Download or read book Report on Laboratory Experiments for the Treatment of Gold Ores of the Keystone District with Proposed Flow Sheet for the Recovery of Gold Bullion written by Clifford Sexton and published by . This book was released on 1925 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Extraction of Gold from Carbonaceous Ores written by and published by . This book was released on 1972 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxidation procedures based on the chlorine-hypochlorite system were investigated for improving gold recovery from carbonaceous gold ores. The oxidation pretreatment prior to cyanidation was accomplished by (1) addition of sodium hypochlorite to ore pulp, (2) by addition of chlorine to ore pulp, and (3) by generation of hypochlorite in situ by electrolysis of a brine solution used to pulp the ore. Gold extraction of 90 pct was achieved by cyanidation of carbonaceous ore that had been pretreated with 20 lb per ton sodium hypochlorite at 50° C for 4 hours. Similarly, pretreatment of the ore pulp with 35 lb chlorine per ton at 24° to 30° C and 15 hours reaction time resulted in 89-pct gold extraction by subsequent cyaanidation. Concomitant studies showed that electrolyzing the pulp prepared with a brine solution was equally as effective as electrolyzing hypochlorite and chlorine for oxidizing carbonaceous ore constituents that are deleterious to cyanidation. Gold extraction of 90 pct was obtained by electrolysis when 275 lb of ore was treated at 200 amp for 7 hours in an 8- to 10-pct salt solution. Power consumption was in the range of 60 kwhr per ton.
Download or read book An Investigation of the Effect of the Heating on the Recovery of Gold from Novagold s Murray Brook Resources Operation New Brunswick written by New Brunswick. Minerals and Energy Division and published by . This book was released on 1995 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Murray Brook gold operation in New Brunswick has been experiencing lower gold recoveries during winter months. In the operation, ore is agglomerated and then sent to a heap leach vat and cured prior to leaching, and the company has considered the option of heating the ore prior to agglomeration. This report describes laboratory experiments conducted to examine ore heating effects on agglomeration curing times and gold recovery as a function of leaching solution temperature. Results are reported for 13 agglomeration tests and 10 simulated vat leach tests. Appendices include detailed temperature and solution assay data.
Download or read book Precious Metals Recovery from Low grade Resources written by and published by . This book was released on 1985 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This information circular describes research the Bureau of Mines has conducted to improve technology for recovering precious metals from low-grade resources. Many of the reported findings are recent, and some of te work described is ongoing. Topics discussed include cyanidation of carbonaceous gold ores to enhance gold recovery, a new method for precipitating mercury during cyanide leaching of gold ores, a staged heap leaching process to generate suitable solutions for direct electrowinning of gold, the use of anion-exchange resins to recover gold from cyanide solutions, and precious metals recovery from electronic scrap.
Download or read book Simple Treatment Methods for Oxide Gold and Silver Ores written by Abraham L. Engel and published by . This book was released on 1951 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory Tests and Design of Plant for Treatment of Gold Ore written by William Charles Wyman and published by . This book was released on 1905 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The object of this work was to determine methods and design plants best adapted for the estraction [sic] of gold from a given ore in the most profitable manner. In the following sheets are given in detail the work carried out and our conclusions as to the best method of treating this particular ore"--Leaf [ii].
Download or read book Notes on the Treatment of Gold Ores written by Florence O'Driscoll and published by . This book was released on 1889 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flotation and Cyanidation Tests on a Gold copper Sulfide Ore from Cooke Mont written by Abraham L. Engel and published by . This book was released on 1950 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Cyanide Process of Gold Extraction a Text Book for the Use of Metallurgists and Students at Schools of Mines Etc written by James Park and published by Theclassics.Us. This book was released on 2013-09 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 edition. Excerpt: ... CHAPTER TIL LABORATORY EXPERIMENTS. The cyanide process is essentially a chemical one, and a commodious and well-equipped laboratory forms one of the most important and necessary parts of the whole plant. It is the duty of the metallurgist in charge to determine by actual experiment the lowest strength of cyanide solution to extract an adequate percentage of the gold, and also to devise means of overcoming the problems which are inseparable from the treatment of different classes and grades of ore, with so active and subtle a compound as potassium cyanide. The testing and valuing of the ores before, during, and after treatment must be entrusted to a careful and trustworthy assayer. The testing and making up of the working solutions are very simple operations, that may be left to experienced and intelligent workmen who possess a knowledge of arithmetic extending as far as decimals. With free-milling gold ores the actual working extraction will generally be as high as that obtained in the laboratory, but too much reliance must not be placed on the laboratory experiments in the case of ores containing copper or antimony. The author, s experience is that high extractions may be obtained in the laboratory from ores totally unsuited for treatment by the cyanide process on a working scale. The conditions on the one hand are theoretical, on the other actual, and before adopting the cyanide treatment for a sulphide or mineralized ore, working experiments should be made on parcels ranging from two to five tons, in order to ascei-tain the consumption of cyanide and actual extraction. If the working trials are successful the cyanide treatment may be adopted with confidence. On the other hand, in the case of an ore containing comparatively coarse..
Download or read book Progress Report Metallurgical Division written by and published by . This book was released on 1935 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Process for the Recovery of Gold from Activated Carbon by Leaching and Electrolysis written by J. B. Zadra and published by . This book was released on 1950 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Progress Reports metallurgical Division written by E. S. Leaver and published by . This book was released on 1934 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Process for Recovering Gold and Silver from Activated Carbon by Leaching and Electrolysis written by J. B. Zadra and published by . This book was released on 1952 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recovering Gold from Stripping Waste and Ore by Percolation Cyanide Leaching written by George M. Potter and published by . This book was released on 1969 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study in the Treatment of Gold Ores written by Franklin Douglas Lamb and published by . This book was released on 1934 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatment of Ore from the Rietvallei Gold Mine Barberton District Report of Experimental Work During Period September 1963 to February 1964 written by and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Gold and Silver Processing written by James L. Hendrix and published by . This book was released on 1990 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
