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Indian coals are reported for high mineral content but low sulfur content from Gondwana origin. Intimately mixed solid, liquid, and gaseous phases with allothigenic and authigenic origins make up coal, a sedimentary rock, which is a complex mixture of organic and inorganic materials. India's vast coal reserves contain significant amounts of ash-forming elements, the majority of issues arising during the use of coal are due to, elements in coal and seen as a nuisance creator frequently. Kaolinite, quartz, pyrite, clays, and carbonates are groups of minerals that are abundantly observed in coal. Which present both challenges and opportunities for sustainable utilization. This study explores the application of multiple thermo-processes to investigate the recovery potential of these ash-forming elements from Indian coal at a specific gravity cut of 1.80 g/cc. Through controlled thermal treatments, including combustion, gasification, and pyrolysis, we analyzed the transformation behavior of mineral matter and its potential for value- added applications. Advanced characterization techniques such as XRD and ICP-OES techniques are employed to assess the redistribution and recovery efficiency of critical elements. The study further emphasizes a zero-waste approach by exploring the utilization of recovered minerals in construction materials, metal extraction, and environmental applications. The findings provide insights into optimizing thermal processes for efficient resource recovery, contributing to sustainable coal utilization and circular economy practices.

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Using Multiple Thermo-Processes for Understanding the Beneficial Recovery of the ASH-Forming Elements in Indian Coal at 1.80 g/cc Gravity Cut and Their Zero- Waste Utilization

  • 会议论文

  • 发表日期：

    2026年

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  • Priyanka Kumari Ujala,
  • K. M. P. Singh,
  • Rohit Kumar Sharma,
  • P. Ravindran

摘要

Indian coals are reported for high mineral content but low sulfur content from Gondwana origin. Intimately mixed solid, liquid, and gaseous phases with allothigenic and authigenic origins make up coal, a sedimentary rock, which is a complex mixture of organic and inorganic materials. India's vast coal reserves contain significant amounts of ash-forming elements, the majority of issues arising during the use of coal are due to, elements in coal and seen as a nuisance creator frequently. Kaolinite, quartz, pyrite, clays, and carbonates are groups of minerals that are abundantly observed in coal. Which present both challenges and opportunities for sustainable utilization. This study explores the application of multiple thermo-processes to investigate the recovery potential of these ash-forming elements from Indian coal at a specific gravity cut of 1.80 g/cc. Through controlled thermal treatments, including combustion, gasification, and pyrolysis, we analyzed the transformation behavior of mineral matter and its potential for value- added applications. Advanced characterization techniques such as XRD and ICP-OES techniques are employed to assess the redistribution and recovery efficiency of critical elements. The study further emphasizes a zero-waste approach by exploring the utilization of recovered minerals in construction materials, metal extraction, and environmental applications. The findings provide insights into optimizing thermal processes for efficient resource recovery, contributing to sustainable coal utilization and circular economy practices.