Guizhou Zijin is a national-level high-tech company. Shuiyindong Gold Mine was included on the list of “National Green Mines” by the Ministry of Natural Resources of the People’s Republic of China in 2020. In 2021, the major breakthrough achieved in the deep exploration of Shuiyindong Gold Mine was recognized as an Outstanding Achievement of China’s Ten-year Exploration Program by the Ministry of Natural Resources of the People’s Republic of China .

To tackle world-class problems in processing the high-arsenic, high-sulfur, high-carbon, fine-grain, refractory ores in Shuiyindong Gold Mine, Guizhou Zijin developed China’s first pressurized pre-oxidation equipment. This major breakthrough solves the key problem in technology: three-phase (solid-liquid-steam) reaction under high-temperature, high-pressure and high-acid conditions. The pressurized pre-oxidation process, recognized as a world-leading technique, fills the gap in industrial gold extraction using pressurized pre-oxidation. Guizhou Zijin is speeding up the technical upgrading and capacity expansion of the Shuiyindong Gold Mine and Domitian Gold Mine.