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Preparation method of low-fluorine high-purity tantalum pentoxide optical coating material
The invention discloses a preparation method of a low-fluorine high-purity tantalum pentoxide optical coating material, and particularly relates to the technical field of tantalum metal oxide preparation, which comprises the following steps: dissolving metal tantalum in a mixed acid of hydrofluoric acid and nitric acid, extracting and purifying to obtain a high-purity tantalum liquid, introducingthe high-purity tantalum liquid into a neutralization precipitation tank, adding liquid ammonia into the high-purity tantalum liquid at the same time, introducing a solution containing tantalum hydroxide precipitate into a filter press after the tantalum hydroxide precipitate appears, adding ammonia-containing hot pure water at the same time, then obtaining tantalum hydroxide, and then repeatedlyadding tantalum hydroxide into the filtering process for multiple times. According to the method, tantalum pentoxide is heated through electron beams, the purpose of heating calcination can be achieved without high temperature, grain distribution is uniform, the crystal system structure is more ideal, meanwhile, ammonia-containing hot pure water is repeatedly used for assisting the filtering process, it is guaranteed that the effect of removing fluorine in the tantalum hydroxide solution is more ideal and sufficient, and the fluorine content in the product is greatly reduced.
本发明公开了一种低氟高纯五氧化二钽光学镀膜材料制备方法，具体涉及钽金属氧化物制备技术领域，包括以下步骤，首先将金属钽溶入氢氟酸和硝酸混酸中，然后萃取提纯后，得到高纯钽液，将高纯钽液通入中和沉淀槽中，同时向高纯钽液中加入液氨，在出现氢氧化钽沉淀后，将含有氢氧化钽沉淀的溶液通入压滤机中，同时加入含氨热纯水，然后得到氢氧化钽，然后多次重复将氢氧化钽加入过滤过程。本发明通过采用电子束对五氧化二钽进行加热处理，不用使用较高的温度即可达到加热煅烧目的，晶粒分布均匀，晶系结构更加理想，同时采用多次使用含氨热纯水辅助过滤过程，保证对氢氧化钽溶液中氟的去除效果更加理想充分，大大降低产品中的含氟量。
Preparation method of low-fluorine high-purity tantalum pentoxide optical coating material
The invention discloses a preparation method of a low-fluorine high-purity tantalum pentoxide optical coating material, and particularly relates to the technical field of tantalum metal oxide preparation, which comprises the following steps: dissolving metal tantalum in a mixed acid of hydrofluoric acid and nitric acid, extracting and purifying to obtain a high-purity tantalum liquid, introducingthe high-purity tantalum liquid into a neutralization precipitation tank, adding liquid ammonia into the high-purity tantalum liquid at the same time, introducing a solution containing tantalum hydroxide precipitate into a filter press after the tantalum hydroxide precipitate appears, adding ammonia-containing hot pure water at the same time, then obtaining tantalum hydroxide, and then repeatedlyadding tantalum hydroxide into the filtering process for multiple times. According to the method, tantalum pentoxide is heated through electron beams, the purpose of heating calcination can be achieved without high temperature, grain distribution is uniform, the crystal system structure is more ideal, meanwhile, ammonia-containing hot pure water is repeatedly used for assisting the filtering process, it is guaranteed that the effect of removing fluorine in the tantalum hydroxide solution is more ideal and sufficient, and the fluorine content in the product is greatly reduced.
本发明公开了一种低氟高纯五氧化二钽光学镀膜材料制备方法，具体涉及钽金属氧化物制备技术领域，包括以下步骤，首先将金属钽溶入氢氟酸和硝酸混酸中，然后萃取提纯后，得到高纯钽液，将高纯钽液通入中和沉淀槽中，同时向高纯钽液中加入液氨，在出现氢氧化钽沉淀后，将含有氢氧化钽沉淀的溶液通入压滤机中，同时加入含氨热纯水，然后得到氢氧化钽，然后多次重复将氢氧化钽加入过滤过程。本发明通过采用电子束对五氧化二钽进行加热处理，不用使用较高的温度即可达到加热煅烧目的，晶粒分布均匀，晶系结构更加理想，同时采用多次使用含氨热纯水辅助过滤过程，保证对氢氧化钽溶液中氟的去除效果更加理想充分，大大降低产品中的含氟量。
Preparation method of low-fluorine high-purity tantalum pentoxide optical coating material
一种低氟高纯五氧化二钽光学镀膜材料制备方法
LU PENGJIAN (author) / ZHANG WEI (author)
2021-04-02
Patent
Electronic Resource
Chinese
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