铜渣—棒磨砂混合充填料的胶砂配比试验研究  

Experimental study on cement-sand ratio of copper slag-rod-mill tailings backfilling materials

作　　者：陈杰[1] 杨志强[1,2] 高谦[1] 陈得信[2] 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]金川集团股份有限公司,甘肃金昌737100

出　　处：《有色金属（矿山部分）》2015年第1期54-58,共5页NONFERROUS METALS(Mining Section）

基　　金：国家重点基础研究发展计划项目(2010CB731500)

摘　　要：水泥作为一种常用的充填胶凝材料,可以与废石、尾砂等作用生成强度较高的充填材料。水淬铜渣作为金川集团的冶炼废渣,堆积排放既污染环境又会造成矿产资源的浪费。如果铜渣可以代替棒磨砂在水泥作用下生成性能稳定的充填材料,将是实现铜渣再利用的一个经济、环保的发展方向。针对铜渣代替棒磨砂作为充填材料进行充填体力学试验,研究不同配比条件下的充填力学特性以及早强剂对充填体强度的作用。试验结果显示,掺加适量的早强剂,铜渣尾砂掺入量为15%时,充填体3d、7d抗压强度分别达到1.5MPa、2.5MPa以上,满足金川矿山充填法采矿对早期强度的要求。结合试验结果使用Matlab软件进行BP神经网络建模,对不同充填材料配比的充填体强度进行预测。预测结果显示,优化早强剂的配比,可以使铜渣的掺量提高到20%,从而进一步提高铜渣的利用率。Cement is a kind of common cement backfilling material,which can produce reliable strength backfilling body with waste rock,tailings etc.As smelting slag of Jinchuan,water quenching copper slag is piled up and discharged that will pollute the environment and cause the waste of mineral resources.If the copper slag can replace rod-mill tailings for mine filling,that generates stable performance cementations filling material,will be the development direction of an economic,environmental to achieve the reuse of copper slag.In the test,the copper slag is tested to instead of rod-mill tailings for filling materials,study on the mechanical properties of backfilling body in different mix ratio and improvement of early strength agent to backfilling body.The test results show that,when incorporation of copper slag reach 15% under the action of early strength agent,3days、7days compressive strength of the backfilling body can reach more than 1.5MPa、2.5MPa,contenting the requirement of the current mine filling.Using Matlab software to establish the BP neural network model combining with experimental results,the simulation prediction and experiment results show that,changing the ratio of early strength agent can increase the dosage of copper slag to 20%,further improve the utilization rate of copper slag.

关 键 词：水泥 铜渣 早强剂 充填体强度 神经网络预测 

分 类 号：TD862[矿业工程—金属矿开采] TD853.34[矿业工程—矿山开采]