Study On Advanced Energy Conservation Technology For Fused Magnesia Smelt From Magnesite And The Crystallization Process Of Periclase

Magnesite is a kind of indispensable refractory material in metallurgical industry. With abundant resources and good quality, China is the largest fused magnesia producers and suppliers. However, the situation of domestic fused magnesia production process has been in the situation of "superior crude material, common process, and low quality of production", with serious waste of resources. Therefore, to increase the input of science and technology, develop a new generation of energy-efficiency production process on fused magnesia, and output high quality fused magnesia is imperative.There should be pyrological diagnosis made to the original technology in order to research and develop a new generation of fused magnesia production process. Through the analysis of the results of thermal measuring, we can find out the energy-saving way for fused magnesia production and bring the breakthrough for energy-saving of fused magnesia process system. On this foundation, this paper proposes new process of magnesite melting fused magnesia. The theoretical analysis on new technology and energy saving effect is also involved in this paper. At the same time, the key equipment involved in the new technology is designed and calculated in the paper.One key point of the energy saving for new generation of fused magnesia production process is the recycling of waste heat in fused magnesia lump, in the meantime, the quality guarantee of the output of the fused magnesia product is another key point.In this paper, the software named ProCAST is used to simulate the dynamic temperature field of fused magnesia lump and the solidification process of the microstructurc of pcriclasc after melting. It verifies the accuracy of simulation by comparing to the the cooling process of field test. After that, solidification process under different working conditions is simulated. The results show the key factors which influence the quality of product of the fused magnesia. It also proves the feasibility of production process for the new generation of fused magnesiaThrough the above study, and in accordance with the system energy conservation and industrial ecology system theory, the author established a set of new energy-saving technology on fused magnesia system. The new process not only ensures the material energy be made full use of, realizing "zero emission", but also guarantees the output of the higher grade fused magnesia under the condition of the lowest energy consumption. And we can finally achieve the goal of "superior crude material, high-class process and high quality production"...