应用两段琼斯还原柱从稀土氯化物溶液中分离和纯化铕的工艺为，首先用锌汞齐将Ｅｕ（Ⅲ）还原成Ｅｕ（Ⅱ），然后在隋性气氛（ＣＯ２）中沉淀硫酸铕（ＥｕＳＯ４）。用纯的铕合成溶液评价各种参数，如琼斯柱中稀土氯化物溶液的酸度、浓度和流速，锌汞齐中汞的浓度，沉淀剂... The process of separating and purifying europium from rare earth chloride solution using two stages of Jones reduction column is as follows: First, Eu (Ⅲ) is reduced to Eu (Ⅱ) by zinc amalgam, and then europium sulfate is precipitated in inert gas (CO2) EuSO4). The pure europium synthesis solution is used to evaluate various parameters such as the acidity, concentration and flow rate of the rare earth chloride solution in the Jones column, the concentration of mercury in the amalgam, precipitation agent ...