多年来,大吉山钨矿一直按部颁YB-504-65一级一类标准生产钨精矿。1981年该矿与江西有色冶金研究所共同进行了提高黑钨精矿质量的研究,在取得可靠试验数据的基础上,于1982年初进行了精选工艺流程改造,工业生产八个月以来,钨精矿的种类由原有的两种产品增加到现在的按国家标准生 For many years, the Dajishan tungsten mine has been producing tungsten concentrates according to the ministerial YB-504-65 standard. In 1981 the mine and Jiangxi Institute of Nonferrous Metallurgy jointly improve the quality of wolframite concentrate on the basis of reliable test data, based on the selection of the technological transformation process in early 1982, eight months after industrial production, tungsten Concentrate types from the original two kinds of products increased to the present by the national standard students