Numerical Simulation Of Sintering Machine’ Material Layer Temperature Field And Research Of Sintering End Point

Abstract:Sintering end point’s control is very important because it can imporve the output and quality of sintering ore. The present methods of sintering end point are ambiguity, hysteresis and low accuracy, paper studied the time of iron ore’s sintering to end point under every production condition as well as quick and accurate control scheme of sintering end point after doing simulation analysis on iron ore’s sintering process, the main research contents and results are as follows:Analyzed the principle of iron ore sintering, established the numerical simulation model, did numerical simulation for iron ore sintering process using CFD, researched the time of iron ore sintering to end point and varying pattern of combustion zone’migration rate, thickness, the highest temperature. Analyzed the relationship between sintering end point and flow field parameters also established flow field parameters monitoring layout scheme.Analyzed each single parameters’influence on time of iron ore sintering to end point after numerical simulation for iron ore sintering process through changing exhauster negative pressure, material thickness, the coke ratio, equivalent diameter in the range of major change.Analyzed two sintering parameters’influence on the time of iron ore sintering to end point after numerical simulation for iron ore sintering process through changing other sintering parameters in the case of different exhauster negative pressure and material thickness.Did on-line testing experiment reasearch respectively on iron ore sintering time through changing exhauster negative pressure, material thickness and the coke ratio. Did on-line testing experiment reasearch on exhaust manifold flow distribution through changing sintering end point location. Verified accracy of numerical simulation methods through comparative analysis of the experimental results and simulation results.