The Assayer's Manual. An Abridged Treatise on the Docimastic Examination of Ores, and Furnace and Other Artificial Products |
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Page 40
... minutes , and then boiled with the addition of a small quantity of water . It is then filtered , etc. Kipp's apparatus ( Fig 11 ) is well adapted for precipitation with sulphuretted hydrogen . C , a glass bulb , receives the diluted ...
... minutes , and then boiled with the addition of a small quantity of water . It is then filtered , etc. Kipp's apparatus ( Fig 11 ) is well adapted for precipitation with sulphuretted hydrogen . C , a glass bulb , receives the diluted ...
Page 87
... minutes to complete redness , and this is kept up until the contents of the crucible are in quiet fusion without foaming ( three to five minutes ) . The granules of lead floating on the top should be submerged B. u . h . Ztg . 1871 , p ...
... minutes to complete redness , and this is kept up until the contents of the crucible are in quiet fusion without foaming ( three to five minutes ) . The granules of lead floating on the top should be submerged B. u . h . Ztg . 1871 , p ...
Page 88
... minutes , and then poured The time required for the fusion , counted from placing the ore into the pot to the first pouring out , is from 10 to 15 minutes . The iron pots will bear from 40 to 50 operations . In many works lead matt free ...
... minutes , and then poured The time required for the fusion , counted from placing the ore into the pot to the first pouring out , is from 10 to 15 minutes . The iron pots will bear from 40 to 50 operations . In many works lead matt free ...
Page 89
... minutes , etc. - Belgium : 10 grammes ( 154.32 grains ) of galena with 28 grammes ( 432.10 grains ) of sodium carbonate and 5 grammes ( 77.16 grains ) borax , or 10 grammes ( 154.32 grains ) sodium carbonate and 10 grammes ( 154.32 ...
... minutes , etc. - Belgium : 10 grammes ( 154.32 grains ) of galena with 28 grammes ( 432.10 grains ) of sodium carbonate and 5 grammes ( 77.16 grains ) borax , or 10 grammes ( 154.32 grains ) sodium carbonate and 10 grammes ( 154.32 ...
Page 90
... iron . 25 to 30 minutes are required for fusing the charge . The sample , fuming strongly from the vapors of the common salt , is then taken out , allowed to cool off , and freed from slag . By hammering the lead flat 90 ASSAYING .
... iron . 25 to 30 minutes are required for fusing the charge . The sample , fuming strongly from the vapors of the common salt , is then taken out , allowed to cool off , and freed from slag . By hammering the lead flat 90 ASSAYING .
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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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