... of assemble furnace arm, and manufacture flux II , magnesium metal 3. Magnesium chloride is an important inorganic raw material. It ... is used in the production of magnesium carbonate, magnesium hydrate and magnesia, also it is used as ... medicine. 9. Agriculture: It can be used as magnesium fertilizer, potassium magnesium fertilizer and cotton defoliants.3. Transportation. Road/Rail ...