Smelting & Metallurgy Solutions
VALVA provides heavy-duty flow control solutions for the world’s most demanding smelting and metallurgical processes. From iron and steel production to non-ferrous metal refining, our valves are engineered to withstand abrasive slurries, high-velocity dust, and extreme thermal loads. We ensure process continuity where standard valves simply cannot survive.
Conquering the Harshest Industrial Conditions
The metallurgy industry is a battle against wear and heat. VALVA designs valves to master these specific operational challenges:
- Severe Erosion Resistance: Utilizing Tungsten Carbide and Stellite coatings to protect against abrasive ore slurries and high-velocity particles.
- High-Temperature Cycling: Valves designed for stable performance in blast furnace gas systems and smelting exhaust.
- Dust & Particulate Handling: Specialized sealing designs that prevent particulates from clogging the valve mechanism or damaging the seats.
- Corrosive Smelting Byproducts: High-alloy solutions (Hastelloy/Stainless Steel) for sulfuric acid recovery and pickling lines.
Solutions for the Metals Industry
- Iron & Steel Production: Robust valves for blast furnace cooling, gas cleaning systems, and pulverized coal injection.
- Alumina & Aluminum Smelting: Specialized valves for handling bauxite slurry and high-temperature caustic digestion processes.
- Non-Ferrous Refining: Corrosion-resistant solutions for Copper, Nickel, and Gold leaching and refining circuits.
- Pickling & Surface Treatment: Acid-resistant valves (Zirconium/Titanium/Tantalum) for steel sheet pickling lines.
- Environmental & Emission Control: High-temperature butterfly and gate valves for flue gas desulfurization (FGD) in smelting plants.
Wear-Resistant Metallurgy & Coatings
In smelting, the base metal is only half the story; the surface treatment is what defines the valve’s life:
| Component / Condition | Recommended Solution | Technical Advantage |
| Abrasive Slurries | Ceramic-Lined / Tungsten Carbide | Extreme hardness (up to 90 HRC) to prevent erosive wear. |
| High-Temp Gas | Stainless Steel 310S / Inconel | Resists oxidation and maintains strength at 1000°C+. |
| Acid Pickling | Hastelloy C276 / Zirconium | Total resistance to hot hydrochloric and sulfuric acids. |
| Cooling Water | Ductile Iron / Carbon Steel | Cost-effective and durable for plant utility systems. |
Metallurgical Standards & Reliability
Every VALVA valve destined for a smelting facility is built to survive:
- Design Standards: ASME B16.34, API 600, and customized designs for specific OEM furnace requirements.
- Hard-Facing Excellence: Precision application of hard-facing alloys via HVOF (High-Velocity Oxy-Fuel) spraying or laser cladding.
- Testing: 100% pressure testing and optional abrasive cycle testing to verify sealing integrity.
- Durability: Heavy-wall thickness designs to provide extra corrosion/erosion allowance for longer service life.