Zhen an Metallurgy
High temperature fired slide
Zhenan Metallurgy provides you with hydraulic slide systems, high temperature firing slides, high performance slide gate plate, slide gate nozzles, etc. The slide and nozzle systems for tundishes and ladles provide you with a complete supply chain and solutions.
Isostatic Pressed
Long Service Life
Quick change
Custom Design
High Precision
automatic and precise control
High temperature fired slide gate
High temperature fired slide (also called high temperature sintered slide) is a refractory material used in high temperature environment. It is a refractory slide gate made by high temperature sintering process and is used in ladle or tundish slide system in steelmaking process. Its main function is to control the flow of molten steel through sliding design to ensure the stability of steelmaking and continuous casting process.
High temperature fired slide gate is usually used in steel, non-ferrous metals, glass, ceramics and other industries, with excellent high temperature resistance, corrosion resistance and wear resistance.
Refractory slide gate plate
Zhen An Metallurgy provides you with high-temperature fired slide gate and high-performance slide gate. Our refractory slide are plate-shaped products formed by sintering high-refractory raw materials (such as alumina, silicon carbide, zirconium oxide, etc.) in a high-temperature (usually 1300°C-1800°C) environment after molding.
Zhen An Metallurgy high-quality refractory slide gate have a dense structure, high mechanical strength, and a smooth surface. They are suitable for bearing mechanical friction or being used as a load-bearing platform under high temperature conditions.
refractory slide Type
We provide you with tundish slides, ladle slides, and refractory slides made of alumina-carbon, magnesium-carbon, zirconium oxide and other materials.
Refractory slide gates are widely used in the sliding gate system of tundishes and ladles and converters in steel smelting to adjust the flow of molten steel, cut off the flow of molten steel or change its flow direction.
Used at the bottom of the ladle, it has strong thermal shock resistance, high pressure resistance and resistance to molten steel scouring, and controls the flow and switch of molten steel from the ladle to the tundish.
Installed at the bottom of the tundish, it has good wear resistance and erosion resistance and can withstand long-term high-temperature use. Control the flow of molten steel from the tundish to the crystallizer.
Applied to certain special processes, such as the diversion of molten steel, the flow adjustment of porous water nozzles, etc. The design may present a porous structure or a special shape.
The most common material, with alumina as the matrix and carbon added. It has high wear resistance, good thermal shock resistance and high-temperature strength, suitable for medium and high temperature conditions.
Using magnesia as the matrix, carbon is added. It has strong erosion resistance and is suitable for high temperature and strong scouring conditions. It is mostly used in occasions with high molten steel temperature.
With zirconium oxide as the main component, it has excellent high temperature resistance and strong corrosion resistance. It is often used in the smelting process of high-purity steel and special steel grades.
refractory slide gate Plate
| Grade | ZA-SP-65 | ZA-SP-70 | ZA-SP-75 | ZA-SP-80 | ZA-SPG-70 | ZA-SPG-75 | ZA-SPG-80 |
| Al2O3 | ≥65% | ≥70% | ≥75% | ≥80% | ≥70% | ≥75% | ≥80% |
| C | ≥6% | ≥6% | ≥4% | ≥1% | ≥5% | ≥3% | ≥3% |
| ZrO2 | — | — | — | — | — | ≥4% | ≥4% |
| Compressive strength at room temperature (MPa) | ≥70 | ≥80 | ≥90 | ≥100 | ≥110 | ≥120 | ≥120 |
