Fig. 4 : Pyrometallurgical extraction of copper from sulfide ores The ores containing chalcopyrite minerals are upgraded by flotation and then roasted under controlled conditions. During roasting, iron sulfide is partly converted into FeO for subsequent removal by slagging. 2CuFeS2 (s) + 0 2 (g) Cu 2S(s) + 2FeS(s) + SO2 (g) (1)

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Pyrometallurgy is a branch of extractive metallurgy.It consists of the thermal treatment of minerals and metallurgical ores and concentrates to bring about physical and chemical transformations in the materials to enable recovery of valuable metals. Pyrometallurgical treatment may produce products able to be sold such as pure metals, or intermediate compounds or alloys, suitable as feed for ...

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Pyrometallurgical Sulfide ores (0.5-2% Cu) I Comminution 1 II I FIotation I Concent rates (20-30% Cu) 1 6-1.-FIow Sheets for Copper Production Hydrometalluigical Oxide and sulfide ores (0.3-2.0% Cu) Leaching Pregnant Ieachate (20-50% Cu) Precipitation Solvent extract ion I Smelting I I Cement copper 1 (85-90% Cu) Matte (50-75% Cu) II I ...

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Pyrometallurgical extraction. The following is a process of copper extraction from chalcopyrite ore into pure metal. While oxide ores can be processed using pyrometallurgical techniques, hydrometallurgical methods are more cost effective. The copper ore is crushed and ground before it is concentrated to between 20 and 40% copper in a flotation ...

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About 80 % of primary copper production comes from low-grade or poor sulfide ores. After enrichment steps, the copper concentrates are usually treated by pyrometallurgical methods. Generally, copper extraction follows the sequence (see Figure below): 1. Beneficiation by froth flotation of ore to give copper concentrate

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The treatment of primary copper ores by the pyrometallurgical process is responsible for about 80% of the world's copper production (Schlesinger et al., 2011). However, this process has several restrictions to treat other copper sulfide ores with organic and inorganic materials, silica, arsenic, and polymetallic (zinc, lead, cobalt, and PGE ...

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First of all, let's be clear on the the formula for chalcopyrite. It is $ce{CuFeS2}$.The other copper-iron sulfide ore is bornite, $ce{Cu5FeS4}$.Now, let's talk about copper extraction.What is written in your question is not correct and I am quite sure that's not how copper is extracted.

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The contribution of the milling, smelting, and refining of sulfide ores to Hg emissions and to Hg byproduction is not adequately quantified in a global context. In this study, we estimate Hg emissions from the pyrometallurgical treatment of Cu, Pb, and Zn sulfide ores. We base our calculations on qu …

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For the pyrometallurgical method used for the extraction of copper from sulphide ore, which statements is//are correct ?

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Copper Mining and Extraction: Oxide Ores. Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11-14), but is introduced here because an important by-product of this process is used for the extraction of oxide or Pyroprocessing Sulfide Ores Provides Acid for Leaching. 24/7 Online] Copper Sulfide

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A basic principle of many processes for extracting copper and nickel from sulfide ores is to overlay the molten ore or matte with a lime–silica–iron oxide slag and blow with air or oxygen. Some of the iron present in the ore oxidizes and as a result, partitions to the slag phase, while some of the sulfur is carried off as sulfur dioxide.

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Beneficiation of sulfide copper ores typically includes flotation. However, this process doesn't remove arsenic if it is present in the ores. After the beneficiation, copper concentrates are either subjected to roasting or to direct pyrometallurgical extraction (smelting and converting), depending on the copper amount in the concentrate. These

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A Review on Novel Techniques for Chalcopyrite Ore Processing566 Кб. Pyro metallurgical extraction involves heating the mineral cake in a blast furnace; o xygen pressure and temperature are carefully controlled.Th is method is applied to sulfide flotation concentrates rather than ores and is economically feasible for copper rich feed for large scale operations.

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Pyrometallurgical extraction inv olves several processes such as: roasting, carbothermic reduction, reductio n of sulfide ores, and metallot hermic reduction. The

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The majority of copper extraction from Cu–Fe–S minerals is pyrometallurgical [13]. Figure 4.4.3 is a schematic presentation of the conventional pyrometallurgical process for extracting copper from Cu–Fe–S ores and the approaches for copper recovery from slag in industry [13, 15].

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