Therefore, this paper was focused on the effect of ammonium sulfide and sodium sulfide on the sulfidization of malachite, respectively; this was investigated using different devices such as the ...
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The effect of depressant 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) on the flotation separation of smithsonite from calcite was studied by micro-flotation and electro-kinetic tests. The micro-flotation results showed that good floatability of both smithsonite and calcite were achieved in the presence of sodium oleate. The …
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Sulfidization xanthate flotation remains the most promising method for the beneficiation of malachite. In this study, L-arginine (LA) was first used to modify the malachite surface and improve the ...
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A method of preparing a copper(II)-ammonia complex ion sulfidization activator, the method comprising: dropwise adding an ammonia solution into a copper salt solution to produce a mixture; and
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Sulfidization can greatly improve the flotation performance of lead oxide minerals. To provide deeper knowledge about this process, sulfidization of cerussite …
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Many factors influence the process of mineral sulfidization flotation, such as the amount of sulfidizing agent, pH, and temperature in the sulfidization process [11], [12], [13]. Research has shown that if insufficient Na 2 S is used in the flotation process, copper oxide will not be completely sulfidized and thus cannot be effectively enriched.
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Sulfidization flotation Activation flotation 1. Introduction The continuous development of the global economy has resulted in a high demand for copper production and high copper consumption [1], [2], and exploitation and effective use of copper oxide …
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Acid Sulfate Alteration on Mars Ming, D W and Morris,, The Mauna Kea sulfuric acid solutions are the result of interactions of SO, sulfidization vs .... Your Single HDPE Source Structures resistance, attack from hydrogen sulfide, sulfuric acid and other aggressive chemicals does not occur Tough, impact-resistant, FLOTATION AND DEFLECTION...
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Sulfidization followed by xanthate flotation is an effective technique to recover copper oxide minerals. However, the sulfidization mechanism of malachite has not been determined.
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The effect of water glass on the sulfidization flotation of malachite in the presence of calcite slimes was investigated in this study. The micro-flotation tests showed that the flotation response of malachite was inhibited significantly by calcite slimes when using sodium sulfide as sulfidizing reagent and SBX as collector.
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ferrous sulfate and sulfuric acid FeS2 + 3 ½ O2 + H2O Fe(II)SO4 + H2SO4 Oxidation of ferrous sulfate to ferric sulfate • Fe(II)SO4 + ½ H2SO4 + 1/4O2 ½ Fe(III)2(SO4)3 + ½ …
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Sulfidization followed by xanthate flotation is an extensively used method for recovering the lead oxide minerals.However, there is a debate about the sulfidization mechanism of cerussite. In this work, the sulfidization mechanism was investigated using optical microscopy (OM), scanning electron microscopy and energy dispersive …
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By the selective solvent action of sulfuric acid, the sulfidization product was extracted from the sulfidized malachite. The XRD results for the extracts indicated that the sulfidization product comprised djurleite (Cu 31 S 16 ) and anilite (Cu 7 S 4 ), which both were compounds of the chalcocite group (Cu 2−x S), suggesting transformation of ...
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sulfidization flotation versus sulfuric acid in russia. Jul 01 2020 · The extraction process of sulfidization product was as follows Firstly 5 g of sulfidized cerussite sample prepared ten times as described in Section 23 was mixed with 100 mL of aqueous solution containing acetic acid 120 gL sodium acetic 120 gL and ascorbic acid 40 gL until ...
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10. The sulfidization flotation method of claim 9, wherein a copper content in the copper oxide ore is 40-50%. 11. The sulfidization flotation method of claim 9, wherein the solvent is water; and a mass ratio of the copper oxide ore to water is 2:35. 12. The sulfidization flotation method of claim 9, wherein the slurry is adjusted to pH 6-8. 13.
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Abstract. Sulfidization followed by xanthate flotation is an extensively used method for recovering the lead oxide minerals. However, there is a debate about the …
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Compared with direct flotation, sulfidization flotation is the most economical and effective method to treat copper oxide minerals, because of its excellent selectivity …
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The best performance is achieved with reverse flotation, using Na-Oleate and a mixture of phosphoric and sulphuric acid (ratio of 4:1). Overall Cu-Co recoveries of 93.5% and 85.1% respectively ...
