A Facile and Reliable Preparing Route of Brown Fused Alumina from Aluminum Dross

摘要

Aluminum dross is the staple solid waste in electrolytic aluminum industry. Taking full advantage of the aluminum dross is of great significance for controlling environmental pollution and saving resource. In this work, brown fused alumina is successfully prepared using aluminum dross as raw material through different pretreating process for aluminum dross from different sources. The results show that the brown fused alumina product is comprised of (X-Al_2O_3 (ca.95%), NaCl (ca.l~3%) and CaF_2 (ca.l~3%), and contents of the other components are as follows: MgO 0.33%, SiO_2 1.12%, Fe_2O_3 0.41%, CaO 0.58%, TiO_2 0.13%, K_2O 0.05%, Na_2O 0.87% and V_2O_5 0.92%. This quality of the resulting brown fused alumina can fully meet the national standards of China (GB/T 2478-2008).