【本刊讯】本钢南芬露天铁矿、本钢钢铁研究所和东北工学院根据1972年10月一机部、冶金部联合召开的牙轮、潜孔钻机技术鉴定会的意见,组成了工人、干部、技术人员与教师三结合的防尘试验组,对潜孔钻机的除尘问题进行了试验研究。一年来,经过对6种方案的试验对比,初步选定了气动脉冲布袋干式除尘系统,基本上解决了潜孔钻机的除尘问题。截 【Benxi hearing Bengang Nanfen open-pit iron ore, Bengang Iron and Steel Institute and Northeast Institute of Technology in accordance with the October 1972 a machine, the Ministry of Metallurgical jointly held the cone, DTH drilling rig technical appraisal will be formed Workers, cadres, technicians and teachers of three dust-proof test group, the Dust-drilling rig for a pilot study. In the past year, after comparing and testing six kinds of schemes, the pneumatic pulse bag dry dust removal system was initially selected, basically solving the dust removal problem of the down-hole drilling rig. cut