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浙江省科委和冶金局受国家科委和冶金部委托,1979年9月在浙江丽水召开了回转窑金属化球团中间试验技术鉴定会,来自全国48个单位的73名代表参加了会议。浙江省冶金研究所和云和钢铁厂对中间试验作了介绍,其工艺流程是:含水份8～9％的磁铁精矿粉配0.5％膨润土,不经干燥直接进润式球磨机混磨后造球;湿球团经钢丝网带式链篦机用回转窑废气干燥、预热后,进烧煤粉供热的回转窑;用无烟煤掺烟煤在低于炉料软化点温度以下还原,得到
Zhejiang Science and Technology Commission and Metallurgical Bureau commissioned by the State Science and Technology Commission and the Ministry of Metallurgical, held in September 1979 in Lishui, Zhejiang Metallurgy Pellet Test Center for Intermediate Technical Evaluation, from 48 units of the 73 representatives attended the meeting. Zhejiang Metallurgical Institute and the cloud and steel mills on the intermediate test was introduced, the process is: containing 8 to 9% moisture content of the magnetite concentrate with 0.5% bentonite, without drying directly into the run-in ball mill after grinding Making the ball; wet pellets by wire mesh belt grate with rotary kiln exhaust drying, preheating, into the pulverized coal heating rotary kiln; with anthracite mixed with coal below the softening point below the temperature reduction, get