内热式炼镁工艺实验研究

Experimental Research on the Inner Thermal Magnesium Reduction Process

设计了一种新型内热式炼镁反应器，利用有限元推导了反应器内温度场分布方程，采用ANSYS软件模拟比较了传统皮江法和内热式炼镁反应器内的温度场分布规律。模拟结果表明：内热式炼镁反应器内传热速度快，内部温度梯度小，有利于加快物料还原反应速率。采用皮江法反应物料在内热式炼镁反应器内成功制备了金属镁，还原温度为1000-1200℃，真空度小于10Pa，还原时间为4h。

A new type of inner thermal magnesium smelting reactor is designed and the temperature field equa- tion is deduced by limited unit method. The temperature field distribution law is simulated and compared with Pigeon process by ANSYS. Simulation results show that the heat transfer is rapidly and the temperature gradient is a little such that the reductive velocity is accelerated. The magnesium is achieved successfully in inner thermal reactor with raw material of Pigeon process under condition that the reductive temperature is between 1000-1200℃, the vacuum value is below 10 Pa and the reductive time is 4 hours.