Magnesium Chloride (MgCl₂): Manufacturing Process and Industrial Applications

Introduction
Magnesium chloride (MgCl₂) is a versatile industrial chemical widely used across multiple sectors, including environmental management, construction, agriculture, and chemical processing. As a leading magnesium chloride manufacturer, we provide high-purity, technical grade MgCl₂ suitable for demanding industrial applications.

Manufacturing Process of Magnesium Chloride

There are several common production methods for magnesium chloride, primarily involving natural brine extraction, sea water evaporation, etmineral processing:

1. Brine Evaporation Method

• Natural brines or seawater are collected and solar-evaporated in large ponds.

• Impurities are removed through sedimentation or filtration.

• Concentrated brine undergoes fractional crystallization to isolate magnesium chloride hexahydrate (MgCl₂·6H₂O).

• Final drying or flaking forms the finished technical grade magnesium chloride.

• Magnesite (MgCO₃) is treated with hydrochloric acid (HCl), producing magnesium chloride and carbon dioxide.

• After filtration and purification, magnesium chloride is crystallized or dried.

• MgCl₂ can also be recovered as a by-product from the production of potassium salts or lithium extraction processes, especially from salt lakes in regions like China or South America.

Each method aims to ensure low impurities and high MgCl₂ content, typically exceeding 46%.

Main Applications of Industrial Grade Magnesium Chloride

Magnesium chloride is prized for its hygroscopicetexothermic properties. Here are the main industrial uses:

1. De-Icing and Anti-Icing Agent

• MgCl₂ is commonly used by municipalities and transportation departments to melt ice on roads, bridges, and airport runways.

• It is less corrosive than sodium chloride and more environmentally friendly.

• Sprayed on gravel roads or construction sites to suppress dust particles.

• Helps bind loose soil and prevents erosion, especially in dry or windy regions.

• Acts as a coagulant to remove phosphates, heavy metals, and other impurities.

• Enhances sludge settling in municipal and industrial wastewater plants.

• Used in the production of Sorel cement (magnesium oxychloride cement).

• Enhances fire resistance and moisture absorption in boards and panels.

• Functions as a dyeing agent and neutralizer in the processing of fabrics and paper pulp.

• Serves as a feedstock for producing magnesium oxide (MgO), magnesium hydroxide (Mg(OH)₂), and magnesium metal.

• Occasionally used as a magnesium supplement in fertilizers or feed additives (only food or feed grade applies).

Why Choose Us as Your Magnesium Chloride Supplier?

• Consistent Quality: ≥46% MgCl₂ with low calcium and sulfate levels.

• Flexible Packaging: Available in 25kg, 50kg bags or 1MT jumbo bags with palletized options.

• OEM & Customization: Tailored labeling and shipping documents per buyer request.

• Approvisionnement mondial : Proven experience exporting to over 50 countries including the USA, Canada, Germany, Brazil, South Africa, and Australia.

• Technical Support: Free samples, COA, MSDS, and logistics support available.

Conclusion

Magnesium chloride continues to play a critical role in industrial operations due to its effectiveness, cost-efficiency, and environmental safety. Whether you need bulk MgCl₂ for de-icing, dust suppression, or wastewater treatment, partnering with a reliable magnesium chloride manufacturer ensures consistent quality and supply.

For product inquiries, specifications, or free samples, feel free to contact us directly.

TDS - Magnesium chloride.pdf

COA - Magnesium chloride flake.pdf