A numerical simulation method for improving the crystalline quality of fused magnesium lumps

Abstract

The present invention provides a numerical simulation method for improving the quality of fused molten magnesium lumps and relates to the technical field of quality optimization of fused magnesium products. The method comprises: establishing a macro-micro unified model that couples macro-heat transfer, micro-nucleation and growth kinetics; then using PROCAST software to carry out numerical simulation on the temperature field and microstructure in the process of cooling and solidifying the fused magnesium; carrying out visualization processing and result analysis and discussion on the lump overall temperature field change and the grain growth process; and analyzing the degree of undercooling of the influence trend on the microstructure of the fused molten magnesium lumps. According to the method provided by the present invention, mathematical and physical modeling and numerical simulation are carried out on the heat exchange and the microstructure formation process in the process of cooling and solidifying the fused magnesium lump, and through the control of parameters such as heat exchange conditions and the like, the organization formation is understood and controlled on the solidification rule, so that preparation is made for produce the high-grade periclase, the number of experiments is effectively reduced, manpower and material resources are saved, and the periclase product quality in actual production is improved.

Description

technical field [0001] The invention relates to the technical field of quality optimization of electric fused magnesium products, in particular to a numerical simulation method for improving the crystallization quality of electric fused magnesium fused lumps. Background technique [0002] Magnesium industry includes magnesia refractories, magnesia chemical materials, magnesium metal and magnesium alloys, collectively referred to as magnesia materials industry. Magnesium resources refer to magnesium-containing minerals that can be used to produce magnesia refractory materials, magnesia chemical materials, magnesium metal and other products. China is a country with large magnesium resources, with rich reserves of magnesite, dolomite, brucite and other resources, and its products are widely Used in metallurgy, building materials, chemicals, automobiles, electronics, aerospace, medicine, food, agriculture and animal husbandry and other fields. [0003] Fused magnesia, also know...

AI Technical Summary

Problems solved by technology

my country is currently the world's largest producer and supplier of fused magnesia. However, due to the backward production technology of fused magnesia in China, the traditional smelting method consumes an astonishing amount of electricity, resulting in "high energy consumption" and "high pollution" in the fused magnesia industry. ", "low-grade" status quo, which has a serious impact on the surrounding environment

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