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万华化学无水氟化氢专利
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万华化学无水氟化氢专利
万华化学集团股份有限公司申请一项名为"一种无水氟化氢生产过程中除砷的方法",公开号CN118579731A,申请日期为2024年9月3日。 目前,氟化工行业生产无水氟化氢主要采用萤石法和磷肥副产氟硅酸法等,上游原料带来的杂质例如砷、硫、Fe等元素杂质严重影响着无水氟化氢的品质,不利于下游氟盐、含氟聚合物等氟化产品使用要求。在无水氟化氢生产过程中杂质的去除是行业的难点,其中砷杂质的去除是难中之难,无水氟化氢需要控制砷含量<5ppm,电子级要求更高。采用品质差的磷矿石伴生氟资源衍生制备无水氟化氢,氟...
China Fluoride Materials Monthly Report (Chinese version) 202409
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