Editorial Technical Reference

Blast Furnace Gas Burner Nozzle

This page explains how Blast Furnace Gas Burner Nozzle is classified within Iron and Steel Basic Production. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

High-temperature nozzle for injecting and atomizing blast furnace gas in steelmaking furnaces

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Product Specifications

Technical details and manufacturing context for Blast Furnace Gas Burner Nozzle

Definition

The Blast Furnace Gas Burner Nozzle is a precision-engineered component used in iron and steel production to inject blast furnace gas into steelmaking furnaces. It is designed to atomize the fuel gas and mix it with combustion air, ensuring efficient and stable combustion. The nozzle is constructed from high-chromium stainless steel or ceramic-lined alloy, enabling it to withstand extreme temperatures and corrosive environments. Key parameters include an orifice diameter of 2–8 mm, a maximum operating temperature of 1200 °C, a flow capacity of 50–500 Nm³/h, and a spray angle of 30–90 degrees. The connection thread size ranges from G1/2 to G2 per ISO 228-1, and the pressure rating is PN16–PN40 per ISO 7268. The material grade is 310S stainless steel per ASTM A240, with a surface finish of Ra 0.8–1.6 µm per ISO 1302 and hardness of HRC 35–45 per ASTM E18. The operating pressure is 0.5–1.6 MPa, and the gas purity should be at least 95%. The weight varies from 1.5 to 8.5 kg depending on size and material. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The nozzle is critical for maintaining stable furnace temperatures and reducing fuel consumption, but its performance depends on proper selection, installation, and maintenance.

Working Principle

The nozzle accelerates and directs blast furnace gas through a precisely shaped orifice, creating controlled turbulence and atomization. When mixed with oxygen, the atomized gas achieves efficient combustion. The design ensures consistent flow patterns, even under high temperatures and corrosive conditions, contributing to stable furnace operation.

Common Materials

High-Chromium Stainless Steel, Ceramic-Lined Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Orifice DiameterRequired	2–8 mm	Precision diameter of gas flow opening
Maximum Operating TemperatureRequired	1200 °C	Maximum sustained temperature rating
Flow CapacityRequired	50–500 Nm³/h	Maximum blast furnace gas flow rate
Spray AngleRequired	30–90 degrees	Angle of gas dispersion pattern
Connection Thread SizeRequired	G1/2–G2 inches	Standard pipe thread for burner assembly mountingISO 228-1
Pressure Rating	PN16–PN40 bar	Maximum operating pressureISO 7268
Material	310S	High-temperature stainless steelASTM A240
Weight	1.5–8.5 kg	Depends on size and material
Surface Finish	Ra 0.8–1.6 µm	Critical for sealing surfacesISO 1302
Hardness	HRC 35–45	For wear resistanceASTM E18
Operating Pressure	0.5–1.6 MPa	Below 0.5 MPa atomization is poorISO 5208
Gas Purity	≥95 %	Lower purity may clog nozzle

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Nozzle Body Part
Main structural housing containing flow channels

Material: High-Chromium Stainless Steel
Orifice Insert Part
Precision-machined component defining flow characteristics

Material: Tungsten Carbide
Thermal Barrier Coating Optional Part
Protective layer reducing heat transfer to mounting assembly

Material: Ceramic Composite
Mounting Flange Part
Interface for secure attachment to burner assembly

Material: Carbon Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Blast Furnace Gas Burner Nozzle.

Manufacturers of Blast Furnace Gas Burner Nozzle

Manufacturer profiles associated with Blast Furnace Gas Burner Nozzle.

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Procurement Evaluation Criteria

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Technical documentation

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Manufacturing capability

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Inspection readiness

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Frequently Asked Questions

What materials are used for the nozzle?

The nozzle is available in high-chromium stainless steel or ceramic-lined alloy. The material grade listed is 310S stainless steel per ASTM A240. Confirm the exact material for your application with the supplier.

What is the maximum operating temperature?

The maximum sustained temperature rating is 1200 °C. Ensure the nozzle is not exposed to temperatures above this limit to prevent damage.

What are the connection thread options?

The connection thread size ranges from G1/2 to G2, according to ISO 228-1. Select the appropriate size for your burner assembly mounting.

How do I verify the nozzle's performance?

Check the operating pressure (0.5–1.6 MPa), gas purity (≥95%), and flow capacity (50–500 Nm³/h) against your system requirements. Always confirm these values with the legal manufacturer or supplier for your specific model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0.5-3.0 bar (7.3-43.5 psi)
flow rate:	100-5000 Nm³/h (3530-176,500 scfh)
temperature:	800-1600°C (1472-2912°F)
slurry concentration:	Not applicable (gas-only application)