Ion-absorbed-type rare earth deposit which is the most important strategic resource is distributed extensively in the south of China, such as Jiangxi, Guangdong and Guangxi provinces. It often exist in the form of ions absorbed in clay minerals, and is characterized by middle-heavy rare earth enrichment, simple mining and leaching process and low cost. However, groundwater pollution of heavy metal, ammonia nitrogen and sulfate are very serious during mining. Therefore, it is urgent to perform groundwater monitoring in the mine. In Guangdong province, we used automatic monitoring facilities to perform groundwater dynamic monitoring experiments and made significant progress. Through this research, we obtained changing values of key indicators in the water, i.e., pH value, ammonia nitrogen, etc. In this paper, we present a new green mine environment monitoring system in ion-absorbed-type rare earth deposit. The system integrating in-situ leaching process, system of groundwater monitoring with wireless data transmission, and the control system of environment pollution is to control the influence on groundwater during the mining of ion-absorbed-type rare earth deposit. It may provide technical support for achieving the goal of green mining.

ion-absorbed-type rare earth deposit  /  groundwater pollution  /  ammonia nitrogen  /  wireless monitoring on groundwater