3 edition of Recovery of Principal Metal Values From Electrolytic Zinc Waste. found in the catalog.
Recovery of Principal Metal Values From Electrolytic Zinc Waste.
United States. Bureau of Mines.
|Series||Report of investigations (United States. Bureau of Mines) -- 8582|
Resource recovery and recycling from millions of tons of wastes produced from industrial activities is a continuing challenge for environmental engineers and researchers. Demand for conservation of resources, reduction in the quantity of waste and sustainable development with environmental control has been growing in every part of the world. methods for the recovery of the metal of electrolytic grade. In this furnace treatment, the zinc will oxidize and be lost in the slag. However, this can be done only by large copper producing companies which have the facilities for the recovery of copper from sulfide ores. The brass would have to be shipped from the.
A continuous electrolytic process for the production of beryllium metal /, by M. C. Kells, C. Whitman, Recovery of principal metal values from waste hydroprocessing catalysts / (Washington, D.C.: U.S. Dept. of the The cyanide process, copper smelting and refining, zinc smelting and refining. (Scranton: International Textbook. Controlled melt-carburization subsequent to oxidation improved the metal-phase recovery of Ni and Co to sell over 90% and decreased electrolytic solubilitymore» Research is continuing to improve deposit quality in sustained deposition and to recover Cr and other metals from refining slags and anode sludges. «.
off-site metals recovery processes This section presents a short description of each of the metals recycling companies for which information is available. This is intended to provide the reader with information and data on a cross section of available services. BASE METALS RECOVERY FROM ZINC HYDROMETALLURGICAL PLANT RESIDUES 19 cementation of copper, cadmium and cobalt on zinc powder, with copper and cadmium being recovered as by-products. Due to the difficult situation in the country since the nineties, the collapse of the mining industry was the main reason why zinc production in Kolwezi went Size: 1MB.
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Recovery of principal metal values from electrolytic zinc waste. [Avondale, MD]: U.S. Dept. of the Interior, Bureau of Mines, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: T L.
Recovery of principal metal values from electrolytic zinc waste / By T. (Terry L.) Hebble, D. (Danton L.) Paulson and V. (Vernon R.) Miller Abstract. the potential recovery of metals from secondary sources as well as from domestic mineral resources. In a Bureau study (1),4 waste hydroprocessing catalysts were identified as a potential source of Ni, Co, Mo, W, and V.
The study revealed that every year more than 26 million lb of these metals are discharged in waste. Electrolytic Zinc Waste Metal Recovery. We investigated a hydrometallurgical procedure to recover Co, Ni, and Cu from an electrolytic zinc industrial copper filter cake.
The copper filter cake is presently unmarketable or of low value because economic and environmentally acceptable processing technology is lacking. Abstract. A process has been developed for recovering zinc and other metal values from chloride-containing solid zinc waste materials such as zinc ash from galvanizing baths, and flue dusts from zinc smelting and Waelz processes.
The waste is leached with a liquid organic phase containing a cation exchanger; the commercial carboxylic acid Versatic Cited by: 40 million tonnes per year of a variety of wastes for recovery of constituents contained in them are either.
exported or imported by Member countries, Of this total some 20% are concerned with the recycling of. metals and metal compounds [Recovery Operation R4 in. Spent zinc–carbon dry cell batteries were characterized in the process of recovery of metal values.
Zinc, manganese and steel were the major metallic materials constituting 63 % of the weight of spent batteries. Different components of the spent batteries were separately processed to extract the metallic values. Metallic zinc production from sulfide zinc ore is comprised by the stages of ore concentration, roasting, leaching, liquor purification, electrolysis and melting.
During the leaching stage with sulfuric acid, other metals present in the ore in addition to zinc are also by: Lead and Zinc Smelting. Secondary Lead Processing. The secondary production of lead begins with the recovery of old scrap from worn-out, damaged, or obsolete products and with new scrap.
The chief source of old scrap is lead-acid batteries; other sources include cable coverings, pipe, sheet, and other lead-bearing metals. Solder, a tin-based. Main metals are zinc and copper Produces also gold, silver, lead and nickel Simultaneous metals recovery from oxide dust (Zn, Pb, Cd, Ag, As, Hg, In, Ga, Ge).
sulphuric acid and the metal value from the obtained calcine can be Size: 1MB. The Bureau of Mines investigated a hydrometallurgical procedure to recover CO, ni, and cu from an electrolytic zinc industrial copper filter cake.
The copper filter cake is presently unmarketable or of low value because economic and environmentally acceptable processing technology is lacking. During reduction with Zn powder, more than 93% of Pb, Cu, Ag and Cd can be simultaneously recovered.
Then the NH (4)Cl leaching residue were leached again in 30wt% aqueous NaOH. The novel zinc recovery system involves the initial neutralization of the waste stream to pH sedimentation of insolubles, the crystallization of zinc hydroxide in a high pH environment, the sedimentation of zinc hydroxide and the solubilization of the zinc with sulfuric acid.
electrolytic recovery of 99, % pure zinc metal. Direct Leaching in Kokkola makes jarosite and sulphur residue that is landfilled as combined waste = Jarosite, [NaFe3(SO4)2(OH)6] + sulphur. Boliden Kokkola has invested in double filtration process making the residue mechanically more stable and reduces the volume Size: 4MB.
98% of the metal values available from the sludge. A small fraction of un leachable material, usually consisting of acid insoluble comprises the filter cake. The leach solution is usually diluted to yield a total dissolved solids level of 40 g/lit.
Filter cake wash water is used in this second dilution to enhance overall metal recovery. Waste‐Less Technology for Processing of Subgrade Lead Concentrates and Flotation Middlings Containing Precious Metals (Pages: ) A.V.
Tarasov A.D. Besser. Metal recovery from nickel waste, we found, is sensitive to pH value and the following Figure shows the total metal plating speed at different pH values. pH control was maintained by the addition of Ammonium hydroxide (NH 4 OH) as the original pH of the nickel waste was low at The electrolytic metal recovery process is more efficient, the higher the concentration of metal in the waste stream.
For instance, it would not work well with a flowing waste stream containing a relatively dilute amount of dissolved metals (or the relatively dilute 10% mentioned above). Spent zinc–carbon dry cell batteries were characterized in the process of recovery of metal values.
Zinc, manganese and steel were the major metallic materials constituting 63 % of the weight of spent batteries. Different components of the spent batteries were separately processed to extract the metallic values.
A maximum of 92 % of total amount of zinc contained in the anodes could Cited by: 2. USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords melt zinc cathode recovering anode Prior art date Legal status (The legal status is an assumption and is not a legal.
A process for reclaiming the materials in spent alkaline zinc manganese dioxide (Zn–Mn) batteries collected from the manufacturers to prepare valuable electrolytic zinc and LiNi Mn O 4 materials is presented.
After dismantling battery cans, the iron cans, covers, electric rods, organic separator, label, sealing materials, and electrolyte are separated through the washing, magnetic Cited by: Recovery of Metal Values from Spent Battery Leach Solutions by Solvent Extraction By Chu Yong Cheng ABSTRACT The recovery of metal values using solvent extraction technologies from leach solutions of lithium-ion and zinc-carbon batteries has been investigated and File Size: KB.Table 3.
Metal-Bearing Hazardous Wastes From Major Industry Categories EPA Hazardous Listed Waste No. Hazardous Waste Description Constituent(s) F F F F F K K K K K Wastewater treatment sludges from electro- plating operations except the following: (1) sulfuric acid anodizing of aluminum; (2) tin plating on carbon steel; (3) zinc plating (segregated basis.