【摘要】 <正> 碱式碳酸锌的制备有多种方法。将CO₂气体通到盛有氧化锌或氢氧化锌浆液的密闭容器即可制得;用碳酸钾处理水锌矿也可制得;也可用锌为阳极、Na₂CO₃-NaHCO₃溶液为电解液电解而得。我们认为,最简便的方法是复分解法,用硫酸锌溶液与碳酸钠溶液起反应制备碱式碳酸锌。 我们采用0.6M ZnSO₄溶液,快速倒入等体积的1M Na₂CO₃溶液中,形成碱式碳酸锌沉淀,其母液的pH值为8.9,经洗涤,60℃下烘干后分别测定其Zn、CO₃^-和OH^-的含量及水更多还原

【Abstract】 Described in this paper are the results of the study of the preparation of Zinc-type Uranium extraction absorbents and their Uranium extraction property.The Kg-grade absorbent prepared can extract Uranium at a faster rate and with a higher extraction capability.When sea water flows through it for eight days,the Uranium it absorbs_may be as much as 400mg-u/kg with the loss rate around 4%.更多还原