【作者】 粟海锋； 蒋娜； 黎铉海； 文衍宣；

【Author】 Su Haifeng~*,Jiang Na,Li Xuanhai,Wen Yanxuan(College of Chemistry and Chemical Engineering,Guangxi Universtry, Nanning 53004,China)

【机构】 广西大学化学化工学院；

【摘要】 用木薯酒精废水作还原剂,在硫酸水溶液中浸出低品位氧化锰矿。通过正交实验和单因素实验,考察了硫酸浓度、反应温度、反应时间和木薯酒精废水用量等因素对锰浸出率的影响。结果表明,影响锰浸出率的主要因素依次为硫酸浓度、反应温度、反应时间和木薯酒精废水用量,当硫酸浓度2.25 mol·L^-1,反应温度95℃,反应时间3 h,术薯酒精废水/氧化锰矿4.4 ml·g^-1时,锰的浸出率达到92.9%。更多还原

【Abstract】 Manganese leaching from manganese ores was investigated using cassava alcohol wasterwater as reducing agent in sulfuric acid medium.Orthogonal and single-factor experiments were employed to examine the influences of concentrations of sulfuric acid,leaching temperature,reaction time and amount of cassava alcohol wasterwater on Mn leaching rates.The results showed that the main influence factors of Mn leaching rate fol- lowed by sulfuric acid concentration,reaction temperature, leaching time and amount of cassava alcohol wasterwater.The suitable leaching conditions were obtained as 2.25 mol·L^-1 H₂SO₄ and 4.4 ml·g^-1 ratio of cassava alcohol wasterwater to manganese ores for 3 h at 95℃.The Mn leaching rate by this way was 92.9%.更多还原