The Assayer's Manual: An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page ix
... Borax . By itself without Borax and Lead ( Hungarian Speiss Assay ) ; With Lead and Borax ( Müsen Assay ) Refining by Cupellation . Refining with the Blowpipe ; Oxidized Substances without Sulphur • Alloys of Copper ; Cornish Copper ...
... Borax . By itself without Borax and Lead ( Hungarian Speiss Assay ) ; With Lead and Borax ( Müsen Assay ) Refining by Cupellation . Refining with the Blowpipe ; Oxidized Substances without Sulphur • Alloys of Copper ; Cornish Copper ...
Page x
... Borax ; The Number of Samples to be Taken ; Table of Charges 133 · Practice in Hungary and the Lower Harz ; Crucible Assay Charges of Various Countries 137 138 Combined Lead and Silver Assay 140 Litharge ; Cupellation of the ...
... Borax ; The Number of Samples to be Taken ; Table of Charges 133 · Practice in Hungary and the Lower Harz ; Crucible Assay Charges of Various Countries 137 138 Combined Lead and Silver Assay 140 Litharge ; Cupellation of the ...
Page 22
... borax , cast into a bar , weighed , and sampled by chipping from top and bottom . The portion that has passed through the sieve , freed from iron with the magnet , is then weighed , sampled from every weighing , then united , quartered ...
... borax , cast into a bar , weighed , and sampled by chipping from top and bottom . The portion that has passed through the sieve , freed from iron with the magnet , is then weighed , sampled from every weighing , then united , quartered ...
Page 37
... ( borax , glass , etc. ) , than absorbed by the porous vessel used for fusing ( cupels ) . b . Reducing fusion . - This operation is seldom execu- ted by itself with reducing agents ( coal , flour , colophony , potassium cyanide ) , but ...
... ( borax , glass , etc. ) , than absorbed by the porous vessel used for fusing ( cupels ) . b . Reducing fusion . - This operation is seldom execu- ted by itself with reducing agents ( coal , flour , colophony , potassium cyanide ) , but ...
Page 38
... ( borax , glass , alkalies ) . e . Mixing fusion , to prepare alloys by fusing different metals together ( gold and silver in quartation ) . f . Remelting , in order to produce the sample in another form ( as , for instance , by ...
... ( borax , glass , alkalies ) . e . Mixing fusion , to prepare alloys by fusing different metals together ( gold and silver in quartation ) . f . Remelting , in order to produce the sample in another form ( as , for instance , by ...
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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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