Abstract:

Magnesium desulphurization technology is a wet desulphurization process based on active magnesium oxide as raw material.It has the advantages of environmental friendliness,resource saving and high resource utilization efficiency.The technology of magnesium desulphurization in China is mature,and its resource advantages are remarkable.In addition,the by-product resources can be utilized in diversified ways.For example,the by-products,such as MgSO₄ and MgO both have a broad application prospect in various fields,especially in the construction industry and agriculture.This paper summarized the research and application of magnesium desulphurization technology in China and abroad,highlighted the technical ad-vantages,resource advantages and resource diversification advantages of magnesium desulfurization in China.The processes of preparing magnesium sulfate and magnesium oxide products by by-products were elaborated in detail,and the ways of multicomponent utilization of products were analyzed in depth.This paper mainly introduced the synthesis of magnesia cementitious material by using magnesium desulphurization byproducts as raw materials,and their application in the field of assembly architecture,which may offer new ideas for extending the application field of by-products.

Key words: magnesium desulphurization, magnesium resources, by-product diversified utilization, magnesia cementitious material