Structured Manufacturing Data (2026)

Integrated Blast Furnace and Basic Oxygen Furnace Steelmaking System

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Integrated Blast Furnace and Basic Oxygen Furnace Steelmaking System used in the Iron and Steel Basic Production sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Integrated Blast Furnace and Basic Oxygen Furnace Steelmaking System is characterized by the integration of Blast Furnace Structure and Hot Metal Torpedo Car. In industrial production environments, manufacturers listed on CNFX commonly emphasize Refractory Linings construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Coordinated ironmaking and steelmaking system converting raw materials to liquid steel.

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Product Specifications

Technical details and manufacturing context for Integrated Blast Furnace and Basic Oxygen Furnace Steelmaking System

Definition
This integrated system combines blast furnace ironmaking with basic oxygen furnace steelmaking in a continuous production flow. It transforms iron ore, coke, and limestone into molten iron via the blast furnace, then refines this hot metal into liquid steel of specified grades in the BOF. The system is engineered for high-volume production with optimized energy and material efficiency, serving as the core of primary steel plants. It represents a critical capital investment in the B2B industrial supply chain, supplying steel to downstream rolling mills and manufacturing sectors.
Working Principle
Iron ore is reduced to molten iron in a blast furnace using coke as fuel and reductant. The hot metal is then transferred to a basic oxygen furnace, where a high-purity oxygen lance oxidizes impurities (carbon, silicon, manganese) to produce liquid steel.
Common Materials
Refractory Linings, Carbon Steel Structural Plates, Copper Cooling Plates
Technical Parameters
  • Nominal liquid steel production capacity (million tonnes/year) Standard Spec
  • Temperature of molten iron tapped from blast furnace (°C) Standard Spec
Components / BOM
  • Blast Furnace Structure
    Reduces iron oxides to molten pig iron using coke and hot blast
    Material: Refractory-lined steel shell
  • Hot Metal Torpedo Car
    Transports molten iron from blast furnace to BOF shop
    Material: Refractory-lined steel vessel
  • Basic Oxygen Furnace Vessel
    Refines hot metal into steel by injecting oxygen to remove impurities
    Material: Refractory-lined steel shell with trunnion ring
  • Oxygen Lance System
    Injects high-purity oxygen into the BOF bath for decarburization
    Material: Copper tip with steel water-cooled lance body
  • Gas Cleaning Plant
    Cleans and recovers BOF process gases (CO) to prevent pollution
    Material: Steel ducting with scrubbers and electrostatic precipitators

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Integrated Blast Furnace and Basic Oxygen Furnace Steelmaking System.

BF-BOF Steel Plant Integrated Primary Steelmaking Facility Oxygen Steelmaking Plant with Blast Furnace integrated blast furnace BOF steelmaking system coordinated ironmaking steelmaking system basic oxygen furnace vessel capacity blast furnace inner volume steel production hot metal torpedo car steel plant

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Blast furnace: 2-5 bar (hot blast pressure), BOF: Atmospheric with controlled oxygen injection
flow rate: Hot metal transfer: 100-500 tonnes/hour, Oxygen injection: 20-50 Nm³/tonne steel
temperature: 1450-1700°C (blast furnace hot metal: 1400-1500°C, BOF steelmaking: 1600-1700°C)
slag handling: Basic slag with CaO/SiO₂ ratio 2.0-4.0, Slag volume: 100-150 kg/tonne hot metal
Media Compatibility
✓ Iron ore pellets/sinter ✓ Scrap steel (20-30% charge) ✓ Direct reduced iron (DRI/HBI)
Unsuitable: High phosphorus/sulfur ores without pretreatment
Sizing Data Required
  • Annual steel production capacity (tonnes/year)
  • Hot metal quality requirements (C, Si, Mn, P, S content)
  • Available raw material characteristics (ore type, coke quality, scrap availability)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Refractory Lining Degradation
Cause: Thermal cycling and chemical attack from molten iron/slag causing spalling, erosion, and structural weakening in blast furnace hearth and BOF vessels.
Gas System Leakage/Corrosion
Cause: High-temperature hydrogen attack (HTHA) and sulfur-induced corrosion in hot blast stoves, gas cleaning systems, and oxygen lances, leading to leaks and potential explosions.
Maintenance Indicators
  • Abnormal flame patterns or 'flame lifting' at burners indicating combustion instability
  • Sudden pressure drops in gas systems or unusual hissing/whistling sounds from piping/vessels
Engineering Tips
  • Implement predictive maintenance using thermographic imaging and vibration analysis on critical rotating equipment (blowers, pumps) and refractory-lined vessels to detect early failure signs.
  • Establish rigorous water treatment protocols for cooling systems to prevent scaling/corrosion, and use corrosion-resistant alloys in high-temperature gas handling components.

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ASTM A36/A36M - Standard Specification for Carbon Structural Steel EN 10025 - Hot rolled products of structural steels
Manufacturing Precision
  • Bore diameter: +/-0.05mm
  • Flatness of mounting surfaces: 0.15mm
Quality Inspection
  • Ultrasonic Testing (UT) for weld integrity
  • Chemical Composition Analysis via Optical Emission Spectrometry

Factories Producing Integrated Blast Furnace and Basic Oxygen Furnace Steelmaking System

Manufacturer profiles with relevant production capability in China

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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.

Frequently Asked Questions

What are the key components of this integrated steelmaking system?

The system includes a blast furnace structure, basic oxygen furnace vessel, gas cleaning plant, hot metal torpedo car, and oxygen lance system for complete iron-to-steel conversion.

How does this system optimize energy consumption in steel production?

The integrated design coordinates ironmaking and steelmaking processes to minimize heat loss, with system energy consumption measured in GJ/tonne of steel produced.

What materials are used in the construction of this steelmaking system?

The system utilizes refractory linings for high-temperature resistance, carbon steel structural plates for durability, and copper cooling plates for efficient heat management.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Iron and Steel Basic Production.

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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