| Apparent porosity | ≤13% | ≤13% | ≤10% | ≤10% | ≤11% | ≤10% | ≤10% |
| Volume density (g/cm³) | ≥2.75 | ≥2.85 | ≥3.0 | ≥3.05 | ≥3.0 | ≥3.05 | ≥3.1 |
| Product | Aluminum Carbon Brick | Alumina silicon carbide carbon brick | Corundum brick | Corundum spinel carbon brick | Chrome corundum brick | Magnesium carbon brick | ||
| Grade | ZA-SP-1 | ZA-SP-2 | ZA-SP-3 | ZA-SP-4 | ZA-SP-5 | ZA-SP-6 | ZA-SP-7 | ZA-SP-8 |
| Al2O3 | ≥60% | ≥70% | ≥80% | ≥65% | ≥93% | ≥74% | ≥85% | — |
| MgO | — | — | — | — | — | ≥8% | — | ≥75% |
| C | ≥5% | ≥8% | ≥3% | ≥4% | — | ≥5% | — | ≥8% |
| Apparent porosity | ≤8% | ≤8% | ≤6% | ≤5% | — | ≤6% | — | ≤5% |
| Compressive strength at room temperature (MPa) | ≥50 | ≥70 | ≥80 | ≥65 | ≥100 | ≥60 | ≥110 | ≥40 |
| Brand | Aluminum Zirconium Carbon | Magnesium spinel | High performance Slide Plate | ||
| Index | ZA-SP-A | ZA-SP-A-R | ZA-SP-M | ZA-SP-1 | ZA-SP-2 |
| Al₂O₃ (%)≥ | 75 | 70 | 10 | 55 | 80 |
| MgO(%)≥ | 一 | 80 | 一 | ||
| C(%) ≥ | 4 | 4 | 3 | ≤6 | |
| ZrO₂ (%)≥ | 4 | 4 | 一 | 5 | 一 |
| Compressive strength C ·C ·S(MPa) ≥ | 100 | 100 | 70 | 95 | 120 |
| Apparent porosity A ·P(%) ≤ | 10 | 11 | 10 | 11 | 10 |
| Volume density B ·D(g/cm³)≥ | 3.05 | 3.05 | 2.9 | 3 | 3.05 |
| Application | Large and medium-sized slab continuous casting tundish, three-layer slide plate | Calcium treated steel, killed steel, rimmed steel and other special steels | Tundish, three-layer Slide Plate | Tundish Slide Plate | |
Intermediate ladle refractory
Ladle refractory as a whole
Converter refractory overall
Electric furnace refractory overall
Application of Hydraulic Slide Gate System
Through the deep integration of materials, machinery and intelligent technology, the refractory hydraulic slide system has become the core equipment for high-temperature metal liquid flow control in the modern metallurgical industry. Its core value lies in accurately, quickly and reliably adjusting the flow rate of molten steel, while taking into account safety and economy.
Ladle → Tundish:
Function: The slide is installed at the bottom of the ladle. By adjusting the water inlet opening, the flow rate of molten steel into the tundish is controlled to keep the tundish liquid level stable (within the fluctuation range of ±5mm).
Tundish → Crystallizer：
In some continuous casting machines, the slide replaces the traditional stopper to directly control the flow rate of molten steel from the tundish to the crystallizer, which is especially suitable for high-speed (>2m/min) production.
Slab Continuous Casting:
Precise flow control is required under large cross-section and high casting speed to prevent crystallizer liquid level fluctuation.
Our product advantages
Our hydraulic slide system drives the slide plate to slide relative to each other through the hydraulic cylinder, adjusts the opening of the slide plate orifice, accurately controls the flow of molten steel, and quickly closes the flow channel when necessary, ensuring the safety and efficiency of your production.
Mechanical design:
reakthrough in material science：
- Precise matching of double-layer slides: the gap between the upper and lower slides is <0.1mm, and the steel liquid is prevented from leaking by hydraulic or spring pressure sealing.
- Linear adjustment of opening: the flow rate and opening are approximately linear, and fine-tuning is supported (accuracy ±0.5mm).
Automation control:
- Real-time feedback system: The opening is dynamically adjusted through the crystallizer liquid level sensor and the pulling speed signal, and the liquid level fluctuation is controlled within ±3mm.
- In slab continuous casting, slide control reduces the surface defect rate of the casting by 25%.
