What are the uses of magnesium ore

It has applications in many industrial fields, such as producing materials such as alloys, pharmaceuticals, chemicals, etc.
Boron magnesium ore can be used to produce
Boric acid (used in the enamel and ceramic industries to increase the gloss and fastness of enamel products; used in the metallurgical industry to make various boron containing alloys; used as a buffer to maintain the pH value of nickel plating solution within a certain range; used in the pharmaceutical industry as a cleaning agent...)
Magnesium carbonate (used as an excellent filler and thickener for rubber products, it can improve the yield and quality of rubber products. It is used as an acid relieving agent in medicine, as well as a drying agent, color protection agent, cutting agent, and anti caking agent. It can also be used to manufacture advanced glass products, magnesium salts, pigments, oil paints, and daily chemicals.)
Magnesite is a general term for minerals with high magnesium content. For example, brucite is a rare high magnesium mineral, also known as "oxymagnesite". Its chemical composition is Mg (OH) 2, with a theoretical MgO content of 69% and a metallic magnesium content of 41.6%. It is a high-quality magnesium smelting ore. The periclase (mainly composed of MgO) made from calcined brucite is a high-grade refractory material.