Download or read book Small Scale Refining of Jewelers Wastes written by Roland Loewen and published by . This book was released on 1995 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Refining Precious Metal Wastes Gold silver platinum Metals written by Calm Morrison Hoke and published by . This book was released on 1984 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Refining Precious Metal Wastes written by Calm Morrison Hoke and published by . This book was released on 1982 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gold Refining written by Donald Clark and published by . This book was released on 1909 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Gold Refining written by George J. Gajda and published by George J. Gajda. This book was released on 1976 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Small Scale Gold Refining written by Roland Loewen and published by . This book was released on 1980 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recovering Precious Metals from Waste Liquid Residues written by George Edward Gee and published by . This book was released on 1920 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recovery and Refining of Precious Metals written by C.W. Ammen and published by Springer. This book was released on 1984 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book How To Smelt Your Gold Silver written by Jr Hank Chapman and published by . This book was released on 2019-06-14 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: What's Inside? The only smelting information currently available. A complete plain English step-by-step guide for the amateur or professional. Illustrated in both color and B&W. Includes flux formulas for gold, Silver and alloys of both. Information on smelting precipitates, placer gold, scrap, concentrate, amalgam, and carbon ash. This book has a complete glossary, a supplier's index, conversion tables, equipment sources, information on what can or can't be smelted, and a comprehensive chapter on safety. Hints on how to sell your gold for more money, security, record keeping, dealing with the IRS, and more. Very easy to use and understand. Price includes technical support by the author.

Download or read book A Text book of Fire Assaying written by Edward Everett Bugbee and published by . This book was released on 1915 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Engineering and Computer Application written by Kennis Chan and published by CRC Press. This book was released on 2015-07-27 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: The awareness of environment protection is a great achievement of humans; an expression of self-awareness. Even though the idea of living while protecting the environment is not new, it has never been so widely and deeply practiced by any nations in history like it is today. From the late 90s in the last century, the surprisingly fast dev

Download or read book Gold Refining written by Donald Clark and published by . This book was released on 2014-03-10 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold Refining - by Donald Clark - This book covers the methods and systems of gold refining. Chapters Include - Occurrence of Native Gold - Refining Gold with Oxidising and Chloridising Agents - Sulfur Refining - Refining by Cementation Processes - Refining Gold Bullion by means of Oxygen - Miller's Process of Refining - Parting with Nitric Acid - Recovery of Silver from Nitrate Solutions - Refining by means of Sulphuric Acid - Parting gold by Electrolysis - Electrolytic Refining of Gold - The Treatment of Cyanide Precipitates - Other methods of refining gold slimes - The Nitre Cake method of Purifying Slimes - and more

Download or read book Recovering Precious Metals From Waste Liquid Residues a Complete Workshop Treatise Containing Practical Working Directions for the Recovery of Gold written by George Edward Gee and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Download or read book Metals Abstracts written by and published by . This book was released on 1990-07 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Keystone written by and published by . This book was released on 1925 with total page 1650 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Hidden Cost of Jewelry written by Jo Becker and published by . This book was released on 2018 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: I. Introduction -- II. Existing standards - and why they are not enough -- III. How jewelry companies can source responsibly -- IV. Company rankings and performance -- V. A call to action: next steps fro the jewelry industry -- Acknowledgments -- Annex.

Download or read book Recovery of Gold and Silver in Secondary Slag from Gold Refining Process by Co precipitation with Metal Hydroxides written by Romchat Chairaksa and published by . This book was released on 2005 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.