钛铁矿硫酸浸出规律研究OA

Ilmenite is an important raw material for titanium dioxide production.investigating the leaching behavior of ilmenite via the sulfuric acid method holds significant value for its efficient extraction.This study examined the effects of sulfuric acid concentration,reaction temperature,mineral particle size,and reaction time on the leaching efficiency of ilmenite,and further explored the leaching kinetics.Accord-ing to the XRF analysis,the following results were obtained:the mineral raw material used had a high con-tent of ilmenite(mainly composed of FeTiO3),with Fe2O3 content of 45.8%and TiO2 content of 7.41%when expressed in oxide form;The optimal leaching efficiency of ilmenite(73.4%)was achieved with a sulfuric acid concentration of 90%,a reaction temperature of 160℃,a reaction time of 75 min,and a miner-al particle size of-0.045 mm.The sulfuric acid leaching process of ilmenite followed a kinetic model con-trolled by external diffusion,with the fitted linear equation being y=0.060 3x+0.845 5,with and a correla-tion coefficient R2 of 0.943 3.