甘油溶液的泡沫化行为

采用常温甘油溶液体系模拟高钛型高炉渣,通过系统的实验研究了黏度、表面张力和固体颗粒掺杂对泡沫化行为的影响。实验结果表明:随黏度的增加,溶液泡沫化指数先增加后减小,也即涨泡性能先增强后减弱,黏度为93.6mPa·s时达到最大。相同的气体表观速率下,泡沫高度随表面张力的减小而增加;表面张力相同时,泡沫高度随表观速率的增加而增加。表观速率一定时,泡沫高度随固体颗粒PPS含量的增加而增增加,随固体颗粒PPS粒径的减小而增大。同一表观速率下,随着滤板孔径的增大,泡沫高度显著降低。

Foaming behavior of glycerol solution

The glycerol solution system is used to simulate the high-titanium BF slag, the influences of viscosity, surface tension and solid particles on the foaming behavior were investigated by systematic experiments. The experimental results show: with the increase of the viscosity, the foaming index of solution increases at first with subsequent decrease, namely the rising bubble performance is firstly enhanced and then weakened, which the viscosity of which reaches a maximum at the viscosity of 93. 6mPa??s. Under the same superficial gas velocity, the foaming height increases with the decrease of the surface tension. With the surface tension is the same, the foam height increases with the increase of superficial gas velocity. As the gas superficial velocity is constant, foaming height increases with the increase of content of PPS and the particle size of PPS. The foaming height is significantly reduced with the increase of the pore size of filter at the same gas superficial velocity.