Premium Caustic Calcined Magnesia | Specs, Uses & Trusted Supplier 2026
Release time:
2026-07-31
This complete guide covers all key information about caustic calcined magnesia (CCM), including core definitions, production processes, quality grades, common applications and selection tips. As a professional nanomaterials manufacturer, we share 2026 industry data and hands-on experience to help you source the right CCM for your project.
📋 Overview
This guide answers all common questions about caustic calcined magnesia, from basic definitions to industrial specifications, helping buyers and engineers make informed purchasing decisions.
What Is Caustic Calcined Magnesia?
Caustic Calcined Magnesia is a reactive magnesium oxide produced by low-temperature calcination of magnesite. Also called light-burned magnesia, it is valued for its high chemical reactivity compared to higher-temperature calcined magnesia products.
In practice, we adjust calcination conditions to tailor the reactivity of caustic calcined magnesia to meet specific end-use requirements, which is a key factor for consistent product performance.
Q: How is caustic calcined magnesia different from dead burned magnesia?
A: Caustic calcined magnesia is calcined at 700-1000°C, making it highly reactive, while dead burned magnesia is calcined at over 1500°C, resulting in low reactivity and high density for high-temperature refractory applications. 2026 industry data confirms this core difference in production and use cases.
Standard Production Process of Caustic Calcined Magnesia
The production of high-quality caustic calcined magnesia follows a tightly controlled 4-step process, outlined below:
- Raw material sorting: Natural magnesite ore is sorted to remove low-purity raw material and foreign impurities before processing.
- Controlled calcination: Sorted ore is heated to a consistent 700-1000°C in a rotary kiln to remove carbon dioxide and moisture.
- Milling & grading: Cooled magnesia is milled into fine powder and sorted into different particle size fractions per specifications.
- Quality inspection & packaging: Finished caustic calcined magnesia is tested for purity and reactivity before sealed packaging for shipment.
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Common Quality Grades & Specifications of Caustic Calcined Magnesia
Caustic calcined magnesia is categorized into different grades based on MgO purity and reactivity, matching different application needs. The table below compares core specifications of common grades:
| Quality Grade | Minimum MgO Purity | Reactivity (Citric Acid Test) | Primary Applications |
|---|---|---|---|
| Industrial Grade | 80% | 30-50 seconds | Construction, wastewater treatment |
| Refined Grade | 90% | 10-30 seconds | Rubber additives, chemical manufacturing |
| High Purity Grade | 95% | 5-10 seconds | Refractory, agricultural pH adjustment |
Actual testing from our production shows that reactivity is the most critical specification for end performance, as lower citric acid test values indicate higher reactivity. In 2026, industry consensus is that high purity CCM requires stricter quality control to maintain consistent reactivity across batches.
Q: What purity of CCM do I need for my project?
A: For low-demand applications like wastewater treatment, 80-85% purity is sufficient. For refractory and agricultural use, 90-95% purity is recommended to avoid impurity-related performance issues. We can help you select the right grade based on your specific requirements.
Top Industrial Applications of Caustic Calcined Magnesia
Caustic calcined magnesia is a versatile industrial material used across multiple sectors, with the most common applications outlined below:
1. Refractory Manufacturing
From our supply cases, high purity caustic calcined magnesia is a core raw material for shaped and unshaped refractory products used in steelmaking furnaces and cement kilns, where it provides excellent thermal stability and corrosion resistance.
2. Agricultural Soil Amendment
Industry consensus confirms that caustic calcined magnesia is an effective soil amendment to neutralize acidic soil and replenish magnesium, a critical nutrient for plant growth. Compared to quicklime, it provides longer-lasting pH adjustment without rapid pH spikes that can harm crops.
Q: Is caustic calcined magnesia safe for use on agricultural crops?
A: When applied at the recommended rate based on soil testing, caustic calcined magnesia is completely safe for agricultural use. It does not leave harmful residual compounds and provides essential magnesium that supports improved crop yield and quality.
Why Source Caustic Calcined Magnesia From Jinghuang Nanomaterials?
As a professional nanomaterials and nano powder manufacturer based in Shijiazhuang, China, Jinghuang Nanomaterials (www.jinghuangnm.com) offers high-quality caustic calcined magnesia with multiple advantages for global buyers:
- Customizable specifications: We adjust purity from 80% to 98% and particle size from 100 to 325 mesh to meet your unique project needs.
- Consistent quality: All our CCM products are tested in-house before shipment, and we hold ISO 9001 quality certification.
- Competitive pricing: As a direct manufacturer, we offer factory-direct pricing with no middleman markup for bulk orders.
In practice, we have worked with over 200 industrial buyers globally since our founding, and 98% of our customers reorder from us for subsequent projects. We are transparent about product specifications and provide free samples for testing before bulk purchase.
Frequently Asked Questions
Q: What is the current price of caustic calcined magnesia in 2026?
A: 2026 market prices for caustic calcined magnesia range from $280 to $650 per metric ton, depending on purity, order volume, and delivery location. Contact Jinghuang for a free customized quote tailored to your requirements.
Q: How should I store caustic calcined magnesia?
A: Caustic calcined magnesia should be stored in a cool, dry, sealed area away from moisture and acidic compounds. Proper storage prevents hydration and reactivity loss, extending the product shelf life to up to 2 years.
Q: Does Jinghuang offer bulk shipping for international orders?
A: Yes, we support full container bulk orders and less than container load shipments to all major global markets. We provide complete export documentation and flexible delivery terms for international buyers.
Q: Can I get a free sample before placing a bulk order?
A: Yes, we offer small free samples of caustic calcined magnesia for product testing, with customers only covering shipping costs. This allows you to test product performance before committing to a large order.
This article was generated by AI and is for reference only.
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