Abstract:With the development of electronic and information technology, lithium is playing an increasingly important role in the fields of physics, chemistry, energy, air conditioning, metallurgy, aerospace and other fields. The traditional method of extracting lithium cannot meet the human demand for lithium. Therefore, a new method of extracting lithium is urgently needed. The H2TiO3-lithium adsorbent prepared by the sol-gel method not only has low energy consumption, low cost, recycled behavior, but also has high adsorption capacity. Meanwhile, it is suitable for environments with high lithium ion concentration. In this paper, Li2TiO3 was synthesized by sol-gel method using CH3COOLi and Ti(OC4H9)4 as lithium and titanium sources, and H2TiO3-Li adsorbent was prepared by pickling with 0.25mol/L hydrochloric acid. Adsorption was carried out with lithium hydroxide gradient concentration test solution. After pickling, adsorption and selective adsorption, the products and process products were characterized and detected by X-ray diffraction (XRD) and inductively coupled plasma spectrometer (ICP), and the properties of H2TiO3-Li were studied. The results show that the optimal calcination temperature of Li2TiO3 is 650℃. H2TiO3-lithium adsorbent has selective absorption, and the adsorption capacity is positively correlated with the adsorbent concentration. The adsorption efficiency of the H2TiO3-lithium adsorbent prepared by the sol-gel method is 67%, which has good practical application value.
