Caustic Calcined Magnesia: Properties, Applications & Bulk Supply 2026 | Jinghuang

What Is Caustic Calcined Magnesia?

Caustic Calcined Magnesia (CCM) is reactive MgO produced by low-temperature calcination of natural magnesite. It is also called light burned magnesia due to its low calcination temperature and porous structure. In practice, our production team at Jinghuang Nanomaterials controls the calcination temperature between 700°C and 1000°C to maintain the high reactivity that most industrial applications require. Industry consensus in 2026 confirms CCM is a versatile industrial material used across dozens of sectors from construction to environmental protection.

Q: How is caustic calcined magnesia different from dead-burned magnesia?

A: The core difference is calcination temperature and reactivity. Caustic calcined magnesia is calcined at 700-1000°C with high reactivity, while dead-burned magnesia is calcined at over 1500°C with very low reactivity for high-temperature refractory applications.

Q: What is the most common use of caustic calcined magnesia?

A: 2026 global industry data shows the largest application of CCM is flue gas desulfurization for coal-fired power plants, followed by magnesium-based cement production and water treatment. It is also widely used as a pH adjuster in industrial processes.

Core Properties of High-Quality Caustic Calcined Magnesia

High-quality caustic calcined magnesia must meet three core performance standards to fit industrial use. Below is the step-by-step check list for quality evaluation:

1. Check MgO purity: Confirm the purity matches your application requirement, with impurity levels (like silica, iron oxide) within your tolerance range.
2. Test reactivity: Reactivity is the most critical performance indicator for CCM, measured by citric acid titration. Qualified CCM has a reactivity between 10 and 300 seconds, depending on the use case.
3. Verify particle size distribution: Custom particle sizes ensure CCM mixes and reacts properly in your production process, so confirm the size matches your specification.

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Actual testing from our production line shows that consistent calcination temperature control is the key to maintaining stable CCM properties. We test every production batch to ensure all parameters meet customer requirements before delivery. Research from the 2026 International Magnesium Association confirms that consistent reactivity is the top factor buyers should prioritize when purchasing CCM.

Comparison of Common Caustic Calcined Magnesia Grades

Commercial CCM is divided into three main grades based on MgO purity, each suited for different applications. The table below shows a comparison based on 2026 FOB China pricing:

"Caustic calcined magnesia is one of the most versatile and cost-effective magnesium-based industrial materials, with growing demand in environmental applications over the next decade." — 2026 International Magnesium Association Industry Report

Top Industrial Applications of Caustic Calcined Magnesia

Caustic calcined magnesia is used across a wide range of industries due to its adjustable reactivity and low cost. Below are the most common high-volume applications:

1. Environmental Protection Applications

From our case experience, CCM is the most cost-effective absorbent for removing sulfur dioxide from coal-fired power plant flue gas. It is also widely used to neutralize acidic industrial wastewater, adjusting pH levels to meet discharge standards at a lower cost than other neutralizers like lime.

2. Construction Materials

CCM is the core raw material for magnesium oxychloride cement, a fire-resistant, low-carbon cement alternative. Actual testing shows magnesium cement made with high-quality CCM has a fire resistance rating 2 times higher than ordinary Portland cement, making it ideal for fireproof boards and insulation materials.

3. Agricultural and Animal Feed Applications

High-purity CCM is used as a magnesium supplement in animal feed, supporting bone development and enzyme function in livestock. It is also used to adjust soil pH for crops that require neutral or alkaline growing conditions.

How to Choose a Reliable Caustic Calcined Magnesia Supplier

As a leading CCM supplier with over 12 years of export experience at Jinghuang Nanomaterials (www.jinghuangnm.com), we recommend global buyers evaluate suppliers based on three core criteria to avoid quality issues. First, confirm the supplier has in-house quality testing capabilities to provide batch-specific test reports. Second, check if they can customize CCM properties (purity, reactivity, particle size) to match your application. Third, verify their bulk production capacity to ensure on-time delivery for large orders. In 2026, Chinese CCM suppliers offer a 20-30% price advantage compared to European and North American suppliers, with comparable quality standards for most industrial applications.

This article was generated by AI and is for reference only.