Custom-designed refractory launder system for controlled, high-temperature molten aluminum transfer between furnaces, filtration units, degassing equipment, and casting machines.
Longzhiyi manufactures custom refractory-lined aluminum launders tailored to the exact plant layout, equipment configuration, and operational requirements of each aluminum production line
High-Performance Refractory Lining: The internal channel features an advanced high-temperature refractory material designed to resist molten aluminum corrosion and thermal shock, ensuring extended service life.
Custom Multi-Section Configuration: Engineered to accommodate complex directional changes, such as 90-degree turns, multi-branch junctions, and multi-section drop-ins.
Heavy-Duty Steel Outer Shell: Provides exceptional mechanical strength, structural support, and protection for the inner refractory layers within demanding industrial environments.
Insulated Covered Design: Equipped with secure top covers to minimize heat loss, retain stable aluminum temperatures, and protect the molten metal from surface oxidation.
Flexible Connection Flanges: Custom-drilled bolt flanges and connection ports enable quick, secure integration with existing holding furnaces, degassing boxes, and casting tables.
Precision Dimensions: Manufactured strictly according to your engineering drawings, CAD files, or site dimensions.
Metal Outer Shell: Heavy-duty fabricated steel structure providing rugged mechanical support
Insulation Layer: High-efficiency backing insulation to drastically reduce heat dissipation
Refractory Lining: Smooth, high-density internal lining forming the direct molten aluminum contact channel
Molten Aluminum Channel: Optimized U-shape or V-shape geometry for smooth, turbulence-free metal flow
Top Covers: Insulated inspection covers designed for easy maintenance access
Flange & Connection Sections: Customized interface modules for tight sealing with plant machinery
Wide Applications in Aluminum Processing
Longzhiyi refractory launders are engineered for diverse high-temperature non-ferrous metal handling applications, including:
Aluminum melting and holding furnaces
Inline degassing and purification systems
Ceramic foam filter boxes
Vertical and horizontal direct chill (DC) casting lines
Billet and ingot casting production systems
Continuous rolling and casting equipment
Application Review: We analyze your alloy type, working temperature, and transfer capacity requirements
Layout & Dimension Confirmation: Review your CAD drawings, field sketches, photos, or video walkthroughs
Engineering Design: Our technical team generates customized structural drawings and flow path layouts
Material Selection: Optimal refractory and insulation grades are selected based on thermal requirements
Precision Fabrication: Steel shell welding, lining installation, and surface coating performed to strict tolerances
Rigorous Inspection: Comprehensive dimensional check, structural review, and quality testing prior to dispatch
Delivery & Technical Support: Secure crating and dedicated engineering assistance for seamless on-site integration
Dedicated Custom Engineering: Built for your exact layout rather than rigid standard templates
Superior Thermal Efficiency: Advanced insulation minimizes temperature drop between the furnace and caster
Durable Construction: Heavy-gauge steel and premium refractory formulas withstand harsh foundry conditions.
Direct Factory Supply: Cost-effective pricing, professional technical communication, and reliable global shipping.
We first understand your aluminum alloy, production process, equipment configuration and molten aluminum transfer requirements.
You can provide CAD drawings, equipment dimensions, installation drawings, photos or videos of the production line.
Our engineers develop the launder structure according to the required flow path, installation space and connection requirements.
The refractory and insulation structure is selected according to the operating temperature, molten aluminum application and customer's technical requirements.
The metal outer structure, refractory lining and other components are manufactured according to the approved design.
Key dimensions, connection sections, structural components and refractory lining are inspected before delivery.
Longzhiyi provides the necessary product information and technical support for installation and integration into the aluminum production line.
We manufacture aluminum launders according to the actual requirements of each aluminum plant instead of relying only on standard dimensions.
The launder structure can be configured with suitable refractory and insulation materials for molten aluminum transfer applications.
The launder can be designed to connect with existing furnaces, filtration equipment, degassing systems and casting machines.
Flow direction, dimensions, connections, covers and other structural details can be customized according to the application.
Longzhiyi provides direct manufacturing and technical communication for customized molten aluminum handling equipment.
To develop a suitable aluminum launder for your production line, please provide:
Production Line Drawing
A CAD drawing or simple layout showing the furnace, filter, casting machine and launder position.
Existing Equipment Dimensions
Connection dimensions and installation space of the related equipment.
Photos or Videos
Photos of the existing installation area help our engineers understand the actual working conditions.
Molten Aluminum Flow Requirements
Required transfer capacity and flow direction.
Operating Temperature
Typical molten aluminum temperature and operating conditions.
Connection Requirements
Inlet, outlet and connection dimensions of the upstream and downstream equipment.
No complete drawing? No problem.
You can send us photos, videos and basic dimensions for an initial engineering evaluation.
