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Tuesday, May 19, 2020 | History

2 edition of Preconcentration of native copper ore by electronic sorting found in the catalog.

Preconcentration of native copper ore by electronic sorting

V. R. Miller

Preconcentration of native copper ore by electronic sorting

by V. R. Miller

  • 257 Want to read
  • 24 Currently reading

Published by Dept. of the Interior, Bureau of Mines in [Pittsburgh, Pa.] .
Written in English

    Subjects:
  • Copper ores -- Michigan,
  • Ore-dressing

  • Edition Notes

    Bibliography: p. 11-12

    Statementby V. R. Miller, R. W. Nash, and A. E. Schwaneke
    SeriesReport of investigations - Bureau of Mines ; 8296
    ContributionsNash, R. W., Schwaneke, Alfred E, United States. Bureau of Mines
    The Physical Object
    Pagination12 p. :
    Number of Pages12
    ID Numbers
    Open LibraryOL14914930M

    Concentration of Copper Ores in North America Page: 4 p.: ill. This report is part of the collection entitled: Technical Report Archive and Image Library and was provided to UNT Digital Library by the UNT Libraries Government Documents Department. Copper Blocks Ugly Bugs Copper blocks the growth of ugly, energy-robbing algae that invade roofing. To inhibit the airborne algae, gloeocapsa magma, which cause dark, heat-absorbing streaks on asphalt shingles, two manufacturers have developed systems for dispersing algae-preventing copper ions over shingles.

    Enter your mobile number or email address below and we'll send you a link to download the free Kindle App. Then you can start reading Kindle books on your smartphone, tablet, or computer - no Kindle device : No author. Copper was among the first metals used by humans, probably as early as 10, years ago. In ancient times, the island of Cyprus was famous for its copper resources. The word Copper comes from Kupros, the Greek name for Cyprus. The Native Copper specimens on this page are from the famous Keweenaw Peninsula deposits of Upper Michigan.

    Right; detail close-up of highly weathered native copper ore in friable host material (native copper, cuprite, chalcocite +/-malachite). To date, all excavation work has been “free-dig” and no drilling or blasting has been required due to the relatively soft, friable nature of the highly weathered supergene ore body and proximal rock. Reasons for Copper Ore Sorting cont. • Pre-concentrate feed into high-grade and low-grade stockpiles: – Optimize multiple process streams i.e. send ore to either mill, heap leach or smelter. – Allows smaller mills to be built or increase capacity of an existing mill. – Manage ore blending programs more effectively.


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Preconcentration of native copper ore by electronic sorting by V. R. Miller Download PDF EPUB FB2

Get this from a library. Preconcentration of native copper ore by electronic sorting. [Vernon R Miller; R W Nash; Alfred E Schwaneke; United States. Bureau of Mines.] -- The Bureau of Mines developed and evaluated a detecting and sorting device to separate the copper-bearing portion from the barren portion of Michigan native copper ore in the minus 4- plus 1-inch.

Preconcentration of Native Copper Ore by Electronic Sorting. The Bureau of Mines developed and evaluated a detecting and sorting device to separate the copper-bearing portion from the barren portion of Michigan native copper ore in the minus 4- plus 1-inch size range.

Small-scale sorting tests were also conducted on minus 1- plus 1/2-inch. The Bureau of Mines, in cooperation with the Institute of Mineral Research of Michigan Technological University, and the Upper Great Lakes Regional Commission, conducted an investigation of electronic sorting of native copper ore from upper Michigan.

This report is based on research by the Institute of Mineral Research under contract to the Bureau. TOMRA Sorting Solutions utilizes cutting-edge copper sorting technology to get results from copper mined sulphide and oxide deposits. Our copper sorting technology treats feeds from both types of ores based on different physical properties at feed rates of up to t/h.

Open Library is an initiative of the Internet Archive, a (c)(3) non-profit, building a digital library of Internet sites and other cultural artifacts in digital projects include the Wayback Machine, and This process uses electronic ore sorting or “pre-concentration” as an added step before normal concentration to develop a processing system for the native copper ores.

Successful ore sorting can lead to cost reductions in the following areas: Materials handling, and hoisting (if sorting is done underground). Capital and milling operations. Native copper is an uncombined form of copper that occurs as a natural is one Preconcentration of native copper ore by electronic sorting book the few metallic elements to occur in native form, although it most commonly occurs in oxidized states and mixed with other elements.

