基于红外光学透射法的煤泥浮选入料浓度检测  

Determination of density of flotation feed pulp using infrared optical transmission method

作　　者：高鹏 

机构地区：[1]中煤科工集团唐山研究院有限公司,河北唐山063012 [2]河北省煤炭洗选工程技术研究中心,河北唐山063012

出　　处：《选煤技术》2016年第4期71-73,共3页Coal Preparation Technology

基　　金：天地科技"公司研发项目"(KJ-2014-TSKY-02)

摘　　要：煤泥浮选入料的浓度是浮选操作中的重要因素。针对传统射线浓度计使用限制,差压式浓度计检测精度不高以及选煤厂浮选过程中入料浓度检测存在的问题,提出了一种新型的光学透射检测方法。文章介绍了红外光学透射法检测装置结构、检测原理、电路设计以及标定方法,通过研究红外光线在穿透入料煤泥水介质后的剩余量与煤泥水浓度的对应关系,结合光吸收定律,计算出待测量的入料浓度。试验结果表明:经过现场标定后,该方法在检测浓度的客观性、真实性方面相比以往有了显著提高,检测精度能够满足选煤厂煤泥浮选浓度要求,且安全环保。Density of feed pulp is an important factor in flotation process. The traditional ray analytical methods fail to find widespread application for density measurement due to restriction of usage while the densimeters of the differential version generally suffer from the drawbacks of being low in measuring accuracy. For tackling the problem currently encountered in determination of flotation feed pulp density in coal preparation plant, a noval optical transmission method is proposed. The paper presents an introduction to the structure, working principle, electronics desigh of the desimeter proposed and the method for its calibration. The density of the pulp can be calculated based on the remanence of the infrared light after passing through pulp and ist relationship to corresponding slurry water density, and in line with the law of photosorption. As evidenced by test on site after calibration, the measured result is much higher in objectivity truthfulness and accuracy than before, well meeting the requirements of coal preparation plant.

关 键 词：入料浓度 红外光 光学透射 光吸收定律 

分 类 号：TD948.9[矿业工程—选矿]