A high-performance synthetic refining slag plays a crucial role in modern ladle metallurgy. It helps steelmakers achieve rapid desulfurization and cleaner steel.

However, poor slag conditioning often causes refractory erosion and non-metallic inclusions. Our premelted synthetic refining slag offers a low melting point and high basicity. It quickly dissolves in the ladle furnace to absorb unwanted oxides and impurities.

Primary Industrial Applications for Synthetic Refining Slag

1. Steelmaking & Secondary Refining (LF / RH / Ladle Furnaces)

• Industry Pain Points: Traditional lime-fluorspar mixes melt slowly at high temperatures. This prolonged heating increases electric power and electrode costs. Furthermore, high residual sulfur causes steel brittleness.

• Refining Slag Solution: Our premelted synthetic refining slag melts between 1300°C and 1350°C. It forms a fluid liquid layer within 3 to 5 minutes. This shortens refining cycle times and cuts energy consumption. Its high basicity achieves 70%–80% desulfurization efficiency.

2. Special Steel & Alloy Manufacturing

• Industry Pain Points: High-end special steels demand exceptional metal cleanliness according to ASTM International standards. Microscopic inclusions cause nozzle clogging during continuous casting. They also lead to fatigue cracks in forged parts.

• Refining Slag Solution: Our slag provides rapid absorption of Al₂O₃ and SiO₂ inclusions. The fluid synthetic slag captures floating particles from liquid steel. This consistently produces ultra-clean steel with low total oxygen levels.

3. Foundries & Heavy Machinery Casting

• Industry Pain Points: Poor metal fluidity causes high defect rates in heavy castings. Trapped gas creates unwanted porosity in thick sections. Conventional flux powders also generate excessive workplace dust.

• Refining Slag Solution: Our premelted product is 100% dust-free and non-hygroscopic. It contains zero crystalline water. This eliminates hydrogen pickup in liquid steel and lowers casting scrap rates.

Key Advantages of High-Purity Synthetic Refining Slag

• 100% High-Temperature Premelting: Our slag is fully fused at high temperatures. It melts instantly upon addition with no unreacted free phases.

• Zero Crystalline Water: Strict drying keeps moisture content under 0.5%. This prevents hydrogen pickup and hydrogen-induced cracking.

• Ladle Refractory Protection: Balanced MgO and Al₂O₃ levels minimize chemical erosion on ladle bricks. This extends refractory lining life by 15%–25%.

• Eco-Friendly Formula: Reduces fluorspar (CaF₂) usage. This lowers fluorine gas emissions and protects furnace linings. Pair with our Calcium Silicon for complete deoxidation control.

• Strict Quality Control: Every production batch undergoes XRF testing according to World Steel Association safety and material guidelines.

Technical Specifications for Synthetic Refining Slag

• Calcium Oxide (CaO): 45% – 55%

• Aluminum Oxide (Al₂O₃): 35% – 45%

• Silicon Dioxide (SiO₂): ≤ 6.0%

• Magnesium Oxide (MgO): 4.0% – 8.0%

• Iron Oxide (FeO + Fe₂O₃): ≤ 1.5%

• Sulfur (S): ≤ 0.05%

• Phosphorus (P): ≤ 0.05%

• Melting Point: 1300°C – 1350°C

Quality Packaging and Logistics

We protect our products against moisture pickup during ocean transport:

• Packaging Options: 1000 kg waterproof jumbo bags with plastic liners.

• Storage Advice: Store in a dry, ventilated warehouse away from direct moisture.

Explore our complete catalog on the LSFerroalloy Product Catalog page. You can also pair your order with our Carbon Additives for total melt shop control.