济钢建设资源节约型企业的实践与探索

Practice and Exploration of Constructing Resource Saving Enterprise in Jigang

按照发展循环经济的“3R”原则,济钢对提高能源和资源利用率、建设资源节约型企业的发展之路进行了探索。推广蓄热式燃烧技术、开发高风温热风炉技术、运用干熄焦、高炉、转炉干法除尘等技术,达到减少资源消耗和污染物排放的目的。应用干熄焦余热发电、烧结带冷机余热发电,开发炼钢余热发电技术、燃气—蒸汽联合循环发电项目等,实现了冶金余热的回收再利用。利用液态高炉渣生产微晶玻璃、矿棉等,消化化工企业的铬渣用于烧结配料、开发废塑料炼焦技术等,实现了工业废弃物的资源化治理。

According to the ＂3R＂ principle of developing cycle economy, Jigang explores a development way to increase availability of energy sources and resource and construct a resource saving enterprise. The objectives of reducing resource consume and contamination discharge are reached by popularizing regenerative combustion technology, developing high blast temperature hot-blast stove technology and using coke dry quenching （CDQ）technology, blast furnace and converter dry dedusting technology. Applying the waste heat of CDQ, waste heat from the cooling equipment of sintering machine to generate power, developing the technology of the waste heat from steelmaking being used to generate power and gas - steam combined cycle generation realize the metallurgical waste heat recovery and utilization. Hot BF slag is used to produce nucleated glass and mineral cotton; chromium slag from chemical plant is used for sinter charge mixture and waste plastic is used for coking, realizing industrial discard reusing.