Types of firebrick

Meet the necessary performance of Liaoning magnesia chrome brick, such as high temperature performance, chemical stability, thermal stability, volume stability and mechanical strength. It does not pollute the glass liquid and has little influence on the quality of the glass liquid. As long as possible. There is no contact reaction between refractories of different materials built together at high temperature. Minimize material consumption and heat loss. The vulnerable parts are made of high-quality materials, and other parts can be made of general materials to achieve "reasonable matching and synchronous kiln age".

The loose effect caused by the expansion of spinel formed by oxide reaction of iron gunning material can also be used to make magnesia chrome brick. In addition, there are unburned magnesia chrome bricks, such as unburned magnesia chrome bricks combined with inorganic magnesium salt solution. The production process of unburned magnesia chrome brick is simple, low cost and good thermal stability, but its high temperature strength is far less than that of fired brick. In the late 1950s, a so-called "direct bonding" magnesia chrome brick was developed.

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

There are many refractories for industrial furnaces according to their materials, including clay, high alumina, corundum, etc., which will not be introduced too much here. In addition to the materials, there are also their construction characteristics, such as the use of masonry refractory bricks, the use of pouring refractory castables, the use of ramming construction of plastic, ramming materials, etc., these materials can be carried out according to the construction site Selected.

What are the performance requirements of refractories for industrial furnaces?

Magnesia chrome brick

Due to the operating environment factors, the working conditions of different parts of the same furnace are not consistent; therefore, the requirements for refractory materials are also different, and the performance of refractory products shall meet the following requirements:

1. Resistance to high temperature heat load, no softening and melting in high temperature environment; high fire resistance;

2. High volume stability, small residual shrinkage and residual expansion, no crystal transformation and serious volume effect are required;

3. It can resist the joint action of high temperature heat load and heavy load, without loss of strength, creep and collapse; it is required that the material should have high normal temperature strength and high temperature thermal strength, high load softening temperature and high creep resistance;

4. It can resist the influence of rapid temperature change or uneven heating without cracking and spalling;

5. It is resistant to the chemical erosion of molten liquid, dust and gas without deterioration and erosion;

6. It can resist the impact, impact and wear of flame, burden and dust, and has no surface loss;

7. It is required that the material has high compactness and wear resistance at room temperature and high temperature;

8. It is resistant to the influence of high temperature vacuum operation and atmosphere change, and it is not volatilized and damaged; it requires the material to have low vapor pressure and high chemical stability.