我厂的炼铜密闭鼓风炉自1968年建成投产以来,虽然对它的规律性有了一些认识,也不断进行过一些改进,但总是不够理想。根据在几年实践中所发现的问题,去年,我们对密闭鼓风炉的炉体结构、加料设备、烟道等进行了改进。改进后半年多来的生产实 Since our copper smelter closed blast furnace was completed and put into production in 1968, we have noticed some regularity and made some improvements. However, it is not always satisfactory. Based on the problems discovered during several years’ practice, last year we made improvements to the furnace structure, feeding equipment, flue and the like of the closed blast furnace. Improve more than six months after the production of real