Egg Shape Electrode Paste is a specialized carbon-based material that plays a crucial role in the production of ferroalloys and calcium carbide. It is extensively used as a conductive material in submerged arc furnaces (SAFs) and electric arc furnaces (EAFs).
Composition:
Egg Shape Electrode Paste primarily consists of a blend of carbonaceous materials and various binder agents. The carbonaceous materials used include calcined anthracite, graphite, and petroleum coke, which serve as the conductive phase in the paste. These carbon sources are selected for their high carbon content, low impurity levels, and suitable particle size distribution.
Binder agents are essential components that bind the carbon particles together, ensuring the paste’s cohesiveness and integrity during the electrode manufacturing process. Commonly used binder agents include coal tar pitch, petroleum bitumen, and various proprietary blends. The selection of binder agents depends on factors such as the desired viscosity, strength, and thermal stability of the final paste.
Properties:
Egg Shape Electrode Paste exhibits several key properties that make it ideal for its intended applications:
High Electrical Conductivity: The carbonaceous materials present in the paste offer excellent electrical conductivity, allowing for efficient current transfer during the smelting process.
Good Thermal Conductivity: The thermal conductivity of Egg Shape Electrode Paste enables effective heat transfer within the furnace, aiding in the melting and refining processes.
Low Volatile Matter: The low volatile matter content in the paste reduces undesired emissions during furnace operations, contributing to a cleaner and more environmentally friendly production process.
High Mechanical Strength: The binder agents used in the paste formulation provide mechanical strength, ensuring that the electrodes retain their shape and structural integrity, even under high-temperature and high-pressure conditions.
Low Ash Content: Egg Shape Electrode Paste typically has a low ash content, minimizing unwanted impurities in the furnace and reducing the risk of slag formation.
Applications:
Egg Shape Electrode Paste finds widespread application in the production of ferroalloys and calcium carbide. It is commonly used in submerged arc furnaces (SAFs) and electric arc furnaces (EAFs) for the following purposes:
Ferroalloy Production: Egg Shape Electrode Paste serves as a conductive material in the SAFs used for smelting ferroalloys such as ferrosilicon, ferromanganese, and ferrochromium. The paste facilitates the electrical current transfer required for high-temperature reduction and refining processes.
Calcium Carbide Production: In the production of calcium carbide, Egg Shape Electrode Paste is used as a conductive material in EAFs. The intense heat generated by the electric arc enables the production of calcium carbide from lime and coke, with the electrode paste ensuring efficient current transfer and sustaining the required temperatures.s and ensure uniform particle distribution. This step enhances the paste’s performance and facilitates subsequent coating processes.
Coating: The paste is coated onto a current collector substrate, such as aluminum foil or copper foil, using techniques like doctor-blading or screen-printing. The coated substrate is then dried and cured to remove the solvent and solidify the paste, forming the electrode.
Electrode assembly: The prepared electrode is assembled into the desired electrochemical device, along with other components like separators and electrolytes, to complete the manufacturing process.
Product Specification:
| Carbon Electrode Paste | Specification | ||||
| CW-CP-1 | CW-CP-2 | CW-CP-3 | CW-CP-4 | CW-CP-5 | |
| Ash content % ≤ | 4,0 | 6,0 | 7,0 | 9,0 | 11,0 |
| Volatile content % | 12,0-15,5 | 12,0-15,5 | 9,5-13,5 | 11,5-15,5 | 11,5-15,5 |
| Bulk density g/cm3 ≥ | 1,38 | 1,38 | 1,38 | 1,38 | 1,38 |
| Compressive strength MPa ≥ | 18 | 17 | 22 | 21 | 20 |
| Resistivity µΩ·m ≤ | 65 | 75 | 80 | 85 | 90 |
| Elongation % | 5-20 | 5-20 | 5-30 | 15-40 | 15-40 |
Packing: briquettes are loaded in bulk or packed in big-bags; cylinders are steel strapped on wooden pallets and can be covered with plastic foil.
The Electrode paste specification can be customized according to customer’s unique furnace info.
