冶金安全技术情报网于1975年11月15日至20日在河北铜矿召开冶金矿山井下空气局部净化座谈会。参加会议的有矿山、科研、设计和教学单位的代表,共79人。会议期间,代表们参观了河北铜矿井下高压静电除尘装置、马鞍山矿山研究院研制的湿式旋流除尘风机、河北铜矿无底柱分段崩落采矿试验采场的地沟通风等,听取了有关单位的经验介绍,座谈讨论了井下空气局部净化工作的重要性和今后工作的意见。与会代表一致认为:井下采矿生产的各个工序都会产生大量粉尘,需要采取局部净 Metallurgical Safety Technical Information Network November 15, 1975 to 20 held in Hebei Copper Mine metallurgical mine air purification local seminar. There are 79 representatives from mines, scientific research, design and teaching units attending the conference. During the meeting, delegates visited the underground high voltage electrostatic precipitator in Hebei Copper Mine, the wet cyclone dust blower developed by the Ma’anshan Mining Research Institute, the trench ventilation in the mining trial stope at the bottomless pillar of Hebei Copper Mine, etc., and listened to relevant units The experience introduced, the discussion discussed the importance of underground air purification work and the views of future work. Delegates agreed that: all the processes of underground mining production will produce a lot of dust, the need to take a partial net