石墨尾矿制备硅钙基纳米晶须的实验研究
Experimental study on synthesis of silicon-calcium-based nanowhisker from graphite tailings
孟凡娜 1张海军 2张晓臣 2阚侃 2陈虎3
作者信息
- 1. 黑龙江科技大学 矿业工程学院,哈尔滨 150022
- 2. 黑龙江省科学院高技术研究院,哈尔滨 150001
- 3. 黑龙江省宝泉岭农垦溢祥新能源材料有限公司,黑龙江 鹤岗 154244
- 折叠
摘要
为了利用石墨尾矿的高附加值,采用磨矿磁选工艺,去除石墨尾矿中磁性物,以水热合成法制备纳米材料硅钙基晶须,确定制备纳米材料硅钙基晶须最佳反应条件.结果表明,非磁石墨尾矿与氢氧化钙、氢氧化钠、水的质量比为1∶0.8∶0.1∶5,反应温度 230℃,反应时间 8h,生成的硅钙基纳米晶须形貌均匀,直径50～60 nm,长度1～2 μm.该研究可为石墨采选企业实现石墨尾矿高附加值利用提供参考.
Abstract
This paper is focused on the untillization of the high added value of graphite tailings.The study consists of removing the magnetic materials in graphite tailing by using grinding magnetic separation process,preparing silicon-calcium-based nanowhiskers with hydrothermal synthesis method;and identif-ying the optimal reaction conditions for preparing silicon-calcium-based nanowhiskers.The result shows that the mass ratio of non-magnetic graphite tailings to calcium hydroxide,sodium hydroxide and water is 1∶0.8∶0.1∶5 with the reaction temperature of 230℃,the reaction time of 8 h.The morphology of sili-con-calcium-based nanowhiskers is uniform with the diameter of 50-60 nm and the length of 1-2 μm.This research can provide reference for graphite mining and processing enterprises to realize high value-added utilization of graphite tailings.
关键词
石墨尾矿/磁选/水热合成法/硅钙基纳米晶须Key words
graphite tailings/magnetic separation/hydrothermal method/silicon-calcium-based nanowhis-ker引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据