The Assayer's Manual: An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page v
... Sample ; De- termination of Moisture Scheibler's Steam Apparatus ; Fresenius's Drying Disk 25 25 26 Pulverizing the Desiccated Mass ; Sifting 27 Washing ; Marriotte's Bottle . 28 Weighing and Measuring · 29 Weighing A Pulverulent Sample ...
... Sample ; De- termination of Moisture Scheibler's Steam Apparatus ; Fresenius's Drying Disk 25 25 26 Pulverizing the Desiccated Mass ; Sifting 27 Washing ; Marriotte's Bottle . 28 Weighing and Measuring · 29 Weighing A Pulverulent Sample ...
Page vii
... Sampling ; For Drying the Samples . For Comminuting the Samples ; For Sifting ; for Washing ; For Weighing ; For Charging ; Implements for Transporting the Assaying Vessels , and for Manipulating the same in the Furnace Implements for ...
... Sampling ; For Drying the Samples . For Comminuting the Samples ; For Sifting ; for Washing ; For Weighing ; For Charging ; Implements for Transporting the Assaying Vessels , and for Manipulating the same in the Furnace Implements for ...
Page xi
... Sample Charging ; Cupelling ; Flattening ( Laminating ) the Button Boiling in Nitric Acid • Washing ( rinsing off ) ... Samples of Ores ; Alloys of Gold with Copper 178 V. PLATINUM . Ores ; Assay of Platiniferous Ores ; Fire Assays ...
... Sample Charging ; Cupelling ; Flattening ( Laminating ) the Button Boiling in Nitric Acid • Washing ( rinsing off ) ... Samples of Ores ; Alloys of Gold with Copper 178 V. PLATINUM . Ores ; Assay of Platiniferous Ores ; Fire Assays ...
Page 19
... SAMPLING . It is absolutely necessary that the small quantity of sample with which the assay is made , should represent the average composition of the ore - heap , etc. , from which it is taken . The manner of taking samples varies ...
... SAMPLING . It is absolutely necessary that the small quantity of sample with which the assay is made , should represent the average composition of the ore - heap , etc. , from which it is taken . The manner of taking samples varies ...
Page 20
... sample remains , in such comminuted form that it will pass through a sieve having 30 by 30 meshes to the square centimeter ( about 75 meshes to the inch ) . B. Samples taken while the ore , etc. , is being weighed . -Pieces are taken at ...
... sample remains , in such comminuted form that it will pass through a sieve having 30 by 30 meshes to the square centimeter ( about 75 meshes to the inch ) . B. Samples taken while the ore , etc. , is being weighed . -Pieces are taken at ...
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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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