DIOXIN FORMATION AND SUPPRESSION IN IRON ORE SINTERING IN THE UK STEEL INDUSTRY
作者单位：Corus RD＆T Rotherham UK Corus RD＆T Rotherham UK Corus Strip Products UK Port Talbot UK Corus Construction and Industrial Scunthorpe UK
会议名称：《International Symposium on Global Environment and Steel Industry(ISES’03)》
会议日期：1000年
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学]
关 键 词：Dioxins Iron ore sintering Formation Suppression
摘 要：正Corus UK has developed technology to reduce the formation and emission of dioxins from iron ore sintering. Extensive measurements have shown that emissions from the main waste gas stacks of the five UK sinter plants were in the concentration range 0.28 to 4.4 ng I-TEQ/Nm3 from 94 measurements. The overall mean was 1.19 ng I-TEQ/Nm3 which is slightly above the achievable release limit of 1 ng I-TEQ/Nm3 specified by the UK Environment Agency for new plant. Fundamental studies concluded that dioxins are most likely formed within the sinter bed, ahead of the flame-front. Suppression trials have been successful when urea was added to the raw sinter mix prior to the strand, with at least 50% reduction in dioxin emissions. Urea addition appears to offer cost-effective dioxin suppression and trials are continuing to confirm the long-term viability of the technique.