INDUSTRY COMPONENT

Bosh

A blast furnace tuyere that injects hot air into the furnace for iron smelting.

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Component Specifications

Definition
The tuyere is a critical component in a blast furnace structure, designed to inject preheated air (blast) at high velocity into the furnace through the tuyere stock. It facilitates the combustion of coke, generating the necessary heat and reducing gases (CO) for iron ore reduction. Typically located in the bosh region, it withstands extreme temperatures (up to 2000°C) and abrasive conditions, ensuring efficient oxygen supply and slag formation control.
Working Principle
Operates by channeling hot blast air (800-1300°C) from the hot blast stoves into the furnace through a nozzle. The high-velocity air promotes coke combustion, releasing heat and carbon monoxide, which reduces iron oxides to molten iron. The tuyere's design (e.g., copper construction with water cooling) manages thermal stress and prevents clogging from slag or debris.
Materials
High-conductivity copper (e.g., C11000) or copper alloys for the body, often with internal water-cooling channels; stainless steel (e.g., 316L) or refractory-lined steel for auxiliary parts; may include ceramic coatings for erosion resistance.
Technical Parameters
  • Diameter 100-200 mm
  • Service Life 6-24 months
  • Blast Pressure 2-5 bar
  • Blast Temperature 800-1300°C
  • Cooling Water Flow 10-30 m³/h
Standards
ISO 4706, DIN 17100

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bosh.

blast furnace tuyere bosh tuyere hot blast injection ironmaking component furnace air supply copper tuyere industrial smelting Bosh Bosh in Basic Metal Manufacturing

Parent Products

This component is used in the following industrial products

Blast Furnace Structure

The main structural vessel of a blast furnace where iron ore is reduced to molten pig iron through high-temperature chemical reactions.

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Engineering Analysis

Risks & Mitigation
  • Thermal fatigue leading to cracks
  • Erosion from slag and particles
  • Clogging due to debris buildup
  • Cooling system failure causing overheating
FMEA Triads
Trigger: Inadequate cooling water flow
Failure: Tuyere melting or deformation
Mitigation: Install flow sensors and alarms; use high-purity water to prevent scaling.
Trigger: Abrasive slag accumulation
Failure: Reduced airflow and efficiency
Mitigation: Regular cleaning and inspection; apply wear-resistant coatings.
Trigger: Thermal cycling stress
Failure: Crack formation and leaks
Mitigation: Design with thermal expansion allowances; use durable copper alloys.

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±2 mm on diameter, ±5°C on temperature control
Test Method
Non-destructive testing (ultrasonic), pressure testing of cooling systems, thermal imaging for heat distribution

Buyer Feedback

★★★★☆ 4.6 / 5.0 (33 reviews)

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Basic Metal Manufacturing sector, I confirm this Bosh meets all ISO standards."

"Standard OEM quality for Basic Metal Manufacturing applications. The Bosh arrived with full certification."

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Refractory liner for molten metal flow control valves, providing thermal insulation and erosion resistance in extreme temperature applications.
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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

What is the primary function of a tuyere in a blast furnace?

To inject preheated air into the furnace, enabling coke combustion and iron ore reduction by generating heat and carbon monoxide.

Why are tuyeres often made of copper?

Copper's high thermal conductivity allows efficient heat dissipation through water cooling, preventing melting and extending service life in high-temperature environments.

How often should tuyeres be replaced?

Typically every 6 to 24 months, depending on operating conditions, material quality, and maintenance practices, to avoid failures that disrupt production.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Boron Element Carbon Additive