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Introduction. Galena and sphalerite usually coexist closely in polymetallic sulphide ores. The flotation separation of Pb-Zn sulfides has been largely achieved by depressing sphalerite using inorganic depressants, such as ZnSO 4, Na 2 SO 3 and cyanides (Bulatovic and Wyslouzil, 1995). However, these reagents always suffer from a …
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and galena, the separation of bulk copper/lead concentrate is com-mon used in commercial process and forms the backbone of this investigation. Inorganic depressants, duo to their irreplaceable ...
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The flotation separation of copper-lead sulfide minerals is a hot and difficult point in the field of mineral processing engineering. ... QIN WQ, JIAO F, et al. Flotation separation of chalcopyrite from galena by sodium humate and ammonium persulfate[J]. Transactions of Nonferrous Metals Society of China, 2016, 26(1): 265-271. doi: 10.1016 ...
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A novel approach has been outlined in this study, providing potential applications in the efficient separation of refractory copper–lead sulfide ore. Galena …
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As an important source of zinc, sphalerite is commonly associated with galena and other valuable minerals. The principle of zinc inhibition and lead flotation is often used in the separation of Pb-Zn sulfide ores because the natural floatability of sphalerite is much smaller than that of galena. 1,2 However, because sphalerite still has …
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@article{Xie2021SelectivePB, title={Selective passivation behavior of galena surface by sulfuric acid and a novel flotation separation method for copper-lead sulfide ore without collector and inhibitor}, author={Haiyun Xie and Yanhao Liu and Rao Bing and Jizong Wu and Likun Gao and Luzheng Chen and Xiaosong Tian}, journal={Separation …
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The Pb content in the copper concentrate was as low as 12.21%, which was quite similar with that using K 2 Cr 2 O 4 as depressant. Through the comparison of two groups of test results, it demonstrated that the combined depressants H 2 O 2-NaHA could be a potential substitute of dichromate in copper-lead flotation separation.
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@article{Cai2022EffectOP, title={Effect of pre-oxidation on copper-lead bulk concentrate flotation separation with sodium polyacrylate as galena depressant}, author={Jinpeng Cai and Xiao Dong Jia and Yian Ma and Ayman Maher Ibrahim and Chao Su and Xingcai Yu and Peilun Shen and Dian-wen Liu}, journal={Separation and …
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The influence of oxidizer hydrogen peroxide (H 2 O 2) on the chalcopyrite and galena flotation separation using sodium lignosulfonate as the depressant was studied and the mechanism of H 2 O 2 enhance depression action of sodium lignosulfonate was discussed in this study. The results show that both chalcopyrite and galena have good …
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The copper-lead mixed concentrates has the same surface properties after adsorption of the collector. • H 2 O 2 enhances the hydrophilicity of the surface of galena and has little effect on chalcopyrite.. After oxidation, galena forms a lot of metal oxides on the surface.. Metal oxides have hydrophilic properties, which inhibit the flotation of galena.
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Without HA, the recovery of galena and sphalerite was 97.00% and 39.03% at SIBX dosage of 20 mg/L, which meant sphalerite could not be separated from galena without depressant. In the case where HA was introduced, the recovery of sphalerite reduced from 39.03% to 11.41% at HA dosage of 50 mg/L. As for galena, the recovery …
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Depression of galena remains a challenge in the flotation separation of the copper/lead sulfide ores. Current technologies still suffer from considerable drawbacks, primarily due to the utilization of numerous hazardous, expensive, and poorly selective …
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The flotation separation of galena (PbS) and chalcopyrite (CuFeS 2) with sulfuric acid (H 2 SO 4) requires high temperatures (60–80 °C) and long treatment times (greater than25 min). ... In the process of flotation separation of copper-lead sulfide ores, the adsorption of copper ions on the galena surface often occurs, which poses a ...
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Copper and lead elements are usually sulfur-philic in nature and exist in the form of sulfide ores, such as chalcopyrite and galena [4]. Nevertheless, copper-lead minerals have a symbiotic relationship and similar surface properties [5, 6]. Subsequently, exploring an effective separation and recovery route of copper and lead metals is a ...
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With respect to the flotation of copper–lead–zinc sulfide ores, copper–lead mixed flotation is the most common method used to obtain a copper–lead concentrate [5]. Therefore, the separation of chalcopyrite and galena from a mixed concentrate is necessary. Depressants are a good choice to prevent galena from floating [6].
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Flotation tests on an industrial copper–lead bulk concentrate showed that using this depressant mixture can achieve highly efficient separation of chalcopyrite …
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Therefore, in all the experiments of copper-lead separation flotation and gold-lead separation flotation, the separation efficiency of the intermediate size fractions is the highest. A lower SE value of gold-lead for the coarse size fraction may be due to insufficient liberation of gold from galena or other gangue minerals.
