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A process of separating copper minerals from pyrite wherein a flotation concentrate containing copper minerals and pyrite is reground in the presence of lime and subsequently conditioned at a pH of 12.0 or more for a predetermined period sufficient to depress the pyrite, with optional additions of sulf-hydryl collector, cyanide and dispersing agent, and the conditioned pulp is subjected to ...
MIT researchers have identified the proper temperature and chemical mixture to selectively separate pure copper and other metallic trace elements from sulfur-based minerals using molten electrolysis. This one-step, environmentally friendly process simplifies metal production and eliminates the toxic byproducts such as sulfur dioxide.
1. This is a suit for the infringement of Letters Patent, No. 962678, Claims 1 and 2, brought by the petitioner in the District Court of Maine, where the petitioner prevalid (23 F.(2d) 931), the Court acting partly in deference to the decision of the Circuit Court of Appeals for the Third Circuit in Miami Copper Co. v. Minerals Separation, Ltd., 244 F. 752.
High Gradient Magnetic Separation of small (5-38 µm) weakly magnetic copper mineral particles from a copper concentrate and ore has been performed. In previous work coarser fractions of these minerals, bornite and chalcopyrite, were separated successfully. The recovery of the smaller particles in the magnetic fraction decreases but their grade increases compared to the results obtained on the ...
and quartz for most of the common sulfide minerals, including copper and arsenic-bearing minerals. This work found that it is possible to make a separation between copper-arsenic minerals and other copper minerals utilizing controlled pulp potential procedures. These procedures involve separations at high and low pulp potential regions . 1.
The separation of copper-bearing from zinc sulphides is effected by two-stage selective flotation, the zinc minerals being depressed and the copper minerals brought up in the first stage with reagents similar to those required in the lead flotation section of a lead-zinc plant; the zinc sulphides are floated in the second stage in the ordinary ...
Abstract: High Gradient Magnetic Separation of chalcopyrite and bornite, both weakly magnetic copper minerals with mass susceptibilities of about 0.1 × 10 -6 m 3 /kg and 0.2 × 10 -6 m 3 /kg respectively, has been performed. Initially pure mineral samples were processed before turning to copper samples with decreasing content of the minerals. These were: a concentrate, flotation tailings and ...
Smelting: Then, copper concentrates are mixed with silica (sand) and limestone and heated in a furnace to form two naturally-separating layers. One layer is a waste containing iron and silica compounds and is discarded as slag slag Byproduct left after a desired metal is thermally separated from its raw ore. .
Separation of copper sulfide minerals from the gangue is normally carried on in a series of large rectangular steel tanks of capacities from 2 to 28 m 3 equipped with stirrers and compressed air inlets (Fig. 13.4). These provide vigorous agitation and air blowing through the …
6. The first group comprise minerals of beryllium, lithium, and zirconium, while the second group comprise those of caesium, copper, and nickel. Sulphides: These comprise the most important minerals of antimony, arsenic, cobalt, copper, lead, mercury, molybdenum, nickel, silver, and zinc. Figure 6 shows some common sulphide minerals.
The methods mentioned so far are all physical separation methods. Sometimes they are sufficient to separate minerals for use, like coal or iron ore. But more often the element that we are looking for is found as a chemical compound, and so will have to be separated by further chemical reactions. For example, copper in Cu 2 S or aluminium in Al ...
Mineral Separation Corp. v. Magma Copper Co., 280 U.S. 400 (1930) Mineral Separation Corp. v. Magma Copper Co. No. 71. Argued January 9, 1930. Decided February 24, 1930. 280 U.S. 400. Syllabus. 1. The effect of a patent as a disclosure depends on what is made known by the specification, and is not limited to the precise scope of the claims. P ...
The process of this invention for the separation of copper and iron minerals from molybdenite is better illustrated with reference to the diagramatic illustration of an embodiment of the process shown in FIG. 1. A pulp concentrate of copper which contains molybdenite 1 passes a series of attrition mills, 2 where a set amount of surfactant 2' is ...
Froth flotation is a process for selectively separating of hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.
1 1 Froth Flotation – Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a
The invention discloses a separation method of copper-zinc sulphide minerals, which belongs to the technical field of mineral dressing. The separation method utilizes crude ore of the copper-zinc sulphide minerals as raw materials and includes steps of performing flotation separation for the crude ore of the copper-zinc sulphide minerals to obtain copper concentrates or obtain copper ...
That is because they have high copper content, and the copper in them can more easily be separated from unwanted minerals. However, copper …
Other factors related to the specific copper and lead mineral processing characteristics must be considered when deciding on which copper or lead mineral will be floated from the other, for instance relative mineral flotation kinetics. The subsequent Cu-Pb separation flotation step is usually conducted at alkaline pH regardless.
High Gradient Magnetic Separation of chalcopyrite and bornite, both weakly magnetic copper minerals with mass susceptibilities of about 0.1 × 10-6m3/kg and 0.2 × 10-6 ...
Mineral separation, carbon content extraction. Aluminum-plastic materials. For example: medical blister, milk packing bag, toothpaste tube, aluminum plastic pipe, aluminum plastic composite pane, etc. Copper-plastic compounds, including waste printed circuit board, waste …
Paper – 110 THE EFFECT OF NON-SULPHIDE GANGUE MINERALS IN ENARGITE SEPARATION FROM OTHER COPPER SULPHIDES IN COMPLEX ORE SYSTEMS M. Tayebi-Khorami1*, E. Manlapig1, E. Forbes2, D. Bradshaw3 ...
It is proved that the method of heavy medium separation can effectively separate diamond and other precious stones and treat copper, lead and zinc ores. In some cases, effective recovery of gold and PGM, the improved method can also be effective separation of non-metallic minerals, like barite, fluorite and other industrial minerals.
Sulphidisation and flotation of oxidised copper sulphides T. Moimane, Y. Huai and Y. Peng (The University of Queensland, Australia) Effect of hydrogen peroxide on the separation of copper sulfide minerals and arsenic-bearing copper minerals using flotation
In the case of copper–molybdenum separation, chalcopyrite (CuFeS 2) and molybdenite (MoS 2) are the main copper and molybdenum minerals found in complex sulfide ores.The natural hydrophobicity of molybdenite results from its layered crystal structure.
Diana - An important resource that we find in deep dark places are the metals and minerals we need for industry and everyday life, which means that mining minerals like copper and platinum is a multi-billion pound industry. Dave and Meera have been out exploring how you separate the metal we do want from the rocks we don't...Meera - This week, Dave and I are exploring the
According to the different specific gravity of mineral raw materials, the shaking table and spiral chute can be used for separation. Gravity separation is the main mineral processing method for the separation of wolframite, cassiterite, placer, coal, and manganese ore, and is also widely used in the separation of a rare metal sand mine.
Professor Jan Cilliers explains the mineral separation process to see how bubbles and can be used to get the minerals you want on a large scale and how ...
In 1947, Colmer et al. isolated At. ferrooxidans from acid mine drainage and found that the strain could oxidize Fe 2 + into Fe 3 + to leach copper from pyrite, which was the first reported bioleaching (Colmer and Hinkle, 1947).Subsequently, bioleaching of minerals developed rapidly (mainly sulfide minerals, including acid-soluble sulfide minerals and acid-insoluble sulfide minerals) (Bryner ...
