Two-stage shear flocculation for enrichment of fine boron ore containing colemanite

Ucbeyiay, H.; Özkan, A.

doi:10.1016/j.seppur.2014.05.031

Cited by 14 publications

(3 citation statements)

References 13 publications

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“…Some methods including flotation [10,11], leaching [12], heat treatment [13], gravity separation [9], electrostatic separation [14] were tried for the beneficiation of boron minerals at a laboratory scale. However, the most economic and viable beneficiation method for boron minerals is known as the removal of clay content by washing after mechanical attrition at the industrial scale [11,15]. As a result of the beneficiation processes, a significant amount of tailings are generated and the fine fractions typically less than 3 mm are discharged to the tailing ponds with associated process water, which causes important storage, disposal, and environmental problems [16].…”

Section: Introductionmentioning

confidence: 99%

Ultrasound supported flocculation of borate tailings with differently charged flocculants

Demir¹,

Güngören²,

Baktarhan³

et al. 2021

Journal of Boron

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Mining activities are followed by mineral processing and wet beneficiation methods which generate a significant amount of tailings. Slime fractions are discharged to the tailing ponds with associated process water and this causes storage and disposal difficulties and creates severe environmental problems. Therefore, dewatering these tailings is necessary for both economic and environmental aspects. In this study, the flocculation behaviors of the boron tailings from Ağıldere and Hisarcık (Turkey) were studied in the presence of anionic, cationic, and nonionic flocculants. The results showed that the free settling condition was optimum for the Ağıldere sample. On the contrary, the settling rate of the Hisarcık sample increased considerably by the use of flocculants with a significant decrease in the turbidity of the suspension. Flocculation experiments indicated that the effect of the flocculant type on the flocculation of the Hisarcık sample can be generally ordered as anionic>cationic>non-ionic>no-flocculant. Furthermore, ultrasound was used as a supporting application. The results indicated that although the ultrasound application decreased the settling rate of both samples, lower sediment bed heights were obtained for the Hisarcık sample with ultrasound because of the formation of a more compact sediment bed in the presence of ultrasound.

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Section: Introductionmentioning

confidence: 99%

Ultrasound supported flocculation of borate tailings with differently charged flocculants

Demir¹,

Güngören²,

Baktarhan³

et al. 2021

Journal of Boron

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“…Turkey in terms of boric acid, colemanite, which has large reserves of production at low cost. Bigadic located in Balıkesir, has the largest colemanite deposits [2,3]. Commercially, colemanite (2CaO.3B 2 O 3 .5H 2 O) is an important boron mineral in boric acid production.…”

Section: Düzce üNiversitesi Bilim Ve Teknoloji Dergisi I Introductionmentioning

confidence: 99%

Çevre Dostu Ultrasonik Destekli Ekstraksiyon kullanılarak AuPdNi Tozlarının Sentezi ve Kolemanit’ten Borik Asit Elde Edilmesi: Tepki Yüzey Metodolojisi İle Optimizasyonu

Gezer

2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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In this study, simple ultrasonic assisted extraction was proposed as the environmental method at all stages of catalyst synthesis.A homogeneous catalyst was synthesized from high grade monodisperse gold-palladiumnickel nanoparticles using ultrasonic assisted extraction method (UAE) instead of conventional methods to obtain boric acid from colemanite.The most important advantage of this method is that AuPdNi nanoparticles can be easily separated and used repeatedly for further studies. Because of this feature, increasing amount of boric acid obtained from colemanite using AuPdNi nanocatalyst was investigated.For the test parameters, solvent/solids ratio, pH, extraction time and extraction temperature were used for extraction. Responsive Surface Methodology (RSM) method was used to determine optimum conditions. In this study, it was determined that presence of AuPdNinanocatalyst significantly increased boric acid activity. Transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses were performed for the characterization of nanomaterials. According to the results of the RSM test program, boric acid yield was found to be 95.73% with the aid of AuPdNi nanocatalyst.

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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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Two-stage shear flocculation for enrichment of fine boron ore containing colemanite

Cited by 14 publications

References 13 publications

Ultrasound supported flocculation of borate tailings with differently charged flocculants

Ultrasound supported flocculation of borate tailings with differently charged flocculants

Çevre Dostu Ultrasonik Destekli Ekstraksiyon kullanılarak AuPdNi Tozlarının Sentezi ve Kolemanit’ten Borik Asit Elde Edilmesi: Tepki Yüzey Metodolojisi İle Optimizasyonu

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

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