锗存在于大多数矿石中(特别是铅矿或锌矿中),其含量甚微,一般从处理这些矿石所得的残渣中提取锗。其制取方法有: 一种方法是用硫酸浸出氧化物,然后在浓盐酸和氯气存在下蒸馏含四氯化锗的浸出液。另一种方法是使丹宁酸锗从硫酸溶液中沉淀,沉淀物经焙烧后加入浓盐酸,在通氯气的 Germanium is present in most ores (especially in lead or zinc) and is present in very small amounts. Ge is typically extracted from the residue from the treatment of these ores. The preparation method includes: one method is to leach the oxide with sulfuric acid and then distill the germanium tetrachloride-containing leachate in the presence of concentrated hydrochloric acid and chlorine. Another method is to make tannin germanium precipitated from the sulfuric acid solution, the precipitate was calcined after the addition of concentrated hydrochloric acid, chlorine