In the world of metal smelting, every link is like a gear in a precision instrument—working in harmony to produce high-quality metal materials. Carbon additive, a crucial component, is revolutionizing the steel and casting industries with its exceptional properties. Today, we present a premium-grade carbon additive with 90%–95% fixed carbon content.
High Carbon, Low Impurity—Outstanding Quality
1. High Carbon Content, Strong Carbon Boost
With fixed carbon as high as 90%–95%, our additive provides a rich and efficient carbon source during smelting. Precise carbon control is vital for metal properties—whether enhancing strength and hardness in steel or improving wear resistance and toughness in castings, this additive ensures superior performance and quality.
2. Ultra-Low Impurities, The Pure Choice
Impurities hinder metal purity and product quality. Our additive undergoes strict selection and fine processing, with extremely low levels of ash, volatiles, and sulfur—typically 0.2%–0.4%, well below the industry average. This not only reduces harmful elements in the metal but also cuts smelting energy and costs—yielding greater economic value.
Wide Application, Proven Effectiveness
1. Steelmaking’s Best Ally
In steelmaking, this additive fine-tunes carbon and oxygen levels, optimizing internal structure and boosting overall performance. Whether added with scrap in electric furnaces or sprinkled over molten iron, it achieves 90%–95% carbon absorption. The result: stronger, tougher steel with fewer defects—meeting stringent standards across construction, machinery, and automotive sectors.
2. Quality Assurance in Casting
In foundries, the additive improves graphite structure—creating finer, more uniform formations in cast iron. This enhances hardness, strength, and wear resistance. For gray, ductile, and other cast irons, it significantly reduces defect rates and boosts productivity. For instance, one automotive engine block factory saw hardness variation drop from ±15HB to ±5HB, and tool life triple—thanks to our additive, which earned high praise from clients.
Diverse Types to Meet Varied Needs
1. Coal-Based Additive: Cost-Effective Solution
Made from top-grade Ningxia anthracite and calcined at high temperatures, coal-based additives are widely used. With high fixed carbon, strong oxidation resistance, and low ash, sulfur, and phosphorus, they offer excellent performance at competitive prices—ideal for cost-sensitive but quality-conscious users.
2. Graphitized Additive: Premium Option
Includes cylindrical graphite and graphitized petroleum coke. Cylindrical graphite, made from natural graphite or recycled electrodes, boasts low sulfur/nitrogen and high carbon absorption—perfect for high-end casting like ductile iron. Its high degree of graphitization enhances spheroidization, significantly improving mechanical properties. For premium casting, it’s the top choice to enhance competitiveness.
Expert Guidance, Worry-Free Use
1. Smart Selection
Choose based on production needs. If strict carbon and impurity control is required, opt for 95% carbon content and ultra-low impurities. For general steel, 90%–93% suffices. Also consider furnace type—electric furnaces need medium particle size and fast absorption; cupola furnaces benefit from good chunkiness and air permeability. Reputation matters too—pick certified suppliers with proven equipment, testing, and customer feedback.
2. Proper Usage Techniques
Use timing is key. For electric furnaces, add in batches during loading for optimal mixing and absorption. In cupola furnaces, add synchronously with charge. Store in a sealed, dry (<30% humidity) environment away from alkalis to prevent reaction or degradation. For enhanced effect, use with silicon carbide to increase absorption by 5%–8%, or with ferrosilicon while keeping Si/C ratio at 0.6–0.8 for best results.
Join Us for Shared Success
With outstanding performance, wide applicability, and expert support, our 90–95% carbon additive is the ideal choice for enhancing quality and reducing costs in steelmaking and casting. Backed by an expert R&D team and advanced production, we provide top-grade products and all-round service. Whatever your challenge, we’re confident in delivering the best carbon solution for your needs.
