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由沈阳矿山机器厂、鞍山黑色金属矿山设计院、太钢峨口铁矿组成的“三结合”小组,根据我国红矿的特点,发扬“独立自主、自力更生”的精神,自行设计、试制了φ1300×180毫米双立环电磁湿式强磁选机(简称为立环,见图1),于1976年3月11日至4月17日在首钢水厂铁矿进行了选别红矿的工业试验,其间,同时进行了弱磁-强磁-重选联合工艺流程选别水厂红矿的工业试验。参加试验的单位还有首钢矿山公司
According to the characteristics of China’s red mines, the “triple combination” team composed of Shenyang Mining Machinery Factory, Anshan Ferrous Metal Mining Design Institute and TISCO Ekou Iron Mine carried forward the spirit of “independence and self-reliance” to design and try out a prototype of φ1300 × 180 mm double vertical electromagnetic wet magnetic separator (referred to as the vertical ring, see Figure 1), from March 11, 1976 to April 17 at Shougang Iron Mine Iron Ore Red Separation carried out industrial tests, In the meantime, at the same time carried out a weak magnetic - strong magnetic - re-election process combined with the industrial water red mine industrial test. The units that participated in the experiment include Shougang Mining Company