Quartz is commonly found alongside apatite as one of the main gangue minerals [10].Quartz differs from apatite in two key aspects: the absence of active sites, specifically referring to metal ions, on its surface and the higher electronegativity of its surface [11], [12], [13].Utilizing anionic collectors like fatty acids allows for the successful direct flotation …
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Conventionally, froth flotation has been used to separate phosphate minerals from interfering gangue via their distinct properties [7], [8].Significant research on the flotation of apatite has been conducted, but most previous studies focused on the flotation of single gangue minerals, and rarely considered the flotation of apatite containing silicon and calcium …
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tion of apatite with no flotation of magnetite. Bench-scale flotation tests showed that 50% of Atrac can be replaced with ... time was about 15 min and flotation time was 1 min at an air flow rate of 200 ml min–1. After flotation, the products were allowed to air-dry overnight. Bench Scale Flotation Tests Sampled material of 1 Kg was used for ...
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The aim of this study was to investigate the influence of bubble size on the flotation performance of apatite of a low-grade phosphate ore for different particle sizes: fine …
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In this work, a novel membrane distributor in a flotation column is developed to generate microbubbles for the flotation of fine apatite particles. A large number of …
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Conventional flotation devices can be inefficient to selectively recovery fine particles. The effect of process variables on the performance of dissolved air flotation of apatite was studied. The bubbles size distribution of the dissolved air system was measured, with values less than 100 μm. The satisfactory performance requirements for fine phosphate ore flotation …
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The apatite ore was obtained from overflow product of Chaoyang phosphate mine. After air drying, mixing and dividing, the apatite ore was kept in self-sealing bags as the sample of flotation experiments. Chemical compositions of apatite ore were analyzed and the results were shown in Table 2. The results indicated that P 2O
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The success of flotation operation depends on thriving interactions of chemical and physical variables. In this study, the effects of particle size, bubble size and collector dosage on bubble ...
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Combinations of two different types of collectors, reagent dosages, air flow rate, recycle flow rate and conditioning times are analyzed from experiments carried out in a flotation column to evaluate their effects on the grade and recovery of apatite in the concentrate.
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The flotation performance of dolomite and apatite in... In this work, GJBW, a fatty acid-based agent, was used as an efficient collector to separate dolomite from apatite to …
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The flow sheet was based on 80% passing around 100μm. Wet low intensity magnetic separation ("WLIMS") was then conducted to recover magnetite prior to flotation. The non-magnetic product from the WLIMS was reported to bulk REE and apatite flotation after dewatering by filtration. A total of 20 WLIMS and bulk flotation tests were completed ...
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In this study, vortex generators (VGs) are adopted to strengthen the turbulence and improve the collection efficiency of fine minerals in pipe flow flotation.
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The flotation performance of minerals is directly related to their hydrophobicity, hence the surface hydrophobicity of mineral is monitored by contact angle, ... In addition, the liquid flow rate was investigated by monitoring the mean square displacement (MSD) of H 2 O molecules in interface [46]. The smaller slope of the fitted MSD ...
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The effects of the key variables on the selective flotation of Mt. Weld phosphate ore were studied with the aim of optimizing the flotation process to yield a concentrate of the following specifications: >36% P 2 O 5, <3% Fe 2 O 3, P 2 O 5 (Fe 2 O 3 + Al 2 O 3) >10 at a P 2 O 5 recovery of >70%. The main difficulty was to reduce the iron content in the apatite …
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Phosphate rock is the main raw material for manufacturing the phosphorous-based fertilizers and chemicals. Phosphate rock is primarily composed of the apatite group that contains variable percentage of P 2 O 5 in a calcium matrix with gangue minerals [1]. Most of phosphate rock minerals are of low P 2 O 5 grade in nature, which demands some beneficiation …
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A process for obtaining apatite concentrates by froth flotation from phosphate ores with a substantially siliceous-carbonated matrix from igneous and sedimentary origin, which comprises: by crushing, grinding and desliming ore to create an ore pulp; conditioning the ore pulp with a collector reagent selected from at least one of the groups ...
