##tihuan2##(a) Permeate flux, (b) porous aluminum silicate-calcite ceramic microfiltration membranes sintered at 1200 °C reject oil in an oil-in-water emulsion separation process running at 0.04, 0.15, and ...
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##tihuan2##Cyclone separation of plastics by density is proposed as a potential method of achieving separations of specific types of plastics. Three ground calcite separation medias of …
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##tihuan2##Decyl-bishydroxamic acid (DCBHA) was synthesized and innovatively used as a collector for fluorite-calcite flotation separation.. DCBHA exhibited superior selectivity compared to BHA and OHA, yielded a concentrate grade of up to 70.99% with a recovery of 76.24%. at optimal conditions.. EDDA chemisorbed on bastnaesite surface by forming a …
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##tihuan2##Calcite is the most important rock-forming ore in the Earth's crust. Calcite (chemical formula: CaCO 3) comprised CaO (56.03%) and CO 2 (43.97%). It is widely distributed and is a mineral vein in various ores, including magnesite [9]. Sometimes, calcite accompanies magnesite, reducing its purity and affecting its properties and applications [10].
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##tihuan2##The selective adsorption of GG on the calcite contributed to the separation of fluorite from calcite. Previous research findings have confirmed that the band gap of calcite (5.14 eV) was lower than fluorite (12.1 eV), which means the energy required for electron transition on calcite was smaller and the electronic mobility of calcite was ...
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##tihuan2##Key words: scheelite; calcite; separation enhancement; sodium oleate; metal-inorganic complex depressant. 1 Introduction . Scheelite is rich in resources and has a low grade. It generally coexists with other calcareous gangue minerals [1]. The difficulty in the scheelite flotation is the separation of scheelite from calcium- bearing gangue ...
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##tihuan2##The reaction products of sodium humate, tannin and calcium ions in solution interact with organic compounds adsorbed on the surface of calcite, forming multilayer …
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##tihuan2##Materials. The pure mineral samples of fluorite and calcite were obtained from Guangzhou Mingfa Mineral Specimen Manufacturing Co., LTD. The samples of − 0.075 mm particle size and − 0.075 mm ...
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##tihuan2##The high purity of calcite and fluorite was derived from the Lianyungang and Sijiazhuang cities of China. The results of X-ray diffraction (XRD) (see Fig. 1) ensured that the purification of samples could satisfy the demand of experiments.The chemical composition analysis conducted by X-ray fluorescence showed that the fluorite sample …
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##tihuan2##The surface characteristics of fluorite and calcite exhibit a close analogy, posing a formidable challenge to flotation separation. Hence, the development of a highly efficient reagent for fluorite holds paramount significance and value in addressing the challenging separation of fluorite and calcium-bearing minerals.
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##tihuan2##Cyclone separation of plastics by density is proposed as a potential method of achieving separations of specific types of plastics. Three ground calcite separation medias of different grain size distributions were tested in a cylindrical cyclone to evaluate density separations at 1.09, 1.18 and 1.27 g/cm 3. The differences in separation ...
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##tihuan2##This paper proposes luteolin (LUT) as a novel depressant for the flotation-based separation of scheelite and calcite in a sodium oleate (NaOL) system. The suitability of LUT as a calcite depressant is confirmed through micro-flotation testing. At pH = 9, with LUT concentration of 50 mg·L−1 and NaOL concentration of 50 mg·L−1, …
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##tihuan2##The floatability of fluorite and calcite as a function of NaOl dosage at pH 8.0 is shown in Fig. 4.As seen in Fig. 4, flotation recoveries of fluorite and calcite significantly increased with increasing dosage of NaOl and remained constant at high collector concentration.The flotation recovery of both fluorite and calcite was over 90 % using 1.5 …
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##tihuan2##The study's findings offer new perspectives on using polymer depressants for scheelite and calcite flotation separation. With benefits like low dosage, cost, and high selectivity, POCA can serve as an alternative or supplementary depressant, enhancing traditional flotation reagents' effectiveness. These results may also be relevant for ...
