本文论述了示踪颗粒在含有充气的水与甘油混合物的泡沫相中的运动。试验是用一种特殊设计的实验室型浮选槽进行的。该浮选槽能够形成较厚的泡沫层。将不同粒径的荧光示踪颗粒加入到浮选柱的中部,在那里颗粒受到紫外线激发。由装有绿滤光镜的数码相机捕获颗粒的运动轨迹。将数码相机得到的图像传入计算机,用图像分析程序将颜色信号强度转变为泡沫中每一位置处的颗粒的浓度。用示踪技术来确定亲水性颗粒的分散和固体颗粒在轴向和径向的浓度变化。 This paper discusses the tracer particles’ movement in a foam phase containing a mixture of aerated water and glycerol. The test was carried out using a specially designed laboratory-type flotation cell. The flotation cell is capable of forming a thicker foam layer. Fluorescent tracer particles of different particle sizes are added to the middle of the flotation column where the particles are excited by UV light. The motion of the particles is captured by a digital camera equipped with a green filter. An image from a digital camera is sent to a computer and the image analysis program is used to convert the intensity of the color signal to the concentration of particles at each location in the foam. Tracer techniques were used to determine the dispersion of hydrophilic particles and the concentration variation of the solid particles in the axial and radial directions.