闪锌矿制取高纯氧化锌的研究

Study on preparation of high pure ZnO from sphalerite

为了利用闪锌矿制取高纯度氧化锌，首先在700～950℃温度范围内，将ZnS氧化分解为ZnO；然后采用流变相尿素先驱物法将氧化产物与尿素在150℃处理并过滤，将所得滤液进一步加热至650℃热处理得淡黄色高纯氧化锌．与传统的氧化锌制备方法相比，本方法工艺简单，能耗低，产品纯度高粒度小．

In this paper, a process for preparing high pure ZnO from sphalerite by rheology phase reaction was studied. First,the sphalerite was oxidized into ZnO at 700-950 ℃ ,and then the oxidized product was heated to 150 ℃ with urea by theology phase reaction after which a filtration was proceeded,and finally the filtrate was heated to 650 ℃ for gaining yellowy ZnO powders. Comparing with traditional method,the method reported in this paper has many merits such as simple procession, low expense of energy,low particle size and high purity.