China Nonferrous Metallurgy

Research on bubble behavior in metallurgical reactors is an important way to improve the reaction efficiency of metallurgical baths and realize high-efficiency smelting. The melt in the actual smelting process is a non-Newtonian fluid of gas, liquid, and solid three-phase flow. The bubble motion in a non-Newtonian fluid is similar to the bubble motion in a Newtonian fluid, and it will also experience the bubble generation, coalescence and rupture process, but with its own complex rheology, Newtonian fluid makes the movement of bubbles in non-Newtonian fluids different from the movement characteristics and morphological characteristics of Newtonian fluids. The influence of bubble movement on the surrounding liquid phase is also different. The current research on bubble motion under non-Newtonian fluids has many ideal hypotheses and great limitations, which are far from reality. This article describes the motion mechanism of bubble behavior and the technical application of bubble motion in non-Newtonian fluids, and introduces the current research system mechanism, status quo and future research directions.