In the steel industry, magnesia-chrome bricks are widely used in high-temperature equipment such as AOD furnaces, VOD furnaces, and cement rotary kilns due to their excellent slag resistance. This article provides a reference for purchasing decisions, covering topics such as component classification, price factors, and manufacturer selection.
1.Composition and Classification of Magnesia-Chrome Bricks
Magnesia-chrome bricks are an alkaline refractory material. It is mainly made of sintered magnesia and chromium ore, and its performance grade is determined by the chromium content.
Furthermore, based on their production process, they are divided into directly bonded magnesia-chrome bricks, rebonded magnesia-chrome bricks, and semi-rebonded magnesia-chrome bricks, resulting in significant differences in performance.
magnesia chrome brick
When purchasing, the appropriate type should be matched according to the furnace type, temperature, slag basicity and other operating parameters.
At the same time, attention should be paid to the bulk density and apparent porosity of the bricks, as these parameters directly affect their service life.
2.Characteristics and Price of Magnesia-Chrome Bricks
First, it has excellent resistance to slag erosion. Especially in alkaline slag environments, its performance far surpasses that of many other refractory bricks. Secondly, magnesia-chrome refractory bricks can maintain good structural strength and volume stability at high temperatures. Furthermore, it exhibits relatively good thermal shock resistance, capable of withstanding a certain degree of temperature fluctuation.
These advantages make it an important consumable in the smelting of stainless steel.
Of course, the price of magnesia-chrome bricks is affected by multiple factors such as chromium ore grade, sintering process, and order quantity, and its unit price fluctuates relatively greatly. High-chromium models are generally more expensive than low-chromium models, but they also have a longer service life.
Semi-recombined magnesia-chrome bricks
Therefore, the overall cost-effectiveness needs to be calculated in conjunction with the furnace life.
Meanwhile, changes in market supply and demand have a direct impact on the price of magnesia-chrome fire bricks. Therefore, bulk purchases or long-term agreements often yield more favorable terms.
3.Selection of Magnesia-Chrome Brick Manufacturers
The manufacturer’s production scale determines the continuity of supply, while the ability to provide technical support affects the subsequent usage effect.
Meanwhile, certifications and industry reputation are important criteria for assessing a manufacturer’s reliability.
Therefore, it is recommended to prioritize companies that have passed ISO system certification and have long-term production experience.
magnesia chrome refractory brick
Henan Ruitai Lianxin Refractory Materials Co., Ltd. has been focusing on refractory materials for 20 years. We can not only provide customers with high-quality refractory bricks that meet the required standards, but also provide the most suitable kiln operating conditions solutions.
If you have any needs for refractory materials, please feel free to contact us. We not only supply magnesia-chrome bricks, but also magnesia-carbon bricks, magnesia-alumina bricks, high-alumina bricks, clay bricks and other high-quality refractory materials. Choosing Ruitai Lianxin is choosing strength.
