| Refractoriness (℃): | 1770< Refractoriness< 2000 |
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| Feature: | Long Time Materials |
| Type: | Refractory Material |
| Material: | Alumina Block |
| Transport Package: | Wooden Box, Standard Export Package |
| Trademark: | JI Steel |
| Samples: |
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| Customization: |
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Audited Supplier Long Working Life Alumina Carbon Submerged Entry Nozzle for Steel Casting
The submerged nozzle is a refractory casing installed at the bottom of the tundish and inserted below the liquid level of the mould in the continuous casting equipment.
The submerged nozzle plays the role of protecting the molten steel from being oxidized by the ambient air when it flows into the mould from the tundish, and also plays the role of evenly distributing the molten steel into the mould and controlling the flow state of the molten steel in the mould. The submerged nozzle is well received by users for its excellent performance such as good slag resistance, anti-clogging, long life and low accident rate.
The basic requirements for the material of the submerged nozzle are good resistance to molten steel dissolution, strong resistance to slag erosion and good thermal shock resistance. The commonly used materials are fused silica and Al2O3-C.
| Chemical and Physical Technical Data | ||
| Chemical Properties | Item | Data |
| AL2O3 | <=0.072 | |
| Fe2O3 | <=0.0045 | |
| Na2O3 | <=0.0038 | |
| K2O | <=0.0035 | |
| SiO2 | <=98 | |
| Physical Properties | Bulk Density (g/m3) | >=1.9 |
| Apparent Porosity (%) | <=12 | |
| Cold Crushing Strength (Mpa) | >=55 | |
| Cold Bending Strength (Mpa) | >=25 | |
| Thermal Conductivity (W/m.k) | 0.8 | |
| Thermal Expansivity (ºC-1) | <=0.9x100-6 | |
| Crystallinity (Vol %) | <=1 | |
| Using Temperature (ºC) | 1600 | |
Founded in 2004, JI Steel has 20 years of professional experience in the metallurgical industry and is committed to the design, production, research and development of materials in the metallurgical and steel industry, and provides a series of high-quality, innovative and cost-effective products and solutions for steel mills. The main products include copper mould tubes, graphite electrodes, refractories for steel-melting and continuous casting.
JI Steel has 3 factories, nearly 10,000 employees, and an independent scientific research and technical team of 50 people with rich experience in the metallurgical and steel-making industries. It can provide customers with customization, design, construction, installation, maintenance, replacement, and technical consultation. and other services. JI Steel has advanced CNC machining center, advanced production technology, advanced water treatment system, and strictly controls zero discharge in accordance with environmental protection requirements to build a green and environmentally friendly enterprise.
Our products are recognized by SGS, OMIC, IKA, ISQI, COTECNA and other well-known international inspection agencies, and our products are exported to Europe, Asia, Africa, South America, the Middle East and other countries, enjoying a good reputation.
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