---
title: "Basic Oxygen Furnace Vessel"
industry: "Basic Metal Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:BASIC_OXYGEN_FURNACE_VESSEL"
  data_integrity_hash: "55605ba96f834c3a263154d25c14b71e"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:BASIC_OXYGEN_FURNACE_VESSEL"
  data_source_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/product/basic-oxygen-furnace-vessel.md"
  official_resource_url: "https://cnfx.com/industry/basic-metal-manufacturing/product/basic-oxygen-furnace-vessel"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.8-1.2 MPa working pressure, 1600-1700°C operating temperature, 300-400 tons capacity"
    unit: "tonnes"
engineering_limits:
  max_safe_operating_point:
    value: 450
    unit: "°C"
    consequence: "Thermal fatigue from 1600°C thermal cycling causes refractory spalling; oxygen jet impingement at Mach 2.0 creates localized erosion zones; slag-metal interface corrosion at pH 12-14"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Refractory lining thickness reduction below 600 mm due to chemical corrosion"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 12-point infrared thermography system with 50°C alarm threshold and automated shutdown"
  - node_2:
      trigger: "Oxygen lance positioning error exceeding 5° from vertical axis"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement laser-guided lance alignment with 0.1° precision and real-time feedback control"
bom_nodes:
  refractory-lining:
    type: "component"
    urn: "URN:CNFX:ME:REFRACTORY_LINING"
    interface_type: "physical-logic-coupled"
  steel-shell:
    type: "component"
    urn: "URN:CNFX:ME:STEEL_SHELL"
    interface_type: "physical-logic-coupled"
  trunnion-ring:
    type: "part"
    urn: "URN:CNFX:ME:TRUNNION_RING"
    interface_type: "physical-logic-coupled"
  tapping-spout:
    type: "component"
    urn: "URN:CNFX:ME:TAPPING_SPOUT"
    interface_type: "physical-logic-coupled"
  slagging-spout:
    type: "part"
    urn: "URN:CNFX:ME:SLAGGING_SPOUT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/basic-metal-manufacturing/product/basic-oxygen-furnace-vessel.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "5ea744089ce0769583f43507d08ddcd4adc2403ec188d2532808c9ecf95755c9"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Basic Oxygen Furnace Vessel

## 1. Technical Definition
The main reaction vessel in a Basic Oxygen Furnace (BOF) where molten iron is converted into steel through oxygen blowing.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.8-1.2 MPa working pressure, 1600-1700°C operating temperature, 300-400 tons capacity**. Failure boundary: **Vessel shell temperature exceeds 450°C (creep deformation threshold), refractory lining erosion depth &gt; 500 mm, oxygen lance misalignment &gt; 3° from vertical**, Mechanism: **Thermal fatigue from 1600°C thermal cycling causes refractory spalling; oxygen jet impingement at Mach 2.0 creates localized erosion zones; slag-metal interface corrosion at pH 12-14**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Refractory lining thickness reduction below 600 mm due to chemical corrosion | 8 | Vessel shell overheating to 500°C causing permanent deformation | Install 12-point infrared thermography system with 50°C alarm threshold and automated shutdown |
| Oxygen lance positioning error exceeding 5° from vertical axis | 8 | Asymmetric blowing causing uneven temperature distribution (±150°C variation) | Implement laser-guided lance alignment with 0.1° precision and real-time feedback control |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | tonnes | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Trunnion Ring](https://cnfx.com/llms/industry/basic-metal-manufacturing/product/trunnion-ring.md) `(Standalone System)`
- [Slagging Spout](https://cnfx.com/llms/industry/basic-metal-manufacturing/product/slagging-spout.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Ladle Refining Furnace**, **Continuous Casting Machine**, **Gas Cleaning System**  
**Downstream Applications**: Steel Slabs, Steel Billets, Steel Blooms  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the primary function of a Basic Oxygen Furnace Vessel?
**A**: The Basic Oxygen Furnace Vessel serves as the main reaction chamber where molten iron is converted into steel through the injection of high-purity oxygen, removing impurities like carbon, silicon, and phosphorus.

### Q: What materials are used in BOF vessel construction?
**A**: BOF vessels consist of a durable steel shell lined with refractory materials such as Magnesia-Carbon or Dolomite to withstand extreme temperatures (up to 1700°C) and corrosive slag during steelmaking.

### Q: How often does the refractory lining need replacement in a BOF vessel?
**A**: Refractory lining lifespan varies based on operating conditions, typically requiring partial repairs after 500-1,000 heats and full relining every 2,000-4,000 heats to maintain vessel integrity and steel quality.

## 6. Manufacturing Compliance

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Basic Oxygen Furnace Vessel](https://cnfx.com/industry/basic-metal-manufacturing/product/basic-oxygen-furnace-vessel)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: BASIC_OXYGEN_FURNACE_VESSEL | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 50ba78bd
