由我院选冶系副教授王成功课题组承担研究、设计、调产的河北丰宁窄岭金矿由75t川浮选厂改造为100t川黄金选冶厂的技改项目，一次性试车成功．主要技术经济指标达到或超过设计指标，达国内同类选冶厂先进水平，为该矿年创经济效益达400余万元，解决了该县金精粉长期外销和原矿? By the research and design of the successful project team of Wang Chenggong, associate professor of the Department of Metallurgy and Metallurgy in Hebei Province, the Fengning narrow ridge gold mine in Hebei Province was transformed from a 75t flotation plant into a 100t Sichuan gold smelter. The one-time test was successful. The main technical and economic indicators meet or exceed the design targets, up to the advanced level of similar smelters in the country, the economic benefits for the mine reached 4 million yuan, to solve the county long-term export of gold powder and ore?