Research Status on Optimization and Simulation of Thickener Feed well Structure
High-efficiency thickening technology has the advantages of high efficiency,less land area and good indexes,and the feedwell as the core component of thickener has a great impact on its operation.Based on this,the paper summarizes the research status of feedwell from two aspects:optimization of feedwell structure and computer simulation experiment,and puts forward the main research direction.The results showed that:① feedwell is one of the core components of thickener.A well-structured feedwell can improve the operation performance of thickener,reduce the overflow solid content,increase the un-derflow concentration and reduce the specific consumption of flocculant.② Dilution of slurry in the feedwell is conducive to flocculation,reasonable shear rate and residence time can promote flocculation,baffle structure and closed discharge are condu-cive to uniform distribution,and adjustable dilution structure is conducive to enhancing the process adaptability of the feedwell.③ CFD simulation experiment is one of the effective means to study the feeding well.Improving the model's accuracy and gradually perfecting CFD method by mutual verification of experiment and simulation can provide a strong support for the re-search of feedwell.④ The future research direction is to strengthen the flocculation in the feedwell,optimize the position of the additive,use the controllable self-dilution technology,improve the adaptability of the feedwell and use CFD method to simulate the industrial full-scale feedwell.
万方数据
维普
