【摘要】 以电熔氧化锆为原料,采用一酸一碱法制备氧氯化锆,考察了电熔氧化锆与氢氧化钠配比、碱熔温度、碱熔时间对碱熔锆转化率的影响。结果表明,碱熔最佳工艺条件为:电熔氧化锆与氢氧化钠质量比1∶1,碱熔温度790℃,碱熔时间1.5h。采用该方法制备的氧氯化锆主品位达到36.25%,Zr回收率达91%,Na2SiO3耗量减少了98%以上,碱耗可降低52%。更多还原

【Abstract】 Zirconium oxychloride was prepared from fused zirconia with the acid-alkali method.The effects were studied of fused zirconia-sodium hydroxide proportion,alkali fusion temperature and alkali fusion time on the conversion rate of zirconium during alkali fusion.The results show that the optimum conditions for alkali fusion are as follows:mass ratio of fused zirconia to sodium hydroxide 1∶1,alkali fusion temperature790 ℃and alkali fusion time 1.5 h.Zirconium oxychloride prepared with the above method has a main grade of 36.25%,Zr recovery rate reaches 91%,Na2 SiO3 consumption reduces by more than 98%,and alkali consumption can be reduced by 52%.更多还原