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Saturday, August 1, 2020 | History

2 edition of Electric smelting of low-grade chromite concentrates found in the catalog.

Electric smelting of low-grade chromite concentrates

John P. Walsted

Electric smelting of low-grade chromite concentrates

by John P. Walsted

  • 23 Want to read
  • 19 Currently reading

Published by Bureau of Mines in Washington, DC .
Written in English

    Subjects:
  • Chromite.,
  • Smelting.,
  • Electrometallurgy.

  • Edition Notes

    1

    Statementby J. P. Walsted.
    SeriesReport of investigations (United States. Bureau of Mines) -- 5268
    ContributionsUnited States. Bureau of Mines.
    The Physical Object
    Pagination28 p. :
    Number of Pages28
    ID Numbers
    Open LibraryOL21746308M

    The Complete Book On Non-ferrous And Precious Metals With Electroplating Chemicals by Dr. H. Panda, ISBN: , Rs. / US$. About this book In the last decade, global metallurgical industries have experienced fast and prosperous growth. High temperature metallurgical technology is the backbone to support the technical, environmental, and economical needs for the growth.

    However, the existing methods of making iron could not satisfy the needs of the market. Large-scale production of iron began only in the midth century when the Bessemer, Thomas, and open-hearth processes were developed. In the 20th century the electric smelting process, which yielded high quality steel, was discovered and became widespread. Concentrates are shipped from the company's dedicated port, 15 km from the mine. As with most of the large mining companies in the Philippines, Atlas operates its own generating station ( MW, fuelled by oil and coal) and has provided housing, schools, a hospital and recreational facilities for its work force and their dependents.

    This banner text can have markup.. web; books; video; audio; software; images; Toggle navigation.   Rent or buy 4th International Symposium on High Temperature Metallurgical Processing -


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Electric smelting of low-grade chromite concentrates by John P. Walsted Download PDF EPUB FB2

Electric smelting of low-grade chromite concentrates (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: John P Walsted; United States.

Bureau of Mines. Additional Physical Format: Print version: Walsted, John P. Electric smelting of low-grade chromite concentrates. Washington: Bureau of Mines, The Wile electric furnace is adapted to, and in many instances has been used successfully for, the smelting of gold and silver ores, concentrates, cyanide precipitates, tin concentrates, soft-metal drosses, lead and lead-silver ores, battery plates, copper scale, copper ores, manganese copper, and for the recovery of metallic values remaining.

Electric Gold smelting Furnace. The flux is a mixture of several reagent chemical such as borax, silica, sodium nitrate, sodium carbonate and fluorspar. Borax is a white crystalline mineral used in glass and ceramic enamel mixes. In the smelting process, borax helps to reduce the gold smelting point of the charge and capture metallic oxides.

In book: Environmental Materials and Waste, pp Ferrochrome is made by smelting chromite ore in an electric arc. furnace with flux materials process for low-grade chromite.

Electric smelting in an open-arc open-bath direct current (DC) furnace provides the required flexibility for this type of processing.

DC arc furnace technology was first used for smelting applications in the mid s, and has subsequently been applied industrially to the smelting of chromite for theFile Size: 4MB. Roasting and Electric Furnace Smelting. Roasting/ electric furnace smelting accounts for about 1/4 of Ni sulfide smelting [28].

It entails (1) partially oxidizing Ni concentrate in a fluid bed roaster and (2) melting the resulting calcine plus silica flux in an electric furnace to.

To produce 1 tonne of refined Cu from low-grade copper ore (% Cu), the average GHG emission is reported to be tonnes of equivalent CO 2. 5, 6 On the other hand, hydrometallurgical.

Additional heat is supplied by oil burners or by coal mixed with the ore concentrates. Figure illustrates the Noranda process reactor. Flash furnace smelting combines the operations of roasting and smelting to produce a high-grade copper matte from concentrates and flux.

In flash smelting, dried ore concentrates and finely. From Introduction: "The bulletin presents, first, a critical discussion of the possibility of smelting copper ores in the electric furnace; second, the results of the experimental work of other investigators on the electric smelting of copper; third, the results of experiments by the authors on the electric smelting of native copper concentrates and sulphide copper ores; and, fourth, a Author: Dorsey A.

Lyon, Robert M. Keeney. Ferrochrome alloy is predominantly produced in AC submerged-arc furnaces where the electrodes are buried in the burden of lumpy materials comprised of chromite ores or pellets, reductants and fluxes.

Mintek has developed and patented the smelting of chromite ores in DC electric open-arcFile Size: KB. Sulfur partition ratios between 5 and 50 were determined at carbon saturation when large quantities of nickel sulfide were added to laboratory scale reduction experiments of low grade domestic chromite concentrates.

The effect of basicity and temperature between ° and °C on the partition ratio was investigated. Stainless steel crude alloy recovery from direct smelting of low-grade chromite, nickel laterite and manganese ores was investigated. The mixed low-grade ores were directly smelted in an elevator furnace at smelting temperatures ranging from to °C.

Smelting experiments were conducted in a laboratory elevator furnace equipped with 8 U-shaped high-quality molybdenum Cited by: 1. The achievable Cr:Fe ratio of the concentrates varies from to from a low-grade deposit with Cr:Fe ratios of to by using gravity separation [4,10,11,12,13].

There are few published data available about processing low-grade deposits or tailings in order to beneficiate by: 1.

Bureau of Mines, Report of Investigations ; “Beneficiation of Chromite Ores from the Western United States” by Batty, Mitchell, Havens, and Wells, Google ScholarCited by: 1. ri / electric smelting of montana chromite concentrates, pb, $ 10 ri / oil-well logging with model equipment: tests on noninvaded thin beds with shielded electrodes, pb, $ 18 ri / experimental extraction of gold and silver ores from california and nevada ores, pb, $ Reverberatory Furnace Smelting The reverberatory furnace dominated copper matte smelting for much of the s, because it was an excellent process for smelting fine concentrate from flotation.

It is a fossil fuel fired hearth furnace for smelting concentrate and producing copper matte. The reverbs began to File Size: KB. Gold extraction refers to the processes required to extract gold from its may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore.

Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of.

INCO OXYGEN FLASH SMELTING The International Nickel Company (Inco) of Canada developed the oxygen flash smelting process in the 's to treat copper and nickel concentrates. By the early 's, Inco had success- fully demonstrated the method on a commercial scale at the Copper Cliff plant.

ri / electric smelting of ilmenite concentrates from valley county, idaho, pb, $ 10 ri / manganese exploration in the philipsburg district, granite county, montana, pb, $ 35; or pdf, $ 10 ri / cutting action of rotary bits in oil shale, pb, $. The Complete Book on Non-Ferrous and Precious Metals with Electroplating Electric Smelting of Ilmenite Acid Leaching of Ilmenite Molybdenum occurs mainly as molybdenite (MoS2) in disseminated porphyry deposits.

They are characterized by their low grade and large volume. In these deposits, the molybdenum content varies from per cent.Subpart FFFFFF - Secondary Copper Smelting Area Sources. 40 CFR through 40 CFR (a facility that processes copper scrap in a blast furnace and converter or that uses another pyrometallurgical purification process to produce anode copper from .The Outotec Ausmelt Nickel Converting Process is used for the converting of low-grade matte into high-grade matte and is used in the Anglo Platinum Converting Process (ACP) in Rustenburg, South Africa.

The variation in nickel sulphide concentrate properties presents challenges in File Size: KB.