Effect of mineral matter on the combustion curve of chars

Çiǧdem Şentorun, Hanzade Haykiri-Açma, Sadriye Küçükbayrak*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In this study, the effect of mineral matter content on the combustion curve of the chars produced from 25 lignite samples originating from different parts of Turkey was investigated using differential thermal analysis (DTA). During the DTA studies, original and demineralized lignite samples were carbonized under identical conditions in nitrogen atmosphere up to 1423 K and, after cooling to the room temperature under nitrogen flow, they were heated at a constant rate of 40 K min-1 in flowing air up to 1273 K. The DTA combustion curves of the char samples produced from the original and demineralized lignites and their heat release rates are compared and discussed. It was observed that the shapes of the DTA combustion curves of the chars were strongly affected by the demineralization process. In particular, the burn-out times and the heat release rates changed markedly.

Original languageEnglish
Pages (from-to)65-73
Number of pages9
JournalThermochimica Acta
Volume277
Issue number1-2
DOIs
Publication statusPublished - 1 May 1996

Keywords

  • Coal
  • Combustion
  • DTA
  • Mineral matter

Fingerprint

Dive into the research topics of 'Effect of mineral matter on the combustion curve of chars'. Together they form a unique fingerprint.

Cite this