Calcined magnesium oxide is used for a variety of applications, including environmental processes, industrial operations, and agriculture.


Magnesium oxide has various applications in water/wastewater treatment, soil remediation and emissions management. As an effective base MgO offers a safe method of pH modification in comparison to other neutralizing agents such as lime or caustic soda. It can be utilized as a magnesium oxide powder, granule, or converted to magnesium hydroxide slurry for additional uses in water/wastewater treatment.

Water Treatment
Adsorption and precipitation of silica and heavy metals as an integral part of industrial water treatment systems. Helps prevent scale formation in boilers, heat exchangers, and piping.

Soil Remediation
An excellent pH modifier in contaminated soils. Effectively precipitates heavy metals as metal hydroxides, thus preventing subsequent leaching from treated soils.

Offers a safe and effective replacement to caustic soda and lime for the neutralization of acidic waste streams. Offers excellent buffering capacity to a maximum pH of 9 and prevents high pH spikes, which can adversely affect biological treatment systems.

Solids Settling
Offers an added benefit of increased solids settling and reduction of sludge volumes due to coagulation effect.

Flue Gas Desulphurization
Wet flue gas scrubbing for sulfur dioxide removal.

Mining and Mine Waste Treatment
An effective base utilized in mining extraction processes for precipitation of desired metals. Also utilized the treatment of solid and liquid mine tailings for pH neutralization and effective capture of undesired heavy metals and/or recovery of additional desired metals.


Baymag offers magnesium oxide for a wide range of industrial applications. Our products are specifically designed to meet the needs of the intended processes, maintaining consistent high-purity, controlled reactivity, and product uniformity.

Pulp and Paper
Production of magnesium bisulphite pulping liquors.

Magnesium Compounds
A source of magnesium for the production of magnesium salts such as sulfates (Epsom salts), nitrates, acetates, chlorides, etc. Also used in the production of magnesium metal and alloys.

Building Compounds & Specialty Cements
Magnesium oxide is a component in magnesia-based cements. These cements are typically used in the production of fireproof materials and coatings, wallboards, flooring and grinding wheels.

Metal Refining
Slag conditioner for protection of Mag-Carbon refractories.

Hydrometallurgy and Critical Minerals
An effective base in the precipitation of metals in various hydrometallurgical processes, including the processing of critical minerals to support emerging clean energy initiatives.

A source of magnesium in the feedstock for the production of fiberglass.


Magnesium is an essential nutrient for plant and animal life. It is a required element in plant photosynthesis and a necessary nutrient for animal health. Magnesium oxide (MgO) is the most commonly used source of magnesium for ruminant nutrition. It also offers an available source of magnesium for various fertilizer applications.

Animal Feed and Health

Plant forage and animal feeds are often deficient in the required magnesium levels for healthy animal nutrition. Magnesium deficiency can lead to a condition called grass tetany. Feed supplements and mineral premixes are commonly used to provide the necessary levels of magnesium with MgO as the most widely used source of magnesium for these applications.

MgO is also an important source of magnesium for rumen buffers and dairy supplements. It offers an available source of magnesium, which aids in increasing lactational performance.

Baymag MgO offers a high concentration of magnesium as well as excellent biological availability.

Animal Feed Blocks
MgO is commonly used as both a setting agent and source of available magnesium in the production of mineral and molasses feed blocks. Baymag MgO products provide the desired sizing and reactivity for this application as well as maintaining a high magnesium content.

Fertilizer Applications
Baymag produces several grades of MgO for direct application, or as component to various fertilizer formulations.