金矿尾矿胶结充填试验及环境效应研究

粟著,张德明,张钦礼

Study on Cementation Filling Test and Environmental Effect of Gold Mine Tailings

Zhu SU,Deming ZHANG,Qinli ZHANG

表4 金矿尾砂及充填试块动态浸出后浸出液中的金属浓度

Table 4 The concentration of metals in the leaching solution after dynamic leaching of gold unclassified tailings and backfill samples

样本 元素质量浓度/（mg·L-1） Ni Cu Pb Cd Zn Co As 金矿全尾砂 0.04 0.5 0.01 <0.0001 0.03 0.03 0.3 7 d固化试块 0.008 0.002 0.001 <0.0001 0.002 0.001 0.01 14 d固化试块 0.004 <0.001 0.001 <0.0001 0.002 <0.0009 0.005 28 d固化试块 0.001 <0.001 <0.001 <0.0001 0.001 <0.0009 0.001 国家标准Ⅲ类标准 0.02 1.00 0.01 0.005 1.00 0.05 0.01