Struggling with high-temperature calcination? We build reliable DBM production lines for you.
Dead Burnt Magnesite (DBM) is a key raw material for producing high-density, high-refractoriness magnesia, widely used in premium refractory products, steelmaking, and non-ferrous metal smelting under extreme temperatures. Its performance is highly dependent on the crystal development and structural densification achieved during the calcination process. However, in real-world production, manufacturers often face the following challenges:
Poor stability in ultra-high temperature continuous calcination
Dead burned magnesite calcination typically requires continuous calcination at extremely high temperatures of 1750–2000°C. Traditional equipment often struggles to maintain precise temperature control and long-term stable operation, leading to frequent fluctuations that hinder crystal growth.
Short refractory lining lifespan with frequent spalling and erosion
High temperatures and heavy loads cause severe thermal shock damage to the kiln lining materials. This results in frequent maintenance, disrupted production, and increased operational costs.
Insufficient crystal development leads to substandard product quality
If DBM calcination temperature is uneven or holding time is inadequate, MgO crystal size remains small and true density fails to meet required standards. This results in poor slag resistance of downstream refractory products and low customer satisfaction.
Frequent unplanned shutdowns and poor process stability
Low equipment reliability and heavy reliance on manual operation for temperature control and feeding make process parameters difficult to manage. This hinders continuous and stable production, affecting delivery timelines and overall capacity.
AGICO Dead Burnt Magnesite (DBM) Turnkey Solution — A Comprehensive and Effective Approach
We provide a systematic solution for the calcination process of dead-burned magnesite (DBM), designed for high temperature stability and operational reliability, covering the full process technical support and equipment integration from raw material entry to finished product discharge.
The core advantages of our solution include:
The high-temperature rotary kiln system designed specifically for DBM supports stable operation at >1800°C, and has a strong thermal shock-resistant lining and gradient insulation structure to ensure both lining life and thermal efficiency.
“Crystal development control model” achieves full development of MgO crystals through intelligent temperature control and thermal analysis, ensuring sintering density and true density.
Full life cycle service: from early program planning, 3D process design, equipment manufacturing, on-site installation, to later commissioning and operation, personnel training, and intelligent remote monitoring, one-stop assistance for customers to quickly and stably put into production.
The goal is clear: to stably produce high-density, high-true-density, high-performance DBM, reduce maintenance costs, increase production profits, and let customers win at the high-temperature starting point.
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Dead Burned Magnesite Calcination Plant Full-process System
AGICO’s dead-burned magnesite calcination solution combines multidisciplinary technologies such as high-temperature material engineering, heat recovery, and intelligent control to create an integrated, highly reliable full-process system.
Raw material pretreatment system
Select raw ore → crushing and screening → impurity removal → pre-homogenization treatment
Ensure the stability of feed particle size, purity and chemical composition
Provide ideal reaction conditions for subsequent calcination
High temperature DBM rotary kiln system
Core equipment, specially designed for high temperature and dense calcination
Gradient insulation structure design: The high temperature area of the kiln body adopts a multi-layer composite insulation brick + ceramic fiberboard structure to reduce heat energy loss, reduce the temperature rise of the outer wall by more than 30%, and significantly improve thermal efficiency.
Thermal shock resistant special refractory lining: The inner lining of dead burnt magnesite rotary kiln adopts MgO-Cr modified material, with optimized anchoring structure, excellent anti-corrosion and thermal shock resistance, service life ≥24 months, reducing the frequency of shutdown maintenance.
Quantitative control model for crystal growth
Key process control system determines DBM quality stability
Adopt intelligent sensor system and self-developed algorithm to monitor temperature distribution, residence time and atmosphere in the kiln in real time.
Automatically adjust firing conditions to achieve precise temperature control and dynamic adjustment.
Effectively control the sintering process to ensure that MgO crystals are fully developed, with grain size >15 μm and true density ≥3.30 g/cm³, ensuring that the material is dense and has excellent thermal stability.
Rapid cooling and finished product processing system
Rapid cooling design prevents excessive grain growth and structural damage.
Finished product crushing, screening, storage, and automatic packaging systems to improve automation and factory efficiency.
Tail gas purification and heat recovery system
High-temperature tail gas multi-stage cyclone + pulse bag dust removal system to effectively remove smoke and dust.
Combined with flue gas waste heat boiler, waste heat power generation/hot water utilization is achieved, energy utilization is improved, and overall energy consumption and carbon emissions are reduced.
Technical highlights
| Technical Highlight | Customer Benefit |
| High-Temperature Zonal Insulation Structure | Greatly improved insulation efficiency, saving 8–12% in fuel consumption; surface temperature < 65°C, enhancing operator safety and working conditions. |
| Thermal Shock Resistant Refractory Lining | Reduced risk of spalling/cracking; refractory lining lifespan increased by over 50%, significantly lowering annual maintenance downtime. |
| Crystal Development Control Model | Controlled MgO crystal growth; stable apparent porosity, true density, and CaO/SiO₂ ratio, leading to improved slag resistance and mechanical strength in downstream refractories. |
| High-Reliability System Design | Redundant main drive design and real-time bearing condition monitoring ensure 8000+ hours of continuous, failure-free operation, enhancing overall production line stability. |
AGICO Provides Full Life Cycle Services
From design to production, from operation to upgrade, AGICO is always by your side. AGICO not only provides high-quality DBM calcining equipment, but also provides a complete service system covering the entire project life cycle, ensuring that customers are efficient, secure and sustainable in every link from construction to operation.
1. Solution consultation
Customize process routes and equipment selection suggestions based on the customer’s raw ore composition and target product indicators
Output investment budget, energy consumption analysis and economic benefit evaluation report
2. Engineering design & 3D layout
Provide complete project layout diagram, process flow chart, equipment foundation diagram
Perform 3D simulation design based on on-site survey data to discover problems in advance and optimize layout efficiency and maintenance space
3. Equipment manufacturing & FAT quality inspection (Factory Acceptance Test)
Strictly implement ISO and industry standard manufacturing processes
All core equipment passes the factory pre-delivery test (FAT) to ensure that the operating accuracy and performance meet the standards
Provide third-party supervision and inspection support (such as SGS, BV, etc.) to ensure reliable quality
4. On-site installation and commissioning
Send professional engineers to the site to guide key links such as equipment installation, axis calibration, and furnace lining construction
Comprehensive commissioning: joint commissioning and testing of combustion system, transmission system, and control system
Cooperate with customers to conduct acceptance tests and hand over for use after meeting the standards
5. Remote monitoring & spare parts hosting
Through the industrial Internet of Things platform, support remote monitoring of equipment operating status, energy consumption, and key indicators
Provide operating data analysis services to assist customers in optimizing operating parameters
Support customers to establish spare parts lists, and provide hosting/quick supply mechanisms for key parts to avoid long-term downtime