膏体填充技术在某铜矿矿山开采中的应用研究

Application of paste filling technology in mining of a copper mine

某铜矿矿体生产规模约为2900t/d矿石,日形成空区约为1024m^3,所需填充1327m^3料浆,日消耗尾砂1612t。按照上述要求设计2套填充系统,制备能力达到了120m^3/h。以全粒级尾砂作为主要充填物料,另外还设计添加相应比例的冶炼炉渣来改善物料级配,以提升充填强度。该铜矿的矿体围岩稳定性不强,遇水泥化问题突出,原来应用分级尾砂上向进路充填采矿方法,该种方法的充填成本较高,且矿石回收率低,所以希望通过建设膏体充填系统改善这种状况。本文介绍了该铜矿骨体填充系统,对不同配比条件下膏体流动特性与强度性能进行了研究,并实施了多工况下地表环管与井下上向进路膏体充填采矿方法工业试验,最后提出了结论与注意事项。

A copper ore production scale is about 2900 t/d on the formation of ore mined out area is about 1024 m to 1327 m fand fand, filling slurry, daily consumption of tailings 1612 t. According to the design requirements of 2 sets of filling system, production capacity reached 120 m fand/h. The full grain tailings are taken as the main filling materials. In addition, a corresponding proportion of smelting slag is designed to improve the gradation of the materials so as to improve the filling strength. The copper ore rock stability is not strong, in case of concrete problems, the original application to classified tailings filling mining method, filling the high cost of this method, and the recovery rate of ore is low, so I hope to improve the situation through the construction of paste filling system. This paper introduces the copper body bone filling system, under the condition of different proportions of paste flow characteristics and strength properties were studied, and the implementation under the surface and underground pipe ring upward drift paste industrial test of filling mining method, finally puts forward the conclusion and the matters needing attention.