High Purity Caustic Calcined Magnesia: Complete 2026 Guide for Buyers

What Is Caustic Calcined Magnesia?

Caustic Calcined Magnesia is a reactive magnesia produced by low-temperature calcination of magnesite. It is also called light-burned magnesia, processed at temperatures between 700°C and 1000°C, which leaves it with high porosity and chemical reactivity that makes it suitable for a wide range of industrial uses. In practice, we find that controlled calcination is the key to consistent reactivity for end applications.

Q: What is the difference between caustic calcined magnesia and dead burned magnesia?

A: The core difference comes from calcination temperature and resulting reactivity. Caustic calcined magnesia is light burned at lower temperatures for high reactivity, while dead burned magnesia is fired at over 1500°C for low reactivity and high refractoriness. Below is a detailed comparison:

According to 2026 International Magnesia Association data, caustic calcined magnesia accounts for 38% of total global industrial magnesia consumption, with demand growing 4.2% annually.

Key Properties of High Quality Caustic Calcined Magnesia

High-quality caustic calcined magnesia requires strict control of purity, particle size and reactivity. At Jinghuang Nanomaterials, actual testing shows that batch-to-batch consistency of reactivity directly impacts end product performance for most users. Common purity grades range from 80% MgO to 95% MgO, with custom grades available for specific use cases.

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Q: Does particle size affect caustic calcined magnesia performance?

A: Yes, finer particle sizes increase the reaction rate for applications like acid neutralization and soil adjustment. From our client cases, 325 mesh is the most common general-purpose grade, while 1000+ mesh is used for specialty applications that require fast dissolution. We offer custom particle sizing from 200 mesh to 3000 mesh to meet client requirements.

Q: What impurities should buyers look for in CCM?

A: The most common harmful impurities are silica, iron oxide and calcium oxide. For industrial uses, higher impurity levels can reduce bonding strength and reactivity. Industry consensus is that impurities should be specified based on your application, and reputable suppliers will provide full testing reports for every batch.

Common Industrial Applications of CCM

Caustic calcined magnesia is used across a wide range of industries due to its high reactivity and neutralizing capacity. To help buyers select the right product, we have outlined a simple 4-step selection process:

1. Confirm your core application and required reactivity level before placing an order.
2. Specify the minimum MgO purity and maximum allowed impurity levels based on your process standards.
3. Select the appropriate particle size to match your desired reaction speed and processing method.
4. Request a free sample from your supplier to test performance in your specific end product.

Q: Is caustic calcined magnesia safe for agricultural use?

A: Yes, food-grade and agricultural-grade caustic calcined magnesia is safe for soil amendment. It helps correct acidic soil pH and supplies magnesium, a core nutrient for chlorophyll production. Recent 2026 agricultural research shows that application of 0.3-0.6 tons per hectare can increase crop yield by 8-12% in magnesium-deficient soils. We offer low-impurity agricultural-grade CCM that meets global food production safety standards.

Why Source Caustic Calcined Magnesia From Jinghuang Nanomaterials?

As a leading industrial nanomaterials manufacturer based in China, Shijiazhuang Jinghuang Technology has over 20 years of experience producing high-quality magnesia products. Our annual production capacity for caustic calcined magnesia is 120,000 metric tons, and we serve over 120 global clients across 30+ countries. 2026 client data shows a 98% reorder rate for our CCM products, thanks to our consistent quality and competitive pricing.

Q: Can you provide custom grades for special applications?

A: Yes, we work with clients to develop custom caustic calcined magnesia grades with tailored purity, particle size and reactivity to meet unique project requirements. We offer free small samples for testing before bulk orders, and provide full third-party testing reports with every shipment to ensure compliance with your specifications.

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