Basic Situation and Current Situation of Magnesium Industry

1.1.Magnesium is one of the most abundant elements in the earth’s crust, mainly distributed in dolomite, salt lake, seawater and other resources. Magnesium exists in two forms in nature: solid and liquid. Solids include magnesite, dolomite, serpentine, and the like. It contains liquid seawater, natural saline lake water and underground brine. At present, the mining of magnesium resources mainly comes from magnesite (MgCO3, the proportion of magnesium is 28.8%) and dolomite (MgCO3 CaCO3, the proportion of magnesium is 13.2%), followed by seawater brine, salt lake brine and underground brine.

1.2. The field of high-end manufacturing promotes the extensive development of the magnesium-based new material industryThe magnesium industry chain includes upstream refining, midstream casting plasticity and downstream deep processing. Upstream refining mainly includes magnesium ore separation and refining, seawater salt lake refining, etc. Primary magnesium is extracted from magnesium-containing magnesite and dolomite; midstream casting plasticity is to transform the original magnesium into a magnesium alloy, and then cast and deform the magnesium alloy to produce magnesium alloy composite profiles and castings. In the downstream industry, magnesium alloys are processed through die-casting to form a series of magnesium alloy materials that can meet the special performance requirements of the downstream.

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