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| Customization: | Available |
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| Application Area: | Steel Industry |
| Feature: | High-Thermal Conductivity, High Fixed Carbon |
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Foundry Coke with CSR more than 60 and Fixed Carbon more than 85% in steel industry
Foundry Coke is a solid fuel obtained by dry distilling coal at temperatures of approximately 1000°C. It features high calorific value, low ash content, and low volatile matter. It has a wide range of applications.
Role in Ironmaking:
1. Heat Source: Foundry Coke burns in the blast furnace, generating carbon dioxide and releasing a large amount of heat. This heat is the primary heat source for ore reduction and melting in the blast furnace.
2. Reducing Agent: During blast furnace ironmaking, the reduction of iron ore requires reducing gas CO, which is primarily provided by coke. Foundry Coke participates in the reduction reaction through both indirect and direct reduction. Indirect reduction begins at 400°C, while direct reduction begins at temperatures above 850°C, ultimately reducing the iron oxide in the iron ore to metallic iron.
3. Carbon Supply Agent: The carbon in molten iron primarily comes from the dissolution of coke in the blast furnace. As the liquid iron in the dripping zone comes into contact with the coke, carbon is further incorporated into the iron, achieving the required carbon content (approximately 4%) in pig iron.
4. Skeletal Support: Foundry Coke's high strength and massive structure provide support within the blast furnace, ensuring the integrity of the charge column. Its loose skeleton facilitates the passage of gases and molten fluids.
Foundry Coke grades are primarily categorized by their intended use and industry standards. The following are the main classification criteria:
1. Foundry Coke
The particle size range is 30-80mm. It is primarily used in the foundry industry, where a larger particle size is required to support the charge structure.
2. Blast Furnace Coke
a. Large Blast Furnaces (1000-4000 m³): The recommended particle size is 40-60mm, suitable for applications requiring high air permeability.
b. Small and Medium-Sized Blast Furnaces: A particle size of 25-40mm is commonly used, balancing air permeability and cost-effectiveness.
3. Chemical and Metallurgical Coke
a. Chemical Coke: The particle size is typically less than 25mm and is used for applications such as pipe filling.
b. Metallurgical Coke: The ash content must be controlled between 11% and 14%, and the particle size is generally between 10-25mm. Some fine coke <10mm is required for sintering.
L.T Group can provide different grades of Foundry coke according to customer needs and guarantee high-quality production.
| Parameter | Typical Range/Va |
| CSR(Coke Strength after Reaction) | ≥55-65 |
| CRI(Coke Reactivity Index) | ≤25-30 |
| Size/Mesh | 25-80mm |
| Ash Content(%A) | 8-12% |
| Sulfur Content(%S) | <1% |
| Moisture(%M) | <1.5% |
| Fixed Carbon(%) | 85-90% |
"Coke CSR at least 60"
It means the coke must retain at least 60% of its mechanical strength after reacting with CO2
Importance:
If CSR is low → coke breaks easily → gas flow in the furnace is disrupted → efficiency decreases.
If CSR is high → coke stays intact → productivity and smelting quality improve.
As an important industrial raw material, Foundry coke packaging and transportation are crucial. Proper packaging and transportation methods not only ensure stable Foundry coke quality but also effectively prevent environmental pollution and safety hazards. The following details Foundry coke packaging and transportation methods and precautions.
1. Foundry coke Packaging Methods
a. Bulk: Bulk is the most common method for transporting Foundry coke, suitable for large quantities and long distances. Bulk Foundry coke is typically transported using dedicated vehicles or ships. This method is cost-effective, but requires attention to dust and moisture protection.
b. Bag-packing: Bag-packing Foundry coke is primarily suitable for small quantities and short distances. Foundry coke is packaged in woven or plastic bags for easy handling and storage. Bag-packing can effectively reduce Foundry coke loss during transportation, but is relatively expensive.
2. Safety Precautions During Transportation
a. Dust Control: During Foundry coke transportation, effective dust control measures should be implemented, such as covering with tarpaulins and using enclosed transport vehicles, to reduce environmental pollution from Foundry coke dust.
b. Moisture-proof Measures: Foundry coke easily absorbs water and deliquesces, so precautions must be taken during transportation to prevent moisture. During rainy or humid conditions, the sealing of the transport vehicle should be strictly inspected to ensure that the Foundry coke is not affected by moisture.
c. Fire Prevention Measures: Foundry coke is flammable, so strict fire prevention regulations must be observed during transportation. Smoking, using open flames, and other dangerous behaviors are prohibited near the transport vehicle. Appropriate fire-fighting equipment should be available for emergency response.
3. Key Factors for Ensuring Stable Foundry coke Quality
a. Appropriate Packaging: Choosing appropriate packaging methods can effectively protect the Foundry coke from damage and contamination during transportation, thereby ensuring stable Foundry coke quality.
b. Strict Transportation Management: Strengthen management and supervision of the transportation process to ensure that the safety performance of the transport vehicle meets requirements, that drivers have the appropriate qualifications and experience, and that they comply with relevant traffic laws and safety operating procedures.
c. Timely Quality Inspection: Upon arrival at the destination, the Foundry coke should undergo timely quality inspection to confirm that it meets usage requirements. Any problems discovered should be promptly addressed and relevant information recorded to facilitate tracing the cause and identifying corrective measures.
In summary, the packaging and transportation of Foundry coke is a complex and important process. By selecting appropriate packaging methods, strengthening safety precautions during transportation, and controlling and managing key factors to ensure stable Foundry coke quality, the safety and efficiency of Foundry coke transportation can be effectively guaranteed.
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