Types of refractory bricks

Meet the necessary performance of Liaoning magnesia chrome bricks, such as high temperature performance, chemical stability, thermal stability, volume stability and mechanical strength. It does not pollute the molten glass and has little effect on the quality of the molten glass. The longest possible service life. There is no contact reaction between refractory materials of different materials that are laid together under high temperature. Minimize the amount of materials and heat loss. High-quality materials are used for vulnerable parts, and general materials can be used for other parts to achieve "reasonable matching, synchronized kiln age". Converter Magnesia Carbon Brick

The loosening effect caused by the expansion when iron gunning material oxide reacts to produce spinel can also be made of magnesia-chrome bricks using synthetic co-sintered materials. In addition, there are unburned magnesia chrome bricks, for example, unburned magnesia chrome bricks combined with inorganic magnesium salt solutions. The production process of unfired magnesia chrome brick is simple, low cost, and good thermal stability, but the high temperature strength is far less than that of fired bricks. At the end of the 1950s, a so-called "direct bonding" magnesia-chrome brick was developed.

What refractory materials are good for industrial furnaces? Magnesia carbon brick manufacturers tell you. It can be selected according to the design requirements of the furnace. The furnace lining is generally divided into three layers: working layer, thermal insulation layer, and thermal insulation layer. The appropriate refractory material should be selected according to the specific purpose. The following is a brief introduction.

There are many refractory materials for industrial furnaces according to their materials, including clay, high-alumina, corundum, etc., but I won’t introduce them here. In addition to the materials, there are also construction features, such as the use of masonry refractory bricks and cast refractory pouring. Materials, plastics, ramming materials, etc. used for ramming construction, these materials can be selected according to the construction site by suitable construction methods.

What are the performance requirements of industrial furnace refractories?

Due to operating environment factors, different parts of the same furnace have different working conditions; therefore, the requirements for refractory materials are also different, and the performance of refractory products should meet the following requirements:

1. It resists the effect of high temperature heat load, and does not soften or melt in high temperature environment; high refractoriness;

2. The volume does not shrink and only expands uniformly; the material is required to have high volume stability, the residual shrinkage and residual expansion should be small, and there is no crystal transformation and serious volume effect;

3. Resistance to the combined action of high temperature thermal load and heavy load, no loss of strength, no creep and collapse; the material is required to have quite high normal temperature strength and high temperature thermal strength, high load softening temperature, high creep resistance ；

4. Resistance to rapid temperature changes or uneven heating, no cracking, no peeling; materials are required to have good thermal shock resistance;

5. Resistance to chemical corrosion of molten liquid, dust and gas, without deterioration, no corrosion; the material is required to have good slag resistance;

6. It resists the impact, impact and abrasion of flame, charge and dust, and the surface is not damaged;

7. The material is required to have high compactness and wear resistance at room temperature and high temperature;

8. Resist the influence of high-temperature vacuum operation and atmospheric changes, non-volatile and non-damage; the material is required to have low vapor pressure and high chemical stability.