Iron ore sintering is an energy＇intensive process associated with emission of pollutants in iron and steel in- dustry. In order to comprehensively evaluate the environmental impacts of sintering, a detailed life cycl...Iron ore sintering is an energy＇intensive process associated with emission of pollutants in iron and steel in- dustry. In order to comprehensively evaluate the environmental impacts of sintering, a detailed life cycle assessment of a sintering plant was conducted. Life cycle inventory showed that, in the production of 1 t sinter ore, 241.53 kg CO2 , 22.68 kg CO, 0. 294 kg SO2 , 0.63 kg NO, , 1.18 /lg dioxin and 0.48 kg dust were discharged. Global war- ming potentials, acidification potentials, photochemical ozone creation potentials and human toxicity potentials were selected as four impact categories, and the evaluation index for the sintering plant was calculated as 3.45 × 10 ^-12. Fi nally, based on the environmental impact analysis, several measures of reducing environmental [oadings of the sinte- ring plant were provided, which included the utilization of denitrification equipment, recirculation of the hot waste gas and process improvement to reduce fuel consumption.展开更多
基金Sponsored by Key Project in National Science and Technology Pillar Program during Twelfth Five-year Plan Period of China(2011BAF18B01)Hunan Platform of Youth Science and Technology Innovation and Entrepreneur(2014)
文摘Iron ore sintering is an energy＇intensive process associated with emission of pollutants in iron and steel in- dustry. In order to comprehensively evaluate the environmental impacts of sintering, a detailed life cycle assessment of a sintering plant was conducted. Life cycle inventory showed that, in the production of 1 t sinter ore, 241.53 kg CO2 , 22.68 kg CO, 0. 294 kg SO2 , 0.63 kg NO, , 1.18 /lg dioxin and 0.48 kg dust were discharged. Global war- ming potentials, acidification potentials, photochemical ozone creation potentials and human toxicity potentials were selected as four impact categories, and the evaluation index for the sintering plant was calculated as 3.45 × 10 ^-12. Fi nally, based on the environmental impact analysis, several measures of reducing environmental [oadings of the sinte- ring plant were provided, which included the utilization of denitrification equipment, recirculation of the hot waste gas and process improvement to reduce fuel consumption.
