- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
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Arsenic-bearing minerals commonly occur within ore bodies that contain lead, nickel, gold and most notably copper. Due to similarities in the surface properties of base metal sulfide minerals and arsenic-bearing minerals, selective separations of arsenic from such ores by flotation remain challenging.
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The Northparkes orebody contains chalcopyrite-bornite with tennantite the main arsenic bearing mineral. Conventional flotation testwork had indicated concentrates containing up to 5000–7000 ppm arsenic, the target being 2000 ppm. Selective oxidation or the exploitation of pulp potential effects was deemed the most likely approach if a ...
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Hence, the tailings from CS flotation become one of the primary outlets for arsenic during copper smelting. Apparently, the redistribution behavior of copper minerals and arsenic minerals during CS flotation directly affects the utilization efficiency of copper and the environmental hazards of tailings.
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Arsenic minerals pose a problem for copper flotation concentrates since they are often associated with copper minerals, display similar flotation behaviour to copper minerals and therefore report to final copper flotation products. Despite extensive research, the rejection of arsenic minerals in copper flotation is still a challenge.
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copper minerals from other copper sulfides, owing to the strong Eh dependence of arsenic mineral flotation [9]. Later investigations of this phenomenon found that the separation mechanism involved the oxidation of minerals and collectors. Several studies have fo-cused on the selective oxidation of enargite and copper sulfide minerals [10–14].
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Mineral, metal values, and by-products can be recovered by flotation separation. The economic aspect of the recovery of useful valuable minerals (such as gold), contributing to recycling meanwhile with environmental technology and wastewater treatment, was enlightened, for instance, of gold from arsenic-rich auriferous pyrite …
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In this paper, S-7261A is used as arsenopyrite depressant to carry out copper-arsenic flotation separation tests in order to obtain copper concentrate with lower arsenic content, which provides reference for the flotation separation of arsenic-containing copper sulfide minerals.
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The poor liberation of copper-arsenic minerals and copper minerals makes selectivity difficult and fine grinding is conductive for the liberation and differential flotation. The FSF slag also contains a trace amount of iron arsenide, disseminating finely and existing in the form of micro-granular inclusions that occur in matte and arsenic ...
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Various studies have been carried out to investigate the potential for selective flotation of arsenic-bearing copper minerals using either chemical reagents that act as depressants, or use of oxidising and reducing agents to control electrochemical conditions of the flotation pulp, ...
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Due to similarities in the surface properties of base metal sulfide minerals and arsenic-bearing minerals, selective separations of arsenic from such ores by flotation remain challenging. Arsenic is also ubiquitous in the natural environment and extremely toxic to all forms of life.
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Arsenic is liberated and oxidized into arsenate compounds while the recombination of As-O and Cu-S happened in the process affecting the selectivity of copper and arsenic. Arsenic fixed in silicate minerals is discharged into tailing which suggested to induce and fix arsenic into silicate minerals can facilitate arsenic removal from …
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The selective depressive effect of calcium lignosulfonate provides a novel approach for improving the flotation separation of arsenic-bearing minerals from copper sulfide minerals. Arsenic contamination significantly affects the quality of copper concentrates, presenting challenges during smelting processes.
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Interestingly, flotation of mixed mineral of copper sulfide and arsenic-bearing copper minerals shows that enargite and tennantite exhibit a higher floatability compared to chalcopyrite and bornite after the oxidation treatment followed by the addition of potassium amyl xanthate (PAX).
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Arsenic removal is an important issue because arsenic contamination can cause considerable harm to ecosystems. In this study, modified polyacrylamide agents (BYYS) are introduced as environmentally friendly inhibitors for the selective separation of antimony–arsenic via low-alkalinity froth flotation.
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mineral together with arsenic minerals is very important for the flotation process. Because the movement of the arsenopyrite mineral, which has very high flotation properties, with the stibnite mineral, which has natural buoyancy, causes to the high As contents in the obtained antimony concentrates.
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