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Book Oxidation Leaching of Copper Sulfides in Ammoniacal Pulps at Elevated Temperatures and Pressures

Download or read book Oxidation Leaching of Copper Sulfides in Ammoniacal Pulps at Elevated Temperatures and Pressures written by Martin H. Stanczyk and published by . This book was released on 1966 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bureau of Mines investigated leaching of selected copper sulfide minerals and a composite of impure flotation concentrates at elevated temperatures and pressures with ammoniacal solutions. Copper extractions of 96 percent were obtained by leaching chalcopyrite at 75° C under oxidizing conditions for 60 minutes. An extraction of 99 percent of the copper contained in the composite concentrate was obtained by leaching the product for 90 minutes at 75° C. In tests of bornite, chalcocite, and covellite, 90 to 97 percent of the copper was extracted at 20° C provided an 8-hour reaction period was used. At 75° C essentially complete dissolution of the copper from these three minerals was accomplished in 60 minutes.

Book OXIDATION LEACHING OF COPPER SULFIDES IN AMMONIACAL PULPS AT ELEVATED TEMPERATURES AND PRESSURES

Download or read book OXIDATION LEACHING OF COPPER SULFIDES IN AMMONIACAL PULPS AT ELEVATED TEMPERATURES AND PRESSURES written by United States. Bureau of Mines and published by . This book was released on 1968 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Reservoir Oil Characteristics Greater Aneth Area Utah

Download or read book Reservoir Oil Characteristics Greater Aneth Area Utah written by Raymond L. Carpenter and published by . This book was released on 1963 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Mineralogical Considerations in Leaching of Primary Copper Sulfides at Elevated Temperatures and Pressures

Download or read book Mineralogical Considerations in Leaching of Primary Copper Sulfides at Elevated Temperatures and Pressures written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The leaching characteristics of four different ores in sulfuric acid systems pressurized with oxygen are described. The variations in the leaching characteristics between different ores can be largely attributed to differences in mineralogy. Certain gangue mineral alteration phases produced during leaching may trap copper from solution, as well as reduce the porosity of the ore. In addition, the formation of secondary copper sulfides, digenite, and covellite may limit the extraction of copper if the supply of oxygen is restricted to chalcopyrite. Apparently, the key consideration for successful leaching is maximizing the rate of oxidation of the sulfides and, at the same time, minimizing the rate of gangue mineral alteration. This can be accomplished at high oxygen pressures and moderate temperatures (70 to 90°C) and low pH (less than or equal to 2.0). The ideal ore mineralogy is one that is low in carbonates and easily altered Fe-Mg minerals such as biotite and hornblende, and one that has acceptable pyrite/chalcopyrite ratios. (auth).

Book Report of Investigations

Download or read book Report of Investigations written by and published by . This book was released on 1987 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Information Circular

Download or read book Information Circular written by and published by . This book was released on 1967 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Supercompressibility Factors for Helium nitrogen Mixtures

Download or read book Supercompressibility Factors for Helium nitrogen Mixtures written by John E. Miller and published by . This book was released on 1963 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book High temperature Corrosion Studies

Download or read book High temperature Corrosion Studies written by Robert M. Doerr and published by . This book was released on 1966 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Hydrometallurgy

Download or read book Hydrometallurgy written by T Havlik and published by Elsevier. This book was released on 2014-01-23 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is concerned with the theoretical principles of hydrometallurgical processes and engineering aspects. The hydrometallurgical processes of production of copper are discussed and leaching of chalcopyrite as the main sulphide mineral of copper processed in industry is used as an example. The book is suitable as a university textbook for students of metallurgy. Examines the different techniques involved Discusses the production of specific metals using hydrometalluric processes Looks at the future of hydrometallurgy

Book List of Publications

Download or read book List of Publications written by United States. Bureau of Mines and published by . This book was released on 1960 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Principles of Extractive Metallurgy Hydrometallurgy

Download or read book Principles of Extractive Metallurgy Hydrometallurgy written by Fathi Habashi and published by . This book was released on 1969 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Identification of Sulfur Compounds in Petroleum

Download or read book Identification of Sulfur Compounds in Petroleum written by Alfred L. Service and published by . This book was released on 1966 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Mineral Industries Bulletin

Download or read book Mineral Industries Bulletin written by and published by . This book was released on 1972 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: