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金属矿山 ›› 2016, Vol. 45 ›› Issue (10): 185-188.

• 综合利用 • 上一篇    下一篇

应用失效磷酸基抛光液制备高分子比冰晶石

郭昌明,吴君,韦柳团,崔学民,黎铉海   

  1. 广西大学化学化工学院,广西 南宁 530004
  • 出版日期:2016-10-15 发布日期:2016-11-04
  • 基金资助:

    基金项目:国家自然科学基金项目(编号:50962002),广西大学科研基金项目(编号:XJZ100256)。

Preparation of High Molecular Ratio Cryolite Using Invalid Phosphoric Acid Based Polishing Solution

Guo Changming,Wu Jun,Wei Liutuan,Cui Xuemin,Li Xuanhai   

  1. School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China
  • Online:2016-10-15 Published:2016-11-04

摘要: 向失效磷酸基抛光液中添加氟化钠,使氟化钠与失效抛光液中Al3+生成难溶的六氟合铝酸钠,生产高分子比冰晶石。结果表明,在反应温度为60 ℃、反应时间为40 min、n(NaF):n(Al)=1.3、静置时间为1.5 d条件下,铝脱除率为98.6%。所得冰晶石NaF与AlF3的分子比为3.81。该生产工艺不仅能使抛光液循环利用,而且生产工艺操作简便,所得冰晶石分子比高、产率高,具有良好的应用前景。

关键词: 失效磷酸基抛光液, 氟化钠, 高分子比冰晶石, 沉淀

Abstract: By adding sodium fluoride in invalid phosphoric-based acid polishing solution to prepare high molecular ratio cryolite via sodium fluoride reaction with Al3+ from invalid phosphoric-based acid polishing solution.Results indicated that,with reaction temperature of 60 ℃,reaction time of 40 min,n(NaF)∶n(Al)=1.3,sedimentation time was 1.5 d,aluminum removal rate was 98.6%.The cryolite molecular ratio of NaF to AlF3 is 3.81.The production process not only recycled the polishing liquid,and production process is simple,cryolite has high molecular ratio and yield rate.It has good application prospect.

Key words: Invalid phosphoric-based acid polishing solution, Sodium fluoride, High molecular ratio cryolite, Precipitation