Products Description
Graphitized petroleum coke carburizer, also known as GPC, is a black or dark gray hard solid petroleum product with metallic luster and pores. It is a carbonate rock composed of tiny graphite crystals in the form of granular, columnar or acicular. Petroleum coke is composed of hydrocarbons, with a carbon content of more than 99%, and also contains nitrogen, chlorine, sulfur and heavy metal compounds.
Graphitized petroleum coke carburizer is a product that uses calcined petroleum coke as raw material, puts calcined petroleum coke into a graphitization furnace, undergoes high-temperature graphitization, undergoes physical and chemical reactions, and removes impurities such as sulfur and ash.
Sometimes called artificial graphite recarburizer, when used as a recarburizer, it is often called an ultra-low sulfur/low nitrogen recarburizer. Graphite petroleum coke is made from high-quality petroleum coke at a temperature of 2500-3500°C.
GPC is an indispensable additive in all walks of life, especially in the metallurgical field. These substances play a vital role in increasing the carbon content of the material. By introducing carbon elements, carburizers can improve the hardness, strength and comprehensive performance of materials.
Application of Carburizer
Graphitized petroleum coke recarburizers are widely used in industry. It is used as a recarburizer in metallurgy, casting, and precision casting; it is used in the manufacture of high-temperature crucibles in smelting, it is used in the manufacture of lubricants in the machinery industry, and it is used in the manufacture of electrodes and pencil leads. Graphitized petroleum coke is widely used in advanced refractory materials and coatings in the metallurgical industry, stabilizers for military pyrotechnic materials, pencil leads in light industry, carbon brushes in the electrical industry, electrodes in the battery industry, fertilizer catalyst industries, etc. Graphitized petroleum coke can be used in graphite, smelting, chemical and other industries according to its quality. Low-sulfur, high-quality cooked coke, such as needle coke, is mainly used to manufacture ultra-high-power graphite electrodes and some special carbon products; in the steelmaking industry, needle coke is an important material for the development of new technologies for electric furnace steelmaking. Medium sulfur and ordinary cooked coke are widely used in aluminum smelting. High-sulfur, ordinary raw coke is used in chemical production, such as the manufacture of calcium carbide, silicon carbide, etc., and is also used as a fuel for metal casting. Most of the petroleum coke produced in my country is low-sulfur coke, which is mainly used for aluminum smelting and graphite production.
Specifications of Carburizer
| Grade | SiC | F.C | Fe2O3 |
|---|---|---|---|
| ≥ | ≤ | ||
| SiC98 | 98 | 0.3 | 0.8 |
| SiC97 | 97 | 0.3 | 1 |
| SiC95 | 95 | 0.4 | 1 |
| SiC90 | 90 | 0.6 | 1.2 |
| SiC88 | 88 | 2.5 | 3.5 |
Advantages of Carburizer
(1) High carbon: high purity 98.5-99.5%.
(2) Low sulfur: 0.01% to 0.05% low sulfur, stable distribution, can effectively reduce the adverse effect of sulfur on the alloy during the spheroidization and inoculation process, and save costs.
(3) Low nitrogen: nitrogen content 50 PPM~300 PPM (0.005%-0.03%).
(4) High carbon recovery rate: 92-98%.
(5) Fast absorption: easy to dissolve iron.
(6) High graphite core and a high degree of graphitization: it can reduce the shrinkage tendency of molten iron and improve the mechanical properties of castings.
(7) Even if pig iron is not added, it may increase the amount of scrap steel and reduce the demand for pig iron. The genetic influence of pig iron castings is well avoided.
(8) Stable vaporization, good absorption rate, obvious heating effect: no slag. It can effectively protect and extend the life of the furnace and reduce the consumption of the furnace lining.
processes.
What services does we provide you?
Ingredient size customization service
In order to meet the needs of different customers, we accept the following customization:
Customized product specifications: According to the specific needs of customers, you can provide silicon metal products with different specifications, including customized services in terms of chemical composition, size, shape, surface treatment, etc.
Customized packaging requirements: According to the specific needs of customers, you can provide different types of packaging materials and packaging methods to ensure the safety and stability of products during transportation and storage.
Customized product quality: According to the specific needs of customers, you can provide different product quality requirements, including customized services in terms of chemical composition, physical properties, surface treatment, etc.
Non-destructive packaging service
In order to ensure the quantity and quality of the products you receive, we pay more attention to packaging:
High pressure resistance: Our packaging has sufficient pressure resistance to withstand the pressure and vibration that may occur during stacking and transportation.
Shock resistance: Multi-layer packaging avoids possible shock and vibration during transportation, protecting the product from damage as much as possible.
Sealing performance: Adding a layer of waterproof film has sufficient sealing performance to prevent air, moisture and other substances from entering the packaging and affecting the quality of raw materials.
Convenient transportation: We generally use drums or ton bags for packaging, so that you can transport them more conveniently.
Eco-Friendly and Sustainable: Our packaging materials are eco-friendly, allowing you to recycle or dispose of them safely without polluting the local environment.
Free Sample Service
If you want free samples, the process is as follows:
Contact us: Tell us your needs and contact information through the message form on the website.
Communication details: Our professional sales staff will recommend the most suitable products for you according to your needs, and ask you if you need samples. If you need samples, we will provide them to you for free.
Shipping and receipt: After the sample is shipped, we will inform you and track the logistics information of the sample to ensure that you can receive it on time.
Support Third-party Detection
These third-party testing services can provide independent, objective verification that products comply with relevant standards and regulations.
X-ray diffraction (XRD): X-ray diffraction is a commonly used material structure characterization method that can be used to determine the crystal structure and lattice parameters of silicon carbide powder.
Scanning electron microscope (SEM): By observing the surface morphology and microstructure of silicon carbide powder samples, its particle size, shape and distribution can be evaluated.
Energy spectrometer (EDS): used to determine the composition and content of elements in silicon carbide powder samples. Through energy spectrum analysis with an energy spectrometer, the presence and relative content of carbon, silicon and other elements in the sample can be determined.
Infrared spectroscopy (IR): IR spectroscopy can be used to analyze the chemical bonds and functional groups of silicon carbide powder.
Case Study
Case Study: Improving Steelmaking Efficiency with High-Performance GPC Recarburizer
The Challenge
A mid-sized steel mill was experiencing inconsistent carbon recovery and high ash residue when using conventional petroleum coke recarburizers. This led to increased production costs and rejected batches due to off-spec carbon content.
The Solution
We supplied our Graphitized Petroleum Coke (GPC) Recarburizer – Carbon Raiser with:
Fixed Carbon > 98.5%
Ultra-low sulfur (< 0.05%)
Controlled particle size distribution
High carbon absorption rate (> 90%)
The Results
✅ 15% reduction in recarburizer consumption per ton of steel
✅ Faster melt-in time – shorter cycle times
✅ More stable carbon yield – reduced rejected batches
✅ Lower sulfur – improved final steel quality
Conclusion
Switching to high-quality GPC recarburizer directly improved the mill's bottom line and product consistency.
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