Download or read book High temperature Cyanide Leaching of Platinum group Metals from Automobile Catalysts process Development Unit written by Robert J. Kuczynski and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High temperature Cyanide Leaching of Platinum group Metals from Automobile Catalysts process Development Unit written by Robert J. Kuczynski and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High temperature Cyanide Leaching of Platinum group Metals from Automobile Catalysts laboratory Tests written by Dennis P. Desmond and published by . This book was released on 1991 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High temperature Cyanide Leaching of Platinum group Metals from Automobile Catalysts process Development Unit written by Robert J. Kuczynski and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High temperature Cyanide Leaching of Platinum group Metals from Automobile Catalysts written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High temperature Cyanide Leaching of Platinum group Metals from Automobile Catalysts Pilot Plant Study written by R. J. Kuczynski and published by . This book was released on 1995 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations High Temperature Cyanide Leaching of Platinum Group Metals From Automobile Catalysts Pilot Plant Study RI 9543 U S Department of the Interior 1995 written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High tempareture Cyanide Leaching of Platinum group Metals from Automobile Catalysts written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on 1992 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of Investigations written by and published by . This book was released on 1992 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recycled Metals in the United States written by and published by . This book was released on 1993 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1993 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1992 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Gold Ore Processing written by Mike D. Adams and published by Elsevier. This book was released on 2005-12-02 with total page 1077 pages. Available in PDF, EPUB and Kindle. Book excerpt: The gold processing industry is experiencing change. As free-milling and oxide ores become depleted, more complex polymetallic and refractory ores are being processed, coupled with increasing pressure for stricter environmental compliance. Recent years have also seen a steady reduction in mineral processing and metallurgy graduates and a gradual loss of older operating experience. A contribution to documenting current and future best practice in gold ore processing seems timely.The focus of this volume is on advances in current gold plant operation, from conception to closure; chapters also cover innovations at the bench and pilot-scale level that would be expected to find commercial application at some stage. Sufficient coverage is also given to the chemistry and engineering aspects. The general principle behind the structure of the volume is that of flowsheeting based on unit operations and applied to a mineralogical classification of gold ore types. From concept to closure, this book covers all unit operations, mineralogies and processes that are relevant to dealing with today's complex orebodies.Practical experience is vital to the successful development, operation and closure of any operation. The 42 chapters have been contributed by a total of 66 authors and co-authors who are experts from countries spanning the globe, and representing exhaustive practical knowledge covering many disciplines relevant to gold processing.* Current best practice as elucidated by a select panel of experts in the field* Innovations at the bench and pilot-scale level that would be expected to find commercial application at some stage* Mineralogical-based approach to flowsheeting
Download or read book Minerals Today written by and published by . This book was released on 1993 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Geology Geochemistry Mineralogy and Mineral Beneficiation of Platinum group Elements written by Canadian Institute of Mining, Metallurgy and Petroleum and published by . This book was released on 2002 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovery of Platinum Group Metals from Automobile Catalytic Converters written by and published by . This book was released on 2007 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Platinum has played important roles in human life due to their specific physical and chemical properties. The demand of platinum was reported to be continuously increasing, especially the use in automobile catalytic converters, while natural resources of platinum becomes limited. Therefore, the study of platinum recovery from spent automobile catalytic converter, which is an important secondary resource of platinum, becomes significant. In this study, platinum recovery process consists of two stages; platinum extraction by leaching with aqua regia and then platinum separation from the solution by co-precipitation. In the platinum extraction process, influences of time and temperature were investigated to identify optimum condition for the leaching process. The result showed that the maximum platinum extraction was obtained when leaching at 90 °C for 6 hours. However, at this condition, aluminum which is the major component in catalytic converter was also highly extracted. The coexistence of aluminum in the leachate will retard the co-precipitation of platinum (IV) with iron hydroxides, which is the second stage of platinum recovery. Hence, the optimum leaching condition here was considered to be leaching at 90°C for 1 hour. In the second stage of platinum recovery, platinum co-precipitation with various metal hydroxides was selected for this study. The metal hydroxides used in this study were hydroxides of Al, Mg, Fe (II) and Fe (III), which are major components in the catalytic converter and also dissolved in the leachate. Influences of pH and precipitation time were investigated. The result showed that almost all platinum (IV) was effectively co-precipitated with iron hydroxides at pH 6 in 1 hours. The chemical state of platinum investigated by XPS showed that co-precipitated platinum was partly reduced to platinum (II) with iron (III) hydroxide and some was further reduced to metallic platinum with iron (II) hydroxide. These facts suggest that iron hydroxide is considered as an effective carrier for co-precipitation of platinum.
