黄金科学技术 ›› 2020, Vol. 28 ›› Issue (1): 82-89.doi: 10.11872/j.issn.1005-2518.2020.01.076
摘要:
为了研究溶浸开采过程中浸出率的预测问题,以含锑硫化矿的浸出过程为例,采用经粒子群算法优化的BP神经网络模型预测浸出率。首先分析得出影响矿物浸出率的主要因素,并将已有样本数据进行变量训练,建立BP神经网络预测模型;其次利用粒子群算法优化该模型;最后分别利用BP神经网络模型和PSO-BP神经网络模型预测浸出率,并对比2种模型预测值与实际值的误差精度。研究结果表明:影响含锑硫化矿浸出率的主要因素有温度、时间、液固比、搅拌速度和HCl浓度,且这些因素相互影响,其与浸出率呈现高度非线性关系,采用粒子群算法优化的BP神经网络模型训练精度较高,对浸出率的预测更精确,相比BP神经网络,该模型得出的预测结果与实际值的相对误差以及方差都有明显下降。由此可见,该预测模型对当前矿区溶浸开采的浸出率优化有一定的参考价值。
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