Carbon Additive Supplier | Calcined Petroleum Coke & Graphitized Carburizer

Product Overview

Carbon Additive (Carburizer) is an important carbon material used in steelmaking and foundry production. It is mainly used to increase carbon content in molten iron during smelting, meeting different material composition requirements.

It is widely used in gray iron, ductile iron, and steelmaking processes as a key additive for adjusting molten iron composition and improving casting performance.

Product Classification

Carbon Additive is classified according to raw materials and production processes:

• High-temperature Carbon Additive

• Medium-temperature Carbon Additive

• Calcined Coal Carbon Additive

Common raw materials include:

• Calcined Coal Carburizer (C90)

• Petroleum Coke Carburizer (C95, C96)

• Graphitized Carburizer (C98, electrode carbon particles)

Common Grades

• C90 (Calcined Coal)

• C95 (Petroleum Coke)

• C96 (Petroleum Coke)

• C98 (Graphitized / Electrode Carbon)

Technical Specifications

High-temperature Carbon Additive:

• Carbon: ≈98.5%

• Sulfur: ≤0.05%

• Nitrogen: ≈300 ppm

Medium-temperature Carbon Additive:

• Carbon: ≈98%

• Sulfur: ≤0.3%

• Nitrogen: ≈800 ppm

Particle Size Selection

Particle size should be selected according to furnace capacity:

• Below 1 ton furnace: 0.2–2 mm

• Above 1 ton furnace: 1–5 mm

• Ductile iron production: high-temperature type preferred

• Gray iron production: medium-temperature type recommended

Application Industry

• Foundries

• Steel mills

Main Application

Carbon Additive is used to increase carbon content in molten iron during smelting, ensuring the required chemical composition for different casting and steel production processes.

Proper use of Carbon Additive helps improve molten iron quality, enhance casting performance, and ensure stable product consistency.

Product Advantages

• Stable carbon increase performance

• Improves molten iron composition

• Enhances casting quality

• Suitable for multiple casting processes

• Multiple grades and particle sizes available

Packaging & Storage

• Inner + outer composite bag

• Outer jumbo bag packaging

• Moisture-proof storage required

• Keep dry to maintain performance

Quality Assurance

We can provide:

• Chemical composition analysis report

• Particle size distribution report

• Product quality certificate (COA / MTC)

Contact Us

Contact us for Carbon Additive specifications, grade recommendations, and quotation solutions.