Efficient and cost-effective fluorine recovery from liquid-phase wet-process phosphoric acid via two-step precipitation method

Binbin He,Yuanzhi Zhu,Yun Zu,Yunxiang Nie,Yi Mei

Separation and Purification Technology（2023）

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摘要

High purified Na2SiF6 product is directly recovered in WPA from phosphate ore using anhydrous sodium sulfate and activated silica as precipitating agent.

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关键词

Wet-process phosphoric acid,Fluorine recovery,Two-step precipitation,Reaction kinetics,Diffusion mechanism

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