Native copper was an important ore of copper in historic times and was used by pre-historic peoples. Native copper occurs rarely as isometric cubic. There is copper oxide and copper sulfide for copper ore with main beneficiation method of floatation separation to gain the ideal beneficiation efficiency.

However, many copper mines are not profitable to enrich by floatation separation. And other treatment has to be taken into consideration before floatation separation.

Here is some preconcentration method for some. Applied Sorting Technologies explains that “ore sorting is a process for upgrading mineral bearing materials at large particle sizes, typically between and 10 mm. Some particularly high value materials justify sorting down to even smaller sizes.

[It] involves evaluating the mineral content of individual rocks as they pass through the ore. The four major steps in the production of marketable copper are mining, concentrating, smelting, and refining.

In a few instances, however, leaching takes the place of concentrating, smelting, and refining. At present, although considerable leaching and direct-smelting ores are produced, the bulk of the copper ore mined is concentrated.

The milling of copper ores as practiced in the. The preconcentration or early rejection of gangue minerals in mineral processing operations is investigated using sorting, based on interpretation of near.

Bulk ore sorting could also be used to separate ore types to treat via different process routes, or to reduce dilution and ore loss in mining operations by improving grade control.

It is an efficient way to deal with uncertainties of grade, particularly where the complexity of mine geology makes the estimation of grade difficult. The term “sensor-based (ore) sorting” (SBS) is introduced as an umbrella term for all applications where particles are singularly detected by a sensor technique and ejected by an amplified mechanical, hydraulic, or pneumatic process.

Analogous terms include ore sorting, electronic sorting or automated sorting. Excerpt from Native Copper Objects of the Copper Eskimo This series of indian notes and mono graphs is devoted primarily to thepublica tion of the results of studies by members of the staff of the'museum of the American Indian, Heye Foundation, and is uniform with hispanic notes and monographs, published by the Hispanic Soclety of America, With which organization : Donald A.

Cadzow. native copper in greatest abundance close to the boundary between epidote and pumpellyite metamor­ phic zones of Jolly (). To be most favorable, therefore, a potential target area should contain rocks of this metamorphic grade.

In order to. Copper, Native a mineral of the class of native elements. The mineral contains Fe, Ag, Au, As, and other elements as admixtures or as solid solutions with Cu. Its crystal structure reveals a face-centered cubic lattice.

Native copper occurs in plates and as porous and solid masses; crystals, complex twins, and dendrites are also found. The surface of. Metallic copper is found widely distributed in copper veins, but usually in small amount. Associated with various copper minerals, most commonly with the oxidized ores, cuprite, malachite and azurite.

Most of the copper of commerce is obtained from one or the other of its sulfides. Some, however, is found as the native metal. This is an amygdaloidal ore. Note some of the vesicles have been filled with native copper. Other vesicles have been filled by dark green pumpellyite.

Copper vesicles are 5 mm across. Chunks of copper in an amygdaloidal rock. Larger vesicles to fractures are filled with native copper (vertical field of view 10 cm).

While the deposit qualities for mineral raw materials are constantly decreasing, the challenges for sustainable raw material processing are increasing. This applies not only to the demand for minimizing the consumption of energy, water, and reagents, but also to the reduction of residual materials, especially fine and difficult-to-landfill materials.

Sensor-based ore sorting can be. Figure 1: The orebody is marked up on the pit floor by geologists who detail the location and extent of the ore type and copper grades for mining. To illustrate the value of the Las Minerale high-grade native copper zone being mined; each dump truck load of 30% Cu ore carries an approximate value of ~A$, of copper metal per truck.

Biosphere 2 Uses Miles of Copper Tube and Wire More than 90 miles of copper wiring and five miles of copper plumbing tube are basic to the systems which provide the self-sustaining environment of Biosphere 2, a 5-million square foot glass-enclosure covering more than 3 acres of desert near Tucson, Arizona.; High-Tech Copper Electrodes Help Cadillac Win Award.native copper and included utensils, tools, weapons, piping, ornaments, and jewelry.

The largest deposit of native copper discovered to date was found in Michigan at the Keweenaw mines (Wood, ). Native Americans mined copper in this area between and BC, as evidenced by copper knives, arrows, spearheads, and axes.As part of a strategic research initiative at UBC to design and evaluate integrated underground mining and mineral processing systems, work has been done to determine how to utilize the coarse rejects of pre-concentration in the underground environment.

An amenability study for nine orebodies from four of Xstrata Nickel’s Ontario operations evaluated both processing and .