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##tihuan2##DOI: 10.1016/j.mineng.2023.108490 Corpus ID: 265026356; Flotation separation of smithsonite and calcite in sodium oleate system using soluble starch as depressant @article{Xu2024FlotationSO, title={Flotation separation of smithsonite and calcite in sodium oleate system using soluble starch as depressant}, author={Luyi Xu …
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##tihuan2##The flotation separation of smithsonite from calcite and quartz using a alkyl diamine ether (GE-609) as the collector was investigated through micro-flotation experiments and the real ore ...
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##tihuan2##The flask was sealed with a plastic wrap and placed in a constant temperature shaking box at 20 °C for 30 min. Then, the pulp in the flask was taken out and centrifuged at 1800 r/min for 15 min. ... ST have a prominent selective depression effect on calcite. The flotation separation of scheelite and calcite can be realized by using ST as ...
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##tihuan2##Calcite displays good flotation performance in the presence of sodium oleate as the collector and a few studies were reported that used unconventional reagents. This article also presents various depressants …
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##tihuan2##Viable recycled residual plastic (RP) product(s) must be of sufficient quality to be reusable as a plastic or source of hydrocarbons or fuel. The varied composition and large volumes of such wastes usually requires a low cost, high through-put
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##tihuan2##These minerals are generally separated by flotation and/or magnetic separation (in the case of iron impurities). Calcite ores typically contain metal sulphide, silicate, or other calcium …
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##tihuan2##tics by density is proposed as a potential method of achieving separations of specific types of plastics. Three ground calcite separation medias of different grain size distributions were tested in a cylindrical cyclone to evaluate density separations at 1.09, 1.18 and 1.27 g/cm3. The differences in separation recov-
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##tihuan2##Cylindrical cyclone media separators using a suspended calcite separation media simulating industrial scale operations are demonstrated to effectively separate a wide variety of forms and a greater range of particle sizes of plastics by density than presently recycled. ... density media separation of plastic wastes Waste Manag. 2009 Jun;29(6 ...
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##tihuan2##The flotation separation of magnesite and calcite, which belong to alkaline earth carbonate minerals, is the most commonly used method in industrial separation (Brik, 2011; Tang et al., 2020; Yang et al., 2020). Furthermore, because magnesite and calcite have similar crystal structures, the
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##tihuan2##The growth of plastics waste has a great impact on the environment and the management of MSW by landfilling and incineration, because available capacity for landfill of MSW is declining and plastics incineration may cause emission and toxic fly and bottom ash which contains lead and cadmium (Curlee and Das, 1991).One alternative way to …
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##tihuan2##exhibited exhibited a higher selectivity for the flotation separation of scheelite from calcite and fluorite than the 733-collector alone.. Huang et al (2016) found that there is a high selectivity and recovery for the flotation of scheelite from calcite at pH 7 using Corresponding author. E-mail address: liucheng309@sina (C.Liu)
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##tihuan2##Flotation separation of malachite from calcite is hampered by the surface homogenization of the two mineral surfaces. Therefore, in this study, ammonium acetate (CH 3 COONH 4) was used to improve the flotation separation of malachite from calcite.The results of micro-flotation experiments revealed that, in the presence of CH 3 …
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##tihuan2##It is known that the flotation separation of fluorite/calcite is extremely difficult because of their similar surface features. In this research, the combination of FeSO 4 ·7H 2 O and Fe 2 (SO 4) 3 (FF) as depressant for possible flotation separation of calcite/fluorite was systematically investigated, with sodium oleate (NaOL) as collector. Besides large …
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##tihuan2##The malachite and calcite surfaces treated with CH 6 N 2 O 2 and Na 2 S·9H 2 O featured a flotation recovery rates of 82.51% and ∼ 20%, respectively, and achieved a satisfactory selective flotation separation of malachite from calcite. CH 6 N 2 O 2 could promote the formation of Cu-S on the malachite surface. A large number of Cu-S on the …
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##tihuan2##fluorite/calcite and the separation between these two minerals were investigated using micro-flotation and artificial mixture minerals flotation. The action mechanism between reagents and fluorite/calcite surfaces was studied through zeta potential, XPS analysis and computational chemistry. 2.
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