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Author : Danton L. Paulson
Publisher : Unknown
Page : 490 pages
File Size : 43,9 Mb
Release : 1977
Category : Electronic
ISBN : STANFORD:36105006336643
Author : Danton L. Paulson,W. E. Anable
Publisher : Unknown
Page : 28 pages
File Size : 54,9 Mb
Release : 1977
Category : Government publications
ISBN : UOM:39015078473108
Author : Anonim
Publisher : Unknown
Page : 720 pages
File Size : 47,9 Mb
Release : 1976
Category : Mineral industries
ISBN : UCSD:31822009761065
Author : Gary B. Murrie,Gordon H. Dechman,John A. Breslin,Laurence L. Oden,Mark I. Copeland,Philip C. Tully,R. H. Sprute,Raymond M. Stateham,Wallace W. Roepke,Anthony J. Strazisar,D. J. Kelsh,David P. Lindroth,John A. Lombardi,John S. Howe,Lowell Stroud,Martin Samuel Oudenhoven,Philip E. Sanker,William P. Diamond,J. H. Russell,James C. Sarvis,Stephen W. Lambert,Theodore A. Myren
Publisher : Unknown
Page : 604 pages
File Size : 53,5 Mb
Release : 1919
Category : Aluminum oxide
ISBN : OSU:32435025835232
Author : United States. Bureau of Mines
Publisher : Unknown
Page : 28 pages
File Size : 48,7 Mb
Release : 1977
Category : Mineral industries
ISBN : UOM:39015012634641
Author : United States. Bureau of Mines
Publisher : Unknown
Page : 576 pages
File Size : 44,5 Mb
Release : 2024-05-12
Category : Mineral industries
ISBN : IND:30000065660635
Author : United States. Bureau of Mines
Publisher : Unknown
Page : 136 pages
File Size : 52,6 Mb
Release : 1980
Category : Fuel
ISBN : UOM:39015095154079
Author : Anonim
Publisher : Unknown
Page : 40 pages
File Size : 45,8 Mb
Release : 1976
Category : Copper
ISBN : UOM:39015078473058
The Bureau of Mines studied the feasibility of producing copper matte in an electric furnace from blends of copper concentrate similar to those currently smelted in a gas-fired reverberatory system at an installation in Tacoma, Wash. A 800-kva electric-arc furnace was used to determine the distribution of constituents when arseniferous concentrates are being smelted in an electric-arc furnace.
Author : United States. Bureau of Mines
Publisher : Unknown
Page : 1078 pages
File Size : 54,6 Mb
Release : 1980
Category : Government Publications
ISBN : MSU:31293000340137
Author : A. G. E. Robiette
Publisher : John Wiley & Sons
Page : 296 pages
File Size : 54,7 Mb
Release : 1973
Category : Science
ISBN : UOM:39015006424116
Author : Anonim
Publisher : Unknown
Page : 1746 pages
File Size : 47,5 Mb
Release : 1977
Category : Government publications
ISBN : UCR:31210024274514
Author : Zuhair A. Munir,Eugene Fuss,Lew Ivers
Publisher : Unknown
Page : 308 pages
File Size : 51,8 Mb
Release : 1978
Category : Electronic
ISBN : IND:30000090304605
Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 43,7 Mb
Release : 1976
Category : Electronic
ISBN : OCLC:921207109
Copper-nickel-sulphide ores mined in the Rustenburg district of South Africa are generally smelted in electric furnaces because of the high-temperature slag produced, the availability of cheap electric power, and the smaller pollution problems. Apart from melting, the functions of the electric furnace are to recover most of the matte content in the converter slag by physical and chemical interaction with the furnace bath and to provide adequate time for the optimum separation of matte and slag. Smooth, efficient operation will depend on fluid slags for settling, balanced by high resistivities to obtain adequate concentration and distribution of power by way of current heating. To obtain a greater understanding of the processes involved, an investigation was undertaken at Rustenburg Platinum Mines on the smelting of copper-nickel concentrates in a 19.5 MVA furnace with six in-line electrodes. The matte- and slag-tapping temperatures, slag temperatures, slag analyses, electrical data, and electrode position were measured. Radioactive tracers were introduced into the slag, and quantitative results relating to the flow pattern within the furnace were obtained. These studies were augmented by scaled laboratory investigations relating to the determination of cell constants and current distribution within the furnace. Instantaneous field and power distribution plots were determined by use of an on-line mini-computer. The applicability of these results to furnace operation is discussed. The furnace investigations showed that the slag was very homogeneous except at either end of the furnace where there was an increase in concentration of chromium oxide at the slag-matte interface. This increase was shown to originate from the local ore. Radioactive tracer tests confirmed that the slag was very well mixed along the length of the furnace, about 65 per cent of the slag volume being accounted for by backmix. The tests offered a means of comparison of the flow conditions in the reverberatory and electric furnaces. Model experiments gave insight into the mode of current flow and power distribution within the furnace. The model experiments and actual furnace measurements enabled a cell constant to be derived for the calculation of the furnace resistance, which was in reasonable agreement with the actual operation.
Author : S. F. Ravitz
Publisher : Unknown
Page : 52 pages
File Size : 41,9 Mb
Release : 1947
Category : Nickel
ISBN : UOM:39015078495135
Author : Anonim
Publisher : Unknown
Page : 46 pages
File Size : 43,6 Mb
Release : 1974
Category : Metallurgical furnaces
ISBN : 0869993259