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The activator, collector, and frother are copper sulphate, butyl xanthate, 2# oil, respectively. Several regulators were investigated including sodium hexametaphosphate, modified starch, and sodium silicate. Flotation Desulfurization Tests. The flotation desulfurization tests were carried out in a single flotation cell of 1.5 L.
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Section snippets Materials. Reagent grade anhydrous sodium sulfate (Na 2 SO 4) was employed to prepare feed solutions with 1800 mg·L − 1 of SO 4 2 −mercial PAC (QGS Química do Brasil Ltd., Sapucaia do Sul/RS, Brazil) with an Al 2 O 3 content of 18.2% (mass fraction) and a density of 1.31 g·cm − 3 was used as the aluminum source …
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Flotation, as one of the greatest technologies in the 21st century, enables humans to utilize the mineral resources on a large scale. The key to a successful flotation separation is the surfactants with unique selectivity towards different minerals. A …
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During flotation the alkalinity was maintained as nearly as possible at 0.02 lb. lime-oxide per ton of water. After flotation, half the circuit-water was wasted, the remaining half being supplemented by fresh water, at the head of the mill; lime sulphate thus being prevented from accumulating in the solution.
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Mineral supercell was established after geometry optimization of mineral face with bottom atoms being fixed with using ... In sodium oleate flotation system, pH had no effects on flotation recovery of quartz. ... Molecular simulation study of the effect of various additives on salbutamol sulfate crystal habit. Mol. Pharm., 8 (2011), pp. 1910-1918.
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Fluorite and scheelite, which are strategic calcium-bearing minerals, have similar active sites (Ca2+); as a result, the efficient separation of the two minerals is still one of the world's most difficult problems in the field of flotation. In this work, N-decanoylsarcosine sodium (SDAA), a non-toxic and low-cost amino acid surfactant, was …
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Rainwater collected in the Toluca region of Mexico with a pH of 6.25 was treated with an electrochemical process, and the efficiency of two supporting electrolytes were compared, one food grade (sea salt) and the other reagent grade (sodium sulfate). In the first stage, rainwater was characterized to detect the COD content, turbidity, metals …
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In this study, the effect of sodium dodecyl sulfonate (SDS) on the stability of dodecylamine (DDA) and on its adsorption configuration at the gas-liquid interface was investigated. ... These findings can greatly help in solving the strong stability problem in DDA flotation and provide a method for reducing stability. ...
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Sulfate roasting, including roasting with ammonium sulphate [33], sodium bisulfate [34], sulfuric acid [35], and other sulphates, has been claimed to selectively extract lithium from lithium-ion batteries. ... Conditions optimization of sodium sulfite roasting ... Selective Flotation Separation Mechanism of Lfps and Graphite Electrode Materials ...
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The overview of the flotation techniques and design parameters. ... The optimization of different hydrodynamic characteristics is also discussed, and some strategies are suggested for improving the working principle of flotation devices. ... (CMC) and sodium dodecyl sulfate and nitrogen were used as a gas phase. They observed …
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First, we show that McMaster flotation methods are appropriate to detect and thus quantify large protozoan cysts. Second, zinc sulphate McMaster flotation allows the retrieval of a higher number of parasite taxa compared to the other 3 methods. This method further shows the highest probability to detect each of the studied parasite taxa.
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Flotation Tests. The slag was crushed in a jaw crusher and ground in a ball mill and then sieved. N-ethyl-O-isopropyl thiocarbamate (Z-200), ethyl xanthate, butyl xanthate, isopentyl xanthate and butylamine dithiophosphate were used as collectors; terpineol oil as frother; sulphuric acid, lime, sodium hydroxide and sodium carbonate as …
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Emirhan Kiraz. The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in ...
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Sodium isopropyl xanthate (Na-iPrX), as the most effective salt in a real ore flotation process, was also produced at an industrial level and introduced as a collector for copper ores.
