前言电锌生产中,如在循环的硫酸锌溶液中含有较多的氟氯,则将腐蚀电极,腐蚀设备。因此,必须控制它在电锌循环液中的含量。在锌精矿焙烧时,其中所含的氟,氯大部份都已挥发,因而氟氯含量控制不是太大问题。但是,由于高压氧浸工艺的发展,从炉渣及各种废料中回收氧化锌的坛加,脱氟氯问题渐显重要。对此, Preface Electric zinc production, such as circulating zinc sulfate solution contains more chlorine, it will corrode the electrode, corrosion of equipment. Therefore, it must control its content in the electrowinning solution. In the roasting of zinc concentrate, most of the fluorine and chlorine contained therein have been volatilized, so the control of fluorine and chlorine content is not a big problem. However, due to the development of high-pressure oxygen leaching, the problem of de-chlorination of fluorinated zinc from slag and various waste materials becomes increasingly important. In this regard,