浮选渣中碲的浸出研究  

Analysis on the Leaching of Te in Floatation Slag

作　　者：宋旭俊 施辉献 SONG Xujun;SHI Huixian(Kunming Engineering&Research Institute of Nonferrous Metallurgy Co.,Ltd.,Kunming 650051,China;Kunming Metallurgical Research Institute Co.,Ltd.,Kunming 650503,China)

机构地区：[1]昆明有色冶金设计研究院股份公司,云南昆明650051 [2]昆明冶金研究院有限公司,云南昆明650503

出　　处：《有色金属设计》2022年第2期18-22,共5页Nonferrous Metals Design

摘　　要：针对碲品位3.76%的浮选渣,采用碱浸法浸出其中的碲。重点研究碱浸温度、碱浓度、碱浸时间、碱浸液固比、碱浸搅拌转速对碲浸出率的影响,并结合粉末X射线衍射仪(XRD)分析浮选渣和浸出渣的物相变化。结果表明:影响碲浸出最关键的因素为温度和碱耗量。碲的浸出主要是TeO_(2)溶于碱液中形成Na_(2)TeO_(3)。碱浸最佳浸出工艺参数为:浸出温度80℃、液固比为4:1、浸出液浓度120 g/L、浸出时间3 h、搅拌转速为300 r/min。In a tellurium leaching with alkali from flotation residue of 3.76%tellurium,the effects of leaching temperature,alkali concentration,duration,liquid-solid ratio and stirring speed on tellurium leaching rate are studied,and the phase change of flotation slag and leaching slag is analyzed by powder x-ray diffraction(XRD).The results showed that the key to the tellurium leaching are temperature and alkali consumption and TeO_(2) dissolves in lye to form Na_(2)TeO_(3).The best technological parameters for the alkali leaching are as follows:temperature of 80℃,liquid to solid ratio of 4:1,leaching solution concentration of 120 g/l,leaching duration of 3h and stirring speed of 300 r/min.

关 键 词：浮选渣 碲 碱浸 浸出率 

分 类 号：TQ330.38[化学工程—橡胶工业]