3 edition of Hydrometallurgical Treatment of Electronic Scrap Concentrates Containing Precious Metals. found in the catalog.
Hydrometallurgical Treatment of Electronic Scrap Concentrates Containing Precious Metals.
United States. Bureau of Mines.
|Series||Report of investigations (United States. Bureau of Mines) -- 8757|
|Contributions||Hilliard, H., Dunning, B., Makar, H.|
Hydrometallurgical treatment of electronic scrap concentrates containing precious metals from electronic scrap / ([Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, ), by H. B. Salisbury, Joseph H. Bilbrey, and L. J. Duchene (page images at HathiTrust) Hydrometallurgical treatment of electronic scrap to. The life cycle of a cell phone [electronic resource] Recycle your cell phone [electronic resource]: it's an easy call; Hydrometallurgical treatment of electronic scrap concentrates containing precious metals [microform] / The cell phone: an anthropology of communication / Heather A. Horst and Daniel Miller.
Industrial NSC Hydrometallurgical Precious Metals Recycle. Corby G. Anderson* Kroll Institute for Extractive Metallurgy, Colorado School of Mines, Golden, USA Review Article. SOJ Materials Science & Engineering. Open Access. Introduction. The use of nitric acid in metal sulfide oxidation is not new. Many derivations of the technology have been Author: Corby G. Anderson. Pyrometallurgical treatment is the least selective of the three procedures. Consequently, this type of treatment is typically limited to moderately contaminated scrap. Currently, many secondary alloy producers smelt and selectively oxidize scrap to produce .
The object of this Concentrate Marketing post is to draw attention to the benefits of modern milling practice, thus enabling the miner and mill operator to plan their operations so as to net the highest commercial making such products as will be in demand, they may thus take advantage of conditions existing in the various smelters where the concentrates must be sold. PERUMIN The Hydrometallurgical Treatment of Copper Concentrates: An Alternative to Smelting? 1. New Developments in the Atmospheric and Pressure Leaching of Copper Ores and Concentrates David Dreisinger University of British Columbia Vancouver, Canada 2. Copper Solvent Extraction – Hydroxyoxime The Enabling Technology 3.
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Additional Physical Format: Online version: Hilliard, H.E. (Henry E.). Hydrometallurgical treatment of electronic scrap concentrates containing precious metals. Hydrometallurgical Treatment of Electronic Scrap Concentrates containing Precious Metals.
US Bureau of Mines Report RI E-Waste has become a huge issue in todays market, and companies are making millions recovering precious metals from this scrap.
Very little information on this subject is available to the public. Electronic scrap is of variable composition, often containing 30% plastic, 30% refractory oxide and 40% metals. Such a deposit may be exposed or it may be enclosed within a component (Sum, ). The precious metals in electronic scrap include gold, silver and some PGMs, usually in the form of plating on base metal pins and laminates.
The present invention deals with hydrometallurgical process for the extraction of non-ferrous precious metals originating from electronic waste, mineral earth, mineral materials.
The process includes reacting the dust like fraction of crushed waste or mineral material with concentrated hydrohalogen acid containing a halogen salt of by: Hydrometallurgical Recovery of Metals From E-waste Chapter 10 Indium from LCD panels can be recovered by chelating resins Hydrometallurgical Treatment of Electronic Scrap Concentrates Containing Precious Metals.
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Recovery of precious metals from electronic scrap by hydrometallurgical processing routes Article in Minerals and Metallurgical Processing 22(1) February with 2, Reads. The Bureau of Mines investigated hydrometallurgical procedures for concentrating precious metals from a mechanically processed metal fraction of obsolete military electronic scrap.
Feed material for the leaching procedures described in this report was the high-tension-separated metal concentrate obtained as a fraction from mechanically. At the Umicore precious metals refining plant, Belgium, spent catalysts and e-wastes are smelted in a furnace to produce a concentrate containing Cu, Pt and other metals, which is further processed by hydrometallurgical route to recover the metals (Hageluken, ).
