氧化铜选矿回收率的世界先进水平约为90%,采用单一浮选法的回收率为84%左右。在不敢革命和没有充分依靠广大群众的时候,这的确是高不可攀的“世界高峰”。一旦毛泽东思想武装了群众,高山峻岭也会向敢于革命的人们低下头来。1965年4月,云南第三矿选矿车间选矿回收率破“八十大关”,并逐月有所提高,9月份以后 Copper oxide beneficiation recovery rate of the world advanced level is about 90%, using a single flotation recovery rate of about 84%. It is indeed an unmatched “peak of the world” when it is impossible to revolutionize and does not fully rely on the broad masses of the people. Once Mao Zedong Thought has armed the masses, high mountains and mountains will also bow their heads to those who dare to revolutionize. In April 1965, the beneficiation recovery rate of the third ore dressing plant in Yunnan Province broke through the “80th Pass” and increased month by month. After September