作　　者： ; ; ; ; ; ;

机构地区： 广州大学生物与化学工程学院

出　　处： 《广州大学学报（自然科学版）》 2003年第5期419-422,共4页

摘　　要： 用活性炭吸附代替泡沫塑料吸附分离干扰物,用七步法逐级提取了采用湿法方式排放的5种不同粒径黄铁矿废渣中不同相态存在的铊,并根据铊的分布讨论了各相态铊的来源.分布在废渣硅酸盐相的铊为25.0%～54.0%,硫化物相的铊为15.0%～34.0%,粘土相、有机相、铁锰相和碳酸盐相的铊之和为29.0%～37.0%,水相的铊为1.5%～2.3%.随着废渣粒径的减少,铊在水相的分布较稳定,在碳酸盐相的分布上升,在硫化物相、有机相和铁锰相的分布呈同步起伏的变化,在粘土相和硅酸盐相的分布也呈同步起伏的变化. For separation affecting factors, polyurethane foam replaced activated charcoal. Phases of five kind of different size slag of sulfuric acid were drawn with seven_step method. And origin of thallium and ownership of thallium were discussed. Thallium were dispersed 25～54 percent in silicate phase, 15～34 percent in sulfuric phase, 29～37 percent in clay phase, iron_manganese phase and carbonate phase, 1.5～2.3 percent in water phase. Following the size of slag reduction, percentage of thallium were raised in carbonate phase. Same changes of wave were displayed in sulfuric phase, organic phase(except 1.0 mm) and iron_manganese phase. It is also true in clay phase and silicate phase.

关 键 词： 黄铁矿 废渣 铊 相态分布

领　　域： [环境科学与工程]