Sichuan Province-based Pangang Baima Mining, a subsidiary of Sichuan-based Chinese steelmaker Panzhihua Iron and Steel Group (Pangang Group), has announced its iron ore concentrate purification project, built by Hunan-based Zhongye Changtian International Engineering Co., a subsidiary of China Metallurgical Group Corporation (MCC), has successfully completed trial purification operations, as reported by MCC on April 3.