煤泥水水质监测及软测量技术的应用

为了调控煤泥水系统的水质硬度,使其既有利于沉降又有利于浮选,实现煤泥水水质硬度的在线监测是基础保障.考虑到煤泥水水质硬度的在线监测技术还没有工业化应用,提出了以电导率为辅助变量的软测量技术.进行了实验室模拟水体试验和工业现场的循环煤泥水监测试验,试验结果表明,电导率与水质硬度的正线性相关性较好,线性相关系数的平方值分别为0.979 6和0.953 7.然后,建立相应水体的水质硬度和电导率关系的软测量模型,利用软测量模型对电导率数据进行处理和转换,可实现循环煤泥水系统的水质硬度的在线监测.

Quality Monitoring of Coal Slime Water and Application of Soft-Sensing Technique

In order to regulate the water hardness of coal slime water to the benefit of both settling and flotation,realization of water hardness online monitoring is a basic guarantee.Since the technique of water hardness monitoring has not been industrialized,a soft-sensing technique which uses electrical conductivity as the auxiliary variable was proposed.Laboratory simulation and industrial scene monitoring tests were performed,and the results show that there exists linear correlation between the electrical conductivity and the water hardness,and the squares of linear correlation coefficient are 0.979 6 and 0.953 7,respectively.A soft-sensing model between the water hardness and the electrical conductivity were developed,through which the data of electrical conductivity can be processed and converted so as to realize online monitoring of the hardness of coal slime water.