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NaSH is used to depress copper sulphide (calcosine o calcocite, Cu 2 S), but due to the presence of oxygen (O 2) in water and air it is hydrolyzed and HS-ions are formed, causing greater use of NaSH. The replacement by nitrogen gas prevents the reaction with oxygen.
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Dec 13, 2010 A good correlation between pulp potential and recovery of chalcopyrite and pyrite was found when the potential was varied by addition of H 2 O 2 and NaSH as oxidizing and reducing agents, respectively. In general, flotation is possible in the mildly to moderately oxidizing region and in slight or absent in reducing solutions for sulfide minerals.
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Mar 08, 2018 Therefore, flotation process is the main beneficiation method for copper sulfide ore. The common collecting agent used for copper sulfide ore flotation process is xanthate collectors, followed by aerofloat and its esters. Actually, The collecting effect is …
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the flotation improved recovery of fine copper particles (−10 μm) [6]. Houot and Duhamet (1992) reported that sodium sulphide depressed galena and increases selectivity of copper sulphide from other sulphides [7]. Sodium sulphite was used to improve the separation of copper-activated sphalerite from pyrite in mildly alkaline pH conditions [8 ...
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the flotation recovery of Ni, Cu and Co from a nickel-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at different levels was investigated. Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals ...
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Abstract. Problems arising during flotation of complex Cu-Pb-Zn sulphide ores are in general of geological origin. The features of these ores are reviewed, stressing that mineralogical studies extending to process mineralogy are prerequisite for a consistent flotation process. Some examples affecting flotation are given.
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Copper Sulfide Flotation Mineral Processing amp; Metallurgy. Copper Sulfide Flotation Circuit. The pulp from the Conditioner is treated in a 10 cell Sub A Flotation Machine and a 4 cell Sub A Flotation machine. Sometimes conditioners are not provided; however, their use insures that reagents are thoroughly mixed into the pulp ahead of flotation ...
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Sodium hydrosulphide (NaSH) (or sodium sulphide) is one of the traditional depressing reagents. At the Wunugetu mine in China’s Inner Mongolia region, Cu and Mo grades are low and the proportion of secondary copper minerals is high.
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Effects of pH and pulp potential on selective separation selective molybdenite flotation by Na 2 S/NaSH addition, because Na 2 S/NaSH acts as a depressant for copper sulfide in the appropriate pulp potential [7] It was found that changes in pulp potential as an effective factor resulted in dual effects of Na 2 S and NaSH on flotation and depression behavior of sulphide minerals
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selective molybdenite flotation by Na 2 S/NaSH addition, because Na 2 S/NaSH acts as a depressant for copper sulfide in the appropriate pulp potential [7]. It was found that changes in pulp potential as an effective factor resulted in dual effects of Na 2 S and NaSH on flotation and depression behavior of sulphide minerals.
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Mar 11, 2018 The treatment of smelting slag has attracted much attention nowadays. This study investigates the influence of Na 2 S, CuSO 4 , and FeCl 3 on sulphidizing flotation of copper oxide. The results show that a proper Cu 2+ concentration can increase the sulphidizing effect of copper oxide, while Fe 3+ /sup inhibits the sulphidizing effect.
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A method of depressing copper sulfides and iron sulfides in a molybdenite floatation recovery process uses alkaline or alkaline earth potysulftdes at high concentrate pH. The method of enriching molybdenite content from a slurry having molybdenite and at least one of iron sulfides and copper sulfides can include the steps of adding an effective amount of a depressing reagent selected from one ...
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The sulfide ore is treated through a flotation circuit to produce pyrite and copper concentrates. The pyrite concentrate is treated in the ... 1500 and 2000 ppm copper. The effects of pH and NaSH addition on cyanide and copper recovery were also examined. A summary of the findings of this
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Control of pH is one of the most widely applied methods for the modulation of mineral flotation. In this study the effect of pH on potential in solution and sulphur minerals flotation is discussed with various electrodes. The electrodes were platinum, gold, chalcopyrite, pyrite and galena. In solution, potentials were linearly dependent on pH with a different slope for each electrode.
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Copper grade–recovery relationship from the rougher scavenger flotation Fig. 2. Flotation response for copper sulphide composite using PAX as the copper test for the copper oxide composite. Total AM28 and MIBC doses for both Tests A collector. Total PAX and …
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May 10, 2018 The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper sulfide minerals. The minerals' composition and association, grain distribution, and liberation within the ore samples were analyzed in the feed, concentrate, and the tailings of the flotation processes with two pulp densities of 25wt% and …
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Jul 12, 2021 The flotation effect of refractory copper-sulfur ore containing secondary copper minerals is better than that with butyl xanthate, but its selectivity is worse. Aerofloat Aerofloat has a weak collection capacity and slow flotation speed for sulphide minerals, …
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The effect of copper sulphate addition on the recovery of chromite in the flotation . The effect of copper sulphate addition on the recovery of chromite generally neutral in charge. As a result of this charged nature, CMC adsorption can induce particle dispersion in addition to having a depressant effect which can influence flotation ...
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Flotation Behavior of Iranian Oxidized Zinc Ore Using Different . Apr 1, 2015 In this study, the flotation of oxidized zinc ore from Angooran ore in the the effect of using some collectors (sodium sulphide and copper sulphate at and . Get Price
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