A refractory lining usually comprises a safety or backup layer behind the working lining in contact with the furnace contents. The whole body is encased in a metal shell. The temperature gradients in the system and the properties of all materials must be considered.

What is refractory layer?

A refractory lining usually comprises a safety or backup layer behind the working lining in contact with the furnace contents. The whole body is encased in a metal shell. The temperature gradients in the system and the properties of all materials must be considered.

What is the purpose of refractory lining?

One particular refractory product to consider is the refractory lining, which is a protective layer inside the kiln or furnace that acts as a form of insulation to withstand high temperatures. It can also protect the structure from thermal shocks, abrasion and chemical attack.

What is refractory and example?

The definition of refractory is stubborn or hard to manage, or heat resistant. An example of someone who is refractory is a person who refuses to listen to the rules. An example of something refractory is a material like silica or alumina that are difficult to melt.

What are the types of refractories?

Depending on temperatures and service conditions of the applications such as boilers, furnaces, kilns, ovens etc, different types of refractories are used.

• Fireclay refractories.
• Silica brick.
• High alumina refractories.
• Magnesite refractories.
• Chromite refractories.
• Zirconia refractories.

How many types of refractory are there?

TYPES OF REFRACTORIES  On the basis of chemical nature:  1)Acid refractories  2)Basic refractories  3)Neutral refractories  Based on fusion temperature:  Normal refractory: fusion temperature of 1580 ~ 1780 °C (e.g. Fire clay)  High refractory: fusion temperature of 1780 ~ 2000 °C (e.g. Chromite)  Super …

What are refractory properties?

Refractories are those materials which have high melting points and have properties which make them suitable to act as heat resisting barriers between high and low temperature zones.

What are the three classification of refractories?

Classification based on refractoriness These are namely (i) super-duty, (ii) high-duty, (iii) intermediate duty, and (v) low duty. Super duty refractories have PCE (pyrometric cone equivalent) value ranging from 33-38.

What are the types of refractory?

How many types of refractory are?

Refractory materials are classified into three types based on fusion temperature (melting point).

How refractories are made?

Firing involves heating the refractory material to high temperatures in a periodic (batch) or continuous tunnel kiln to form the ceramic bond that gives the product its refractory properties. The final processing stage involves milling, grinding, and sandblasting of the finished product.