Abstract: β-Li₂ TiO₃ was synthesized as precursor of the lithium-ion adsorbent via solid-phase reaction using Ti-rich material as titanium source,which was prepared by purification of melt-separated titanium slag.H₂ TiO₃ lithium-ion adsorbent was finally obtained after extracting Li⁺ from the precursor Li₂ TiO₃ via acid treatment.The synthesis temperature of precursor Li₂ TiO₃ was investigated and the adsorption properties of the adsorbent were studied using adsorption kinetics model and Langmuir adsorption isotherm equation.Precursor β-Li₂ TiO₃ with good crystallization was obtained at 750 °C.In LiOH solution with 2 g/L of Li⁺ concentration, Li⁺ adsorption capacity of the adsorbent reached 28.51 mg/g.Li⁺ adsorption capacity increased with increase in alkalinity and Li⁺ concentration of the solution.The theoretical maximum adsorption capacity calculated by Langmuir equation was 45.6 mg/g for the obtained adsorbent.