Classification of refractory materials

There are many varieties of refractory materials and different uses. It is necessary to scientifically classify refractory materials to facilitate scientific research, rational selection and management. There are many classification methods for refractory materials, including chemical attribute classification, chemical mineral composition classification, production process classification, and material form classification.

1. According to the level of refractoriness:

Ordinary refractory material: 1580℃～1770℃

Advanced refractory material: 1770℃～2000℃

Super grade refractory material: >2000℃

2. According to the different shapes and sizes of products:

Standard type: 230mm×114mm×65mm;

No more than 4 measuring rulers, (size ratio) Max:Min<4:1;

Special shape: no more than 2 concave corners, (size ratio) Max:Min<6:1;

Or have an acute angle of 50 to 70°;

Idiotype: (size ratio) Max:Min<8:1;

or no more than 4 concave angles; or an acute angle of 30 to 50°;

Special products: crucibles, utensils, tubes, etc.

3. According to the manufacturing method, refractory materials can be divided into:

Fired products, unfired products, unshaped refractories

4. Classification by chemical properties of materials:

Acid refractory, neutral refractory, basic refractory

5. Classification by chemical mineral composition

This classification method can directly characterize the basic composition and characteristics of various refractory materials. It is a common classification method in production, use and scientific research, and has strong practical application significance.

Silica (Silica)

Aluminosilicate

corundum

Magnesium, magnesium-calcium, aluminum-magnesium, magnesium-silicon

carbon composite refractory

Zirconium refractory

Special refractory

6. Classification of unshaped refractories (classified according to the method of use)

Castable

spray paint

ramming material

plastic

hold down material

projectile

spread

dry vibrating material

self-flowing castable

refractory mud