Stabilization and phase transformation of CuFe2O4 sintered from simulated copper-laden sludge.
作者： Nien-Hsun Li , Shang-Lain Lo , Ching-Yao Hu , Ching-Hong Hsieh , Ching-Lung Chen
DOI: 10.1016/J.JHAZMAT.2011.03.089
关键词:
摘要: Abstract The feasibility of stabilizing copper-laden sludge by high-temperature CuFe 2 O 4 ferritization process is investigated with different sintering temperature, and the prolonged leaching test. thermal behavior, structural morphology, phase composition, transformation stabilized were using gravimetry-differential scanning calorimetry, electron microscopy X-ray diffraction. behavior under acidic environment was evaluated modified Toxicity Characteristic Leaching Procedure (TCLP). results indicated that could be effectively formed at around 800 °C iron oxide precursor a 3 h short sintering. discovered on crystallographic spinel structures: low-temperature (800–900 °C) tetragonal (t-CuFe ) (∼1000 °C) cubic (c-CuFe ). At higher temperatures (∼1100 °C), formation cuprous ferrite delafossite (CuFeO from dissociation also noticed. Both CuFeO have better intrinsic resistance to when compared CuO TCLP strategy designed for proven beneficial in copper.
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