Research on Precipitation and Decomposition Process of Activated Zinc Ozide
The effects of carbon dioxide on precipitation of zinc carbonate and thermal decomposition conditions on particle size and activity of zinc oxide were studied, using refined zinc lixiviating solution evaporated ammonia as raw material, hypo-quality zinc solution was lixiviated by using ammonium sulfate-ammonia. The high pressure of carbon dioxide is favorable to shorten the time of zinc precipitating, reduce the particle size of zinc carbonate, increase the packing density of zinc carbonate, and decompose zinc carbonate into zinc oxide. Additionally, at low decomposition temperature, the samples with higher specific surface area and higher activity were obtained. The optimum of decomposition temperature of zinc carbonate precipitation under high pressure of carbon dioxide is 300 ～ 320℃ , the time of decomposition is 4 ～ 5h, and conducting oil could be used as a heat source of zinc carbonate decomposition in industry.
Activated zinc ozide Zinc carbonate Carbon diozide Specific surface area Thermal decomposition
Zhou Xinmu Guo Shujun Liu Houfan Xu Zhaodi Pan Qinghui
Department of Chemistry, School of Science, Nanchang University, China No 999, Seatoflearning Road, Red valley beach area, Nanchang, 330031, China
国际会议
沈阳
英文
261-264
2009-08-27（万方平台首次上网日期，不代表论文的发表时间）