Breakthrough in material science：
- Composite materials: such as Al₂O₃-ZrO₂-C (alumina-zirconia-carbon) system, which has both thermal shock resistance (graphite buffers thermal stress), corrosion resistance (ZrO₂ slag resistance) and high strength (Al₂O₃ matrix).
- Gradient structure design: high hardness of the surface layer (such as ZrO₂ coating), thermal shock resistance of the middle layer (Al₂O₃-C), bottom metal reinforcement (stainless steel fiber), life is increased by 30%-50%.
Extreme environment resistance:
- High temperature resistance: continuous work at 1600℃ for 8-12 hours, compressive strength>40MPa.
- Thermal shock resistance: passed more than 100 “water cooling-high temperature” cycle tests (simulating continuous casting start and stop).
Leak-proof steel design:
- Multiple seals: Metal edging + ceramic sealing pads are used between the slides, combined with hydraulic pressure to prevent high-temperature molten steel from leaking.
- Emergency shutdown function: In the event of a sudden shutdown, the slide can be completely closed within 1 second to avoid molten steel leakage accidents.
Long life and replaceability:
- Modular design: The life of a single slide can reach 8-12 furnaces. After damage, only the slide needs to be replaced instead of the entire mechanism.
- Quick replacement technology: Skilled operators can complete the replacement of the slide within 15 minutes, reducing downtime.
Cost optimization:
- Layered utilization of materials: Only expensive materials (such as ZrO₂) are used in high-wear areas to reduce overall costs.
- Embedded sensors: Real-time monitoring of slide temperature and wear, predicting the remaining life through AI models, and optimizing replacement plans.
- Digital twin technology: simulate the thermal stress distribution of the skateboard and guide design improvements (such as optimizing the opening shape).
- Low-carbon materials: develop carbon-free or low-carbon skateboards (such as MgO-CaO system) to reduce production carbon emissions.
- High-quality products: all products pass rigorous quality tests, meeting and exceeding industry standards and reducing production disruptions.
- Customised service: sizes, materials and designs are adapted to meet the specific requirements of the ladle and intermediate packages.
- Technical support: a dedicated team provides process optimisation advice to help customers improve efficiency, such as optimising flow control to reduce turbulence.
- Cost-effectiveness: Durable products with extended life cycles reduce maintenance and replacement costs and are suitable for large-scale production.
- Industry experience: We have many years of experience in steelmaking refractory manufacturing, serving customers around the world and accumulating a wealth of case studies.
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Why choose Zhen An Metallurgy as your long-term partner?
Zhenan International Group Co., Ltd. is a manufacturer and supplier of metallurgical raw materials and refractory materials, a manufacturer and wholesaler. It currently has 176 employees, of which mechanical engineers, electrical engineers, and software engineers account for about 30%.
We have more than 30 years of experience in design, manufacturing, application and maintenance in the steel industry, and have created a complete industrial chain for the steel industry, optimizing processes and improving efficiency.
We have the ability to supply you with a large number of consumable accessories such as nozzles, slides, etc. for tundishes and ladles, as well as metal silicon, ferrosilicon, and ferrovanadium required for smelting steel.
Zhen An Metallurgical’s products are exported to more than 80 countries including the UAE, Turkey, India, the United States, Germany, Slovakia, Italy, South America, the Middle East, Southeast Asia, and Asia, forming a strong core competitiveness in the steel industry.
30000(m2)
Our factory covering an area of 30,000 square meters
1500000(Ton)
Annual production and sales more than 1,500,000 tons.
Professional team to provide you with better service
Zhen An Metallurgy has a high-quality talent team integrating sales, production and R&D, including 16 senior researchers, 28 professional engineers, 35 international sales personnel, 10 senior operation personnel, and more than 300 production technicians.
Zhen An metallurgical certificate display
Our products have been exported to 78 countries, and many regular customers have visited our company and factory and placed multiple orders. After one cooperation, trust has been established with us, and customers will place orders multiple times, and some will introduce new customers to us.
