提高精矿品位和选矿回收率,是目前各选矿厂和科研、设计单位急需研究解决的问题。这个问题相当重要。选矿回收率提高了,国家资源就能充分回收利用,避免损失浪费;精矿品位提高了,就可以减少汽车和铁路货运量,节省焦炭和其他燃料,降低产品成本,还可以充分发挥冶金炉的生产能力。对于这样一个重要问题,在“四人帮”横行时,不让过问,不 Improve concentrate grade and beneficiation recovery rate, is the current concentrator and scientific research and design institutes urgently need to study and solve the problem. This issue is quite important. Beneficiation recovery rate increased, the national resources can be fully recycled, to avoid loss of waste; improved concentrate grade, you can reduce the volume of cars and rail freight, saving coke and other fuels, reduce product costs, but also give full play to the metallurgical furnace Production capacity. For such an important issue, we should refrain from asking questions when “gang of four” runs rampant