For this study we collected 550 samples, including ore and wall rocks, from 32 tunnels at seven underground mining levels between depths of − 467 and − 827 m in the Hongtoushan copper–zinc deposit. Ninety-one rock and ore samples were selected from which thin sections and polished sections were made to examine the minerals, textures, …
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Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the …
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The pyritic copper–gold ore used in this study was obtained from a copper–gold mine in Asia. The pyrite rougher concentrate was obtained by two-stage copper and pyrite rougher flotation using the conditions in Table 1 and reported in Agorhom et al. (2013). However, in the present studies, the focus is to examine flotation …
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In 1895 Robert Sticht arrived as chief metallurgist and perfected pyritic smelting. By 1901 the new township of Queenstown was flourishing, ... leaving underground workings to supply the ore. Its copper contained many impurities, and from 1928 further refining by electrolysis produced copper 99.8 percent pure. From 1934 to 1972 the West Lyell ...
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pyritic mineralized ... deposits and is an indicator of the blind metallic ore most of the time (Sillitoe ... in the upper portions of porphyry copper systems (Sillitoe 1995(Sillitoe ...
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The extraction of copper achieved was over 85%. Copper dissolution in this system is affected by particle size, leaching time and oxygen pressure. This paper presents the preliminary research on acid leaching of pyritic copper ore in an autoclave system under laboratory conditions.
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flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic ...
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material for pyritic smelting. Copper ores can be grouped commercially into smelting, concentrating, and leaching ores. All three kinds of ore often occur at the same mine, …
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Billions of tons of flotation tailings have been accumulated in Russia (and globally), mainly due to ore-processing plants' operation. Estimates of average mine tailings production worldwide range from 5 to 7 billion tons per year [].Mine tailings may contain metals, such as copper, nickel, and zinc, in relatively high concentrations (from 0.5% to …
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Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on rougher stage of industrial copper flotation circuit. Samples were taken from different streams and the structure of ...
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Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on rougher stage of industrial copper …
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Flotation kinetic behavior of two deposits including an elevated-pyritic (Cu/S=0.21) complex copper sulfide ore and a high-grade carbonaceous sedimentary apatite (P2O5>25%) ore were investigated.
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The extraction of copper achieved was over 85%. Copper dissolution in this system is affected by particle size, leaching time and oxygen pressure. This paper …
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The present ore sample were contained 0.55% Cu with 20.1% of nonsulphide copper in it and gangue material with higher contents of alumina about 19.07%. In this paper will be presented some results ...
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Porphyry-type ore deposits are major resources of copper and gold, precipitated from fluids expelled by crustal magma chambers. The metals are typically concentrated in confined ore shells within vertically extensive vein networks, formed through hydraulic fracturing of rock by ascending fluids. Num …
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material for pyritic smelting. Copper ores can be grouped commercially into smelting, concentrating, and leaching ores. All three kinds of ore often occur at the same mine, but the distinction holds good in a gen eral way. Smelting ores may be either pyritic, with an excess of iron, or siliceous, carrying
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The mining industry has faced significant challenges to maintaining copper production technically, economically, and environmentally viable. Some of the major limitations that must be overcome in the coming years are the copper ore grade decline due to its intense exploitation, the increasing requirements for environmental protection, and …
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Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on …
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Active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores. Misreported pyrite into copper concentrates decreased the grade and recovery of …
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Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on rougher stage of industrial copper flotation circuit. Samples were taken from different streams and the structure of ...
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Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on rougher stage of industrial copper flotation circuit. Samples were taken from different streams and the structure of ...
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In this regard, Agheli et al. (2018) investigated the effect of pyrite content of feed and configuration of locked particles on rougher flotation of copper in low and high pyritic ore types. They ...
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In this study, the amenability of a copper-rich gold ore (108 g/t Au, 1.60% Cu) to cyanide leaching was investigated. ... The extraction of gold/silver from a copper-bearing pyritic gold ...
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Copper flotation can be also more complicated if flotation feed comes from an elevated-pyritic copper ore. In this investigation, the effect of two different ore types (high pyritic and low pyritic feeds) was studied on rougher stage of industrial copper flotation circuit. Samples were taken from different streams and the structure of ...
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Pyritic minerals generally occur in nature together with other trace metals as impurities, that can be released during the ore oxidation. To investigate the role of such impurities, the …
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Depression of pyrite is very important in sulphide ore flotation. This paper investigates the role of non-toxic depressants on the flotation of pyrite. Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper
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These include Carlin-type deposits, iron oxide-copper-gold (IOCG) deposits, ... of δ 34 S values from wall rocks to the pre-ore and syn-ore sulfides can be explained by the interaction of potential ore fluid with the pyritic sedimentary host rocks (Yang et al., 2022).
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The ore deposits of the district are in pyritic quartz veins that are chiefly in the Boulder Creek Granite near the contact of the granite with a quartz monzonite stock. The chief metal produced is gold but in some veins copper also is of value. Few veins have been traced for more than 1,000 feet along the surface or to depths greater than 500 ...
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Electrode consumption was 4 kilograms per metric ton of material smelted. The Westly furnace, used 3-Phase, 50-cycle alternating current at 112 to 230 volts. The several sizes were of 200- to 900 kw. …
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Role of starch and metabisulphite on pure pyrite and pyritic copper ore flotation 41 Mineralogical study also showed that about 50% of ore is formed by pyrite, as a major mineral in the ore. Table 1. Chemical analyses of the samples Compound Pure Pyrite Sample % Pyritic Copper Ore Sample % Fe 42.43 27.65 S 49.40 27.22
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Heavily pyritic samples VI (#15 – 20) have low conductivity. By way of comparison, typical values (encountered by the writer) for massive graphite ... but by no means definitive, of very high copper grade chalcocite ore. Until further data becomes available it seems reasonable to regard chalcocite as a good conductor, probably with …
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Then pyritic copper ore was used to compare the results with pure pyrite sample. 2. Experimental 2.1. Material In this study pure a pyrite sample for fundamental studies and pyritic copper ore to prove fundamental studies in real situation were used.
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Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values. pH was 6.5 and 10 in pure pyrite study while it was 6.9 and 12 in ...
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In a laboratory where much work is done in a day, and the class of ore is uniform, what is called a "general smelting flux" may be made. This flux is adapted to ores that may be classified as average, but is so compounded as to allow the addition of extra litharge and reducing agent. ... Copper Matte.—1/10, A.T. Test, Lead 40 grams, Borax ...
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Copper–cobalt sulfide flotation concentrate received from Comika Mining Kamoya project in Congo contains around 24.2% copper, 7.1% cobalt, 22.9% sulfur, 13% iron, and a small amount of other metals.
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identify low-resistivity and chargeable sulfide masses, high-resistivity silicified-carbonitized zones, and pyritic alteration assemblages (Ward, 1966; Zonge and Hughes, 1991; Shalley and Harvey, 1992; Thomas and others, 1992). ... Zoning: In many deposits, ore grades from copper sulfide mineral-rich (chalcopyrite, enargite, bornite) within and
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