Study on the inhibition mechanism of using citric acid to enhance the flotation separation of ilmenite from titanaugite in the Fe2 +-H2O2 pre-oxidation system - Liheng Lv; Haixiang Shen; Wei Jiang; Jiaqiao Yuan; Pei Chen; Yu Zhang; Xiang Gong; Hongyu Lu; Shaojun Bai (Journal of Environmental Chemical Engineering, 2026)