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| The Flow Analysis Research of the Pressure Frame Wear Problem in a Roller Mill |
1 Tianjin Cement Industry Design & Research Insistute Co., Ltd. 2 Sinoma(Tianjin) Powder Technology Ltd.
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Abstract In this paper, the armour and louvre ring of the MLS4028 vertical raw roller mill that contracted by Sinoma(TIANJIN) Powder Technology Ltd. in a technological upgrading project is built into 3D geometry model and calculation meshes, then the flow field inside the middle and down parts of MLS4028 is numerically simulated by CFD technology. The main reasons resulting in abnormal wear of pressure frame are studied according to the simulation flow field, which indicates the unreasonable louvre angle inside armour ring causes the local big eddy and high speed gas current directly blowing the pressure frame. To relieve the pressure frame wear, different louvre angle and radial position are simulated and the reasonable values of the two parameters are obtained by studying simulation results, according to which the solution scheme is designed and adopted. Finally good industrial application results proves that it is a good solution to the abnormal wear problem of the pressure frame, which provides a practical and feasible solution scheme for the alike wear problems of vertical roller mill.
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Received: 14 December 2017
Published: 29 March 2018
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