease to come off , the mass is evaporated nearly to dryness with a few drops of sulphuric acid . If much lime is present , it is diluted with of a liter ( 0.2 pint ) of water before the sulphuric acid is ...
... nitric acid . When red vapors cease to come off , the mass is evaporated nearly to dryness with a few drops of sulphuric acid . If much lime is present , it is diluted with of a liter ( 0.2 pint ) of water before the sulphuric acid is ...
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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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