Leaching of Willemite Concentrate in Sulfuric Acid Solution at High Temperature

The technical practicability of high temperature leaching process using willemite concentrate as the materials was developed in study for extracting base metals. factors affecting rates zinc, iron, and silica from were investigated, optimized maximum zinc extraction minimum iron dissolution to meet needs solution purification. Under studied conditions (413 K, 0.81 mol/L sulfuric acid, duration 60 min, liquid solid ratio (L/S) 10 mL/g, agitation speed 550 rpm, particle size −250 + 300 mesh 1.4 MPa pressure), up 97% leached into lixivium together with approximate 5.72% SiO2 21.11% Fe. performance liquid-solid separation also improved decreasing under experimental used.