Steel wear solutions
Blast Furnace – Cast House & Slag Handling Wear Solutions
Wear solutions for slag, heat, and hot metal handling.
Blast Furnace
Zone Introduction
Blast Furnace Cast House handles molten hot metal and slag flowing at 1400–1500°C.
This zone is extremely critical for safety and continuous ironmaking. Molten slag is highly abrasive and chemically aggressive — leading to severe equipment deterioration.
Any leakage → Catastrophic safety incident + furnace emergency shutdown.
How wear happens
Process Description
During tapping, molten iron and slag exit the taphole and flow across runners.
Slag is separated and directed into slag pits or granulation units.
Wear mechanisms involved:
These mechanisms rapidly thin metal plates and distort flow channels, threatening containment integrity.
Continuous tapping cycles accelerate fatigue → sudden breakthrough failures can occur without warning.
- Molten slag particles High-temp abrasion
- Reactive oxides Chemical corrosion of steel
- Flow turbulence at bends Localized erosion
- Thermal cycling between taps Fatigue cracking
- Accidental skulls Impact shock loads
Application · Problem · Artha solution
Applications we protect
| Application | Problem observed | Artha expertise / solution |
|---|---|---|
| Bell-less top / Charging system | Severe abrasion due to coke and sinter impact | High chromium Carbide wear-resistant liners for extended service life |
| Bell hopper & distribution chute | High impact and sliding abrasion | High chromium Carbide plates for high-impact and abrasion resistance |
| Stock house chutes | Continuous wear from raw material movement | High-hardness High chromium Carbide liners to reduce maintenance |
| Furnace throat area | Extreme temperature and abrasive burden | High-temperature resistant High chromium Carbide liners |
| Burden distributor | Rapid wear due to material flow and heat | High chromium Carbide wear plates with enhanced thermal resistance |
| Skirt plates | Erosion caused by falling burden material | High chromium Carbide wear liners to increase service life |
| Dust catcher & downcomer | High-velocity dust erosion | High chromium Carbide abrasion-resistant liners |
| Hot blast stove ducts | High temperature and thermal cycling | High chromium Carbide high-temperature resistant plates |
| Cast house runners | Severe wear due to molten metal and slag | Special High chromium Carbide wear-resistant plates for extreme conditions |
| Slag runner & troughs | Rapid erosion and thermal shock | High chromium Carbide wear liners with high thermal stability |
| Mud gun & taphole area | Intense heat and abrasion | High chromium Carbide wear plates for extended operational life |
| Gas cleaning plant ducts | Erosion from hot dust-laden gases | High chromium Carbide plates for erosion resistance |
Areas of Wear & Root Causes
- Slag runners & troughs Hot abrasion + corrosion
- Runner junctions Turbulent flow → Heavy erosion
- Slag launders Impact & temperature variation
- Slag runner covers Oxidation due to hot gases
Performance Loss & Downtime Impact
- Runner collapse or leaks Extreme safety hazard
- Emergency maintenance Production downtime
- Poor slag handling Metal loss & yield reduction
- Costly refractory replacement & labor repairs
What we recommend
Recommended Products & Benefits
High-Temperature Plates (900°C)
- Resistant to slag attack and thermal shock
- Maintains structural strength during tapping cycles
Artha WearTech Expertise Plate Reinforcement
- Provides impact + abrasion protection in slag pathways
- Prevents distortion and breakthrough
Outcome Delivered by ARCO Wear Solutions
- Safe and reliable slag handling
- Higher MTBF for cast house runners
- Reduced emergency breakdowns
- Lower downtime & repair labor
- Extended campaign life and cost savings
Ready to put a number on your wear cost?
Send us the application. We will come back with a specification, a campaign estimate and the cost per tonne handled.