Effect of temperature and impurities on electrostatic separation of boron minerals

Çelik, M. S.; Yasar, E.

doi:10.1016/0892-6875(95)00043-p

Cited by 15 publications

(4 citation statements)

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“…Examples for the use of this technology are the beneficiation of mineral sands [211,238] and iron ores [26,239], the production of iron superconcentrates [240,241], and the processing of waste electric wire [242][243][244].…”

Section: Drum Separatorsmentioning

confidence: 99%

Electrostatic Separation

Dötterl

Wachsmuth

Waldmann

et al. 2016

Ullmann's Encyclopedia of Industrial Chemistry

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Section: Drum Separatorsmentioning

confidence: 99%

Electrostatic Separation

Dötterl

Wachsmuth

Waldmann

et al. 2016

Ullmann's Encyclopedia of Industrial Chemistry

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“…After years of resource utilization, the reserve of ascharite has been depleted, and the major remaining mineral is paigeite. After magnetic separation, boron concentrates and boron-bearing iron tailings are obtained [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Mechanism and Kinetics of Ammonium Sulfate Roasting of Boron-Bearing Iron Tailings for Enhanced Metal Extraction

Cui

Free

et al. 2019

Processes

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The large amount of boron-bearing iron tailings in China is a resource for metals that needs to be more completely and efficiently utilized. In this evaluation, the ammonium sulfate roasting process was used to make a controllable phase transformation to facilitate the subsequent extraction of valuable metals from boron-bearing iron tailings. The effects of roasting temperature, roasting time, the molar ratio of ammonium sulfate to tailings, and the particle size on the extraction of elements were investigated. The orthogonal experimental design of experiments was used to determine the optimal processing conditions. XRD (X-Ray Diffractomer), scanning electron microscope (SEM), and simultaneous DSC–TG analyzer were used to assist in elucidating the mechanism of ammonium sulfate roasting. The experimental results showed that nearly all Fe, Al, and Mg were extracted under the following conditions: (1) the molar ratio of ammonium sulfate to iron tailings was 3:1; (2) the roasting temperature was 450 °C; (3) the roasting time was 120 min.; and, (4) the particle size was less than 80 μm. The kinetics analysis indicated that the sulfation of metals was controlled by internal diffusion, with the apparent activation energies of 17.10 kJ·mol−1, 17.85 kJ·mol−1, 19.79 kJ·mol−1, and 29.71 kJ·mol−1 for Fe, Al, Mg, and B, respectively.

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“…Several processes including attrition scrubbing followed by classification, thermal decomposition-decrepitation, electrostatic separation, and flotation have been proposed to separate colemanite from the tailings. Çelik & Yasar (1995) examined the effect of temperature and impurities on the electrostatic separation of boron minerals including colemanite and proposed beneficiation schemes based on the conductivity of boron minerals. Gül et al (2006) also showed that a boron concentrate yielding 44.5% B 2 O 3 at 68.4% recovery could be produced, via attrition scrubbing-classification followed by flotation methods, from the tailings of a colemanite ore processing plant.…”

Section: Introductionmentioning

confidence: 99%

“…Gül et al (2006) also showed that a boron concentrate yielding 44.5% B 2 O 3 at 68.4% recovery could be produced, via attrition scrubbing-classification followed by flotation methods, from the tailings of a colemanite ore processing plant. Çelik & Yasar (1995) examined the effect of temperature and impurities on the electrostatic separation of boron minerals including colemanite and proposed beneficiation schemes based on the conductivity of boron minerals. The conductivity acquired by boron and clay minerals was attributed to the impurities present in the form of substituted alkali earth elements such as lithium and strontium.…”

Section: Introductionmentioning

confidence: 99%

Application of magnetic separation technology for the recovery of colemanite from plant tailings

Alp

2008

Waste Manag Res

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In this study, colemanite was recovered from tailings produced by the Kestelek (Turkey) Processing Plant by magnetic separation. Magnetic susceptibility measurements revealed that colemanite is diamagnetic in character whereas gangue minerals are weakly paramagnetic, apparently due to the presence of the iron-bearing silicates such as smectite and, to a less extent, illite. Three-stage magnetic separation tests were performed on the size fractions coarser than 75 microm produced from the tailings (31.52% B(2)O(3)) using a high-intensity permanent magnetic separator. Under the test conditions a colemanite concentrate with a B(2)O(3) content of 43.74% at 95.06% recovery was shown to be produced from the tailings. The mineralogical composition of the tailings appears to allow the removal of gangue minerals by magnetic separation and hence the production of a concentrate of commercial grade.

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Effect of temperature and impurities on electrostatic separation of boron minerals

Cited by 15 publications

References 1 publication

Electrostatic Separation

Electrostatic Separation

Mechanism and Kinetics of Ammonium Sulfate Roasting of Boron-Bearing Iron Tailings for Enhanced Metal Extraction

Application of magnetic separation technology for the recovery of colemanite from plant tailings

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