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The flotation separation of galena (PbS) and chalcopyrite (CuFeS 2) with sulfuric acid (H 2 SO 4) requires high temperatures (60–80 °C) and long treatment times (greater than25 min).In this paper, ultrasonication was applied to enhance PbS depression with H 2 SO 4.Flotation and contact angle results revealed that PbS rather than CuFeS …
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1. Introduction. Galena (PbS) and sphalerite (ZnS) are the main sources of lead and zinc and usually associated in sulfide deposits. Because of the similar surface properties of these two minerals, their flotation separation is a persistent topic of interest in mineral processing [1].Xanthate is the most commonly used collector for sulfide mineral …
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Collector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type parameters on the galena and ...
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Introduction. Chalcopyrite (CuFeS 2) and galena (PbS) are critical raw materials for the production of copper and lead.Chalcopyrite and galena are often associated with each other in polymetallic sulfide deposits, and the beneficiation and separation of these minerals remain a challenge in industrial practice (Bulatovic et al., …
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Therefore, the separation of chalcopyrite and galena from a mixed concentrate is necessary. Depressants are a good choice to prevent galena from …
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Since lead hydroxide and copper hydroxide appear in different pH ranges, selection of proper pH values, in line with these findings, was shown to lead to the separation of the chalcopyrite/galena ...
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In this work, to achieve efficient separation of chalcopyrite from galena in Cu–Pb sulfide minerals, pre-oxidation by sodium persulfate (Na2S2O8) was used to magnify the differences in the ...
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The influence of oxidizer hydrogen peroxide (H 2 O 2) on the chalcopyrite and galena flotation separation using sodium lignosulfonate as the depressant was studied and the mechanism of H 2 O 2 enhance depression action of sodium lignosulfonate was discussed in this study. The results show that both chalcopyrite and galena have good …
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In the flotation separation of complex polymetallic sulfide ore, the separation of copper sulfide and lead sulfide has always been a challenge due to the complex dissemination relationship and the similar floatability. Therefore, the application of highly selective inhibitors solves a key factor in separation. In this paper, the common …
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1. Introduction. As strategically valuable metals, copper and lead play a vital role in the construction of the national economy (Pan et al., 2020).Respectively, galena (PbS) and chalcopyrite (CuFeS 2) are the main raw materials for extracting metallic lead and copper, and these two minerals are often present in deposits as polymetallic sulfide …
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Copper and lead concentrates were produced at grades of 21.88% (Cu) and 75.53% (Pb), with recoveries of 89.07% (Cu) and 98.26% (Pb). This showed a sim-ilar performance of DFinal with dichromate ...
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Flotation tests on an industrial copper–lead bulk concentrate showed that using this depressant mixture can achieve highly efficient separation of chalcopyrite from galena at the natural pH of the pulp. Copper and lead concentrates were produced at grades of 21.88% (Cu) and 75.53% (Pb), with recoveries of 89.07% (Cu) and 98.26% (Pb).
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To address the issue of mediocre separation efficiency of depressants in the copper-lead separation process, this article synthesized a macromolecular organic depressant, polymaleic anhydride-ethylenediaminetetraacetic acid (PMA–EDTC), using a polycarboxylic macromolecule as the backbone and also introducing –N–(C=S)–S– as …
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and galena, the separation of bulk copper/lead concentrate is com-mon used in commercial process and forms the backbone of this. investigation. Inorganic depressants, duo to their irreplaceable ...
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1. Introduction. Lead and zinc are crucial metals for modern society [1].Galena and sphalerite, as the main raw resources for extracting lead and zinc, commonly are associated in mineral deposits with each other [[2], [3], [4], [5]].To enrich galena and sphalerite from their ores, froth flotation is the primary technique [[6], [7], …
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The closed-circuit flotation test of copper/lead bulk concentrate shows that the grade and recovery of Cu reach 30.47% and 89.16% respectively and those of Pb reach 2.06% and1.58% respectively in copper concentrate, and the grade and recovery of Pb reach 50.34% and 98.42% and those of Cu reach 1.45% and 10.84% respectively in lead …
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The main copper mineral chalcopyrite is usually associated with galena. It is difficult to separate chalcopyrite and galena efficiently due to their extremely similar …
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Flotation tests on an industrial copper–lead bulk concentrate showed that using this depressant mixture can achieve highly efficient separation of chalcopyrite from ga-lena …
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Flotation tests on an industrial copper–lead bulk concentrate showed that using this depressant mixture can achieve highly efficient separation of chalcopyrite from galena …
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