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The green and eco-friendly flotation process to enrich wolframite under lead-free pulp is an attractive issue, which is promising to be broken through an innovative oxidation flotation approach with H 2 O 2 and N-[(3-hydroxyamino)-propoxy]-N-hexyl dithiocarbamate (HAHD).The flotation results indicated that in comparison to the …
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The micro-flotation results showed that the finer the calcite particles size is, the lower the malachite recovery will be in the sulfidization flotation of malachite at around pH 9.5.
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Abstract. Although azurite is one of the most important copper oxide minerals, the recovery of this mineral via sulfidization-xanthate flotation is typically …
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Reagents in zinc recovery from Pb flotation tailings of RECOVERY OF COBALT AND NICKEL BY ATMOSPHERIC. Sulfidization flotation is the most commonly used method for the recovery of zinc oxidized or Usually sodium sulfide Sulfuric Acid 98 Merck pH adjuster Sodium Hydroxide 97 Merck pH adjuster XRD employing a Philips instrument model …
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From a hydrometallurgy point of view, the sulfuric acid leaching process can be used to treat the Zn -Pb carbonate ores for the separation of smithsonite and cerussite by converting smithsonite to ...
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A 10000m 3 /day acid mine drainage treatment system was built in 2013, and the sulfidization method was adopted. The process flow diagram is shown in Fig. 2 [ 30 ]. Test results of water quality are listed in Table 4. The average recovery rate of iron was 98.96%, and the average recovery rate of copper was 90.41%.
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In this study, the sulfidization-xanthate flotation method is applied for the beneficiation of lead oxide ore in Yunnan Province (China) with sodium hexametaphosphate and carboxymethyl cellulose as depressant. ... The pH of the resulting suspension was adjusted by adding 0.1 mol/L sulfuric acid and 0.1 mol/L sodium hydroxide solutions ...
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Response surface methodology is used to optimize the leaching process for refractory flotation copper tailings. The proportion of the refractory combination oxide copper (chrysocolla) is 64.84%. At present, few studies have examined the leaching of chrysocolla. In this study, we examine the effects of several variables, including the …
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Ammonium ions have positive effects on the sulfidization flotation of malachite; however, the underlying mechanisms remain poorly understood. In the present work, micro-flotation tests, field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray …
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Under the same flotation conditions, OCETC exhibited comparable flotation recovery for malachite compared to octyl hydroxamic acid (98.43%), but much better than that by benzoyl hydroxamic acid ...
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Under the condition of a leaching temperature of 50 °C, sulfuric acid concentration of 0.14 mol/L, average particle size of 60 μm, ... (using chelating reagents or a fatty acid as collector), sulfidization flotation (using xanthate as collector), and activation flotation (using chelating reagents, ammonium/amine salts, metal ions, and oxidant ...
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Among the sulfidization flotation methods, surface sulfidization is the most commonly used, economical, and mature process for the treatment of common copper oxide ore resources. ... Selective depression of copper-activated sphalerite by polyaspartic acid during chalcopyrite flotation [J] Transactions of Nonferrous Metals Society of China, 31 ...
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During the sulfidization–xanthate flotation of malachite in industrial production, Fe 3+ in the pulp may affect mineral enrichment. In this study, we examined the adsorption of Fe 3+ on the malachite surface and sulfidized surface to investigate the effect of Fe 3+ on malachite sulfidization, sulfidization products, and mineral floatability. The …
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From a hydrometallurgy point of view, the sulfuric acid leaching process can be used to treat the Zn -Pb carbonate ores for the separation of smithsonite and cerussite by converting smithsonite to ...
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Nicol et al. [14] used dilute sulfuric acid to leach chrysocolla, malachite, and tenorite, with malachite and tenorite showing the fastest and slowest leaching, respectively, under the same conditions. ... Cerussite, as an important metal mineral, is enriched mainly by sulfidization flotation. Ions in the pulp solution affect sulfidized ...
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Sulfidization flotation is performed by treating copper oxide minerals with a sulfurizing reagent, which is usually sodium sulfide, for pre-sulfidization. This generates …
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Through the selective solvent action of acetic acid, sulfidization product can be extracted from the sulfidized cerussite. • The sulfidization product of cerussite is …
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Flotation methods include direct flotation (using chelating reagents or a fatty acid as collector), sulfidization flotation (using xanthate as collector), and activation flotation (using chelating reagents, ammonium/amine salts, metal ions, and oxidant for activation). An effective way to realize efficient flotation of copper oxide minerals is ...
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