Natural Graphite Froth Flotation-An Overview

Gao, Jixuan; Bu, Xiangning; Dong, Lisha; Qiu, Yangshuai; Xie, Guangyuan; Chehreh Chelgani, Saeed

doi:10.1080/08827508.2024.2305384

Cited by 5 publications

(2 citation statements)

References 128 publications

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“…Graphite materials include natural and artificial graphite, which is widely used for developing energy storage in various modern equipment. In addition, natural graphite can be divided into vein (lump), graphite, crystalline (flake), and aphanitic (microcrystalline, amorphous) graphite in terms of crystal particle size [52,53]. Graphite used in electrical discharge machining is classified according to grain size.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Impact of Graphite Electrodes Grain Size on Technological Parameters and Surface Texture of Hastelloy C-22 after Electrical Discharge Machining with Negative Polarity

Nowicki,

Oniszczuk-Świercz,

Świercz

2024

Materials

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Electrical discharge machining (EDM) is a rapidly evolving method in modern industry that manufactures highly complex components. The physical properties of a tool electrode material are significant factors in determining the effectiveness of the process, as well as the characteristics of the machined surfaces. The current trend of implementing graphite tool electrodes in manufacturing processes is observed. Innovative material engineering solutions enable graphite production with miniaturized grain size. However, the correlation between the graphite electrode grain size and the mechanism of the process removal in the EDM is a challenge for its widespread implementation in the industry. This research introduces a new method to evaluate the impact of the graphite electrode grain size and machining parameters on the material removal effectiveness, relative tool wear rate, and surface roughness (Ra) of Hastelloy C-22 following EDM with negative polarity. The study utilized new graphite materials with a grain size of 1 µm (POCO AF-5) and 10 µm (POCO EDM-180). An assessment of the impact of the EDM process parameters on the technological parameters and the development of the surface roughness was carried out. Electrical discharge machining with fine-grained graphite electrodes increases process efficiency and reduces tool wear. Graphite grains detached from the tool electrode affect the stability of electrical discharges and the efficiency of the process. Based on the experimental results, mathematical models were developed, enabling the prediction of machining effects to advance state-of-the-art manufacturing processes. The obtained mathematical models can be implemented in modern industrial EDM machines as guidelines for selecting adequate machining parameters depending on the desired process efficiency, tool wear rate, and surface roughness for advanced materials.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Impact of Graphite Electrodes Grain Size on Technological Parameters and Surface Texture of Hastelloy C-22 after Electrical Discharge Machining with Negative Polarity

Nowicki,

Oniszczuk-Świercz,

Świercz

2024

Materials

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“…Flotation via froth serves as the primary sorting approach in the flake graphite beneficiation process [7,8], which involves the creation of micro-bubbles by micro-bubble generators that are beneficial to flake graphite mineralization. Therefore, micro-bubble generators are known as the core technology of froth flotation [9,10].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Air–Water–Flake Graphite Triple-Phase Flow Field in a Homemade Double-Nozzle Jet Micro-Bubble Generator

Dong,

Guo,

Peng

et al. 2024

Minerals

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The essential part of the flake graphite flotation apparatus is a micro-bubble generator. Developing a micro-bubble generator with a reasonable structure and superior self-absorption performance is crucial to improving flake graphite sorting. In this study, to realize the integrated treatment of the grinding and mineralization of flake graphite, the development and manufacturing of a double-nozzle jet micro-bubble generator were based on the concepts of shear-type cavitation water jets and jet pumps, among other theories. A numerical simulation of the air–water–flake graphite triple-phase flow field of the generator was conducted using the CFD method. The goal was to investigate the grinding and mineralization process of flake graphite by analyzing the distribution of the air phase’s volume percentage and the speed distribution of the air–water–flake graphite triple-phase flow field. The findings indicate that the air-phase volume percentage produced by the generator ranges from 98.3% to 99.9%, and the air-phase volume percentage is evenly distributed within the steady flow tube, achieving the mineralization function. Additionally, the flake graphite particles are dissociated from the flake graphite under the combined effect of friction shear and cavitation of the internal nozzles, thereby achieving the grinding function.

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Recent progress in the recycling of spent graphite anodes: Failure mechanisms, repair techniques, and prospects

Zhao,

Tian,

et al. 2024

Energy Storage Materials

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Natural Graphite Froth Flotation-An Overview

Cited by 5 publications

References 128 publications

Experimental Investigation on the Impact of Graphite Electrodes Grain Size on Technological Parameters and Surface Texture of Hastelloy C-22 after Electrical Discharge Machining with Negative Polarity

Experimental Investigation on the Impact of Graphite Electrodes Grain Size on Technological Parameters and Surface Texture of Hastelloy C-22 after Electrical Discharge Machining with Negative Polarity

Numerical Simulation of Air–Water–Flake Graphite Triple-Phase Flow Field in a Homemade Double-Nozzle Jet Micro-Bubble Generator

Recent progress in the recycling of spent graphite anodes: Failure mechanisms, repair techniques, and prospects

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