近十年来,国外一些炼铜厂所处理的精矿,含铜品位下降4～7％,随之冰铜品位也相应降低。为保持冶炼厂的原有产量,必须提高转炉的处理能力。据资料报道,国外提高转炉产量的途径有三:富氧吹炼铜精矿;扩大转炉炉口面积和加大风口直径;空气吹炼铜精矿。 In the past ten years, the concentrates processed by some copper smelters in foreign countries have dropped by 4% to 7% in terms of the copper content. As a result, the matte grade has also been correspondingly reduced. To maintain the smelter’s original output, it is necessary to increase the capacity of the converter. According to the information reported, there are three ways to increase converter output in foreign countries: enriching oxygen to purify copper concentrate; enlarging converter mouth area and increasing tuyere diameter; and air blowing copper concentrate.