【作者】 郑伟强；

【Author】 Zheng Weiqiang;Guangdong Metallurgical & Architectural Design Institute;

【机构】 广东省冶金建筑设计研究院；

【摘要】 原地浸矿采矿方法采用的浸矿液一般为浓度1~2%的硫酸铵溶液,浸矿液注入矿体后,由于矿土对氨氮的置换和吸附、硫酸铵浸渗液的渗漏,则会对浸渗区(或开采区)及其周边一定范围内的区域造成氨氮超标,特别是浸渗区内,氨氮超标严重。为了保护一方水土,在采用原地浸矿采矿方法开采离子吸附型稀土矿同时,采取相关措施,例如自然分解、清洗采场、设置过渡带、加强集液效果及监测监控措施等,均能够有效地防止和减少氨氮对土壤和附近水体的影响。更多还原

【Abstract】 Leaching solution by in-situ leaching mining method is generally 1 to 2% concentrations of ammonium sulfate solution,the leaching liquid is injected into the body,due to leakage of ammonia nitrogen on mineral soil replacement and adsorption,ammonium sulfate infiltration fluid,will be on the infiltration area(or mining area) and its surrounding the area within a certain range caused by ammonia exceed the standard,especially the infiltration area exceed the standard seriously,ammonia nitrogen.In order to protect a side water and soil,leaching mining method mining ion adsorption type rare earth ore in the spot,take relevant measures,such as the natural decomposition of stope,cleaning,set the transition zone,strengthen the liquid collecting effect and monitoring measures,can effectively prevent and reduce the impact of ammonia nitrogen on Soil and near the water.更多还原