In addition, we discussed a new kinetic model-fitting approach for coal flotation. Results show that the main gangue mineral in the fine coal is kaolinite. The middle density fraction of 1.40–1. ...

DOI: 10.1016/j.jclepro.2019.119822 Corpus ID: 212862766; Cleaner approach to fine coal flotation by renewable collectors prepared by waste oil transesterification @article{Zhu2020CleanerAT, title={Cleaner approach to fine coal flotation by renewable collectors prepared by waste oil transesterification}, author={Xiang-nan Zhu and De …

DOI: 10.1016/j.mineng.2021.107251 Corpus ID: 243614405; Deep learning-based ash content prediction of coal flotation concentrate using convolutional neural network @article{Wen2021DeepLA, title={Deep learning-based ash content prediction of coal flotation concentrate using convolutional neural network}, author={Zhiping Wen and …

flotation cell that offers high capacity, a reduction in both size and horsepower, and superior metallurgical performance. this leap in technology is based on the application of flotation fundamentals. While column cells are still required for various applications, this new approach offers a flotation alternative that provides column-like

Distributed flotation kinetics models – A new implementation approach for coal flotation. Philip Ofori. 2014, Minerals Engineering. See Full PDF Download PDF.

Abstract. In a coal preparation plant, it is a common practice to analyze the coal samples both in terms of relative density and size distributions from the process streams for the process evaluation. However, the plant measured data obtained from feed and product streams around the unit operations are subjected to measurement errors.

In this investigation, heavy oil was used as a collector associated with dry-grinding process to enhance the flotation recovery of intruded coal. The flotation recovery of intruded coal dry-ground ...

The features of flotation froth are often described by morphological and color characteristics. Compared to metal ore flotation froth, the color of coal flotation froth does not change significantly, and its color characteristics are difficult to reflect the working conditions significantly [5].Therefore, morphological information such as the size and …

In coal flotation, the hydrophobicity of fine coal is a crucial factor that affects coal flotation recovery and performance. How to accurately characterize the surface hydrophobicity of coal ...

For an appraisal of the effectiveness of contemporary decisions surrounding coal flotation, pertaining to ash content in clean coal, Zhiping Wen has proffered an approach that capitalizes on a CNN model and an interval classification-based method for the classification of froth images to ascertain coal flotation concentrate's ash content …

This paper provides a comprehensive review of coal flotation kinetics models with a special focus on the effect of particle size on coal kinetic rate, recovery, and …

Coal floatability evaluation is of vital importance in the prediction of flotation results and the design of a flotation flowsheet. In this work, a new experimental approach based on bubble ...

The effectiveness of this approach for improving coking coal flotation at different frother concentrations (10–25 ppm MIBC), collector dosages (0–400 g diesel/t) and aeration rates (1.2–2.2 cm/s) was demonstrated at laboratory scale and in batch mode, with a loudspeaker being placed in air above the flotation cell lip.

In the past, a common approach to treating coal fines (slimes) was to discard and direct them to the refuse ponds. According to a study conducted by the USA's National Research Council, over 70 to 90 ... Coal flotation can be drastically affected by oxidation (Sokolovic et al., 2012a) and by the presence of various inorganics (Somasundaran et ...

ABSTRACT The present study concentrated on a novel froth flotation process with the addition of hydrophobic magnetic particles. The effects of the concentration of hydrophobic particles, coal type, and the environment pH on the flotation behavior in the presence of hydrophobic particles were assessed. Tests results showed that the …

Abstract. The efficiency of the coal flotation process in separating fine particles is primarily influenced by the type of reagent selected. The efforts made for improved recovery of carbonaceous material with minimal ash in clean coal are endless. Today, the coal preparation industry is striving hard through several routes to improve the clean ...

a modifier to improve the flotation of coal fines. We consider the initial flotation feed at Belovskaya enrichment facility (ash content 47.15%) and the ini-tial flotation feed at Chertinskaya-Koksovaya enrich-ment facility (ash content 36.7%). Table 1 presents the results of screen analysis for the Belovskaya coal fines. We see that, in the ...

DOI: 10.1016/jpchemeng.2023.108476 Corpus ID: 264563288; Artificial intelligence for enhanced flotation monitoring in the mining industry: A ConvLSTM-based approach @article{Bendaouia2024ArtificialIF, title={Artificial intelligence for enhanced flotation monitoring in the mining industry: A ConvLSTM-based approach}, …

As a very common approach for increasing the size of the training set, data augmentation improves the generalization ability of CNN. ... Using the interval classification method to predict the concentrate ash content of coal flotation, the classification accuracy for the test set reached 96.6% in the ResNet_101 model.

Flotation is commonly used to treat fine coal (typically below 500 microns in size) and is a complex, three-phase process that is controlled by factors which can be divided into …

Coal flotation is a complex multiphase process governed by different sub-processes and interphase interactions. The coal cleaning efficiency by flotation is largely affected by many different physical and chemical factors that can be roughly classified into three main group: coal feed properties, pulp chemical and rheological properties, and …

Coal floatability evaluation is of vital importance in the prediction of flotation results and the design of a flotation flowsheet. In this work, a new experimental approach based on bubble-particle attachment kinetics (BPAK) and bubble-particle detachment kinetics (BPDK) were proposed to evaluate the floatability of coal particles.

Tao et al. demonstrated coal flotation in the presence of pico bubbles, and the efficiency of column flotation increased, but there was no significant change in the content of coal. In a similar study by Yalcin et al. [ 26 ], the reverse flotation of magnetite ore was tested in a column using the DAF method, which produces 10–100 µm ( d 50 : ...

One approach to obtaining flotation concentrates with lower ash content and reducing the loss of the coal's organic mass with the flotation waste is to employ additional …

A froth image dataset from the coal flotation site was divided into seven interval classes based on concentrate ash content, and data augmentation was used for this dataset. ... we propose a deep ...

Coal flotation is a complex process involving several phases (particles, oil droplets and air bubbles). These phases simultaneously interact with each other and with other species such as the molecules of a promoting reagent and dissolved ions in water. The physical and chemical interactions determine the outcome of the flotation process.

Request PDF | On Nov 1, 2014, Philip Ofori and others published Distributed flotation kinetics models – A new implementation approach for coal flotation | Find, read and cite all the research ...

The flotation activity of RNKh-3010 reagent with respect to coal is assessed on the basis of quantum-chemical characteristics. Calculations by a semiempirical method indicate that the compounds in ...

The effectiveness of this approach for improving coking coal flotation at different frother concentrations (10–25 ppm MIBC), collector dosages (0–400 g diesel/t) and aeration rates (1.2–2.2 ...

This approach alters the surface properties of air bubbles and provide the fast rate of flotation compared to that of direct liquid collector addition froth flotation. Most of the coal fines -600 µm (-30 mesh) are commonly treated by the froth flotation process using a bank of stirred tank cells.