INDUSTRY COMPONENT

Cooling Water Jacket

A cooling water jacket is a critical component in blast furnace tuyere assemblies that circulates water to dissipate heat and protect tuyeres from thermal damage during ironmaking.

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Component Specifications

Definition
The cooling water jacket is an engineered enclosure surrounding the blast furnace tuyere, designed with internal channels or passages that facilitate continuous water circulation. This component serves as a heat exchanger, absorbing intense thermal energy (typically 1200-1500°C) from the hot blast and molten materials in the furnace hearth, thereby maintaining the tuyere's structural integrity and preventing premature failure. It operates under high-pressure conditions (typically 0.8-1.5 MPa) and is integral to the furnace's thermal management system.
Working Principle
The cooling water jacket operates on forced convection heat transfer principles. Cool water enters through inlet ports, flows through precisely designed internal passages surrounding the tuyere body, absorbs thermal energy from the hot surfaces, and exits as heated water through outlet ports. This continuous circulation creates a thermal barrier that maintains the tuyere metal temperature below its critical threshold (typically below 300°C), preventing thermal stress, oxidation, and deformation.
Materials
High-conductivity copper alloys (C12200 or C11000) with 99.9% purity, or specialized copper-silver alloys for enhanced thermal conductivity and corrosion resistance. Internal surfaces may have protective coatings like nickel plating to prevent scaling and erosion.
Technical Parameters
  • Design Life 2-3 years continuous operation
  • Water Flow Rate 15-25 m³/h
  • Inlet Temperature 25-35°C
  • Operating Pressure 0.8-1.5 MPa
  • Outlet Temperature 45-60°C
  • Heat Transfer Coefficient 300-500 W/m²·K
Standards
ISO 13579-4, DIN 1718, ASTM B152

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Cooling Water Jacket.

blast furnace cooling system tuyere water jacket furnace cooling components industrial heat exchangers metallurgical equipment copper cooling jackets Cooling Water Jacket Cooling Water Jacket in Basic Metal Manufacturing

Parent Products

This component is used in the following industrial products

Blast Furnace Tuyere Assembly

Critical blast furnace component for injecting hot air into the furnace hearth

View Product Details

Lance Body/Tube

The main structural component of an oxygen lance that houses and protects the oxygen delivery mechanism.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Thermal stress cracking
  • Corrosion and scaling
  • Water leakage into furnace
  • Flow blockage
  • Cavitation damage
FMEA Triads
Trigger: Mineral deposition and scaling in water passages
Failure: Reduced heat transfer efficiency leading to localized overheating
Mitigation: Implement water treatment systems, regular descaling procedures, and install flow monitoring with automatic alerts
Trigger: Erosion-corrosion from high-velocity water flow
Failure: Wall thinning and eventual leakage
Mitigation: Use erosion-resistant materials, maintain optimal flow velocities (2-3 m/s), and conduct regular thickness measurements
Trigger: Thermal fatigue from cyclic heating and cooling
Failure: Crack formation and propagation in critical areas
Mitigation: Design with gradual temperature transitions, use fatigue-resistant materials, and implement controlled heating/cooling cycles

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Dimensional tolerance ±0.5 mm on critical surfaces, flatness tolerance 0.1 mm over 100 mm, surface roughness Ra ≤ 3.2 μm for sealing surfaces
Test Method
Hydrostatic pressure testing at 1.5 times operating pressure for 30 minutes, thermal cycling tests (100 cycles from 50°C to 300°C), flow distribution testing using dye injection, and ultrasonic thickness mapping

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Related Components

Refractory Liner
Refractory liner for molten metal flow control valves, providing thermal insulation and erosion resistance in extreme temperature applications.
Rotary Impeller
A high-speed rotating impeller used in molten metal degassing systems to inject inert gases and remove impurities.
Probe Assembly
High-temperature sampling probe for molten metal composition analysis in metallurgical processes
Level Sensor
Level sensor for continuous monitoring of molten metal height in industrial furnaces and casting systems.

Frequently Asked Questions

Why are cooling water jackets typically made of copper alloys?

Copper alloys offer superior thermal conductivity (approximately 400 W/m·K), which is 8-10 times higher than steel, enabling efficient heat dissipation. They also provide good corrosion resistance against treated cooling water and can withstand the thermal cycling conditions in blast furnace operations.

What happens if the cooling water flow is interrupted?

Flow interruption causes rapid temperature increase in the tuyere assembly, potentially leading to thermal stress cracking, metal deformation, tuyere burn-through, and catastrophic failure within minutes. Modern systems include flow sensors and automatic shutdown protocols to prevent such incidents.

How often should cooling water jackets be inspected?

Visual inspections should occur weekly, with comprehensive thermal imaging and ultrasonic thickness testing conducted during scheduled furnace maintenance (typically every 6-12 months). Internal scaling and corrosion monitoring should be performed quarterly through water quality analysis.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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