Innovative application of brucite: preparation of high-purity magnesium oxide and basic magnesium sulfate cement

As a magnesium-containing mineral, brucite has become increasingly valuable in industrial applications. This article will explore how to convert brucite into high-purity magnesium oxide and basic magnesium sulfate cement through different processes. These two products show wide application potential in many fields.

Preparation method of high-purity magnesium oxide

Method 1: brucite route

Recrystallization-spray drying to obtain pure magnesium salt.

Two-stage pyrolysis and atmospheric pressure hydration.

High-temperature calcination (900°C) to obtain high-purity magnesium oxide.

Method 2: Ammonium chloride solution reaction

Double decomposition leaching to obtain magnesium chloride leachate.

Ammonia absorption and magnesium precipitation reaction to produce magnesium hydroxide.

High-temperature calcination to obtain high-purity magnesium oxide.

Preparation method of basic magnesium sulfate cement

Method 1: brucite route

Prepare active magnesium oxide.

Prepare basic magnesium sulfate.

Mix to prepare basic magnesium sulfate cement.

Method 2: brucite route

Active magnesium oxide and basic magnesium sulfate are also prepared by brucite.

Mix in proportion to obtain basic magnesium sulfate cement.

Application prospects

High-purity magnesium oxide

Applied in high-end fields such as electronic devices, catalyst carriers, and refractory materials.

Basic magnesium sulfate cement

With its corrosion resistance and early strength, it is suitable for special environments such as marine and underground engineering.

The efficient utilization of brucite can be achieved by converting it into high-purity magnesium oxide and basic magnesium sulfate cement, which are of great value in industrial applications. Continuous technological progress will optimize the preparation process, improve product quality, and reduce production costs.