Structured Manufacturing Data (2026)

Oxygen Lance System

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Oxygen Lance System used in the Basic Metal Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Oxygen Lance System is characterized by the integration of Lance Body/Tube and Lance Tip/Nozzle Block. In industrial production environments, manufacturers listed on CNFX commonly emphasize Copper (for lance tip/nozzles) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A critical subsystem in basic oxygen steelmaking that delivers high-purity oxygen into the molten iron bath to oxidize impurities.

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Product Specifications

Technical details and manufacturing context for Oxygen Lance System

Definition
The Oxygen Lance System is an essential component of the Integrated Blast Furnace and Basic Oxygen Furnace Steelmaking System. It consists of a water-cooled lance that injects high-pressure, high-purity oxygen into the molten iron bath within the basic oxygen furnace (BOF). This injection facilitates the oxidation of carbon, silicon, manganese, and phosphorus impurities, enabling precise control over the steelmaking process, temperature regulation, and slag formation.
Working Principle
The system operates by lowering a water-cooled lance into the BOF vessel. High-pressure oxygen (typically 8-12 bar) is forced through nozzles at the lance tip, creating supersonic jets that penetrate the molten bath. This creates intense turbulence, promoting rapid oxidation reactions (decarburization) and efficient heat transfer. The lance's height and oxygen flow rate are precisely controlled to optimize the refining process.
Common Materials
Copper (for lance tip/nozzles), Carbon Steel (for lance body), Stainless Steel (for internal piping)
Technical Parameters
  • Lance outer diameter and nozzle bore diameter, critical for oxygen jet characteristics and penetration. (mm) Standard Spec
Components / BOM
  • Lance Body/Tube
    Main structural conduit carrying oxygen and cooling water; typically a concentric pipe assembly.
    Material: Carbon Steel
  • Lance Tip/Nozzle Block Part
    Contains precisely machined nozzles that shape and accelerate the oxygen jets into the bath.
    Material: Copper (for high thermal conductivity)
  • Cooling Water System
    Circulates water through the lance's annular space to absorb extreme heat from the furnace.
    Material: Stainless Steel (piping), Carbon Steel (headers)
  • Lance Carriage/Positioning Mechanism
    Raises, lowers, and positions the lance vertically and sometimes rotationally above the furnace.
    Material: Structural Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Oxygen Lance System.

basic oxygen furnace lance system copper tip oxygen lance steelmaking lance positioning mechanism oxygen lance cooling water system BOS lance nozzle block replacement

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 10-20 bar (operating pressure range)
flow rate: 500-1200 Nm³/min (oxygen flow capacity)
temperature: 1500-1700°C (molten iron bath temperature range)
slurry concentration: Not applicable (handles high-purity oxygen only)
Media Compatibility
✓ High-purity oxygen (>99.5% O2) ✓ Molten iron bath with carbon content 3-4% ✓ Basic refractory-lined vessels
Unsuitable: Chlorine or sulfur-containing atmospheres (causes severe corrosion)
Sizing Data Required
  • Required oxygen flow rate (Nm³/min)
  • Lance immersion depth and angle
  • Vessel capacity and desired blow time

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal fatigue cracking
Cause: Rapid thermal cycling from high-temperature oxygen injection into molten metal, causing repeated expansion/contraction stresses that exceed material endurance limits.
Erosion-corrosion
Cause: High-velocity oxygen flow combined with particulate matter in gas stream and chemical reactions with process materials, leading to accelerated material degradation at lance tip and internal surfaces.
Maintenance Indicators
  • Irregular flame pattern or backfire at lance tip during operation
  • Visible oxidation scale buildup or localized discoloration on lance exterior beyond normal operating parameters
Engineering Tips
  • Implement staged cooling protocols post-operation to minimize thermal shock, using controlled inert gas purging before full shutdown
  • Install real-time oxygen purity monitoring with automatic diversion systems to prevent particulate contamination and moisture ingress

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 - Quality Management Systems ASTM A53/A53M-20 - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless CE Marking - Directive 2014/68/EU (Pressure Equipment Directive)
Manufacturing Precision
  • Bore Diameter: +/-0.05mm
  • Wall Thickness: +/-10% of nominal thickness
Quality Inspection
  • Hydrostatic Pressure Test
  • Visual and Dimensional Inspection

Factories Producing Oxygen Lance 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.

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Frequently Asked Questions

What materials are used in oxygen lance construction and why?

Copper is used for lance tips/nozzles due to its high thermal conductivity and resistance to oxidation at high temperatures. Carbon steel forms the lance body for structural strength, while stainless steel internal piping prevents corrosion from oxygen and cooling water.

How does the oxygen lance system improve steel quality?

The system delivers precisely controlled, high-purity oxygen into the molten iron bath, oxidizing impurities like carbon, silicon, and phosphorus. This controlled oxidation process reduces impurities to specified levels, resulting in higher quality steel with consistent chemical composition.

What maintenance is required for oxygen lance systems?

Regular maintenance includes inspecting and replacing worn lance tips/nozzles, checking cooling water system integrity to prevent leaks, monitoring lance positioning mechanism accuracy, and inspecting the lance body for thermal fatigue or corrosion damage to ensure safe, efficient operation.

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 Basic Metal Manufacturing.

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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