Carbon Raiser

Your Professional Carbon Raiser Supplier

Our goal is to become your true partner in the field of carbon raiser in China. ZHEN AN INTERNATIONAL CO., LIMITED is an enterprise specializing in Metallurgical products, integrating production, processing, sales, and importing and exporting business with 30+ years of experience. We are committed to providing a "one-stop service" to meet our customers ' needs. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards.The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.

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Why Choose Us

Our equipment

Our company has advanced production equipment, including 8 12500KW submerged arc furnaces and multiple crushing equipment production lines.

Our customization

Our engineers can provide customized solutions according to the needs of different customers, and specific parameters, sizes and packaging can be customized.

Product market

We not only meet the needs of Chinese steel companies, but also export our products to 150 countries and regions including Japan, South Korea, India, Europe, and the United States.

Our services

In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.

Advantages of Carbon Raiser

Increasing carbon content

During the steelmaking process, adding a carbon raiser can quickly and effectively increase the carbon content in steel, thus adjusting the composition of the steel to meet different performance requirements.

Improving steel properties

Carbon content directly affects the mechanical properties of steel. By adjusting the carbon content with a carbon raiser, the hardness, strength, and wear resistance of steel can be enhanced, making it suitable for various applications.

Cost control

Using a carbon raiser can reduce production costs. For example, in the remelting of scrap steel, adding a carbon raiser can reduce reliance on high-cost, high-quality pig iron.

Specification of Carbon Raiser

ITEM	NO.	F.C	S	ASH	V.M	MOISTURE	NITROGEN/PPM	SIZE/MM
ITEM	NO.	Min%	Max%					(Min90%)
GPC	GF-GPC-98.5	98.5	0.05	0.60	0.70	0.30	300	0.2-1/1-3/1-5/5-10/5-15/5-20
	GF-GPC-99	99	0.03	0.50	0.50	0.20	200
	GF-GPC-98	98	0.2	0.70	0.70	0.50	500
	GF-GSC-98	98	0.5	0.80	0.80	0.50	1000
Size	0.2-1mm,1-3mm ,1-5mm 5-10mm ,5-15mm ,5-20mm Min90% , ( 90% Min or according to customer's Reqirement )

Key Properties of Carbon Raiser

High carbon content

One of the primary reasons for the widespread use of carbon raiser is its high carbon content, often exceeding 95%. This imparts desirable properties to the materials it is added to, such as increased hardness and strength.

Low sulfur and nitrogen content

The calcination process also results in reduced sulfur and nitrogen levels, making carbon raiser a cleaner and more environmentally friendly option. This is particularly crucial in industries where stringent quality standards are imposed.

Types of Carbon Raiser

Graphite carbon raisers(Cpc)

This includes natural graphite and artificial graphite. These carbon raisers have high carbon content and low impurities, making them suitable for high-demand smelting processes.

Petroleum coke carbon raisers(cpc)

Made from by-products of petroleum refining, these have high carbon content and low sulfur and ash content.

Coal-based carbon raisers(cac)

Including anthracite and graphitized anthracite. These carbon raisers are relatively inexpensive but have higher impurity content.

Synthetic carbon raisers

These are chemically or physically synthesized, allowing precise control of carbon content and impurity levels, suitable for high-precision smelting processes.

Application of Carbon Raiser

Steel making

By using carbon raisers during steelmaking, the carbon content in steel can be effectively adjusted, improving the steel’s hardness, toughness, and wear resistance.

Casting

Carbon raisers used in casting have the advantages of low sulfur and low nitrogen. They effectively promote the formation of graphite nuclei, improving the graphite distribution and significantly enhancing the quality and yield of castings.

Metallurgy

Carbon raisers adjust the carbon content in alloys, improving various performance aspects, thereby serving the role of carbon enhancement and replenishment.

Production Process of Carbon Raiser

01/

The raw material mixing: The petroleum coke is first ground into a 300-mesh powder and then mixed evenly with a carbon-containing material. Then add asphalt and mix evenly to get mixed raw material. The mixed raw material comprises (By weight percentage) petroleum coke 15-25%, asphalt 1-3%, and carbon-containing material 60-80% (The mixing ratio of micropurified graphite and free carbon is 3:2).

02/

Pretreatment of raw material: Add water to the mixed raw material, and put it into a rotary granulator machine to granulate it.

03/

Surface treatment: Put the processed granules into the drum and rotate until the surface is smooth. Removal of protrusions and burrs can improve the uniformity of graphitization. This process takes 4-10 hours.

04/

Sieving: Separate the smooth surface granules, remove granules with a size greater than 8mm, crush them and repeat the surface treatment process until the size is less than or equal to 8mm.

05/

Drying: Put the Sieved particles into a vertical dryer. The drying temperature of the vertical dryer is 80℃-120℃, and the drying time is 60min-80min. Ensure that the water content of the material is 1% or less.

06/

Graphitization: Put the dried particles into a graphitization furnace, and calcined at 2300℃-2800℃ for 8-10 days.

Packing and Shipping of Carbon Raiser

Packing	Bag /Steel Drum
Shipping	Shipped by road, sea, rail

FAQ

Q: What is a carbon raiser?

A: Carbon raiser, also known as carbon additive or recarburizer, is a material added to molten metal to increase its carbon content. When being used in steelmaking or casting, the fixed carbon of carbon raiser can reach more than 95%. It has been widely used in various industries such as metallurgy, chemical, and power.

Q: What does increasing carbon content do?

A: Increasing carbon content increases hardness and strength and improves hardenability. But carbon also increases brittleness and reduces weldability because of its tendency to form martensite.

Q: What does high carbon content do?

A: However, the higher carbon content also makes these steels more brittle and less ductile, which makes it more susceptible to cracking under certain conditions. High-carbon steel is also more challenging to weld than lower-carbon-content steels, due to the risk of cracking and brittleness in the heat-affected zone.

Q: What happens if carbon increases?

A: Without carbon dioxide, Earth's natural greenhouse effect would be too weak to keep the average global surface temperature above freezing. By adding more carbon dioxide to the atmosphere, people are supercharging the natural greenhouse effect, causing global temperature to rise.

Q: What is the purpose of carbon content?

A: Steel is made by combining iron, carbon, and other known elements. The function of carbon is to increase its impact resistance and strength. However, this can become a disadvantage if it is not present in the right amount. One main disadvantage of a high concentration of carbon in steel is brittleness.

Q: What happens when carbon content increases?

A: Hardness is increased. But the hardness of the metal has to be controlled because it could become brittle. Depending on the application, brittleness may be a critical factor.

As one of the most professional carbon raiser manufacturers and suppliers in China, we're featured by quality products and competitive price. Please rest assured to buy discount carbon raiser in stock here from our factory. Contact us for customized service.