The main raw materials of the ladle slide gate are aluminum carbon and aluminum zirconium carbon. The need for special steel makes the development of ladle slide gates diversified. Sliding plate brick has the advantages of high fire resistance, good chemical stability, slag and liquid metal corrosion resistance, good oxidation resistance, and spalling resistance.
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The ladle slide is an essential component in the steelmaking process. It is used to control the flow of molten steel from the ladle to the tundish during continuous casting. The slide is a refractory material designed to withstand high temperatures and mechanical stress.
The ladle slide consists of upper and lower slides, a sliding mechanism and a shell. The upper and lower slides are made of high-quality refractory materials such as alumina or magnesium oxide and are designed to fit tightly to form a seal. The sliding mechanism is responsible for opening and closing the gate to allow the molten steel to flow through the ladle.
The following are the common materials for ladle slides: high aluminum slides, aluminum carbon slides, aluminum zirconium carbon slides, magnesium carbon and spinel carbon slides, and zirconia ladle slides.
Physical and chemical indicators：
| Item | Index | |||
| HBLT80 | HBLT75 | HBLT70 | ||
| Al2O3 % | ≥80 | ≥75 | ≥70 | |
| C % | ≥2 | ≥3 | ≥3 | |
| Cold Crushing Strength MPa | Non impregnation | ≥80 | ≥70 | ≥60 |
| Impregnation | ≥100 | ≥90 | ≥80 | |
| Apparent porosity % | Nonimpregnation | ≤13 | ≤13 | ≤13 |
| Impregnation | ≤10 | ≤10 | ≤10 | |
| Bulk density g/cm3 | Nonimpregnation | ≥2.9 | ≥2.85 | ≥2.75 |
| Impregnation | ≥2.95 | ≥2.9 | ≥2.85 | |
Aluminum Zirconium Carbon:
| Item | Index | ||||
| HBLTG80 | HBLTG75 | HBLTG70 | HBMLT80 | ||
| Al2O3 % | ≥80 | ≥75 | ≥70 | / | |
| Al2O3+MgO % | / | / | / | ≥80 | |
| C % | ≥3 | ≥3 | ≥4 | ≥3 | |
| ZrO2 % | ≥4 | ≥4 | ≥4 | / | |
| Apparent porosity % | Nonimpregnation | ≤13 | ≤13 | ≤13 | ≤13 |
| Impregnation | ≤10 | ≤10 | ≤10 | ≤10 | |
| Bulk density g/cm3 | Non impregnation | ≥3.0 | ≥2.95 | ≥2.9 | ≥2.75 |
| Impregnation | ≥3.05 | ≥3.0 | ≥2.95 | ≥2.8 | |
| Cold Crushing Strength MPa | Non-impregnation | ≥90 | ≥90 | ≥80 | ≥70 |
| Impregnation | ≥110 | ≥110 | ≥100 | ≥90 | |
Slide gate plates are widely used in steelmaking and continuous casting processes for controlling molten steel flow. They are primarily installed in ladles and tundishes, serving as critical components in sliding gate systems. These products are suitable for steel production, ladle metallurgy, and continuous casting operations involving billets, blooms, and slabs.
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We manufacture 3 main types of refractory materials — refractory castables, high alumina cement, and refractory bricks — covering 100+ industrial furnace types worldwide.
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