Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals). Magnesium is the eighth most abundant element in the Earth's crust and the fourth most common element in the Earth (after iron, oxygen and silicon), making up 13% of the planet's mass and a large fraction of the planet's mantle. It is the third most abundant element dissolved in seawater, after sodium and chlorine. Magnesium as the lightest industrial metal with unique metallurgical properties, has found wide applications in various industries. Despite the limitations in the production and use of magnesium, due to these properties, the use of this metal in various industries is increasing. Magnesium alloys are a good alternative to steel and aluminum for use in lightweight parts in the automotive and electronics industries due to their high specific strength, which has increased the demand for this metal. One of the sources of magnesium oxide production is dolomite ore. Dolomite is calcined by a thermal process and then magnesium oxide is extracted after leaching. The purpose of this research is to extract magnesium oxide and then to produce magnesium ingots. For this purpose, dolomites from Lamerd region were sampled and now with a budget of 160000 dollars, the preliminary and semi-industrial phase of magnesium oxide production has been successfully completed by the company's experts.