A hydrometallurgical process for the removal of arsenic and antimony from a so-called dirty copper concentrate 101 is described. The process comprises the following steps Step 1 repulping 100 the dirty copper concentrate with an alkaline lixiviant 102, 103, and subjecting the dirty copper concentrate to an alkaline leaching process the Leach in a Leach reactor ...
antimony-bearing copper concentrates, was conducted using an approach where one factor at a time was varied 6,19. The effect of each experimental factor was investigated by altering the level of one factor at a time while keeping the levels of the other factors constant. However, if the aim of conducting a
During smelting of copper concentrates, arsenic is easily removed into the offgas while antimony is not readily removed due to its lower partial pressure and high affinity for liquid copper. Therefore, removal of these impurities at an early stage of processing will be beneficial for the copper making process.
charge material of copper concentrate mixed with a siliceous flux often a low-grade copper ore is heated in air to about 650 C 1200 F, eliminating 20 to 50 percent of the sulfur as sulfur dioxide SO2. Portions of impurities such as antimony, arsenic, and lead are driven off, and some iron is
Solubilisation of Arsenic, Antimony and Copper from a Complex Chalcopyrite Concentrate by Acidithiobacillus ferrooxidans. Alejandro Lopez. Erasmo Orrantia. M Makita. Alejandro Lopez. Erasmo Orrantia. M Makita. Download PDF. Download Full PDF Package. This paper. A
A method of recovering copper from a copper sulfide concentrate comprising a copper arsenic sulfosalt or a copper antimony sulfosalt, using pyrite as a catalyst. The concentrate and pyrite are added to an acidic sulfate leach solution.
It is a patented alkaline leach process for the removal of arsenic, antimony and other penalty elements from copper, lead and nickel sulphide concentrates, and antimony from gold concentrates. The flowsheet consists of an atmospheric tank caustic leach followed by filtration and washing of the cleaned concentrate.
The produced copper concentrates are then transported to Inebolu and Hopa Ports for shipment. Our copper concentrate production volume is 170.000 mt per year in our Kure plant and 130.000 mt per year in our Murgul plant. ET BAKIR CO. K RE CONCENTRATOR PLANT COPPER CONCENTRATE DIMENSIONS. Bulk Density . 2,2 grcm3.
lead oxide, along with copper, antimony, and other elements, floats to the top and solidifies above the molten lead. The dross is removed and is fed into a dross furnace for recovery of the nonlead mineral values. The lead bullion is refined using pyrometal-lurgical methods to remove any remaining nonlead materials e.g., gold, silver, bismuth,
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that the copper content in the matte is decreasing as the concentrate consumption rises above 20. It is determined an equilibrium composition of the obtained products. Listed are the results of copper, lead, zinc, arsenic and antimony distribution among the melting products.
The chemistry of the leach leaves the copper, lead or nickel in solid form in the concentrate, eliminating the need for downstream recovery of these metals. For antimony applications, the final product stream is the AL leach liquor, which can be passed to conventional downstream metal recovery.
Method for removing essentially all of the chemically bonded arsenic and antimony from copper sulfide ores. The arsenic and antimony are selectively leached out using Na2S in a basic solution. The resulting Na3AsS4 and Na3SbS4 are converted to the sulfides or to ferric arsenate and ferric antimonate for safe disposal. Sodium and sulfur values are recovered for recycling in the process.
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Methods for determining trace and moderate amounts of antimony in copper, nickel, molybdenum, lead and zinc concentrates and in ores are described. Following sample decomposition, antimony is oxidized to antimonyV with aqua regia, then reduced to antimonyIII with sodium metabisulphite in 6M hydr
During smelting of copper concentrates, arsenic is easily removed into the offgas while antimony is not readily removed due to its lower partial pressure and high affinity for liquid copper.
When an appreciable amount of antimony is present in the copper ore concentrate e.g., more than about 1 by weight then it may be preferable to increase the concentration of the NaOH in the Na 2 S leach liquid up to as much as 3 molar.
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Feb 23, 2016 David Duckworth of consulting company Saint Barbara notes that the issue of high-arsenic high-As copper concentrates has been highlighted recently with the start-up of a number of new projects producing this material. Copper concentrates can be divided into clean or complex types, he writes in the companys latest newsletter.
recovery of arsenic, antimony, gold and silver, leaving a clean high-grade copper concentrate. The fundamentals behind the technology are described, along with those of hydrometallurgical arsenic fixation and stabilization. Flowsheets and unit operations are elucidated, along with
Copper concentrates are produced by the beneficiation, or upgrading, of copper ore. A typical copper ore would be 0.7 to 2 copper, a typical copper concentrate would grade around 25 to 35 copper. Copper concentrates are either smelted and refined in-house, or sold to custom smelters.
In experiments using a chalcopyritic copper concentrate containing 2.2 arsenic as enargite. 94 of the arsenic was removed when the concentrate was baked at 85 C for 10 min by using 2.5 times ...
Separation of antimony from a complex copper concentrate Process optimization by response surface methodology Samuel A. Awe, Mohammad Khoshkhoo, Paul Kruger and ke Sandstr m Manuscript under review in Separation and Purification Technology Journal Other contribution not included Leaching mechanism of tetrahedrite in alkaline sulfide solution
Antimony tends to concentrate in sulfide ores along with copper, lead and silver. It occurs sparingly as a free element, but when it does it is usually in association with arsenic, bismuth or silver. The principal ore minerals of antimony are stibnite and jamesonite, but it
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Other less common metals sold as concentrates include antimony, arsenic, bismuth, cadmium, cerium, cobalt, gallium, indium, mercury, platinum, tellurium, tantalum, titanium and vanadium. By way of example, a copper concentrate could include chalcopyrite CuFeS2, containing 34.6 copper, possibly another sulphide such as pyrite FeS2 and other ...
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According to its latest annual report, published in November 2008, All gold and antimony concentrates produced were sold under contract to the Hunan Zhongnan Tungsten and Trading Company, an ...
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The average grade of copper ores in the 21st century is below 0.6 copper, with a proportion of economic ore minerals including copper being less than 2 of the total volume of the ore rock. A key objective in the metallurgical treatment of any ore is the separation of