The durability of the furnace lining directly affects production continuity and operating costs. As the core material for refractory lining, the performance differences of refractory bricks often determine the lifespan of the furnace.The core properties of magnesium chrome refractory bricks make them a primary refractory material for improving the lining of high-temperature furnaces.
1.Comparison of commonly used refractory schemes for rotary kilns and glass furnaces
Cement rotary kilns typically use magnesium chrome refractory bricks or dolomite bricks in their high-temperature zones, while glass kiln walls tend to use fused zirconia-corundum bricks. Magnesium chrome refractory bricks exhibit outstanding resistance to high-temperature erosion, especially in alkaline environments.
Ruitai Lianxin Magnesium Chrome Brick
However, magnesia-chrome refractory bricks are generally more expensive than high-alumina bricks. Therefore, some refractory brick manufacturers have developed semi-recombined products to balance costs. Customers can choose the matching material according to the specific operating conditions of the kiln.
2.Main types and core characteristics of magnesia-chrome refractory bricks
(1)Main types of magnesium chrome refractory bricks
Magnesia-chrome bricks are classified into three types according to their bonding method: direct bonding, electrofusion rebonding, and semi-rebonding.
①Directly bonded magnesia-chrome bricks are made from high-purity raw materials and fired at high temperatures, resulting in good thermal shock resistance.
②Electrofused rebonded magnesia-chrome bricks and semi-rebonded magnesia-chrome bricks have higher density due to the high-temperature smelting process. Therefore, both have stronger resistance to erosion.
Directly bonded magnesia chrome bricks
(2)Characteristics of magnesia-chrome bricks
①High bulk density;
②Good slag resistance and strong erosion resistance;
③Good volume stability at high temperatures;
④ Good thermal shock resistance.
3. How to match refractory brick suppliers
In actual procurement, the price of magnesium chrome refractory bricks is an important consideration, but by no means the only criterion. A reputable refractory brick manufacturer or factory can not only provide products with stable composition and uniform sintering, but also provide professional technical support.
Therefore, in addition to focusing on price, one should also examine the supplier’s production process, quality control system, and industry reputation. Although high-quality magnesia-chrome refractory bricks may have a higher initial investment, their longer service life can significantly reduce the frequency of furnace shutdowns for maintenance and overall operating costs, thus achieving a higher cost-performance ratio.
Magnesia-chrome fire bricks
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.
We not only supply magnesia-chrome bricks, but also high-quality refractory materials such as corundum bricks, high-alumina bricks, zirconia series bricks, insulation materials, refractory castables, and ramming mixes. Please feel free to contact us if you have any needs.
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