Refractory materials are an indispensable component of industrial high-temperature furnaces and kilns. They are able to withstand extreme temperatures and chemical erosion. This article will focus on two types of refractories: Magnesia Chrome Brick and Semi-rebonded Magnesia Chrome Brick.
1. Composition and production process:
Magnesia Chrome Brick
Main ingredients: magnesia (MgO) and chromium ore (Cr2O3), chromium ore content 5%-30%.
Production process: dry pressing or wet pressing molding, high temperature sintering.
Semi-rebonded Magnesia Chrome Brick
Additional ingredients: binders such as cement to enhance physical properties.
Production process: In addition to sintering, strength and stability are also improved through chemical bonding.
2. Performance comparison:
Magnesia Chrome Brick
Advantages: high refractoriness, good slag resistance and corrosion resistance.
Limitations: thermal stability and thermal shock resistance may be poor.
Semi-rebonded Magnesia Chrome Brick
Advantages: better thermal stability and thermal shock resistance.
Limitations: corrosion resistance and slag resistance may be slightly lower.
3. Application areas:
Magnesium-chrome bricks: suitable for high temperature environments such as steel smelting and non-ferrous metal smelting.
Semi-recombined magnesia-chrome bricks: suitable for furnace environments that withstand large temperature fluctuations.
Cost and life
Cost and life are affected by production processes and raw materials. Semi-recombined magnesia-chrome bricks may cost slightly more, but have better durability.
Selection Guide
When selecting refractory materials, the specific environment, temperature and chemical corrosion of industrial furnaces need to be considered.
Wechat Us 
