绿色矿冶

In view of the current ecological environment damage caused by the accumulation of metal tailings in the Qilian Mountains of Gansu Province，through on-the-spot investigation，the representative samples of gold tailings，copper tailings and iron tailings in Jiuquan area were selected as the research objects，and its density，particle size distribution，chemical composition, mineral composition，heavy metal leaching toxicity and radioactivity were tested and analyzed. The feasibility of preparing building materials with the above tailings and the application direction in building materials were discussed. The results showed that the three kinds of tailings all showed obvious resource attributes and economic attributes, which provided reference for the resource utilization of metal tailings inthe region.