Hot air ducts with combined refractory masonry are usually constructed with standard refractory masonry, using clay or high-alumina bricks for the inner layer. Insulating bricks form the outer layer. Hot air ducts are prone to accidents such as red burning and wind channeling. Complex structures such as the hot air duct outlet, the connection of the hot blast branch and main pipes, the connection ...

What are some of the most commonly used refractory material for kiln liner?   1) Refractory bricks are made up of sintered magnesia, magnesia-carbon bricks and tapping socket bricks.   2) Unshaped refractory material includes magnesia brine, magnesia binder dry, magnesia gunning materials, tap filler and cold and heat-conductive filler. Heavy mullite Brick: 1630-1700, including mullite, ...

How to make castable refractory cement？   Castables as a Refractory Material Should be Manufactured Following the proper procedures, castables should be produced. Large materials should first be coarsely crushed before finely crushing for further screening according to particle size, followed by fine grinding of any finely crushed particles that meet particle size requirements and then finely...

What is the purpose of load softening?     Refractory materials' ability to withstand the erosion caused by hot molten slag without destroying it is known as slag resistance. The term "slag" is used to refer to the metallurgical process of slag, fly ash, fuel ash, different metal melts, furnace charges as well as various gaseous substances etc. which are in contact with refractory m...

What is refractoriness?   Refractoriness refers to the temperature at which a material does not melt or soften at high temperatures. Refractory degree is one of the important indicators to measure the heat resistance of materials. It is usually used to evaluate the heat resistance of refractory materials, ceramic materials, glass materials, etc. Test methods for refractoriness usually include...

What is an intermediate frequency furnace?   An intermediate frequency furnace (IFF) is a form of equipment often employed for metal heating and smelting applications, usually between 1kHz and 100kHz in frequency range. Here is a brief introduction to IFFs as well as requirements for using refractory materials:   Introduction of Intermediate Frequency Furnaces: An intermediate frequency ...

Refractory anhydrous stemming taphole clay Waterless Tap-hole Clay for Blast Furnace   Waterless Taphole Clay is a refractory substance commonly used to seal tapholes. It comes in two varieties - water-based and non-water-based cannon clay. Water-based cannon clay is typically utilized in smaller blast furnaces with lower top pressures and reduced levels of melting reinforcement while it...

What is unshaped refractory material?   Monolithic refractory/ Unshaped refractory is a mixture composed of a certain grade of refractory aggregates, powders, binders and admixtures in a certain proportion. It can be used directly according to the delivery state without firing or with appropriate additions. The liquid (water in most cases) is mixed evenly before use.   Refractory aggrega...