---
title: "Primary Crusher"
industry: "Basic Metal Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PRIMARY_CRUSHER"
  data_integrity_hash: "b4061c620834e4182f146afde74be196"
  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:PRIMARY_CRUSHER"
  data_source_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/product/primary-crusher.md"
  official_resource_url: "https://cnfx.com/industry/basic-metal-manufacturing/product/primary-crusher"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.8-1.2 MPa hydraulic pressure, 15-25 RPM rotor speed, 200-400 kW power consumption"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 1.5
    unit: "MPa"
    consequence: "Fatigue failure from cyclic loading at 0.1-10 Hz impact frequency, abrasive wear from SiO2/Al2O3 slag particles (Mohs hardness 6-9), thermal stress from 300-600°C slag temperature differentials"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Abrasive particle ingress exceeding 50 μm size at &gt;5% concentration"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Multi-stage filtration system with 10 μm absolute filters and magnetic separators"
  - node_2:
      trigger: "Impact loading exceeding 150 kN from oversized slag chunks (&gt;1 m³)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Pre-screening grizzly with 800 mm opening and load cell monitoring with 100 kN threshold shutdown"
bom_nodes:
  crushing-chamber:
    type: "part"
    urn: "URN:CNFX:ME:CRUSHING_CHAMBER"
    interface_type: "physical-logic-coupled"
  jaw-plates:
    type: "component"
    urn: "URN:CNFX:ME:JAW_PLATES"
    interface_type: "physical-logic-coupled"
  eccentric-shaft:
    type: "component"
    urn: "URN:CNFX:ME:ECCENTRIC_SHAFT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 21873-1:2015 (MOBILE CRUSHERS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/basic-metal-manufacturing/product/primary-crusher.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "28bf2f0703c7614e678ef7ae81df4831b21e30c3da7a40864fb5bdee4793d290"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Primary Crusher

## 1. Technical Definition
The first-stage crushing equipment in a slag processing system that reduces large slag chunks to smaller, manageable sizes.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.8-1.2 MPa hydraulic pressure, 15-25 RPM rotor speed, 200-400 kW power consumption**. Failure boundary: **Hydraulic pressure exceeding 1.5 MPa causes seal failure, rotor speed exceeding 30 RPM induces critical vibration (&gt;8 mm/s RMS), power draw exceeding 450 kW triggers thermal overload**, Mechanism: **Fatigue failure from cyclic loading at 0.1-10 Hz impact frequency, abrasive wear from SiO2/Al2O3 slag particles (Mohs hardness 6-9), thermal stress from 300-600°C slag temperature differentials**.

### 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 |
| :--- | :--- | :--- | :--- |
| Abrasive particle ingress exceeding 50 μm size at &gt;5% concentration | 8 | Bearing raceway spalling and lubrication contamination | Multi-stage filtration system with 10 μm absolute filters and magnetic separators |
| Impact loading exceeding 150 kN from oversized slag chunks (&gt;1 m³) | 8 | Rotor shaft bending deflection &gt;0.5 mm/m and hammer wear plate fracture | Pre-screening grizzly with 800 mm opening and load cell monitoring with 100 kN threshold shutdown |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Crushing Chamber](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/crushing-chamber.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Vibrating Feeder**, **Conveyor Belt System**, **Dust Suppression System**  
**Downstream Applications**: Crushed Slag Aggregate, Slag Cement Additive, Metallic Slag Concentrate  

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

### Q: What materials are used in this primary crusher for slag processing?
**A**: This primary crusher is constructed from high manganese steel and alloy steel components, specifically designed to withstand the abrasive nature of slag in basic metal manufacturing processes.

### Q: What are the main components of this primary crusher?
**A**: The key components include the crushing chamber, jaw plates, and eccentric shaft, which work together to efficiently reduce large slag chunks to smaller, manageable sizes for further processing.

### Q: Why is a primary crusher important in slag processing systems?
**A**: As the first-stage crushing equipment, the primary crusher is essential for breaking down large slag chunks into smaller pieces, enabling efficient downstream processing and material handling in metal manufacturing operations.

## 6. Manufacturing Compliance
- ISO 21873-1:2015 (MOBILE CRUSHERS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Primary Crusher](https://cnfx.com/industry/basic-metal-manufacturing/product/primary-crusher)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: PRIMARY_CRUSHER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 856cc6ca
