Practical Stamp Milling And Amalgamation
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In our eReader you can find the full English version of the book. Read Practical Stamp Milling And Amalgamation Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Practical Stamp Milling And Amalgamation
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A much discussed question is how to prevent the locking up of a large amount of bullion in the plates. To melt the plates into a bar of base bullion requires a new set which is costly. While the old set will more than pay for the new, all would prefer some way by which they could 'eat their cake and still have it. ' Of this locked-up gold, comparatively only a small part is absorbed in the plates, probably 1 / 6 or % oz. Of fine gold per square foot, and most of it in the surface copper, as has... been shown by planing plates and assaying the different sets of shavings. The major portion of the gold is in the form of a hard scale of amalgam; to remove this scale the copper must be laid bare and will thus have its amalgamating efficiency reduced for some time, which means a loss. To resilver the plate is expensive. The wet amalgamator attempts to keep the thickness of this scale at a minimum by softening the amalgam down to the silver-plating, the dry amalgamator accomplishes it by chiseling the amalgam off at intervals; but the scale is certain to accumulate unless they are willing to ruin the silver-plating and thereby lose its advantages.
What to read after Practical Stamp Milling And Amalgamation?
You can find similar books in the "Read Also" column, or choose other free books by H W Macfarren to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A much discussed question is how to prevent the locking up of a large amount of bullion in the plates. To melt the plates into a bar of base bullion requires a new set which is costly. While the old set will more than pay for the new, all would prefer some way by which they could 'eat their cake and still have it. ' Of this locked-up gold, comparatively only a small part is absorbed in the plates, probably 1 / 6 or % oz. Of fine gold per square foot, and most of it in the surface copper, as has... been shown by planing plates and assaying the different sets of shavings. The major portion of the gold is in the form of a hard scale of amalgam; to remove this scale the copper must be laid bare and will thus have its amalgamating efficiency reduced for some time, which means a loss. To resilver the plate is expensive. The wet amalgamator attempts to keep the thickness of this scale at a minimum by softening the amalgam down to the silver-plating, the dry amalgamator accomplishes it by chiseling the amalgam off at intervals; but the scale is certain to accumulate unless they are willing to ruin the silver-plating and thereby lose its advantages.
What to read after Practical Stamp Milling And Amalgamation?
You can find similar books in the "Read Also" column, or choose other free books by H W Macfarren to read onlineMoreLess
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