在毛主席革命路线的指引下,文化大革命以来,我厂的革命和生产形势和全国一样一派大好,而且愈来愈好,生产指标逐年上升,回收率闯过了八十大关。为了进一步发展大好形势,去年初,我们学习了河北铜矿的经验并参考了有关资料,结合我厂的实际情况,浮选前采用直流电场 Under the guidance of Chairman Mao’s revolutionary line and since the Cultural Revolution, the revolution and production situation in our factory have been as good as and even better in the country. The production index has risen year by year and the rate of recovery has crossed the 80th mark. In order to further develop the excellent situation, early last year, we learned the experience of Hebei Copper Mine and with reference to the relevant information, combined with the actual situation in our plant, before the flotation DC electric field