摘要
研究由失效磷酸基抛光液直接制备纳米锥冰晶石新工艺。在反应温度50℃,反应时间40 min,搅拌速度200 r/min,氢氧化钠用量为理论化学计量的1.0倍,氢氟酸添加量为理论化学计量的1.2倍,静置时间1 d的条件下,失效磷酸基抛光液中铝脱除率可达90%以上,锥冰晶石产率为抛光液处理质量的8%～10%,锥冰晶石粒径在25～30 nm。与传统失效磷酸基抛光液处理工艺比较,新工艺不仅使抛光液得到再生利用,而且容易获得纯度高的纳米锥冰晶石产品,具有良好的推广应用前景。
A novel technology on direct preparation of nanometer chiolite from expired phosphoric acid-based polishing agent is investigated.With the reaction temperature 50 ℃,reaction time 40 min,stirring rate 200 r/min,dosage of hydrofluoric acid sodium hydroxide at 1.2 and 1.0 times of stoichiometry respectively and state time 1 day,the removal rate of aluminum in expired phosphoric acid-based polishing liquid reaches up to above 90%,and the productivity of chiolite is about 8%~10% of the polishing liquid with pellet diameter of chiolite about 25~30 nm.Compared to the traditional processing craft with expired phosphoric acid-based polishing liquid,the novel technology can not only make the expired phosphoric acid-based polishing liquid regeneration,but also can easily get the excellent product with high purity.It will be an ideal perspective in application and dissemination.
出处
《金属矿山》
CAS
北大核心
2010年第3期69-71,110,共4页
Metal Mine
基金
国家自然科学基金项目(编号:20866001)
