copper arsenic flotation selectivity

Flotation separation of copper sulphides from arsenic Copper/arsenic selectivity, determined as a ratio of copper recovery to arsenic recovery is shown in Fig copper arsenic flotation selectivity

copper arsenic flotation selectivity

  • Flotation separation of copper sulphides from arsenic

    Copper/arsenic selectivity, determined as a ratio of copper recovery to arsenic recovery is shown in Fig 10 There was very little change in copper/arsenic selectivity with a size reduction from 30 to 20 μm, but further regrinding to 10 μm has provided a significant improvement Download : Download fullsize image; Fig 10Copper Arsenic Flotation Selectivity Remediation of metalcontaminated urban soil using flotation NCBI Dec 2, 2009 was evaluated for the removal of arsenic FreeChat copper arsenic flotation selectivity Mining 23/02/2013 MEI Blog: Challenges in copper flotation Sep 20, 2011 There are a number of papers on copper flotationcopper arsenic flotation selectivity monterantenplIn conventional flotation flowsheets for treating copper sulphide ores containing small but significant amounts of arsenic, the arsenic is generally concentrated with the copper in final concentrate(PDF) Selective flotation of enargite from copper

  • Arsenicrejection flotation circuit design and selection

    1 Introduction CSIRO Process Science and Engineering (Australia) has been developing new flotation flowsheets, based on pulp potential control, aimed at separating copperbearing minerals and arsenicbearing minerals in base metal circuits (Bruckard and Davey, 2007, Senior et al, 2006, Smith and Bruckard, 2007)Although the results to date have been promising, the flowsheets have beenThe arsenic content of Rosebery copper flotation feed is mainly present as arsenopyrite (FeAsS), containing approximately 460% arsenic with the remainder of the arsenic in copper sulphosalts (tennantite (Cu 12 As 4 S 13)), in a solid solution series with tetrahedrite (Cu 12 Sb 4 S 13) Tennantite contains approximately 203% arsenicFlotation separation of copper sulphides from arsenicFlotation tests were conducted to compare the arsenopyrite depressing effect of MAA with pH control, potassium permanganate and preaeration The recovery and selectivity were optimised by varying the collector and depressant concentration, pH and the effect of copper sulphate additionThe selective flotation of arsenopyrite from pyrite

  • A critical review of surface properties and selective

    Highlights Arsenic is a significant penalty element in base metals production due to its high toxicity No commercial method of floating enargite from copper sulphides has been developed Surface properties, and singlemineral and selective flotation of enargite are reviewed Industrial applications require understanding mechanisms of enargite selective flotation Selective collectors forcopper and arsenic minerals floated very strongly and there was no selectivity between copper and arsenic Arsenic separation using pulp potential control If the flotation behavior of tennantite were similar to that of enargite, the most likely pulp potential region forTHE USE OF PULP POTENTIAL CONTROL TO SEPARATESelectivity and power of frothers in copper ore flotation 517 The ore was crushed in a jaw crusher to obtain particles smaller than 1 mm in size Prior to each flotation experiment, the crushed material was wet ground in a steel ball mill The size distribution of the ore, used as the flotation feed, is presented in Table 1 Table 1Selectivity and power of frothers in copper ore flotation

  • Separation of enargite and tennantite from nonarsenic

    At pH 50, N 2 conditioning resulted in high flotation recoveries of all the minerals without selectivity for all the pairs of minerals (Fig 1 without H 2 O 2)Under these nonoxidising conditions, only a small amount of oxidation products was found on the surface of all the copper minerals investigated As an example, the As(3d) and Cu(2p) XPS spectra of tennantite are shown in Fig 2, FigCopper Arsenic Flotation Selectivity Remediation of metalcontaminated urban soil using flotation NCBI Dec 2, 2009 was evaluated for the removal of arsenic FreeChat copper arsenic flotation selectivity Mining 23/02/2013 MEI Blog: Challenges in copper flotation Sep 20, 2011 There are a number of papers on copper flotationcopper arsenic flotation selectivity monterantenplcopper and arsenic minerals floated very strongly and there was no selectivity between copper and arsenic Arsenic separation using pulp potential control If the flotation behavior of tennantite were similar to that of enargite, the most likely pulp potential region forTHE USE OF PULP POTENTIAL CONTROL TO SEPARATE

  • The selective flotation of arsenopyrite from pyrite

    The arsenic content in copper concentrates significantly decreased from 63% to 11% in the absence of a depressant and in the presence of Ca(ClO)2 and SH, as proven by the mixedmineral flotationStudy of Flotation Parameters for Copper Recovery from Tennantite Ore Peter Solozhenkin1, Olga Ibragimova2, Keywords: Refractory Copperpyrite Ores, Flotation, Tennantite, Arsenic, Recovery 1Introduction The treatment processes for the beneficiation of copper been expected to improve selectivity for tennantite It hasStudy of Flotation Parameters for Copper Recovery fromResearch on separation of arsenicbearing copper sulphides from other copper sulphides, by flotation, indicates that Eh control shows promising results for separating arsenic copper sulphide from(PDF) Arsenic pathways in copper mining, sustainability

