Table 2.

Reactivity indexes characterizing oxidation reactivity of different rank coals.

Parameter (°C)	Heating rate (°C min−1)	Lignite	Bituminous coal	Anthracite
T ig	1	214.17	282.20	412.93
	10	—	294.83	422.33
T 20%	1	323.73	412.33	518.90
	10	379.33	481.17	617.50
T max	1	372.63	450.60	538.37
	10	481.17	573.17	665.17