“双球烧结工艺”系鞍钢发明创造的,于1987年1月29日被国家授予发明专利权,并且在1989年3月26日通过冶金部技术鉴定.“八五”期间,鞍钢11号、10号高炉通过大修均将改为2580m~3的大型高炉.为了充分发挥大型高炉的优势,必须有精料为基础,而已配套改造的新三烧结厂和200万吨球团矿厂即使达产也难完全满足炼铁生产需求. “Double-ball sintering process” was invented and created by Ansteel on January 29, 1987, and was granted the invention patent by the state and passed the technical appraisal of the Ministry of Metallurgy on March 26, 1989. During the “Eighth Five-Year Plan”, Anshan Iron and Steel 11, No. 10 blast furnace will be overhaul will be replaced by a large blast furnace 2580m ~ 3. In order to give full play to the advantages of large blast furnace, must be based on fine materials, and has been supporting the transformation of the new three Sintering Plant and 200 tons of pellets even if the production reached It is difficult to fully meet the iron production needs.