Magnesia flux brand FMG is used to adjust the composition of the slag in order to increase the resistance of steel furnace linings. The basis of the material is pelitomorphic magnesite with a crystal size of less than 7 microns, which are firmly bonded (impregnated) with silicic acid.
Such structure of the magnesia flux structure, on the one hand, has a high reactivity to metal and slag melts, on the other hand, high strength and weather resistance of granules, which is important for flux transportation and storage.