摘要
通过105d的连续静态浸泡试验，研究了某钼尾矿浸泡液pH值及Ni^2＋离子浓度随浸泡时间的变化规律。结果表明：该尾矿对酸性溶液有很强的中和能力，可将初始pH值为3．5～6．0的酸性溶液在2～8d内中和到pH=7左右的中性状态并长期维持不变；尾矿粒度越细，经浸泡后Ni^2＋的溶出浓度越大；总体上，Ni^2＋的溶出浓度在25d时达到最高值，此后开始下降并围绕某一平均值发生震荡。
After 105 d continuous static soaking tests,the variation rule of the pH value of the soaking solutions and the ion concentration with soaking time for a molybdenum tailing is investigated. The results showed that this tailing can well neutralize the acidic solutions of pH values ranged from 3.5 to 6 to neutral state （ pH = 7 ） within 2 - 8 days and then always maintained this state. The more fine the tailing is,the more thick the Ni^2＋ ion release solution is. In general, Ni^2＋ ionic concentration reached its maximum values within 25 d, and then declined, following with oscillating around some average values.
出处
《金属矿山》
CAS
北大核心
2009年第10期148-151,共4页
Metal Mine
基金
国家自然科学基金项目(编号:50564003)
关键词
钼尾矿
静态浸泡
PH值
Ni2+离子溶出浓度
Molybdenum tailings, Static soaking, pH value, Ni^2 ＋ Ion release thickness
