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The serpentine microfluidic design provides a compatible solution for high-throughput separation, which can synergize with other functional designs to improve device performance. Further, its advantages such as low cost, high biocompatibility, label-free separation and ability to integrate with on-chip biosensors are promising for clinical ...
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Experiments revealed that chromite could be separated from serpentine with a 96.8% recovery under the experimental conditions of 4 x 10 −4 M DDA, 25 mg magnetite, and …
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In this study, possible separation of chromite from serpentine in fine sizes using a magnetic carrier was investigated as a function of pH, dodecylamine (DDA) dosage, and amount of magnetite. First, the zeta potentials of minerals were determined in the absence and presence of DDA, and then magnetic carrier experiments were …
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Magnetic coating magnetic separation method was proposed to separate pentlandite from serpentine, which is difficult to separate them using flotation. Results show that under …
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Reduction roasting–magnetic separation technology has been extensively applied to the extraction of nickel from laterite nickel ores with low nickel content due to its short process flow, ... The addition of CaO could effectively destroy the serpentine structure, promote the reduction of iron and nickel oxides, and release iron and nickel in ...
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Serpentine and pentlandite were mixed by 2:1 (mass ratio, the total mass was 15 g) and separated under an addition of 3% magnetite and a magnetic field intensity of 200 kA·m − 1 using magnetic separation.
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In this study, selective magnetic coating-magnetic separation was employed to separate the pentlandite from serpentine with adding NaOL as a …
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Another geometry for inertial cell/particle separation is serpentine channels; for instance, Zhang et al. (Zhang et al., 2014) proposed a serpentine-shape biochip to separate red blood cells (RBCs) and white blood cells (WBCs) from plasma. ... The magnetic-based cell separation approach refers to a non-invasive method for …
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Serpentine is a versatile mineral family rich in Mg silicate with several polymorphic phases, mainly antigorite and lizardite, all of them with similar chemical composition (Mg3Si2O5 (OH)4). Their ...
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Metrics. Peridotite carbonation represents a critical step within the long-term carbon cycle by sequestering volatile CO 2 in solid carbonate. This has been proposed as one potential pathway to ...
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Abstract. The efficient separation of pentlandite from serpentine remains a challenging issue in the processing of nickel sulfide ores. In this study, selective …
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Abstract: Serpentine, a magnesium silicate mineral with positive surface charge in many sulfide. ores around the world, usually deteriorates the fl otation behavior by covering the target mineral ...
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to magnetic separation, as the technology is dependent on the fineness of the material. As a result, it is expected that enriching of the chromite by magnetic separation will yield favourable results. The chromite content in the courser fraction is much lower at an average of 12.79%. This is typical tailing which will be uneconomical to enrich ...
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1. Introduction. High gradient magnetic separation (HGMS) has been witnessed wide application in processing weakly magnetic minerals [1], [2], [3], [4].In most cases, HGMS is applied in the roughing separation stage and subsequent separation processes such as gravity separation [5], flotation [6], [7] or magnetic roasting followed by low intensity …
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The separation of chromite from serpentine was studied using the magnetic coating method, and the Cr2O3 grade of chromite concentrate increased by 15% (Ucbas et al., 2014). Li et al. (2015 ...
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Magnetic separation was performed using a modified Jones Wet high intensity magnetic separator (WHIMS). A background field intensity of 15,000 to 20,000 gauss could be achieved with this type of separators. ... The QEMSCAN (Table 1) shows that ore S is composed of serpentine, goethite, siderite, spinel, quartz, olivine and clays …
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As a result, pentlandite particles were coated by magnetite fines and surface magnetism of pentlandite was enhanced to enable its separation from serpentine by …
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The principle of separation was based on the effect of the magnetic field on aptamer-conjugated magnetic beads, also known as immunomagnetic beads, in a serpentine microchannel with added cavities (SMAC). The magnetic cell separation performance of the proposed structure was modeled and simulated by using COMSOL …
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To address the problem of the separation of pentlandite from serpentine, selective magnetic coating technology was proposed. 4, 5 At present, this technology …
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In this study, selective magnetic coating-magnetic separation was employed to separate the pentlandite from serpentine with adding NaOL as a coagulant, which is different from the conventional ...
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An investigation was conducted to examine the effect of magnetic bead () size on the effectiveness of isolating lung cancer cells using the immunomagnetic separation (IMS) method in a serpentine microchannel with added cavities (SMAC) structure. Carboxylated magnetic beads were specifically conjugated to target cells …
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In this study, possible separation of chromite from serpentine in fine sizes using a magnetic carrier was investigated as a function of pH, dodecylamine (DDA) dosage, and amount of magnetite. First, the zeta potentials of minerals were determined in the absence and presence of DDA, and then magnetic carrier experiments were performed in ...
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Active micromixers need external energy sources, such as acoustic, electrokinetic, pressure, magnetic, ... For the sinusoidal serpentine micromixer (base), separation vortices are eliminated at a turn with the curvature. These vortices promote chaotic advection but tend to induce a significant pressure drop. Micromixer Type1 has a …
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The effects of magnetite as the magnetic seed on magnetic coating behavior in pentlandite and serpentine system were investigated through magnetic separation tests, X-ray diffraction analysis ...
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In other words, the main challenge issue in nickel ore dressing is to realize the separation of pentlandite and serpentine. The separation of pentlandite from serpentine is typically achieved by froth flotation, ... (NaOL) in the magnetic separation of pentlandite from serpentine using magnetic coating. Powder Technol., 345 (2019), pp. 492-500.
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The efficient separation of pentlandite from serpentine remains a challenging issue in the processing of nickel sulfide ores. In this study, selective magnetic coating-magnetic separation was ...
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The results of studies of magnetic separation in a weak field of various enrichment products have shown that the greatest efficiency of separation of magnetite from accretions with rock is achieved at a lower magnetic field strength, in the range of 15.9–23.9 kA/m . When the magnetic field strength decreases from 79.6 to 15.9 kA/m, the mass ...
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In laboratory studies, nickel pyrite was separated from serpentine by magnetic separation after encapsulating the target mineral with fine magnetic particles [13][14][15][16] [17]. These studies ...
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Magnetic separation has also been recommended as a pre-treatment to enhance the effectiveness of serpentine carbonation because removal of magnetite mitigates the passivating effect of Fe-oxide precipitation on grain surfaces (Huijgen and Comans, 2003; Veetil et al., 2015).
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An excellent separation of chalcopyrite and serpentine was achieved using GM as the depressant with a lower dosage of 40 mg/L, for which the flotation recovery of chalcopyrite was more than 80% ...
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