The selection of processing steps depends on the metallic constituents and Cited by: The recovery of precious metals from waste printed circuit boards (PCBs) is an effective recycling process. This paper presents a promising hydrometallurgical process to Cited by: Significant work has been reported on the hydrometallurgical recovery of metals from PCBs 1,22,HNO 3, HCl, and H 2 SO 4 solutions are often used as leaching agents in hydrometallurgical treatments.
Hydrometallurgical treatments have more flexibility during the upscaling and control proces24,Therefore, in the present study, five different acids, i.e., HCl, HNO 3, Cited by: Hydrometallurgy is a technique within the field of extractive metallurgy, the obtaining of metals from their etallurgy involve the use of aqueous solutions for the recovery of metals from ores, concentrates, and recycled or residual materials.
Processing techniques that complement hydrometallurgy are pyrometallurgy, vapour metallurgy, and molten salt electrometallurgy.
Electronic Recovery of Electronic Scrap Reports - Downloadble as Ebook Listed here are 4 very hard to find reports on Recovering Electronic Scrap from Electronics. With precious metals at an all time high and billions of pounds of electronics thrown out each year companies are recycling electronic waste and making a fortune recovering the.
The invention claimed is: 1. A hydrometallurgical process for extracting platinum group metals (PGMs), gold, silver and base metals from a flotation concentrate, the process comprising the steps of: (a) subjecting the concentrate to modified pressure oxidation to selectively separate the base metals from the PGMs, gold and silver in a sulfate medium, wherein sulfide minerals are partially or Cited by: 4.
Hydrometallurgical Treatment of a Zinc Concentrate by Atmospheric Direct Leach Process 3 H O 2Fe 2H 2H O 2Fe 3 2 2 2 2 + ++ +↔ + + (3) The objective of the present study was to investigate the dissolution of zinc and other valuable metals such as copper, indium and silver from a zinc sulphide Size: 82KB.
effiCient mineral processing and Hydrometallurgical RecOvery of by-product Metals from low-grade metal contaIning seCondary raw materials Introduction Use of steel slags.
Source: Euroslag, Statistics SS FeCr Primary Ores Scrap MetalProduction SS,FeCr Metal SS,FeCr By-product: Slag Slag Nb Cr Mo V Current System Production. hydrometallurgy[¦hīdrō′medəl‚ərjē] (metallurgy) Treatment of metals and metal-containing materials by wet processes.
Hydrometallurgy the extraction of metals from ores, concentrates, and various waste products by means of aqueous solutions of chemical reagents with the subsequent separation out of the metals from these solutions.
In "The Bureau of Mines investigated hydrometallurgical procedures for concentrating precious metals from a mechanically processed metal fraction of obsolete military electronic scrap. Feed material for the leaching procedures described in this report was the high-tension-separated metal concentrate obtained as a fraction from mechanically Cited by: 7.
MATTE SMELTING AND HYDROMETALLURGICAL PROCESSING By Gary L. Hundley1 and D. Davis2 ABSTRACT As part of the U.S. Bureau of Mines program to reduce the Nation's reliance on foreign supplies for critical metals, a procedure was devised to separate and recover critical metals from mixed and contaminated super alloy scrap.
Recovery of precious metals from electronic scrap by hydrometallurgical processing routes. In: Minerals and Metallurgical Processing, Vol. 22, no. 1, p. () Permanent URLCited by:. Hydrometallurgical Extraction of Precious, Rare and Base Metals Using an Oxidizing Acid Chloride Heap Leach The ore is crushed and/or ground to improve reactivity and then contacted with a solution containing NaCl-HCl-NaOCl.
The value metals are leached into solution as chloro-complexes. Fitch, R., Verbaan, C., “Method for Recovering Author: David Dreisinger, Niels Verbaan, Charlotte Forstner, Ralph Fitch.Pyrometallurgical treatment in copper smelters is the common process for the recycling of electronic scrap.
But the treatment of electronic scrap especially material with high contaminations oramount of plastic needs always a combination of different steps, i.e. mechanical, thermal and hydrometallurgical. .A process for the hydrometallurgical recovery of metal value, particularly copper, from copper-containing sulphide materials in which the material is conventionally ground and reacted with a solution containing less than 3 moles per liter of chloride ion, and optionally as little as 15 g/liter, together with sulphate ions with continuous oxygen injection and vigerous by: