Research On Analysis And Evaluation System About Performance Of Microbubble Generators

Efficiently exploiting mineral resources is the key to solve the problem of the global resources shortage. Flotation, as an effective method of separation, will play an increasingly important role in improving the mineral separation efficiency and resources comprehensive utilization rate. This paper focuses on the performance of microbubble generators, because it is the key component of the flotation equipment.This paper introduces the current development of flotation and its equipment firstly, then analyses the importance of this research. Author clarifies the main influence factors and evaluation method of sparger’s performance, by analyses primary mechanism of the bubble in fluids and the structural principle of fluid microbubble generator.After analyzing the multiphase flow dynamics, a mathematical model of three-phase flow field suiting for generator’s internal flow field is established, basing on the RNGk-ε turbulence model and homogene flow model, by revising related parameters, increasing some control equations and adding coupling conditions.Some asymmetric factors such as the gravity that only have ignorable influence on the internal flow is proved, after comparing the3D with2D simulation results of different structures. So performance analysis can use2D manner. And the reliability of the simulation analysis is proved by the experimental results from a certain extent.Author develops the performance analysis system by using C#to secondarily improve the GAMBIT and FLUENT. This system can analyze the flow of generators in multiple structures, even combination different structure and operation parameters. This system enhances the efficiency of analysis process, meanwhile can use to find more appropriate structure and better operation parameters. Large quantities of result data is high-efficient managed by using database technique. At last system can evaluate generator’s performance of a certain degree. This research is supported by the National Natural Science Funds. The research result has some practical significance in improve the performance of microbubble generator.