A two dimensional mathematic model is built up to simulate the blast flow status inside shaft lime kiln.
建立了竖炉石灰窑气体流动二维数学模型，模拟出了竖炉石灰窑内气体流动状态。
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The pelletizing and lime technology based on using burning technology of the low heat value blast furnace gas and the grate-kiln process is on the leading place in China.
Through the simulation, it is found that the cause creating low activity of lime of the present shaft lime kiln lies in an unreasonable structure of the blast cap.