The treatment of slime water not only has a direct impact on the economic benefits of the coal preparation plant, but also has an important significance for the conservation and utilization of the environment and water resources in the mining area. However, under the background of increasing mechanization level of coal mining, the proportion of fine coal is increasing, and the slime water exhibits fine, high and sticky characteristics in terms of particle size, ash, and viscosity, making it difficult for the slime water to settle. In this paper, research on the treatment of difficult-to-settle slime water by ultrasound-electrochemistry is investigated. The principle of the ultrasonic-electrochemical method for treating difficult-to-settle slime water is discussed. The effects of electrodes, electrolytes, ultrasonic energy density and ultrasonic time on treatment of difficult-to-settle slime water are analyzed. Results show that ultrasound-electrochemical pretreatment for difficult-to-settle slime water is not a simple superposition of the two treatment methods, and ultrasound can promote the electrochemical reaction. The optimal ultrasonic parameters are given: ultrasonic frequency, energy density and ultrasonic time are 29 kHz, 0.5 W/m3 and 4 min respectively. Based on the basic properties of the micro-charge on the surface of coal particles, the flocculation sedimentation can be promoted effectively by the combination of sonochemical and electrochemical methods. Finally, the research status of the new treatment technology for difficult-to-settle slime water is discussed, and the development trend is pointed out.

中文翻译：

---

超声波电化学处理难沉淀的粘液水的研究。

煤泥水的处理不仅直接影响选煤厂的经济效益，而且对矿区环境和水资源的保护与利用具有重要意义。但是，在煤矿机械化水平提高的背景下，细煤的比例不断增加，煤泥水在粒度，灰分和粘度方面表现出细，高，粘的特性，使煤泥水难以使用。定居。本文研究了超声电化学法处理难沉降的粘泥水的研究。讨论了超声电化学法处理难沉淀的粘液水的原理。电极，电解质，分析了超声能量密度和超声时间对难沉降粘泥水处理的影响。结果表明，难以沉淀的粘液水的超声电化学预处理不是两种处理方法的简单叠加，超声可以促进电化学反应。给出了最佳超声参数：超声频率，能量密度和超声时间分别为29 kHz，0.5 W / m3和4 min。基于煤颗粒表面微电荷的基本性质，声化学和电化学方法相结合可以有效地促进絮凝沉淀。最后，讨论了难沉降粘泥水处理新技术的研究现状，并指出了发展趋势。