Ferro Silicon Magnesium with rare earth (FeSiMgRE) is a type of nodulizer that is commonly used in casting applications. It is a ferroalloy composed of iron (Fe), silicon (Si), magnesium (Mg), and rare earth elements (RE). The exact composition of FeSiMgRE can vary depending on the specific application and manufacturer.

The addition of rare earth elements to FeSiMg can further enhance the mechanical properties of the nodular or ductile cast iron. Rare earth elements are known to improve the uniformity and roundness of the graphite nodules, resulting in even higher mechanical strength, toughness, and fatigue resistance of the cast iron.

The addition of FeSiMgRE to molten iron is similar to that of FeSiMg without rare earth. The amount of FeSiMgRE required depends on the specific application and the desired properties of the final product. It is usually added to the molten iron in the ladle, just before pouring, to ensure even distribution.

FeSiMgRE is available in various forms, including powders, granules, and briquettes, with the choice of form depending on the specific application and equipment available. It is important to handle and store FeSiMgRE properly to ensure optimal performance and safety.