这次随同科学代表团到西非、北非和东非十个国家进行友好访问,有机会在加纳和摩洛哥两国参观了黄金、金刚石、铅矿和锰矿等五个选矿厂,留下了深刻的印象。虽然由于任务的限制,在每个选矿厂内逗留的时间不长,对所见到的新技术的特点,新设备的具体结构,未能深入了解,但是把它介绍出来,作为扩大见闻,启发思路的材料,也可能有一些帮助。 This time, along with the scientific delegation’s friendly visit to 10 countries in West Africa, North Africa and East Africa, I was impressed by the visits to the five beneficiation plants, namely, gold, diamond, lead ore and manganese in Ghana and Morocco. Although the duration of stay in each concentrator was not long due to the limitations of the mandate, the specific structure of the new equipment to be seen and the specific structure of the new equipment were not well understood, but it was introduced as an augmented reality. The material of ideas may also be of some help.