Green Sand / MnO₂ Blue Bag is a high-quality filtration and water treatment media commonly used in municipal and industrial water systems. Composed of manganese dioxide-coated green sand, it effectively removes iron, manganese, and hydrogen sulfide from water through oxidation and filtration processes. The blue bag packaging ensures easy handling, storage, and transport while maintaining the media’s integrity. Its durable granules provide long service life, consistent performance, and low maintenance requirements. Ideal for drinking water purification, wastewater treatment, and industrial applications, it ensures safe, clean, and odor-free water, supporting reliable and efficient water treatment operations.
Green Sand / MnO₂ Blue Bag is a specialized industrial material commonly used in foundries and metallurgical processes. Green sand is a type of molding sand composed of naturally occurring silica sand, clay (typically bentonite), and water. Its unique properties allow it to retain moisture while remaining highly moldable, making it ideal for forming intricate casting molds. The sand is “green” not in color, but in the sense that it is used in a wet state, providing the perfect balance of strength, permeability, and collapsibility for metal casting applications.
The MnO₂ component, commonly supplied in a blue bag for easy identification and handling, refers to manganese dioxide, a chemical compound that serves as an effective oxidizing agent in foundry operations. Manganese dioxide is added to green sand to enhance the quality of metal castings. It helps prevent defects such as blowholes, sand fusion, and gas porosity in molten metal by controlling sulfur content and improving the fluidity of molten metal. This ensures superior surface finish and dimensional accuracy in the final cast product.
Packaged in durable, moisture-resistant blue bags, the product is easy to store and transport, reducing contamination risks and maintaining consistent performance. Green Sand / MnO₂ Blue Bag is widely used in industries producing ferrous and non-ferrous castings, including automotive, machinery, and decorative metal products. Its consistent composition, ease of handling, and proven performance make it a reliable choice for foundries seeking high-quality, defect-free castings.