Refining Gold By The Silver Inquart Method
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Refining Gold By The Silver Inquart Method
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Author : Walter C. Lashley
language : en
Publisher:
Release Date : 1983
Refining Gold By The Silver Inquart Method written by Walter C. Lashley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Gold categories.
Gold Refining
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Author : Donald Clark
language : en
Publisher:
Release Date : 1909
Gold Refining written by Donald Clark and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1909 with Gold categories.
Refining Precious Metal Wastes Gold Silver Platinum Metals
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Author : Calm Morrison Hoke
language : en
Publisher:
Release Date : 1984
Refining Precious Metal Wastes Gold Silver Platinum Metals written by Calm Morrison Hoke and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Metallurgy categories.
Gold Refining
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Author : George J. Gajda
language : en
Publisher: George J. Gajda
Release Date : 1976
Gold Refining written by George J. Gajda and has been published by George J. Gajda this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Science categories.
Simplified Methods Of Refining Scrap Gold And Silver
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Author : C. W. Ammen
language : en
Publisher:
Release Date : 1979
Simplified Methods Of Refining Scrap Gold And Silver written by C. W. Ammen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Gold categories.
Recovery Of Gold And Silver In Secondary Slag From Gold Refining Process By Co Precipitation With Metal Hydroxides
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Author : Romchat Chairaksa
language : en
Publisher:
Release Date : 2005
Recovery Of Gold And Silver In Secondary Slag From Gold Refining Process By Co Precipitation With Metal Hydroxides written by Romchat Chairaksa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Precious metals categories.
Purification of gold using chlorine gas as an extracting agent is one of the oldest and most widely used process in large scale gold refining, so called "Miller Chlorination Process" Slag derived from this process is usually called "Primary slag" generally containing 5-10 wt% gold. Secondary slag produced after smelting of the primary slag generally contains approximately 200-300 ppm gold and 1000 ppm silver, which indicates the high potentiality for further recovery of precious metals (Au and Ag). The aim of this study is to develop an effective recovery system for gold and silver, from secondary slag during gold refining process. The recovery process consists of both physical process (comminution and shaking table) and chemical separation (extraction with nitric acid and aqua regia respectively). The extracted gold and silver were recovered by co-precipitation with metal (e.g. Fe, Cu) hydroxides at pH 6, and then, the co-precipitation including goldwas dissolved with 1 M hydrochloric acid or 1 M nitric acid. The result of physical separation process showed alloy of Au-Ag-Cu was liberated from the slag under the size of 70 Mesh. After passing the shaking table, the concentration of slag was upgraded from 0.015% to 0.126% of gold and from 0.174% to 1.56% of silver. Then, the two-stage leaching with nitric acid and aqua regia was applied to recover silver as AgCl precipitate, and gold as [AuCl[subscript 2]] with AgNo[subscript 3] impurities. Then, the solution or leachate was further concentrated by co-precipitation with metal (Fe, Cu) hydroxides at pH 6. The chlorohydroxy Au (III) complexes co-precipitated on metal hydroxides are reduced to elemental gold (Au[superscript 0]) without adding any reducing reagents. The gold and silver was further purified by (comparatively) dissolved using 1M HNO[subscript 3] and 1M HCI. The results showed that gold and silver could be effectively purified by treatment of 1M HNO[subscript 3] rather than that of 1M HCI.
Manual Of Assaying Gold Silver Copper And Lead Ores
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Author : Walter Lee Brown
language : en
Publisher:
Release Date : 1889
Manual Of Assaying Gold Silver Copper And Lead Ores written by Walter Lee Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1889 with Assaying categories.
Greek Refining Techniques And The Composition Of Gold Silver Alloys
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Author : John F. Healy
language : en
Publisher:
Release Date : 1974
Greek Refining Techniques And The Composition Of Gold Silver Alloys written by John F. Healy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Coins, Greek categories.
The Metallurgy Of Silver
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Author : Manuel Eissler
language : en
Publisher:
Release Date : 1896
The Metallurgy Of Silver written by Manuel Eissler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1896 with Amalgamation categories.
Brief Account Of The Invention And Importance Of A New Method Of Refining Gold
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Author : Richard Sears McCulloh
language : en
Publisher:
Release Date : 1850
Brief Account Of The Invention And Importance Of A New Method Of Refining Gold written by Richard Sears McCulloh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1850 with Gold categories.
