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Combustion Ratio of Waste Tire Particle, PC and Mixture at Blast Temperature of BF
Authors:ZHANG Jian-liang  REN Shan  SU Bu-xin  LIN Yin-he  LONG Shi-gang
Affiliation:1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
2. School of Metallurgy and Resources, Anhui University of Technology, Matanshan 243002, Anhui, China
Abstract:In order to study the combustion characteristics of waste tire particle (WTP), pulverized coal (PC) and their mixture, the contents of CO, CO2 and O2 of off-gas during the combustion of WTP, PC and mixture under the condition of rich oxygen by 0-4% in blast and at 1250 ℃ were measured simultaneously using synthetically infrared analyzer, and then the corresponding combustion ratio was calculated and compared. The results showed that the burning rate of WTP reached approximately 57%, which is much higher than that of PC (only about 18%) in the initial 650 s in fresh air, and then the increase of combustion rate of PC is faster than that of WTP; the combustion rate of PC improved remarkably with the addition of WTP. Meanwhile, the combustion rates of all these materials improved with the increase of oxygen content.
Keywords:blast furnace  waste tire particle  pulverized coal  combustion ratio
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