Singh, Krishna Murari Prasad and Charan, Thonangi Gouri and Sarkar, Probir Kumar and Sinhamahapatra, Apurba (2026) Studies on dry beneficiation of high ash Indian thermal coals using DE-XRT sorter. International Journal of Coal Preparation and Utilization (155193).
Full text not available from this repository.Abstract
Thermal power plants in India commonly use run-of-mine (ROM) coal with ash content ranging 35–55% for electricity generation. This practice leads to low combustion efficiency, increased operational and maintenance costs and elevated emissions. Until 1996, coal beneficiation received less attention, the year marked introduction of regulations in India, restricting transportation and use of high-ash coal, above 34% over distances exceeding 1000 km. However, these regulations have yet to be fully and effectively enforced both in letter and spirit. Given the low GCV of thermal coal and increasingly stringent environmental regulations regarding ash disposal, the coal industry in India will inevitably need to establish coal washeries to meet the requirements. Traditionally, coal is beneficiated using wet methods. With the advent of dry beneficiation technologies, there is a growing opportunity to explore the application of these methods. One such promising technology is coal sorting which uses dual-energy X-ray transmission (XRT). This works on X-ray, identifies particle density and size via X-ray image distinguishes contaminants in the coarser coal particle. The identified particles are then selectively removed using a solenoid-driven pneumatic ejector array. Studies conducted at the CSIR-CIMFR laboratory with particle sizes up to 6 mm are presented in the paper.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | X-ray sorter dry beneficiation coal washing beneficiation dual energy transmission thermal coal |
| Subjects: | Coal Characterisation |
| Divisions: | UNSPECIFIED |
| Depositing User: | Mr. B. R. Panduranga |
| Date Deposited: | 29 Apr 2026 11:06 |
| Last Modified: | 29 Apr 2026 11:06 |
| URI: | https://cimfr.csircentral.net/id/eprint/2992 |
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