Size by Size Separation Characteristics of a Coal Cleaning Jig

Paul, Subha Ranjan; Bhattacharya, Sumantra

doi:10.1007/s12666-018-1275-2

Cited by 8 publications

(5 citation statements)

References 1 publication

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“…It is evident from the table that there exists significant disparity in density between pyrite and other minerals within coal gangue. Jig separation involves stratifying coal gangue particles based on their density and particle size to achieve effective separation [36]. Hence, employing a jig for separating pyrite from coal gangue is indeed feasible.…”

Section: Methodsmentioning

confidence: 99%

Study on the Influence of Particle Size Distribution on the Separation of Pyrite from Coal Gangue by Jigging

Hou,

Xi,

Wang

et al. 2024

Coatings

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The presence of pyrite poses a significant impediment to the comprehensive utilization of coal gangue, which is a prevalent solid waste in industrial production. However, the current efficacy of jig separation for pyrite in fine-grade coal gangue remains unsatisfactory. To investigate the influence of particle size distribution on the jig separation of pyrite in fine-grade coal gangue, the raw material was crushed to less than 2 mm using a jaw crusher and subsequently sieved to obtain its particle size distribution curve. Upon fitting the curve, it was observed that it tends towards the Rosin-Rammler (RRSB) and Fuller distributions. Leveraging these two-parameter distribution curves, adjustments were made to determine the mass within each particle size range before conducting thorough mixing followed by jig separation. The results indicate that for fine-grade gangue particles smaller than 2 mm, the RRSB distribution with a uniformity coefficient of n = 0.85 exhibits the most effective separation, although it is comparable to the separation achieved using the size distribution of raw ore. On the other hand, employing the Fuller distribution with modulus of distribution q = 1.5 yields superior separation performance. In comparison to the raw ore, the concentrate shows an increase in sulfur (S) and iron (Fe) content by factors of 3.4 and 2.4, respectively. Furthermore, compared to the RRSB distribution, there is an increase in S and Fe content by 1.91% and 2.30%, respectively; the contents of S and Fe in tailings is 0.71% and 2.72%, which can be directly used as raw materials for coating materials. Therefore, for fine-grade coal gangue particles, jigging under the Fuller distribution demonstrates better effectiveness than under the RRSB distribution.

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Section: Methodsmentioning

confidence: 99%

Study on the Influence of Particle Size Distribution on the Separation of Pyrite from Coal Gangue by Jigging

Hou,

Xi,

Wang

et al. 2024

Coatings

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“…6 b), and Batac jigs ( Fig. 6 c) are used [ [94] , [95] , [96] , [97] , [98] ]. The Denver jig is applied more for the separation of ores in mineral processing and only found limited application in coal cleaning.…”

Section: Conventional Gravity Separation For Coal Cleaningmentioning

confidence: 99%

“…Recent studies about jig separation are looking into the effects of various parameters including inherently controllable (manipulated variables) and uncontrollable factors (disturbance variables) [ 94 , 97 , 102 , 103 ]. Moreover, studies on how to modify and apply jig separation for fine coal particles are increasing [ 98 , 103 , 104 ].…”

Section: Conventional Gravity Separation For Coal Cleaningmentioning

confidence: 99%

Conventional and recent advances in gravity separation technologies for coal cleaning: A systematic and critical review

Phengsaart¹,

Srichonphaisan²,

Kertbundit³

et al. 2023

Heliyon

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“…It was determined that >0.5 mm coal can be straightforwardly separated using dense medium cyclones and jigs due to the degree of washability, however, for <0.5 mm the efficiency of using dense medium separation diminishes [34,51]. On the other hand, the efficiency of flotation for <0.5 mm is far greater than dense medium separation, making it more suitable for fluorine removal.…”

Section: A Proposed Beneficiation Circuit For <50 MM Coalmentioning

confidence: 99%

Characterization and Removal Potential of Fluorine in Lignite from a Mine in Shaanxi Province, China: A Case Study

Zhou

et al. 2022

Minerals

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Fluorine appears in coal and is released into the atmosphere upon combustion, resulting in harmful impacts on the environment and life, which needs to be removed from coal before utilization. Coal can be processed by flotation and gravity separation to reduce its fluorine content. In this study, a lignite sample from a mine in Shaanxi Province, China, was characterized using the float–sink test, sieving test, X-ray diffraction (XRD), and polarized light microscopy. Mineralogical analysis indicated that the fluorine in coal is mainly contained in Muscovite and polylithionite, and partly in pyrite. The washability and floatability analyses were employed to evaluate the extent of fluorine removal from >0.5 and <0.5 mm size fractions of lignite, respectively. Compared to the raw sample that contained 347.74 μg/g fluorine content, the proposed combination of gravity-flotation separation process decreased the fluorine content to 90.14 μg/g, which meets the requisites of coal standards.

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Size by Size Separation Characteristics of a Coal Cleaning Jig

Cited by 8 publications

References 1 publication

Study on the Influence of Particle Size Distribution on the Separation of Pyrite from Coal Gangue by Jigging

Study on the Influence of Particle Size Distribution on the Separation of Pyrite from Coal Gangue by Jigging

Conventional and recent advances in gravity separation technologies for coal cleaning: A systematic and critical review

Characterization and Removal Potential of Fluorine in Lignite from a Mine in Shaanxi Province, China: A Case Study

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