Abstract
A new cold bonding technology for producing coal bearing composite pellet was developed. Laboratory tests showed that the cold bonded pellet has enhanced mechanical strength, from which good quality DRI can be produced. Based on the laboratory test results, a rotary kiln process was designed for producing DRI. Because of the high metallisation rate of the pellets and the corresponding novel operation conditions, the proposed rotary kiln process has significantly higher energy efficiency than the SL/RN process, hence emitting less CO2.
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