METHOD OF RECOVERING FLUORINE
To provide a method that can recover efficiently fluorine in terms of recovery rates and costs.SOLUTION: The method includes a fixing step for adding diatomaceous earth to a solution containing fluorine, to fix the fluorine to the diatomaceous earth, a separation step for separating the diatomaceous...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | To provide a method that can recover efficiently fluorine in terms of recovery rates and costs.SOLUTION: The method includes a fixing step for adding diatomaceous earth to a solution containing fluorine, to fix the fluorine to the diatomaceous earth, a separation step for separating the diatomaceous earth having the fluorine fixed thereto, from the solution, and a recovery step for adding alkali metal salt to the diatomaceous earth separated in the separation step, to recover the fixed fluorine as a fluorine solution.SELECTED DRAWING: Figure 1
【課題】回収率の面でも費用面でもフッ素を効率的に回収可能な方法を提供する。【解決手段】フッ素を含有する溶液に対して珪藻土を添加して、珪藻土にフッ素を固定する固定工程と、フッ素が固定された珪藻土を前記溶液から分離する分離工程と、分離工程による珪藻土に対してアルカリ金属塩を加えることにより、固定されたフッ素をフッ素溶液として回収する回収工程と、を有する。【選択図】図１ |
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