The Assayer's Manual: An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page xiv
... means of Iodine 222 Determination of Tin by means of Potassium Permanganate XI . BISMUTH . Ores ; Fire Assays ; Ores and Compounds free from Sulphur ( Native Bismuth , Tetradymite , Bismuthic Cupel Ash , etc. ) . Sulphurized Bismuth ...
... means of Iodine 222 Determination of Tin by means of Potassium Permanganate XI . BISMUTH . Ores ; Fire Assays ; Ores and Compounds free from Sulphur ( Native Bismuth , Tetradymite , Bismuthic Cupel Ash , etc. ) . Sulphurized Bismuth ...
Page 17
... means entirely displaced the dry method , for the latter is employed in all cases where results sufficiently accurate are more quickly reached , or where suitable , simple wet assay methods ( as in assay- Kerl , Eisenprobirkunst ...
... means entirely displaced the dry method , for the latter is employed in all cases where results sufficiently accurate are more quickly reached , or where suitable , simple wet assay methods ( as in assay- Kerl , Eisenprobirkunst ...
Page 19
... means of rollers or stamps , or with a sledge - hammer . A square or conical heap is then formed of the pieces , and this is divided into four parts . One of these is taken , the pieces forming it are still further comminuted , and then ...
... means of rollers or stamps , or with a sledge - hammer . A square or conical heap is then formed of the pieces , and this is divided into four parts . One of these is taken , the pieces forming it are still further comminuted , and then ...
Page 23
... means of a hollow chisel and hammer . ( In England and the United States , the opposite edges are chipped off . ) The samples are hammered or rolled out , the resulting sheets cut into shreds , and each sample is assayed by itself ( 0.5 ...
... means of a hollow chisel and hammer . ( In England and the United States , the opposite edges are chipped off . ) The samples are hammered or rolled out , the resulting sheets cut into shreds , and each sample is assayed by itself ( 0.5 ...
Page 24
... means a sample is obtained from the centre of the ingot , which is not the case in chipping a sample , but the ingot is made unsightly . It is very difficult to mix the borings uniformly , and it is therefore better to fuse them under a ...
... means a sample is obtained from the centre of the ingot , which is not the case in chipping a sample , but the ingot is made unsightly . It is very difficult to mix the borings uniformly , and it is therefore better to fuse them under a ...
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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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