When exposed to air, magnesium oxide readily absorbs moisture and carbon dioxide, gradually converting into basic magnesium carbonate-a process that occurs more rapidly with light-grade products than with heavy-grade ones. Under certain conditions, it reacts with water to form magnesium hydroxide; therefore, it is crucial to protect the material from water and moisture during use
Users sometimes perceive that the active magnesium oxide has deteriorated or lacks sufficient activity. Often, however, this is due to improper handling or usage practices. Let us review the correct methods for using the product.
Before using a specific grade of active magnesium oxide, it is essential to conduct small-scale tests and accurately assess its activity level. These assessments provide the basis for formulating mixtures during production and allow for necessary adjustments based on actual conditions.
After purchasing active magnesium oxide, ensure it is kept dry and protected from moisture, and prevent the packaging bags from tearing. Once a package is opened, the contents should be used up as quickly as possible; if any remains, it must be sealed promptly to avoid prolonged exposure to air. For magnesium oxide that has been stored for an extended period, inspect it for clumping or re-screen it before use. Any clumps separated during screening must be discarded and not used, as they could negatively affect the final product.
Finally, as different industries require varying levels of magnesium oxide activity, it is important to select the specific product that best suits your needs.