Fireclay Castable Refractory Mortar for Blast furnace

September 12, 2018

Fireclay castable refractory mortar for blast furnace

The fireclay castable refractory mortar is based on hard clay clinker and is combined with soft clay or chemical binder. The castable refractory clay mortar for refractory bricks is made of a massive refractory material and should have good masonry properties and high temperature properties so that the refractory bricks can be bonded into a dense integral lining.

The performance of the fireclay castable refractory mortar refers to the refractory mortar in the masonry work to ensure the quality of the masonry, has good fluidity, plasticity, has certain water retention performance, can maintain a uniform state, does not separate sedimentation, Appropriate consistency and viscosity are suitable for masonry and will not dry up to meet the requirements of the thickness of the brick joint during the brick joint period and to make the mortar full.

The high temperature performance of the fireclay castable refractory mortar is to ensure the performance of refractory bricks at high temperatures. It has sufficient fire resistance and adhesive strength, even if it does not crack at high temperature, it has less shrinkage in a dry environment, has lower porosity and permeability, and has good air tightness.

The sintering temperature of the fireclay castable refractory mortar is also or slightly lower than the working temperature, so the mortar can be sintered under the operating conditions and bonded to the refractory brick, but should not be lowered too much, so that the refractory properties cannot meet the masonry requirements.

The fireclay castable refractory mortar is suitable for refractory brick masonry in the upper part of the blast furnace and the lower part of the hot blast stove.

 

Item

Fireclay Refractory Mortar

NN-30

NN-38

NN-42

NN—45

Al2O3 % ≥

30

38

42

45

Refractoriness ℃ ≥

1620

1680

1700

1720

 

Bending strength

MPa ≥

 

110℃*24h

1.0

1.0

1.0

1.0

1200℃*3h

3.0

3.0

3.0

3.0

 

 

 

Grain size %

<1.0mm

100

>0.5mm

≤2

<0.075mm

≥50

Setting time min

1~3

P.L.C 1200℃*3h %

-5~+1

 

Products
contact
inquiry