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由冶金工业部主持的弓长岭贫赤铁矿阶段磨矿、分级重选工业试验鉴定会,于1992年11月10日至11日在鞍山市召开。参加会议的有来自全国冶金系统的矿山、院校和科研等单位的代表共45人。弓长岭选矿厂原采用的是两段闭路连续磨矿、弱磁—重选工艺流程,选别指标一直不够理
The Ministry of Metallurgical Industry bow Lengling lean hematite stage grinding, grading re-election of industrial test appraisal, in November 10, 1992 to 11 in Anshan City. A total of 45 delegates from mines, institutions, research institutes and other units attending the conference attended the conference. Gongchangling beneficiation plant was originally used two closed-circuit continuous grinding, weak magnetic - re-election process, the sorting index has been inadequate