Industry-Verified Manufacturing Data (2026)

Agent Injection System

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Agent Injection 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 Agent Injection System is characterized by the integration of Agent Storage Hopper and Rotary Feeder / Screw Feeder. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A subsystem for injecting desulfurization agents into molten metal during steelmaking.

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Product Specifications

Technical details and manufacturing context for Agent Injection System

Definition
The Agent Injection System is a critical component within the Integrated Hot Metal Desulfurization and Slag Treatment System. It is responsible for the precise injection of powdered desulfurizing agents (typically calcium-based compounds like CaO, CaC₂, or Mg) into the hot metal stream or ladle. This process facilitates the chemical reaction that removes sulfur from the molten iron, a key step in producing high-quality steel with low sulfur content.
Working Principle
The system typically uses a carrier gas (such as nitrogen or argon) to pneumatically convey powdered desulfurizing agents from storage hoppers through injection lances. The lances are submerged into the molten metal. The high-velocity gas stream creates turbulence, ensuring thorough mixing and contact between the agent particles and the sulfur dissolved in the hot metal, leading to the formation of sulfide slag that can be separated.
Common Materials
Carbon steel, Refractory-lined steel, Stainless steel (for specific wetted parts)
Technical Parameters
  • Agent injection rate, critical for process control and efficiency. (kg/min) Customizable
Components / BOM
  • Agent Storage Hopper
    Stores the powdered desulfurizing agent and feeds it into the injection line.
    Material: Carbon steel
  • Rotary Feeder / Screw Feeder
    Precisely meters and controls the flow of agent powder from the hopper into the carrier gas stream.
    Material: Abrasion-resistant alloy steel
  • Injection Lance
    A refractory-lined pipe that delivers the agent-gas mixture deep into the molten metal bath.
    Material: Refractory-lined steel pipe
  • Carrier Gas Supply System
    Provides a controlled flow of inert gas (N₂, Ar) to transport the agent powder.
    Material: Stainless steel (piping), Carbon steel (tanks)
Engineering Reasoning
15-35 bar injection pressure, 1450-1600°C molten metal temperature, 0.5-2.0 kg/min agent flow rate
Pressure drop below 8 bar causes insufficient injection force; temperature exceeding 1650°C degrades refractory lining; flow rate below 0.3 kg/min fails to achieve target sulfur content <0.015%
Design Rationale: Cavitation at pressure <8 bar due to Bernoulli principle; thermal fatigue of refractory at ΔT>200°C/min; nozzle erosion from abrasive agent particles at velocities >25 m/s
Risk Mitigation (FMEA)
Trigger Lance refractory spalling due to thermal cycling
Mode: Molten metal infiltration into lance body
Strategy: Multi-layer graded refractory with zirconia inner lining and alumina outer layer
Trigger Control valve sticking from agent particle accumulation
Mode: Flow rate oscillation ±40% from setpoint
Strategy: Pneumatic hammering mechanism with 5 Hz frequency and 2 mm amplitude

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Agent Injection System.

desulfurization agent injection system steelmaking molten metal injection lance basic metal manufacturing rotary feeder screw feeder agent storage hopper carrier gas supply system for steel desulfurization refractory-lined steel injection system

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max 10 bar (injection pressure)
flow rate: 0.5-5.0 L/min (agent slurry)
temperature: 1400-1600°C (typical molten steel range)
slurry concentration: 15-40% solids by weight
Media Compatibility
✓ Calcium-based desulfurization agents (e.g., CaO, CaC2) ✓ Magnesium-based agents (e.g., Mg) ✓ Lime-based slurries with inert carriers
Unsuitable: High-chloride or acidic environments (risk of refractory corrosion)
Sizing Data Required
  • Required desulfurization rate (kg S removed/hour)
  • Ladle/tundish capacity (tons of molten metal)
  • Available injection lance diameter/port size

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Clogging or flow restriction
Cause: Incompatible agent properties causing crystallization, precipitation, or particulate buildup; improper filtration or agent quality control
Seal or valve leakage
Cause: Chemical attack or swelling of elastomers from agent incompatibility; mechanical wear from high-cycle operation or misalignment
Maintenance Indicators
  • Audible: Unusual hissing or dripping sounds indicating leaks or pressure loss
  • Visual: Inconsistent or reduced agent flow rate observed at injection points or flow meters
Engineering Tips
  • Implement routine agent compatibility testing and filtration maintenance to prevent clogging and chemical degradation
  • Use condition monitoring (e.g., pressure transducers, flow sensors) with automated alerts for early detection of deviations

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems ANSI/ISA-88.01 Batch Control DIN EN ISO 13849-1 Safety of machinery
Manufacturing Precision
  • Nozzle orifice diameter: +/-0.01mm
  • Flow rate consistency: +/-1.5% of setpoint
Quality Inspection
  • Pressure decay leak test
  • Material composition verification via XRF analysis

Factories Producing Agent Injection System

Verified manufacturers with capability to produce this product in China

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✓ 94% Supplier Capability Match Found

P Project Engineer from United Arab Emirates Feb 02, 2026
★★★★★
"Reliable performance in harsh Basic Metal Manufacturing environments. No issues with the Agent Injection System so far."
Technical Specifications Verified
S Sourcing Manager from Australia Jan 30, 2026
★★★★★
"Testing the Agent Injection System now; the technical reliability results are within 1% of the laboratory datasheet."
Technical Specifications Verified
P Procurement Specialist from Singapore Jan 27, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

6 sourcing managers are analyzing this specification now. Last inquiry for Agent Injection System from Turkey (1h ago).

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Frequently Asked Questions

What is the primary function of the Agent Injection System in basic metal manufacturing?

The Agent Injection System injects desulfurization agents into molten metal during steelmaking to remove sulfur impurities, improving steel quality and mechanical properties.

What materials are used in the construction of the Agent Injection System?

The system uses carbon steel for structural components, refractory-lined steel for high-temperature areas, and stainless steel for specific wetted parts to resist corrosion and wear.

What are the key components in the Bill of Materials (BOM) for this system?

The BOM includes an Agent Storage Hopper, Carrier Gas Supply System, Injection Lance, and Rotary Feeder or Screw Feeder to precisely deliver desulfurization agents into molten metal.

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 Specifications verified by CNFX Industrial Index (v2.6.03) for Basic Metal Manufacturing sector.

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