七十年代以来,国外炼锌厂竞相采用高温高酸浸出,铁矾或针铁矿除铁新工艺,使湿法炼锌的优越性更加突出。为配合本省建厂的需要,我们用葫芦岛锌厂及本省的锌焙砂进行了高温高酸浸出、铁矾除铁的试验。对这两种原料不论是采用两段、三段或四段浸出流程,我们都遇到了硅酸盐的问题:物料经高温高酸浸出,大量 Since the seventies, foreign zinc smelters competing to adopt high temperature and high acid leaching, iron alum or goethite iron removal process, so wet zinc smelting superiority more prominent. In order to meet the needs of the province to build factories, we use the Huludao Zinc Plant and the province’s zinc roasted for high temperature and acid leaching, iron alum iron test. Both of these two raw materials, whether using two, three or four leaching process, we have encountered the problem of silicate: material by high temperature and high acid leaching, a large number