Refractory Material Testing Services
Price On RequestProperties and Testing of Refractory Materials
Refractory materials are basically inorganic non-metallic substances which are composed of thermally stable mineral aggregates, a binder phase, and additives.
Refractory substances are supposed to be able to withstand the varying degrees of severity in terms of exposure to abrasive and corrosive solids, liquids, or gases at extremely high temperatures.
The principal raw materials used in the production of refractories are: Oxides of silicon, aluminium, magnesium, calcium and zirconium, and some non-oxide compounds of carbides, nitrides, borides, silicates and graphite.
There are a number of different types of refractory materials, in terms of physico-chemical composition and designs, which are manufactured depending upon the operating service conditions.
The General Desirable Characteristics of Refractory Materials Are as Follows:
Able to withstand high sudden change of temperatures.
Able to withstand action of molten metal slag, glass, and hot gases.
Able to withstand mechanical stress/load and abrasive environments at high temperatures.
Able to prevent or minimize loss of heat from furnaces or reaction chambers
Should have low coefficient of thermal expansion.
Should be able to maintain chemical integrity and not contaminate substances.
Uses/Applications of Refractories
Refractories are mainly used in the metallurgical industries for the purposes of providing internal linings of furnaces, kilns, reactors, boilers, and other vessels for holding and transporting metal and slag.
They are even used in non-metallurgical industries, where they are mainly used in fired heaters, hydrogen reformers, ammonia primary and secondary reformers, cracking furnaces, incinerators, utility boilers, catalytic cracking units, coke calciner, ducting, stacks, etc.
Spectro Analytical Labs Pvt. Ltd. has one of the best laboratory facilities for testing of Refractories and insulation materials.
Besides we have a team of experts who regularly visit the manufacturing sites for inspection of such materials.
Some of the important refractory items tested at Spectro are:
Refractory Bricks
Fire Bricks
Shape Bricks
Refractory Castables
Refractory Mortars
Insulating Bricks
Insulating Castables
Ceramic Blanket
Calcium Silicate Blocks
Acid Proof Bricks
Insulating Materials
Insulating materials are primarily used with the purpose of preventing heat loss or gain in the application areas, like manufacturing structures and heating chambers.
They should possess low thermal conductivity and their heat capacities depend on their bulk densities and specific heats.
They are generally porous, containing a large number of dormant air cells. Insulating materials can be classified into two broad categories:
Organic and Inorganic materials.
The organic foams include polystyrene, polyurethane, phenol foam, polyethylene foam etc.
The inorganic ones include mineral wool, calcium silicate, cellular glass, micro porous silica, magnesia, ceramic fibre, vermiculite and pearlite.