The Collector Nozzle for Ladle Slide Gate is a key refractory component used in steelmaking ladle slide gate systems. It is installed at the upper section of the sliding gate assembly and works together with the ladle nozzle to control and guide the flow of molten steel from the ladle to the tundish.
This product is engineered with high-performance zirconia-based and alumina-based composite materials, offering excellent resistance to extreme temperatures, thermal shock, and molten steel corrosion. The structure consists of a high-density zirconia inner core and a zirconium-corundum outer body, ensuring both structural strength and flow stability during continuous casting operations.
Technical Specifications
| Items | Z-70 | Z-95-1 | Z-95-2 | Z-95-3 | Z-95-4 | W-1 | W-2 |
|---|---|---|---|---|---|---|---|
| Zr(Hf) O2 (%) ≥ | 70 | 93 | 93 | 93 | 93 | / | / |
| Al2O3 (%) ≥ | / | / | / | / | / | 75 | 80 |
| Apparent porosity (%) ≤ | 22 | 20 | 16 | 15 | 13 | 24 | 18 |
| Bulk Density (g/cm3) ≥ | 3.8 | 4.5 | 4.8 | 5.1 | 5.3 | 2.3 | 2.6 |
Key Features of Collector Nozzles
High Thermal Resistance: Can withstand operating temperatures up to 1700°C, depending on material.
Excellent Wear & Corrosion Resistance: Durable against molten steel, slag, and oxidation.
Smooth Flow Control: Optimized design ensures controlled, uniform molten steel flow.
Long Service Life: High density and superior refractory composition ensure extended durability.
Customizable Material & Size: Supports various compositions such as Alumina Carbon, Zirconium Alumina Carbon, Magnesia Carbon, Spinel Carbon, and Zirconia inserts.
Precise Casting Control: Sliding plates and tundish nozzles allow fine adjustment of pouring speed.
High Mechanical Strength: Cold Crushing Strength up to 150 MPa for upper/lower nozzle grades.
Typical Applications
- BOF (Basic Oxygen Furnace) steelmaking
- EAF (Electric Arc Furnace) ladle metallurgy
- Continuous casting systems
- Tundish flow control systems
- High-temperature non-ferrous metal casting (optional adaptation)
Production Details
Materials: Alumina Carbon, Zirconium Alumina Carbon, Magnesia Carbon, Spinel Carbon, Zirconia inserts
Grades: Upper Nozzle (LZ-70, L-70, L-75, L-85); Lower Nozzle (Al-MgO, Corundum); Tundish Nozzle (Zirconia, Alumina Sleeve)
Key Properties: High thermal stability, corrosion & oxidation resistance, bulk density 2.95–5.4 g/cm³, cold crushing strength 40–150 MPa, apparent porosity ≤23%
Dimensions: Customizable according to ladle and tundish requirements
Manufacturing Equipment: Laeis hydraulic press, Eirich mixer, Shimadzu XRF spectrometer, fully automatic refractory production line
Packing and Shipping Details
Packaging: Wooden pallet packing with protective boxes, customized as per client requirements.
Shipping: Sea freight for bulk goods; express delivery for samples.
Delivery Time: Immediate for standard stock; custom orders depend on specification.
Port of Dispatch: China
Frequently Asked Questions (FAQ)
Q1: What is the main function of the collector nozzle?
It controls and directs molten steel flow from the ladle slide gate system into the tundish or mold.
Q2: What temperature can it withstand?
Up to approximately 1700°C depending on material grade and working conditions.
Q3. Can it be customized?
Yes, sizes, material composition, and structure can be customized according to ladle system requirements.
Q4: What industries use this product?
Mainly steelmaking plants, continuous casting production lines, and metallurgical facilities.
Q5: What materials are used?
Zirconia-based composites with corundum and stabilized zircon sand.
