Green sand with MnO₂ (manganese dioxide) in yellow bags is commonly used in foundries for molding and casting operations. The green sand, a mixture of sand, clay, water, and additives, provides excellent moldability, strength, and surface finish for metal castings. The addition of MnO₂ acts as a deoxidizer, improving the quality of ferrous and non-ferrous metal castings by reducing defects such as blowholes, pinholes, and gas porosity. Packaged in durable yellow bags for easy handling and storage, this product ensures consistency, reliability, and superior performance in industrial casting applications, making it essential for precision foundry processes.
Green Sand / MnO₂ Yellow Bag is a high-quality industrial material widely used in foundries, metallurgical processes, and chemical applications. The term “green sand” refers to a naturally moist, clay-bonded sand that retains its shape when compacted, making it an ideal medium for mold making in metal casting. It provides excellent strength, permeability, and thermal stability, ensuring precision in casting operations and reducing defects in finished metal products.
The addition of Manganese Dioxide (MnO₂) enhances the chemical and physical properties of green sand. MnO₂ acts as a strong oxidizing agent and helps control the oxidation of molten metals during the casting process. It also improves the sand’s refractoriness and durability, minimizing wear and deformation of molds under high temperatures. The yellow packaging is typically used for industrial-grade MnO₂, ensuring easy identification, safe handling, and prolonged shelf life.
This product is valued for its uniform particle size, low moisture content, and excellent binding properties. It is commonly employed in iron, steel, and non-ferrous metal casting, where precision and surface finish are critical. In addition, MnO₂-enriched green sand contributes to higher yield, reduced scrap rates, and enhanced overall efficiency in foundry operations.
Available in yellow bags for convenient storage and transportation, Green Sand / MnO₂ is a reliable choice for industries requiring high-performance molding media. Its combination of mechanical strength, chemical stability, and thermal resistance makes it indispensable in modern manufacturing and metalworking environments.