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The results demonstrated that the combination collector (sodium oleate: sodium dodecyl sulfate = 3:1) exhibited a better flotation performance and the maximum recovery increased to 83.18% at pH = 5 compared with single sodium oleate/sodium …
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Sodium hydrogen sulfide (NaHS) is commonly used as a copper depressant in the selective flotation of copper and molybdenum ores. However, the process is facing health and safety issues because NaHS readily yields toxic hydrogen sulfide gas (H2S) under acidic conditions. In this study, Na2SO3 was proposed as an alternative copper …
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Sodium cyanide. Sodium cyanide is mainly used to depress sphalerite in the first or lead-flotation stage in separating lead from zinc minerals. Its action on pyrite is nearly as strong as on sphalerite, but it does not affect galena unless a large excess is added or the contact time is too long. The effect of sodium cyanide is often intensified ...
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In the optimization process of flotation conditions in 600 g/t sodium carbonate and 300 g/t xanthate, the closed-circuit tests show that the qualified concentrate with a grade of 36.13% and a recovery of 98.07% …
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Experimental Study on the Collecting Agent for Spent Potlining Flotation Index Optimization ... for 5 min to form the kerosene emulsion. Sodium Alcohol Ether Sulphate (AES) and Tween 80 were applied as emulsifier and separately dubbed E1 and E2, while emulsified kerosene using E1 and E2 as emulsifier were dubbed EK1 and EK2, …
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Copper Sulphate Sulphur dioxide. Zinc Sulphate Nokes reagent, Arsenic Nokes. Sodium and Zinc Cyanide Starch, Guar gum, modified guars. ... As regards other reagents used in sulphide flotation, depressants like sodium cyanide, ZnSO4, sodium meta bi-sulphite are common. Effectiveness of depressant also depends on concentration and
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Finally, the sulfur in the sodium aluminate solution is removed by causticization or discarded in the form of sodium sulfate. HU et al [86] selected homemade barium aluminate for the desulfurization of sodium aluminate solution, where BaSO4, BaCO3 and BaSiO3 precipitation were formed. ... Flotation optimization and interaction …
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A flotation method had been used to produce the concentrate from a bastnasite ore containing approximately 10 percent total rare-earth oxides. This company also produces a 72-percent concentrate by a countercurrent decantation leach of the 60-percent flotation concentrate with a 10-percent HCl solution, and a 90-percent concentrate by calcining ...
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DOI: 10.1016/j.mineng.2022.107775 Corpus ID: 251482881; The role of sodium phytate in the flotation separation of smithsonite from calcite @article{Wang2022TheRO, title={The role of sodium phytate in the flotation separation of smithsonite from calcite}, author={Long Wang and Weijian Lyu and Weiguang Zhou and …
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Sodium dodecyl sulfate (SDS) is another collector employed in barite flotation. Chen et. al. (2019) compared NaOl and SDS on the flotation separation of barite from calcite in the presence of SS. The study showed that a recovery of 86.11 % of BaSO4 can be obtained and the reason was due to that SS in the presence of SDS preferably …
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Fresh EX solution was prepared daily to ensure minimum decomposition. Sodium sulfate and sodium tetraborate electrolyte solutions were prepared using 18 MΩ deionized water and reagent-grade salts. The pH of the sodium. sulfate solution was adjusted with reagent-grade sodium hydroxide or sulfuric acid. Sodium tetraborate …
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Sodium sulfide is one of the most widely used alkali metal sulfides in the flotation of copper, lead, and zinc minerals in their oxidized form. The sulfidization process, developed in the U.S.A. in 1915-20 for oxide copper minerals flotation, is especially suitable for oxidized lead ores in which the gangue is usually basic.
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Abstract. Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry.
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Mixtures of a petalite flotation concentrate and sodium sulphate (Na2SO4) with mass ratios of 1:0.5 and 1:1 were prepared and milled for 5 h using zirconia media in a planetary ball mill.
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flotation collector that contains aniline groups and dithiophosphate groups. In the present study, sodium hypo-chlorite solution was used to oxidize aniline aerofloat. The effect of operational parameters and optimum oxidation con-ditions on aniline aerofloat was studied, and the oxidation pathway of aniline aerofloat was proposed by analyzing its
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The beneficiation plant flotation reagent scheme: sodium carbonate as pH regulator, sodium hexametaphosphate and water glass salified with aluminum sulfate as depressants and oleic acid as collector. The application of a combined depressant of sodium hexametaphosphate and modified water glass can greatly improve the …
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