“七五”以来我国锰业面貌发生了很大的变化,为了及时总结、交流经验,促进全行业技术、经济水平的提高,拟定于1991年在云南省昆明市召开第四届锰矿技术讨论会。此次技术讨论会的主题是:总结“八五”期间锰业科技进步的成就,充分反映在锰矿地质、采矿、工艺矿物学、选矿、烧结、造块、综合利用、产品深加工等方面所取得的 Since the “Seventh Five-Year Plan”, the face of China’s manganese industry has undergone great changes. In order to summarize and exchange experiences in time and promote the improvement of technology and economy of the whole industry, it plans to hold the fourth seminar of manganese ore technology in Kunming, Yunnan Province in 1991 . The theme of this technical symposium is: To summarize the achievements made by the manganese industry in scientific and technological progress during the Eighth Five-Year Plan and to fully reflect the achievements made in manganese geology, mining, process mineralogy, mineral processing, sintering, block making, comprehensive utilization and product deep processing of