焦炭 jiāotàn

jiāotàn noun coke
Domain: Modern Chinese 现代汉语 , Subdomain: Metallurgy
Notes: Processed coal used in a blast furnace for steel production (CC-CEDICT '焦炭'; Guoyu '焦炭'; Mathews 1931 '焦炭', p. 99; Wikipedia '焦炭')