吕家坨选煤厂采用五台井筒式干燥机用于单独干燥浮选精煤。由于原设计只采用Φ1800毫米旋风筒一次集尘,集尘效果不好,干燥机开车后,黑烟滚滚,已成为一个严重的污染源,而且从烟囱跑掉的是粉精煤,因此回收精煤减少环境污染增设二次集尘更显得特别重要。为了解决上述问题,部生产司于1980年组织了唐山煤研所,铁厂、大武口、吕家坨等选煤厂的技术人员对废烟气净化及 Lujiatuo Coal Preparation Plant using five well-dryer for separate drying flotation of coal. Since the original design uses only a Φ1800 mm cyclone dust collection, dust collection is not good, the dryer driving, the black smoke billowing, has become a serious source of pollution, and run away from the chimney is the powdered coal, so the recovery of clean coal Reduce environmental pollution additional secondary dust is even more important. In order to solve the above problems, the Ministry of Production Department organized the technical personnel of Tangshan Coal Research Institute, Iron Works, Dawukou, Lujiatuo Coal Preparation Plant in 1980 to purify the flue gas and