Ladle Edge Refractory Castable

Corundum artesian castable for ladle,pemanent layer,lining castable.

Corundum artesian castable:Fused corundum is taken as the main raw material,the product is used for the installation and maintenance of ladle breathable brick and water mouth block.It is characterized by good artesian performance,convenient construction,good corrosion resistance and synchronous service life with ladle lining.

The ladle permanent layer,the ladle edge castable uses special grade bauxite clinker,high purity magnesia as the main raw materi-als,its characteristic is the construction convenience,good heat preservation performance and safety performance.The service life is long and the tonnage steel consumption is low.

 

Corundum-spinel castable, commonly known as "aluminum-spinel castable". It is a new type of refractory castable for the working layer of the ladle. As the lining of the ladle, magnesium-aluminum spinel has the effect of preventing slag penetration and resisting structural peeling. The self-flowing corundum-spinel castable made of this material as the main material is used on the ladle, and its corrosion resistance is equal to or higher than that of the vibrating castable of the same material. In China, corundum-spinel castables have also achieved good results as seat bricks and iron hook castables for ironmaking.

The refractory castable for the working layer of the ladle uses spinel as a fine powder ingredient, and the castable has better resistance to slag erosion and penetration. The reasons are:

1. The fine powder of spinel can absorb a large amount of iron oxide in the slag, solidify the iron oxide, and slow down the penetration of the slag

2. Ca0 in the slag and AL203 in the fine powder form needle-shaped objects, which make the pores fine and inhibit the penetration of the slag;

3. Make the enriched SiO2 liquid phase viscous and inhibit the penetration of the slag.

In addition, modifiers are added to the castable to activate the AL203 lattice and form a solid solution with AL203, which is beneficial to the sintering of AL203 and thus improves the thermal shock resistance of the material.

There is no big difference between self-flowing castable and vibrating castable in terms of basic components. The reason why self-flowing castable can flow without external force is that the repulsion force between the micro-powder particles with different charges inside it is generated by adding deflocculating agent (suspending agent) to generate flow. Therefore, the hardening mechanism of corundum spinel self-flowing castable is consistent with that of corundum spinel castable, and it is still jointly acted by hydration bonding and coagulation bonding.

Self-flowing refractory castable is characterized by its fluidity after mixing. Castables with this fluidity can flow and degas without artificial external force. Compared with ordinary castables, it has the following characteristics:

1. Self-flowing, it can flow without vibration under the action of its own weight;

2. Self-leveling, self-leveling when there is a guide plate;

3. The surface of the construction body is flat;

4. It is pumpable;

5. The construction time is short, there is no noise, and the working conditions are good.

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