There are significant differences between Shi Ying Shuikou brick and ordinary Shuikou brick in terms of materials, performance and application scenarios. The following are specific comparisons:

I. Material and composition

Shi Ying Shuikou Brick: The main component is silica (SiO₂), and the purity is usually above 99.2%. This high-purity Shi Ying material endows it with excellent chemical stability and corrosion resistance.

Ordinary nozzle brick: there are many kinds of materials, such as clay, high alumina, magnesium, magnesium chrome and zirconium. The properties of nozzle bricks made of different materials are quite different. For example, clay nozzle bricks have low cost, but relatively weak corrosion resistance.

II. Performance characteristics

Shi Ying Shuikou Brick:

Thermal shock resistance: Shi Ying Shuikou brick has low thermal expansion coefficient, excellent thermal shock resistance, and can withstand rapid temperature changes.

Corrosion resistance: It has strong resistance to the corrosion of acidic and alkaline slag and molten steel.

Mechanical strength: It has high cold compression strength and bending strength, and can withstand the erosion of molten steel.

Service life: Because of its high purity and excellent performance, Shi Ying Shuikou brick has a long service life.

Ordinary nozzle brick:

Clay nozzle brick: it has weak erosion resistance and is suitable for scenes with low requirements for erosion.

High alumina nozzle brick: good corrosion resistance, but high cost.

Magnesia nozzle brick: Strong corrosion resistance, but high thermal conductivity, easy to produce nodules.

Zirconium nozzle brick: it has strong corrosion resistance, but its cost is high.

III. Application scenarios

Shi Ying Shuikou Brick:

It is mainly used for submerged nozzle in continuous casting process, which can effectively prevent secondary oxidation and splashing of molten steel.

Suitable for pouring steel with high manganese content and long service life.

Ordinary nozzle brick:

Clay nozzle brick: suitable for pouring ordinary steel, but not resistant to corrosion.

High-alumina nozzle brick: suitable for scenes with high erosion requirements.

Magnesia nozzle brick: suitable for high temperature environment, but attention should be paid to the problems caused by thermal conductivity.

Zirconium nozzle brick: suitable for pouring high value-added steel, such as stainless steel.

IV. Cost and cost performance ratio

Shi Ying Shuikou Brick: Although the initial cost is high, its comprehensive cost performance is high due to its long service life and low maintenance cost.

Ordinary nozzle brick: the cost difference is great, and the clay nozzle brick has lower cost but short service life; The cost of high-alumina and zirconium nozzle bricks is higher.

V. Installation and use

Shi Ying Shuikou Brick: Pay attention to the coordination with the plug brick during installation to ensure close contact and prevent molten steel from leaking.

Ordinary nozzle brick: different materials of nozzle brick have different installation requirements, for example, magnesia nozzle brick needs higher temperature preheating.

VI. Summary

Shi Ying Shuikou brick has obvious advantages in thermal shock resistance, corrosion resistance, mechanical strength and service life, and is especially suitable for scenes with high performance requirements during continuous casting. In contrast, although there are many kinds of common nozzle bricks, they have their own advantages and disadvantages in performance and are suitable for different application scenarios.