Products Description
Carbon raiser/ carbon additive is also known as gas calcined anthracite coal (GCA) or calcined anthracite coal. The main raw material used to make Carbon raiser is unique high quality anthracite, with characteristics of low ash and low sulfur. Carbon raiser has two main uses, as a fuel or as an additive. When being used as a carbon additive in Steel smelting or casting, fixed carbon above 95% can be achieved. It has been widely used in different industries like metallurgy, chemistry, electricity etc. The selection of carbon content is determined by quality requirements of the steel or ferroalloy production, as well as the cost effectiveness & availability of carbon products. It's calorific value may reach 9386Kcal/Kg
Chemical Composition
Carbon raiser is available in the following different chemical composition depending on the customer requirements.
| Grade | F.C. (%min.) | Ash (%max) | V.M. (%max) | S (%max) | Moisture (% max) |
| CR-95 | 95 | 4.5 | 1.0 | 0.20 | 0.3 |
| CR-94 | 94 | 5.0 | 1.0 | 0.25 | 0.3 |
| CR-92 | 92 | 6.5 | 1.2 | 0.25 | 0.3 |
| CR-93 | 93 | 6.0 | 1.2 | 0.25 | 0.5 |
| CR-91 | 91 | 7.0 | 1.5 | 0.30 | 1.0 |
| R-90 | 90 | 7.0 | 1.5 | 0.30 | 1.0 |
Appearance: Black granules
Size: 1-5mm, 1-4mm, 0.5-3mm, 1-3mm at customer's option
Packing: 25 or 50Kg bags or 1 Ton big bags or 1150Kg big bags
Supply Ability: 4000MT/month
Types of carbon raiser
Petroleum coke carbon raiser
It is processed by calcining and purifying petroleum coke and has a round or polygonal appearance. It is an ideal carbon-added material and reaction intermediate in metallurgy, chemical industry, machinery, electric power and other industries, and is widely used.
Metallurgical coke
They can usually be used in cupola furnaces. In addition to smelting, its role is also studied as carbon is used as different metal charges.
Calcined coal
Its general composition is c90-93%, s0.3-0.5%. Mainly used by steelmaking enterprises.
Graphitized carbon raiser
The main materials are graphitized petroleum coke and graphite electrodes. And the general composition is carbon content 98-99.5%; sulfur 0.05-0.03%. It is characterized by fast absorption, high carbon content and low sulfur content. It is mainly used in ductile iron.
Natural graphitized
Mainly natural graphite, with a carbon content of 65%-99%. It is mainly used in steel mills, not foundries.
Industrial Applications
1. Steelmaking industry: Using carburizers as additives can effectively increase the carbon content in molten steel and improve the physical and mechanical properties of steel. To obtain steel with excellent performance.
2. Casting industry: The carbon content of the original smelting metal raw materials is often low. They can effectively increase the carbon content of castings, improve their organizational structure and mechanical properties. Enhance the mechanical strength and wear resistance of castings.
3. Smelting industry: During the smelting process, the use of carburizers can effectively reduce the impurity content and improve the fluidity of the flux. At the same time, it can also improve the production efficiency of the smelting process and reduce energy consumption.
4. Machinery manufacturing: As a lubricant and wear-resistant material, it can improve the wear resistance, performance and life of mechanical parts.
5. Aerospace industry: The carbon materials produced with it have excellent properties of high strength, high conductivity and high temperature stability, so they are widely used.
As a carburizer manufacturer, Jinsun will supply high-quality products for your production of high-quality steel, cast iron and alloys to meet your production needs.
Case Study: Precision Casting Manufacturer in Germany
Challenge: A premium automotive parts foundry struggled with inconsistent final carbon content (fluctuations up to 0.15% C) using conventional petroleum coke, leading to scrap rates exceeding 5% in high-grade ductile iron production.
Our Solution & Implementation: We recommended and supplied our low-sulfur, high-fixed-carbon GPC in 2-5 mm granules. Our technical team provided a precise ladle addition protocol based on their tapping temperature and mass.
Results & Data: Within two months of using our material, carbon recovery stabilized at 94-96%. Final carbon content consistency improved dramatically (±0.05% C), reducing scrap related to carbon deviation by 80%. The client now sources 100% of their recarburizer from us, citing "unmatched predictability and superior melt quality".
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