  • COPPER MINERALS FLOTATION IN FLOTATION PLANT

    Researches were focused on the flotation selectivity increase during copper concentrate cleaning stage in flotation plant of the "Rudnik" mine Microscopic analysis of harmful elements appearance in copper concentrate was the basis for further researches Procedures and research results of content and distribution of lead, copper and zinc byThe influence of amount of flotation reagents on the efficiency of copper ore flotation in standard laboratory experiments was investigated The aim of the study was to evaluate the effect of collector and frother amount on the selectivity of copper upgrading during flotation process of dolomiteshale ore from ForeSudetic Monocline area (LegnicaGlogow Copper Basin)Influence of reagent dose on the flotation selectivity ofG Lui, Zhong, and T Dai, “Investigation of the selectivity of ethoxycarbonyl thionocarbamates during the flotation of copper sulfides,” Mineral and Metallurgical Procc, 25, No 1 (2008) 7 A A Abramov, “Role of the collecting agent sorption forms in the elementary act of flotation,” Journal of Mining Science, No 1 (2005) 8Analysis of selectivity of thionocarbamate combinations

  • FAQS | Solvay

    2 天前Improved copper and gold selectivity in flash flotation circuits; High selectivity against iron sulfides (eg, pyrite), unactivated zinc sulfides (eg sphalerite) and arsenic minerals (eg, arsenopyrite) Its unique selectivity may facilitate elimination of the use of sodium cyanide at some operations; Low dosage required; Improved flotationIn this study, the flotation performances of ethoxycarbonyl thionocarbamate (ECTC), dialkyl thionocarbamate (DATC) and xanthate copper sulfide collectors are compared by the structurereactivity relationship using generalized perturbation theory and density functional calculation at the B3PW91/631G(D) level The electrondonating power of xanthates is strong and, therefore, xanthates canInvestigation of the selectivity of ethoxylcarbonylGreat progress has also been made in the separation process of copper and arsenic in China For example, in the weak acid medium of pH = 570, the sulfite lime method is used to suppress arsenopyrite and pyrite, and the selective methyl thiamine and ethyl xanthate are used to flotation copper mineralsSeparation practice of copper arsenic sulfide ore

  • Arsenic in Complex Orebodies | Ausenco

    · A bulk copperarsenic flotation stage at air set potential to produce a high arsenichigh copper concentrate · Arsenic flotation at −200 mV SHE, under nitrogen gas, to selectively depress the NECu and float the enargite to produce a high arseniclow copper concentrate that would be further treated using other techniques like hydrometallurgyThe removal of arsenic bearing minerals from concentrates is becoming more important as environmental laws become ever stricter with regard to smelter emissions The onus is shifting to concentrate producers to remove these minerals from their product, with penalties applying to materials containing greater than background amounts The arsenic content of Rosebery copper flotation feed isFlotation separation of copper sulphides from arsenicThe arsenic content of Rosebery copper flotation feed is mainly present as arsenopyrite (FeAsS), containing approximately 460% arsenic with the remainder of the arsenic in copper sulphosalts (tennantite (CuAsS)), in a solid solution series with tetrahedrite (CuSbS) Tennantite contains approximately 203% arsenicFlotation separation of copper sulphides from arsenic

  • Flotation of the Major Copper Sulphide Minerals – An

    The arsenicsignature copper minerals are added to the study, since many copper operations encounter arsenic as a penalty element in the saleable concentrate It is shown that the addition of arsenic to the copper and iron sulphides alters the semiconductor and electrochemistry properties, and in turn, its flotation characteristicsOn a Russian CuPbZn ore good selectivity against galena and sphalerite was obtained in the flotation of bornite and chalcopyrite as a high grade copper concentrate Stagewise grindingflotation with three grinding steps were used to obtain reasonable liberation of copper minerals and to maintain the optimum selectivityDevelopments in Selective Flotation of Complex Copper2 天前Improved copper and gold selectivity in flash flotation circuits; High selectivity against iron sulfides (eg, pyrite), unactivated zinc sulfides (eg sphalerite) and arsenic minerals (eg, arsenopyrite) Its unique selectivity may facilitate elimination of the use of sodium cyanide at some operations; Low dosage required; Improved flotationFAQS | Solvay

  • Recovery of Copper from Ammoniacal Leachates by Ion

    Furthermore, it was shown that chelating systems in ion flotation can recover the targeted metal ions with better selectivity [48,49,50,51] On the other side of the spectrum, there are very few studies in which the ion flotation of copper was tested inSulfide copperzinc ore flotation selectivity criterion was proposed taking into consideration copper and zinc processing recovery into copperzinc concentrate and flotation recovery kinetics It was revealed that differences between processing and kinetic flotation beneficiation results were observed with different compositions of collectorsCriterion of collector’s selectivity in sulfide ores bulkElectrocatalytic synthesis of multicarbon (C2+) products from CO2 reduction suffers from poor selectivity and low energy efficiency Herein, a facile oxidation–reduction cycling method is adopted to reconstruct the Cu electrode surface with the help of halide anions The surface composed of entangled Cu nano Celebrating 10 years of Chemical ScienceA reconstructed porous copper surface promotes