Corundum Spinel Castable for the Steel Ladle Introduction
Corundum spinel castable for the sttel ladle as a kind of hot sales refractory castable for furnace application in Rongsheng refractory castable factory manufacturing with mainly used to widely used in the steel industry. Corundum spinel castable refractory for the working layer of the steel ladle have good properties of excellent thermal shock resistance and slag resistance. There are high quality refractory corundum spinel castable for sale cheap in RongSheng refractory castable company can provide refractory castable specification and category as well as competitive price & high grade quality castable refractory, other specification of refractory castable according to customer requirements, welcome to contact us or email us for free quote or price list.
Corundum Spinel Castable for the Steel Ladle Material
Corundum spinel castable refractory known as the optimal matrix system. Studies have shown that compared with corundum-based spinel-based castables with pre-synthesized spinel, refractory corundum-spinel castables produced by in-situ formation of magnesia with spinel have better slag resistance, the hydration of the fine powder of magnesia makes the rheology of the castable worse, which affects refractory corundum spinel castable construction. After the high temperature treatment or application, the corundum spinel refractory castables form three kinds of high melting mineral phases, namely calcium hexaluminate, magnesium aluminum spinel and brown corundum, which form a good combination with each other and have good performance. The addition of dolomite micropowder produces MgO and CaO and reacts with Al2O3 to form spinel and calcium aluminate minerals in situ, the two phases are evenly distributed with each other, refractory castable is expected to produce good results.
Corundum Spinel Castable for the Steel Ladle Features
1．Refractory corundum spinel castable for the steel ladle have erosion resistance.
2．Corundum spinel refractory castable for the steel ladle have good slag resistance.
3．Refractory corundum spinel castable for the steel ladle have good volume stability.
4．Corundum spinel refractory castable for the steel ladle have resistance to slag permeability.
Corundum Spinel Castable for the Steel Ladle Specification
| Item |
Corundum Spinel Castable |
| Cold Crushing Strength(Mpa) |
110℃*24h |
35 |
| 1500℃*3h |
100 |
| Modules of rupture(Mpa) |
110℃*24h |
5 |
| 1500℃*3h |
20 |
| Permanent linear change(%) |
1500℃*3h |
+-0.3 |
| Thermal Shock Resistant(%) |
1400℃*1h*7 |
5 |
| Al2o3(%) |
91.9 |
| Mgo(%) |
3.56 |
| Bulk Density |
3.08 |
Corundum Spinel Castable for the Steel Ladle Application
1.Refractory castable corundum spinel mainly used in the large ladle.
2.Refractory corundum spinel castable mainly used in the medium sized ladle.
3.Castable refractory corundum spinel mainly used in the continuous casting tundish.
4.Fireproof castable corundum spinel mainly used in the degassing tube and spray gun.
Corundum Spinel Castable of Factors Affecting the Performance
1.The fluidity of self-flowing refractory castables is greatly affected by the ratio of particle gradation and bone powder.
2.The medium coarse aggregate is too much and contacts each other to form a skeleton. If the matrix slurry is to drive the aggregate particles to flow, the friction between the aggregates must be overcome, so refractory castable corumdum spinel castable is difficult to flow. When the coarse aggregate is less and is buried in the continuous matrix slurry, the aggregate does not contact or the contact points are less and does not form a skeleton, so that the refractory castable substrate drives the aggregate particles to flow smoothly, so the corundum refractory spinel castable has a good flow.
3.The effect of the amount of magnesium oxide on the expansion rate of corundum spinel refractory castables is very obvious.
4.Reducing the fused corundum particle size can increase the linear expansion rate of the corundum spinel refractory castable for the steel ladle of the working layer.
5.When the amount of magnesium oxide added is constant, the amount of cement added is increased, the linear expansion rate of the sample is first increased and then decreased.
6.Under the condition that the amount of magnesium oxide and cement added is constant, the addition amount of the silicon fine powder is increased, the linear expansion of the refractory corundum spinel castable can be effectively suppressed.
Corundum Spinel Castable for the Steel Ladle Supplier in RS Refractory Factory
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