Natural Flake Graphite — A Key Material for High-Performance Refractories

Natural Flake Graphite: The Key to High-Performance Continuous Casting Refractories

Continuous casting is a cornerstone of modern steelmaking. At the heart of every casting line are three critical refractory components — the sliding gate plate, stopper rod, and nozzle — often referred to as the “three major parts” of continuous casting. These components endure extreme temperatures above 1600 °C, constant thermal cycling, and corrosion from molten steel and slag.

Natural flake graphite plays a decisive role in protecting these materials. Used widely in alumina-carbon and zirconia-carbon refractories, graphite contributes:

• Superior thermal shock resistance

• Excellent anti-erosion and non-wetting behavior

• Improved lubricity and operation smoothness

• Stable carbon control and microstructure

Typical formulations contain 10–20% graphite with fixed carbon content of 85–98% (mesh -100 to -325).

Major refractory producers — RHI Magnesita (Austria), Vesuvius (UK), Krosaki Harima (Japan), and Imerys (France/USA) — all rely on high-purity graphite to ensure refractory durability and steel quality.

At Qingdao Xinghe Graphite Co., Ltd., we supply stable, high-purity natural flake graphite, optimized for use in refractory manufacturing. Our advantages include:

✅ Strict impurity control and consistent particle size
✅ Reliable export documentation and technical support
✅ Long-term cooperation with refractory and steelmaking clients worldwide

As the steel industry strives for increased energy efficiency and extended refractory lifespan, our graphite products continue to be a vital material choice for the future of continuous casting.