一九七九年六月二十八日至七月三日,在上海铁合金厂召开了硅锰合金吹氧法生产中碳锰铁的技术鉴定会。会议由冶金部和上海市冶金局主持,参加会议的有全国二十七个单位的代表,共四十多人。为了合理利用我国锰矿资源和节省电能,上海铁合金厂从一九七五年以来,采用 From June 28 to July 3, 1979, a technical appraisal meeting for the production of carbon-carbon ferromanganese by silicon-manganese alloy blowing oxygen was held in Shanghai Ferroalloy Factory. The meeting was chaired by the Ministry of Metallurgy and the Shanghai Metallurgical Bureau. There were representatives of 27 units nationwide attending the meeting, totaling more than 40 people. In order to make rational use of manganese resources in our country and save energy, the Shanghai ferroalloy plant has been adopted since 1975