磁化煤油-AEO9 捕收剂的性质及其浮选效果研究

Study on Properties and Flotation Performance of Magnetized Kerosene -AEO9 Collector

针对低阶难浮煤泥浮选过程中煤油消耗量大、浮选效果差等问题,用自制磁化装置,以煤油-AEO9捕收剂为研究对象,首先考察不同磁化温度、磁场强度和磁化时间对捕收剂的性质的影响,然后进行煤泥浮选实验,考察其对煤泥浮选效果的影响,最后进行磁化前后的对比实验。结果表明:磁化条件可以有效降低煤油-AEO9捕收剂的表观黏度和表面张力,且都呈先降低后升高的趋势。磁化处理后的捕收剂用于煤泥浮选的效果得到明显改善,捕收剂的较佳磁化条件为磁化温度25~30℃,磁场强度0.3 T,磁化时间6 min,浮选精煤产率、尾煤灰分和可燃体回收率分别提高了10.56%、10.36%和11.74%。

Aiming at the problems such as high consumption of kerosene and poor flotation performance in the flotation of low-order difficult floatable coal slime,kerosene-AEO9 collector was taken as the research object through self-made magnetization device.Firstly,the effect magnetization temperature,magnetic field strength and magnetization time on collector properties was investigated.Then the flotation experiment of coal slime was carried out to investigate its influence on the flotation effect.Finally the comparison experiment before and after magnetization was carried out.The results show that the apparent viscosity and surface tension of kerosene-AEO9 collector can be reduced effectively by changing the magnetization condition,and both decrease first and then increase.Magnetized collector used to dramatically improve the effect of coal slurry flotation.The optimum magnetization conditions are as follow:magnetic temperature 25℃~30℃,magnetic field intensity 0.3 T,magnetization time 6 min.Concentrate yield,ash content and combustible recovery increased by 10.56% ,10.36% and 11.74% ,respectively.