Method for removing thallium ions in mica lithium extraction wastewater
The invention discloses a method for removing thallium ions in mica lithium extraction wastewater, and relates to the technical field of preparation of lithium carbonate from lepidolite, and the method comprises the following steps: adjusting the pH value of the mica lithium extraction wastewater to...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a method for removing thallium ions in mica lithium extraction wastewater, and relates to the technical field of preparation of lithium carbonate from lepidolite, and the method comprises the following steps: adjusting the pH value of the mica lithium extraction wastewater to 10-11, introducing chlorine, carrying out stirring reaction, and carrying out solid-liquid separation to obtain primary impurity removal liquid; adjusting the pH value of the primary impurity removal liquid to 8-8.5, adding a sulfide thallium removal agent, carrying out a stirring reaction, adding a PAM flocculant, carrying out a flocculation reaction, and filtering to obtain a secondary impurity removal liquid and a thallium sulfide precipitate; adjusting the pH value of the secondary impurity removal liquid to 6-6.5, adding potassium ferrate and manganese chloride, stirring for reaction, and filtering to obtain thallium-removed wastewater and thallium-containing precipitate. According to the method, the thallium |
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