ARM 72 ARM 72 is an agglomerate of reactive magnesia, available in the form of briquettes or lumps that can be used by the steel industry’s demand enhancing refractory performances. PDF Composition Benefits to Consumer ARM 72 gives MgO (Soluble) to slag so that it does not snatch away MgO from the refractory lining.It also gives better coating on the refractories. Enabling Greener Steelmaking ARM 72 also supports the transition to greener steelmaking, as our process utilizes waste value addition to convert them to value-added products.ARM 72 promotes greener steelmaking –By saving energy by foaming Slag. Additional Notes Dimensions can be tailored as per customer needs.HSN Code : 2519 9090