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pro vyhledávání: '"Mahua Ghosh Choudhuri"'
Publikováno v:
BHM Berg- und Hüttenmännische Monatshefte. 161:95-101
The problem of properly utilizing non-coking coals in alternative iron making processes dates back to long ago. Lean grade coals with higher ash and volatile matter content (e.g. boiler grade coals) have always challenged the metallurgists to develop