Optimization of Operating Parameters for Flotation of Fine Coal Using a Box-Behnken Design

Oney, Ozcan; Samanli, Selcuk; Çelik, Haluk; Tayyar, Nezih

doi:10.1080/19392699.2015.1009050

Cited by 10 publications

(6 citation statements)

References 2 publications

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“…The two kinetic model parameters ( R ∞ and K ) determined from a recovery-time set of data are effectively used to evaluate the effect of variables on the flotation process. However, it is difficult to compare flotation model parameters among tests or to establish a trend for R ∞ and K values under some conditions. − The modified flotation rate constant is an approach to compare total flotation response …”

Section: Resultsmentioning

confidence: 99%

Discrimination of Six Flotation Kinetic Models Used in the Conventional Flotation and Carrier Flotation of −74 μm Coal Fines

Wang

Zhou

et al. 2020

ACS Omega

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In this study, experimental results of conventional flotation and carrier flotation were characterized by six commonly used flotation kinetic models. Two statistical criteria (coefficient of determination, R 2, and root mean square error, RMSE) were used for comparison of fitting performance of different models. All kinetic models tested gave good levels of goodness of fit, but the second-order model with rectangular distribution (model 6) provided the best fitting performance for the experimental data of conventional flotation and carrier flotation. On this basis, two parameters, that is, modified flotation rate constant (K m) and selectivity index (SI), were used to evaluate the difference in flotation separation selectivity between conventional flotation and carrier flotation. Comparisons of K m and SI values indicated that carrier flotation significantly improved the flotation rate constant of combustible materials and flotation separation selectivity of ultrafine coal (−74 μm). In addition, measurements of average bubble size and water recovery indicated that both the coalescence of bubbles and the drainage of liquid in the froth were promoted when coarse coal particles (contact angle >90°) were employed as the carrier to assist the flotation recovery of ultrafine particles, which in turn favored the inhibition effect of the entrainment of gangue materials in carrier flotation compared to conventional flotation.

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Section: Resultsmentioning

confidence: 99%

Discrimination of Six Flotation Kinetic Models Used in the Conventional Flotation and Carrier Flotation of −74 μm Coal Fines

Wang

Zhou

et al. 2020

ACS Omega

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“…Por lo cual, se hará uso de los diseños factoriales y/o modelos de superficie de reacción para ayudan a describir los comportamientos de flotación por espuma, lo cual ha sido comprobado en diversas investigaciones [17][18][19]. El objetivo de esta investigación es demostrar que el carbón de la región carbonífera no solo obedece cierta tendencia a través de las variables de caracterización, sino también al modelo de superficie de reacción de la flotación, de dos muestras de una misma subcuenca.…”

Section: Sabinas Y Saltillito-lampacitos [16]unclassified

Representatividad De Un Modelo Lineal De Superficie Para Muestra De Carbón Mineral

et al. 2022

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La Región Carbonífera posee carbón bituminoso y sub-bituminoso con propiedades variables en sus subcuencas. Se propone un diseño factorial de 22 para desarrollar una serie de flotaciones en dos etapas (robusta y fina), determinando un modelo de reacción que prueba la tendencia de uniformidad existente dentro de cada subcuenca. Se tomaron dos muestras de la subcuenca Saltillito-Lampacitos, se prepararon a -#100, se caracterizaron y concentraron por flotación. Se propone como variable de control el Grado (%) y como variables de estudio la concentración de espumante (MIBC, [A]) y la cantidad de colector (diésel, [B]) se modeló en los programas Minitab17 y Statistica 13.3, el modelo de reacción de superficie obtenido fue Grado=92.396-0.007033[A]-0.014194[B]. La diferencia entre el modelo de reacción y los datos experimentales es aceptable por lo que se concluye que existe un comportamiento predictivo y hay una uniformidad dentro de la subcuenca.

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“…BBD was chosen because it does not contain an embedded fractional factorial design and was easy to realise in the experiment [20]. BBD was chosen because it does not contain an embedded fractional factorial design and was easy to realise in the experiment [20].…”

Section: Introductionmentioning

confidence: 99%

“…The one‐factor‐at‐a‐time (OFT) method and response surface methodology (RSM) of Box–Behnken design (BBD) were used for optimising the dyeing process. BBD was chosen because it does not contain an embedded fractional factorial design and was easy to realise in the experiment . The influence of dyeing time, dyeing temperature, diglyme content, and BHT concentration on the depth of shade ( K / S ) of the dyed wool fabrics was investigated.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant‐assisted coloration of wool with xanthophylls extracted from corn distillers’ dry grain

Chen

Duan

Chen

et al. 2016

Coloration Technology

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Xanthophylls extracted from corn distillers' dry grain were successfully applied to dye wool fabrics. As a readily available and cost-effective grain processing byproduct, corn distillers' dry grain contains appreciable amounts of isolable xanthophyll colourants, which can potentially be used in textile coloration. However, the application of xanthophylls as textile colourants has been limited, possibly owing to their hydrophobic nature and lack of stability at higher temperatures. In the present work, dyeing of wool fabrics with xanthophyll dyes was performed in the presence of a solubilising agent (diglyme) and an antioxidant (butylated hydroxytoluene). Dyeing conditions were modelled and optimised by the one-factor-at-a-time method and response surface methodology. Depth of shade of the wool fabrics dyed with 0.33 g l À1 of xanthophylls could be as high as 10.9 AE 0.5, while the colour fastness to laundering and crocking was better than grade 4. The prominent effect of butylated hydroxytoluene on depth of shade (K/S) was further studied using functionally and structurally related model compounds. The K/S-enhancing ability of butylated hydroxytoluene was found to be a synergistic result of its antioxidising and complexing abilities. Lab-extracted xanthophylls of various purities were applied to wool fabrics using the optimised dyeing and aftertreatment conditions. Depth of shade but not colour fastness was significantly affected by the impurities in xanthophylls extracted from corn distillers' dry grain. The strategy developed by this work not only extends the scope of xanthophyll application into textile coloration but also could be used for other hydrophobic and unstable natural colourants. Coloration TechnologySociety of Dyers and Colourists 208

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Optimization of Operating Parameters for Flotation of Fine Coal Using a Box-Behnken Design

Cited by 10 publications

References 2 publications

Discrimination of Six Flotation Kinetic Models Used in the Conventional Flotation and Carrier Flotation of −74 μm Coal Fines

Discrimination of Six Flotation Kinetic Models Used in the Conventional Flotation and Carrier Flotation of −74 μm Coal Fines

Representatividad De Un Modelo Lineal De Superficie Para Muestra De Carbón Mineral

Antioxidant‐assisted coloration of wool with xanthophylls extracted from corn distillers’ dry grain

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