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14 The Open Mineral Processing Journal, 2011, 4, 14-24 1874-8414/11 2011 Bentham Open Open Access Mixed Anionic/Non-Ionic Collectors in Phosphate Gangue Flotation from Magnetite Fines K. Hanumantha Rao1,*, R. K. Dwari2, S. Lu3 A. Vilinska1 and P. Somasundaran3 1Division of Mineral Processing and Metallurgy, Department of Chemical Engineering and Geosciences, …
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In cases where the contents of quartz in phosphate ores are excessively high, the direct flotation process for these phosphate ores using anionic collectors leads to the inclusions of fine-grained quartz particles in flotation concentrates, carried by the air bubbles within slurry, ultimately causing the reductions in the grades of apatite within the concentrates.
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The flotation of dolomite and apatite minerals against the pH range of pH 4.8–9.5 is presented in Fig. 8 at 150 mg/L of collector concentration in the presence of H 3 PO 4 and CaO to both adjust the pH and depress apatite. Evidently, there is a considerable difference between the floatability of the two minerals at acidic and neutral pH but ...
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The most common method to concentrate apatite from carbonate phosphate ore is reverse configuration using fatty acids as collectors and inorganic acids as apatite depressants, such as H 2 SO 4 and H 3 PO 4.This work evaluates the process based on the separation between apatite and calcite by flotation, in bench and pilot scale, using carbon dioxide …
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Combinations of two different types of collectors, reagent dosages, air flow rate, recycle flow rate and conditioning times are analyzed from experiments carried out in a flotation column to evaluate their effects on the grade and recovery of apatite in the concentrate. ... Selective flotation of apatite from calcite using 2-phosphonobutane-1,2 ...
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Over the last few decades, conventional fatty acid collectors have consistently demonstrated a high affinity for calcium-rich minerals such as apatite, calcite, and dolomite, making them commonly employed in apatite flotation processes [15], [16].However, the industrial utilization of fatty acid collectors is constrained by their limited selectivity and inadequate solubility under …
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Phosphate ore can be divided into siliceous type, calcareous type, and siliceous (calcium)-calcium (silicon) type. Flotation is the most important beneficiation method for apatite. According to the different properties of phosphate ore, Zhengkuang Machinery designs the following process flows: flotation + magnetic separation combined flow, grinding + classification + flotation flow, …
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4.. ConclusionsThe methodology used in this work for the flotation of apatite in a batch column produced the following conclusions: • The highest P 2 O 5 content corresponds to flotation with collector dosage of 74. g/ton, depressant dosage of 314 g/ton and air flow rate of 126 ; L/h.. The best conditions for P 2 O 5 recovery are collector dosage of 126. g/ton, …
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The best results in apatite flotation, i.e., the highest index of flotation response (3.58), were achieved in test F4. In this test, an anionic surfactant (Lupromin) was employed …
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The selective depression mechanism of GA in the flotation separation of apatite from dolomite was investigated using various techniques, including zeta potential, contact angle, UV-vis, FTIR, XPS, ToF-SIMS, and AFM analyses. The results demonstrated that GA increased the hydrophilicity of the dolomite surface and impeded the adsorption of NaOL ...
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A statistical analysis was performed to quantify the effects of pulp pH, wash water flow rate, circulating load flow rate, initial solid concentration, circulating load addition point …
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Kinetic test of apatite flotation showed a direct relation between the bubble size and the P 2 O 5 grade. Abstract. ... When the air flow rate and the flow rate of surfactant solution were adjusted according to the conditions of each test, the recirculation was turned on, so bubbles were captured and recorded by the high-resolution digital ...
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Traditional reagents of apatite flotation are fatty acid collectors and their derivatives, but the poor selectivity is the prominent problem during the flotation separation process ... A review of recent substance flow analyses of phosphorus to identify priority management areas at different geographical scales. Resour. Conserv. Recycl., 83 ...
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Download scientific diagram | 1: Flow diagram of the flotation circuit with mineral composition; D = Conditioner input, E = Rougher concentrate, F = Cleaner circuit (A) concentrate, G = Cleaner ...
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