铜陵有色公司凤凰山铜矿30多年前 ,从瑞典进口的棒—砾磨系统设备 ,长期不能达产 ,磨矿单耗极高。笔者近期进行认真考察并查阅有关资料 ,发现了存在的问题并提出砾磨机报停和棒磨机改造为双仓格子溢流碎磨机 ,替代现用棒—砾磨系统 ,现介绍如下。1凤矿碎磨系统的现状及2.9×3 Tongling Nonferrous Company Fenghuangshan Copper Mine 30 years ago, imported from Sweden rod - gravel mill equipment, long-term can not be achieved, grinding unit consumption is extremely high. I recently conducted a serious inspection and access to relevant information and found that the problems and put forward gravel mill stop and rod mill transformation of double warehouse grid overflow overflow mill, replace the existing stick - gravel mill system, are described below. 1 bumper grinding system status and  2.9 × 3