Development of a Generalized Strategy for Dry Beneficiation of Fine Coal over a Vibrating Inclined Deck

Chalavadi, Ganesh; Singh, Ranjeet Kumar; Sharma, Mamta; Singh, Ratnakar; Das, Avimanyu

doi:10.1080/19392699.2015.1048804

Cited by 21 publications

(4 citation statements)

References 5 publications

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“…In addition, other compound dry-type separators, namely compound separator [ 246 ], table-type air separator [ 251 ], multi stag air table [ 260 ], and Kigam air table (KAT) [ 261 ], were also developed by applying the principles and designs of conventional air table as well as FGX separator.…”

Section: Dry-type Gravity Separation Technologiesmentioning

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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Section: Dry-type Gravity Separation Technologiesmentioning

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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“…Chalavadi et al used an air table to clean Indian fine coal with a size fraction of –1+0.1 mm. The operational parameters including superficial air velocity, vibration frequency, and deck slopes all had substantial effects on the cleaning performance.…”

Section: Air Table Cleaningmentioning

confidence: 99%

Dry Cleaning of Fine Coal Based on Gas‐Solid Two‐Phase Flow: A Review

Yang

Zhao

2017

Chem Eng & Technol

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Dry cleaning of coal becomes increasingly significant to improve energy efficiency and reduce air pollutant emissions. Fine coal dry cleaning processes are mostly based on gas‐solid two‐phase flow and mainly classified into the following three categories. Modified air‐dense medium‐fluidized bed cleaning has high cleaning accuracy, but confronts the problems of product purification and medium recovery. Density‐segregation gas‐fluidized bed cleaning does not use artificial medium solids and is characterized by a simple process and stable performance. However, its cleaning accuracy is relatively low. Air table cleaning also uses no artificial medium and separates fine coal depending on the differences in density and coefficient of friction. Its cleaning accuracy is approximate to that of density‐segregation gas‐fluidized bed cleaning but has more influential factors.

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“…Fluidization dry separation technology is an effective way to solve the problem of coal separation in arid and water shortage areas. The dry separation technologies with coarse coal (+6 mm) such as air jigging, 3 air table, 4 vibrating inclined deck, 5 FGX dry separator, 6 and air dense medium fluidized bed (ADMFB) 7 are mature. However, there is no significant breakthrough in dry separation research of fine coal (−6 mm).…”

Section: Introductionmentioning

confidence: 99%

Study on the Fluidization Quality Characterization Method and Process Intensification of Fine Coal Separation in a Vibrated Dense Medium Fluidized Bed

Zhou

Shan

et al. 2021

ACS Omega

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Uniform and stable bed density is the basis of efficient coal separation by a gas−solid dense medium fluidized bed. The traditional air dense medium fluidized bed (ADMFB) is a kind of bubbling bed. By introducing vibration energy, a vibrated dense medium fluidized bed (VDMFB) with uniform and stable bed density can be formed, where the bubble merger is suppressed, the gas−solid contact can is strengthened, and the fluidization quality is also improved. In this paper, the transfer process of vibration energy in a fluidized bed is studied in detail. By calculating the coherence of pressure signals induced by vibration energy and bubbles at different bed heights, the suppression effect of vibration energy on bubble merger is analyzed. The coefficient R imp to quantitatively evaluate the improvement effect of vibration energy on the fluidization quality is proposed. The differences and incentives of density uniformity and stability in different height bed areas have been clarified under different vibration parameters and gas flow parameters. It is proposed that the optimal separation bed height area of VDMFB is about H = 40−150 mm. The separation effect of the ADMFB and the VDMFB on 1−6 mm fine coal was compared. The results show that, compared with the ADMFB, the VDMFB reduces the separation probable error, E, from 0.134 to 0.083 g/cm 3 , and the ash content of the clean coal is reduced from 18.83 to 14.97%. The vibration energy significantly improves the fluidization quality of the ADMFB and the separation effect of fine coal.

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Development of a Generalized Strategy for Dry Beneficiation of Fine Coal over a Vibrating Inclined Deck

Cited by 21 publications

References 5 publications

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

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

Dry Cleaning of Fine Coal Based on Gas‐Solid Two‐Phase Flow: A Review

Study on the Fluidization Quality Characterization Method and Process Intensification of Fine Coal Separation in a Vibrated Dense Medium Fluidized Bed

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