Study On Dispersed Distribution In Continuous Phase In Steelmaking Top-blown

In most metallurgical reaction systems, the overall reaction rate between dispersed phase and continuous phase has no relationship with its chemical kinetics, but is determined by the physical condition. So in order to accelerate mass transfer, the bath is often made emulsion. In order to determine the reaction rate in this kind of system, the surface area of the dispersed phase must be obtained.Based on the similarity theory, the mixing behavior of molten slag and steel in a steelmaking converter is simulated with water model. The photos of the slag-metal interface changes are taken with a digital camera. After the photos are processed with program developed by the author, the size and coordinate distributions of dispersed phase in continuous phase are studied with probability and statistical theory.In top-blowing process a part of dispersed phase in continuous phase are small liquid drop because of turbulence. The smaller the liquid drop is, the greater is the specific interface, and the greater is thus the reaction area.The probability distribution functions of probability and statistical theory are used to describe the variation of dispersed phase distribution in this paper. The results show that the size distribution of dispersed phase in continuous phase follows the exponential function relation in top-blowing process. We can make use of this relation to describe the size distribution can be analyzed with the characteristic values of the exponential functionA dimensionless spatial distribution is determined to describe the mixing extent. The experimental relationships of the size and spatial distributions with blowing conditions are obtained.The results show that the probability and statistical theory is one of the effective means to quantitatively characterize the slag-metal mixture during blowing process.