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中南工业大学和广东省郁南县四圈化工厂合作,技术上以中南工大为主,共同进行了用价廉、高钙、高杂质钨细泥生产高纯钨酸钠和仲钨酸铵的新工艺试验研充,并成功地用于工业生产。所用钨细泥的比学成分为:WO_3 32.8～34.5,Ca 5.74～6.16,Mo0.12～0.23,P 0.85～1.32,A 0.67～1.98,SiO_2 17.43～21.57。其中杂质和WO_3的比值分别为黑钨精矿一级Ⅱ类的3.6～4.1,4.5～9.1,16.7～26.7,12.7～40.0,6.6～8.5倍。所采用的工流艺程如图1
Central South University of Technology and Yu Nannan County, Guangdong Province, four laps chemical plant, technically Central South University of Technology, jointly carried out with cheap, high calcium, high-impurity tungsten fine mud production of high-purity sodium tungstate and ammonium paratungstate new technology test Research filling, and successfully used in industrial production. The specific composition of tungsten fine mud used is: WO3 32.8-34.5, Ca 5.74- 6.16, Mo 0.12-0.23, P 0.85-1.32, A 0.67-1.98, and SiO2-2 17.43-21.57. The ratio of impurities to WO_3 was 3.6 ~ 4.1, 4.5 ~ 9.1, 16.7 ~ 26.7, 12.7 ~ 40.0 and 6.6 ~ 8.5 times, respectively, for class I of wolframite concentrate. The flow of labor used in the process shown in Figure 1