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公开(公告)号：US11071967B2
公开(公告)日：2021-07-27
申请号：US15776985
申请日：2017-03-02
发明人： Wei Ma , Shibo Duan , Shuangen Yu , Fanqing Meng , Ren Wang , Jun Xu , Liyan Guo , Lei Wu , Zhuo Liu , Dazhi Tan
摘要： The invention belongs to the field of chemical separation, hydrometallurgy and resource recovery and provides a method for preparing and applying of ion-keeper adsorbent. By adjusting the pH to selective oxidation to achieve the oxidation of ferrous iron into ferric iron. Separates the iron after the hydrothermal reaction; By using of ion imprint “ion keeper” effect and biomass as raw materials, to prepare the adsorbent with internal rules, hierarchical pores and high selectivity. It can be used for deep purification of chromium solution, such as iron, aluminum, vanadium and other impurities in the solution; After the deep purification of chromium solution, then adjusting the pH, adding appropriate hydrating agent, by hydrothermal precipitation treatment of chrome, filtration, acid washing and calcination to obtain chromium oxide crystal. It achieves the purification of chromium, iron, aluminum and chromium. The recycling and comprehensive utilization of waste resources are also realized. The process is simple, the iron, aluminum, vanadium and other impurities are in the selective adsorption. Chromium solution after deep purification can be processed for high purity chromium products to provide technical support.
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