16 May 2022

TYPES OF REFRACTORIES

TYPES OF REFRACTORIES

Refractory:-

Refractories may be defined as materials of construction with low thermal conductivity which are capable of withstanding elevated temperature and are used to contain heat as well as solid, liquid                                            and gaseous substances in a structure. Stability at high temperature – both physical and chemical – is the primary requirement for refractory materials.

TYPES OF REFRACTORIES:- 

Refractories are classified in many ways but the most important classification is on chemical basis viz. acidic, basic and neutral.

(a) Acidic Refractories

These types of refractories are resistant to acidic conditions. Silica, fireclay, zircon and zirconia come under acidic refractories.

(b) Basic Refractories

These types of refractories are resistant to basic conditions. Magnesite, dolomite, chrome-magnesite and forsterite come under basic refractories.

(c) Neutral Refractories

High alumina, chrome, carbon, silicon carbide and mullite refractories come under neutral refractories classification.

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