低品位氧化锌矿湿法浸取制备纳米氧化锌

journal6 ›› 2010, Vol. 31 ›› Issue (5): 96-100.

低品位氧化锌矿湿法浸取制备纳米氧化锌

（吉首大学化学化工学院，湖南吉首 416000）

出版日期:2010-09-25 发布日期:2012-04-12
通讯作者: 颜文斌，教授，主要从事矿产资源加工及无机材料方向研究.
作者简介:石爱华（1964-），女，湖南吉首人，吉首大学化学化工学院副教授，主要从事无机材料方向研究
基金资助:
湖南省教育厅资助科研项目（08C717）；湖南省科技计划项目（2008GK3003）

Preparation of Nanometer Zinc Oxide Powders by Wet Leaching of Low-Grade Zinc Oxide Ore

(College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China)

Online:2010-09-25 Published:2012-04-12

摘要/Abstract

摘要：以低品位氧化锌矿为原料，通过酸浸、净化除杂得到纯净的硫酸锌溶液.以碳酸氢铵为沉淀剂，采用直接沉淀法制备纳米氧化锌粉体.考察了碳酸氢铵和硫酸锌的物质的量之比、反应温度、反应时间、前驱体碱式碳酸锌的热分解温度及时间对纳米氧化锌粒径大小及锌沉淀率或产品纯度的影响.采用X射线衍射仪、扫描电子显微镜等对产品的粒径及晶型结构进行检测.结果表明，所得产品为六方晶系氧化锌，形貌为球状，平均粒径为40 nm，ZnO质量分数达到97.5%.所设计工艺可得到技术指标达到GB/T 19589—2004 国家标准中纳米氧化锌粉体要求，且操作简便易行，易于工业化生产.

关键词： 低品位氧化锌矿, 直接沉淀法, 纳米氧化锌

Abstract: The pure ZnSO₄ solution was obtained by low-grade ZnO ore as raw materials after the process of H₂SO₄ leaching and purification.Nanometer ZnO powders were prepared by direct precipitation method using NH₄HCO₃ as precipitator.The effects of various factors such as the mole ratio of NH₄HCO₃ to ZnSO₄,reaction temperature,reaction time,thermal decomposition temperature and time of basic zinc carbonate precursors on the particle size of nanometer powders and the precipitation rate or the purity of ZnO were investigated systematically.XRD and SEM were used to characterize the structure and size of ZnO particle.The results show that the ZnO powders with hexagonal structure,spherical morphologies,40 nm of average crystal size and 97.5% of purity are obtained.The main technical indices of nanometer ZnO powders prepared by the above route met GB/T19589—2004 National Standard.The processes are simple and easy for industrialization.

Key words: low-grade zinc oxide ore, direct precipitation method, nanometer zinc oxide

石爱华, 曾孟雄, 周再兴, 颜文斌. 低品位氧化锌矿湿法浸取制备纳米氧化锌[J]. journal6, 2010, 31(5): 96-100.

SHI Ai-Hua, ZENG Meng-Xiong, ZHOU Zai-Xing, YAN Wen-Bin. Preparation of Nanometer Zinc Oxide Powders by Wet Leaching of Low-Grade Zinc Oxide Ore[J]. journal6, 2010, 31(5): 96-100.

[1]	刘文萍, 熊利芝, 彭治国. 超细氧化镁的直接沉淀法制备及其表征[J]. journal6, 2007, 28(2): 100-104.
[2]	刘建本, 易保华, 肖卓炳, 陈德根, 陈上, 张永康. 液相法制备纳米氧化锌的研究( Ⅰ)[J]. journal6, 2000, 21(2): 9-11.