Different aluminum production lines require different molten aluminum transfer solutions.
Whether you need a straight aluminum launder, multi-section launder, refractory-lined launder, covered launder or a customized molten aluminum transfer system, Longzhiyi can manufacture the solution according to your plant layout and process requirements.
Send us your drawings, dimensions or plant photos. Our engineering team will review your requirements and develop a suitable aluminum launder solution for your production line.
What is a refractory launder used for?
A refractory launder is an insulated trough used to safely transport high-temperature molten aluminum between melting furnaces, treatment equipment, and casting machines while preventing heat loss and contamination
Can these launders be custom-built for our existing plant layout?
Yes. Longzhiyi specializes in custom manufacturing based on your exact plant dimensions, angles, length, and equipment connection requirements
What materials are used for the inner lining?
We select high-grade ceramic and precast refractory materials optimized for molten aluminum contact, offering excellent non-wetting properties and resistance to corrosion
How do we place an order if we don't have formal CAD drawings?
No problem! You can provide basic hand-drawn dimensions, site photos, or videos of your current setup, and our engineering team will evaluate and design a compatible replacement or upgrade
| Parameter category | Parameter Name | Standard Parameters | Feature |
| Product basic information | Application Scenario | High-temperature aluminum liquid transport in aluminum melting and casting workshop | Adapted to 700~800°C molten aluminum environment |
| Structure Type | Three-layer composite structure (steel shell + insulation layer + refractory lining) | Core load-bearing + thermal insulation + corrosion-resistant integrated design | |
| Shell structure parameters | Shell Material | Q235 | Ensures mechanical strength and thermal stress bearing capacity |
| Shell Thickness | 6~12mm (customized according to tank size) | Conventional 1m specification tank uses 8mm steel plate | |
| Trough Cross-section | U-shaped/trapezoidal (bottom arc transition) | Bottom arc radius 50~100mm to reduce aluminum residue | |
| Side Plate Inclination Angle | 5°~10° | Facilitates gravity flow of molten aluminum, reduces flow dead zones | |
| Segment Length | 1m/1.5m/2m standard sections, custom lengths supported | Easy to transport, assemble on-site, and install | |
| Inner lining system parameters | Lining Material | High-alumina castable/corundum/silicon nitride bonded silicon carbide | Optional materials to suit different working conditions |
| Lining Thickness | 80~150mm, 120~150mm recommended for long-distance transport (≥5m) | Choose 120~150mm for long-distance conveying (≥5m) | |
| Lining Characteristics | High temperature resistance ≤850℃, resistance to aluminum liquid erosion, non-stick to aluminum, pollution-free | Key corrosion resistance ensures aluminum purity | |
| Surface Coating | Boron nitride (BN) coating (optional) | Further enhances anti-sticking and anti-erosion performance | |
| Insulation system parameters | Insulation Layer Material | Aluminum silicate fiber board/lightweight insulating brick/nano insulation material | Energy-saving material optional |
| Insulation Layer Thickness | 50~120mm | Conventional configuration 50~80mm | |
| Aluminum Liquid Temperature Drop | ≤5℃/meter | Core thermal insulation indicator, ensures casting temperature | |
| Functional performance parameters | Conveying Capacity | 1~45 tons/hour | Customized specifications according to customer production capacity requirements |
| Installation Slope | 0.5%~1.5% | Relies on gravity flow, no additional power required | |
| Working Temperature | Aluminum liquid temperature 700~800℃, shell surface ≤80℃ | Ensures safe working environment | |
| Connection Method | Flange connection + high-temperature sealing gasket | Tight seal prevents aluminum leakage and gas absorption | |
| Optional system parameters | Trough Cover Plate | Insulated cover plate (segmented) | Standard, optional heating function |
| Heating Device | No heating/electric heating (optional) | Recommended for long-distance conveying (≥8m) | |
| Temperature Measurement Interface | Reserved thermocouple interface | Real-time monitoring of molten aluminum temperature, accuracy ±5°C | |
| Degassing/Filtration Interface | Compatible with online degassing machine and filtration box | Supports series purification unit to improve aluminum purity | |
| Diversion Mechanism | Gate-type/plug-type diversion device (optional) | Adapted to multi-nozzle casting scenarios |
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| Our engineers carry out site survey, layout matching and whole-process installation construction for aluminum launder systems, delivering reliable molten aluminum transfer solutions. | Professional on-site installation of aluminum launder for aluminum casting plants, lower heat loss, reduce sticky aluminum and slag. |
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| On-site survey & customized molten aluminum launder. Tailor-made according to your workshop layout to avoid leakage and excessive temperature loss. | Professional on-site installation service for molten aluminum launder. Precise leveling and tight joint sealing reduce temperature loss and aluminum leakage. |
