关键词: 除氟, 湿法炼锌, 吸附剂, 吸附机理

Abstract: With the utilization of secondary zinc resources,more and more attention has been paid to the removal of fluorine in zinc hydrometallurgy system.The sources and hazards of fluoride in zinc hydrometallurgy system were analyzed,and five kinds of fluoride removal processes,such as goethite method,precipitation method,extraction method,ion exchange method and adsorption method were mainly discussed.It was pointed out that adsorption method has the characteristics of high fluoride removal rate,low cost,no secondary pollution or small secondary pollution,and has a broad application prospect in zinc hydrometallurgy system.Combined with the research status and adsorption mechanism of activated alumina,aluminum matrix composites,metal base adsorbents,natural minerals,activated carbon and other adsorbents,the requirements of fluorine removal adsorbents used in zinc hydrometallurgy system are put forward:high adsorption capacity,strong selectivity of fluorine,acid resistance and low loss rate of zinc.The results provide theoretical guidance and research ideas for the development of adsorbents for fluoride removal in zinc hydrometallurgy.

Key words: fluoride removal, zinc hydrometallurgy, adsorbent, adsorption mechanism