Carbon Raisers
Your Professional Carbon Raisers Supplier
Hebei Hangba International Trade Co., Ltd. has thrived in the coke industry for over 11 years. Our extensive export experience makes us a reliable global partner, with a strong reputation built on expertise and long - term commitment.We offer a wide range of high - quality products, including metallurgical coke, foundry coke, semi - coke, graphite petroleum coke, calcined petroleum coke, and calcined anthracite coal. These products are essential for industries where energy matters and cost - effectiveness is key.
Why choose us
Quality Assurance
Quality is our top priority. Every production step is strictly controlled to meet international standards. To further assure our clients of the superior quality of our products, we support third - party inspection.
Quality Service
We support port inspections. Our team is available 24/7, 7 days a week for any inquiries or assistance.
Our Market
Our Market include Indonesia, Malaysia, India, Pakistan, Japan, Vietnam, also North America, etc.
Customized Services
Arrange production according to the customer's product specifications. Customizable granularity and packaging.
Your Professional Carbon Raisers Supplier
Calcined anthracite is raw anthracite that has been heat-treated. The process, known as calcination, takes place at high temperatures in electric or gas calcination furnaces.Gas-calcined anthracite is produced by annealing in a horizontal gas furnace at a temperature of around 1280 °C. Gas-calcined anthracite (GCA) is made from anthracite coal, known for its low ash, sulphur and volatile substance content.
|
Mode |
Mode |
Fixed |
Ash |
Volaltile |
Sulfur |
Moisture |
Size |
|
Calcined |
HB-01 |
90% |
8.50% |
1.50% |
0.30% |
0.50% |
1-3mm, |
|
HB-02 |
92% |
6.50% |
1.50% |
0.30% |
0.50% |
||
|
HB-03 |
93% |
5.50% |
1.50% |
0.30% |
0.50% |
||
|
HB-04 |
94% |
4.50% |
1.50% |
0.30% |
0.50% |
||
|
HB-05 |
95% |
3.50% |
1.50% |
0.30% |
0.50% |
Features of calcined anthracite
large enterprise scale
High Carbon Content: Calcined anthracite has a higher carbon content compared to raw anthracite coal. The calcination process removes volatile matter, moisture, and other impurities, leaving behind a more carbon-rich material.
Low Volatile Matter
The calcination process significantly reduces the volatile matter content of anthracite, making calcined anthracite a cleaner-burning and more stable carbon source.
Increased Hardness
Calcined anthracite is often harder than raw anthracite due to the removal of volatile components. This increased hardness can make it suitable for certain industrial applications.
Advantages of Calcined Anthracite Coal
Lower cost
The raw material for Calcined Anthracite Coal is anthracite, which is usually cheaper than petroleum coke. Anthracite has abundant reserves and relatively stable prices. In some areas with abundant coal resources, the cost advantage of raw materials is particularly obvious.
Moderate carbon content
The carbon content of Calcined Anthracite Coal is usually between 80% and 90%. Although it is slightly lower than that of petroleum coke, its carbon content can still meet the demand for carbon increase in most steel smelting processes.
Lower volatile and sulfur content
The volatile components of calcined anthracite are usually lower, and during the calcination process, the volatile components are further removed, which means that there is no excessive gases and harmful substances produced during the combustion process. Its harmful impurities such as sulfur and nitrogen are relatively low, which is crucial to the quality of steel during steel smelting. It can avoid the impact of impurities on molten steel and maintain the purity of the steel.
Good antioxidant properties
Calcined Anthracite Coal has better oxidation resistance, which means it is not easily oxidized during the smelting process, thereby improving its stability in high-temperature environments. This enables it to maintain a long-term carbon increase effect in some smelting processes that require long-term high-temperature heating.
Environmental protection
Due to its low volatile and low sulfur properties, calcined anthracite carbon enhancers release fewer harmful gases during combustion, which is more environmentally friendly than some other carbon enhancers (such as coal tar, petroleum coke, etc.).
Enhance the conductivity of the furnace
Calcined Anthracite Coal can improve the conductivity in the furnace during the smelting process, helping to improve heating and smelting efficiency. Its carbon content is moderate, which can effectively maintain the temperature in the furnace, thereby improving the smelting speed and overall production efficiency.
Diversity of particle size and morphology
The particle size of the Calcined Anthracite Coal can be adjusted according to different process requirements to meet the needs of different smelting equipment. It can be processed into particles of different particle sizes and shapes according to requirements to ensure uniform distribution during the smelting process, which is conducive to improving carbon increase effect and production efficiency.
Strong adaptability
Calcined Anthracite Coal is suitable for a variety of smelting processes, especially in the production of small and medium-sized steel. Due to its moderate carbon content and fewer impurities, it can be widely used in the production of various materials such as ordinary carbon steel, high-carbon steel, cast iron, etc
Type of Calcined Anthracite Coal
Electric calcined anthracite
Anthracite is calcined entirely within an electric calciner using resistance heating between upper and lower electrodes. This process allows for precise temperature control (typically around 2000°C), resulting in deep desulfurization, enhanced graphitization, and structural densification of the anthracite at high temperatures.
Gas-calcined anthracite
This process utilizes flame calcination, using coal, heavy oil, coal gas, or natural gas as fuel, and heating in a rotary kiln. The calcination temperature is typically controlled at around 1250°C. The heat released by the combustion of volatiles generated during the anthracite calcination process replaces some of the fuel, reducing energy consumption.
Uses of Calcined Anthracite Coal
Steel Production
Calcined anthracite is used as a carbon additive in the production of steel. It serves as a recarburizer, providing carbon content to the molten iron during the steelmaking process.
Ferrous Foundries
It is employed in foundry applications to improve the carbon content of the melt and control the composition of cast iron.
Aluminum Smelting
In some cases, calcined anthracite can be used as a carbon additive in the production of aluminum, similar to its application in steelmaking.
Carbon Raisers
Calcined anthracite is sometimes used as a carbon raiser in various industrial processes where an increase in carbon content is required.
☆Dehydration and Hydrogen Emission: Before 1200°C, anthracite calcination primarily involves dehydration and hydrogen evolution, primarily occurring in the upper portion of the electric calciner.
☆Concentrated Desulfurization: As the calcination temperature increases, concentrated desulfurization occurs primarily within the 1400-1600°C range.
☆Increased Graphitization: As the aforementioned gases escape, the calcined anthracite's graphitization degree gradually increases with increasing calcination temperature, resulting in larger crystallites, smaller interlayer spacing, a denser structure, and improved electrical conductivity. At calcination temperatures of around 2000°C, the resistivity of electrically calcined anthracite can be reduced to below 600 μΩ·m.
Precautions
Coal and Coke are classified as flammable substances and should be stored away from open flames and high temperature areas.
Pay attention to the ventilation environment to prevent harmful gases from coal, such as carbon monoxide.
When handling and handling these substances, pay attention to personal protective equipment, such as masks, gloves and safety glasses.
When heating and burning, ensure proper equipment and conditions, and follow correct operating procedures and technological processes to prevent accidents.