Semi-graphite Cathode Block
Semi-graphite cathode block is a key refractory material for aluminum electrolyzer, which is made of electrocalcined anthracite or crushed graphite.
- Main Composition: Ash≤2%
- Application: Aluminum Reduction Cell
- Raw Material: Anthracite and Artificial Graphite
- Color: Black
- Bulk Density: ≥1.54g/cm3
- Compressive Strength: ≥26Mpa
- Capacity: 3000 MT per month
- Package: Export wooden pallets
High quality refractory bricks
Product Details
Semi-graphite Cathode Block for Sale
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Description
Semi-graphite cathode block is a key refractory material for aluminum electrolyzer, which is made of electrocalcined anthracite or crushed graphite.
Features
Refractory properties
Semi-graphite cathode block has excellent refractory properties and is able to withstand melting and chemical reactions in high temperature environments. It is capable of stable operation in high temperature aluminum electrolyzer for a long time.
Electrical Conductivity
Semi-graphite cathode blocks have good electrical conductivity, which can effectively conduct the electric current and facilitate the aluminum electrolysis process.
Erosion Resistance
Semi-graphite cathode block has high erosion resistance to aluminum melt and electrolyte. It can resist the corrosion and abrasion of aluminum melt and electrolyte on the cathode block, and prolong the service life of the cathode block.
Structural stability
Semi-graphite cathode block has good structural stability and can withstand thermal and mechanical stresses in the electrolyzer. It can maintain a stable shape and performance to ensure the continuous and stable operation of the electrolysis process.
Long life
Semi-graphite cathode blocks have a long service life due to their refractory properties and resistance to erosion. It can be replaced less frequently than other materials, reducing production downtime and maintenance costs.
Customizability
Semi-graphite cathode block can be customized according to specific aluminum electrolyzer designs and requirements. It can be adapted to different sizes and shapes of electrolytic cells, providing precise matching and installation.
Environmentally Friendly
Semi-graphite cathode blocks are free of hazardous substances, comply with environmental standards, and are energy and resource efficient in the aluminum electrolysis process.
Application
Aluminum Smelting Industry
Semi-graphite cathode blocks are widely used in aluminum electrolysis cells in the aluminum smelting industry. In the aluminum electrolysis process, the semi-graphite cathode block is used as part of the cathode, which is in contact with the aluminum melt and the electrolyte, and realizes the electrolysis reaction of the aluminum through the current conduction.
Aluminum Production
Aluminum is a widely used metallic material for the manufacture of aircraft, automobiles, building materials and packaging materials. The use of semi-graphite cathode blocks ensures the stability and efficiency of the aluminum electrolysis process and plays a key role in aluminum production.
Energy Savings
Aluminum electrolysis is an energy-intensive process. The application of semi-graphite cathode blocks improves the efficiency of the electrolyzer and reduces energy consumption. This is important for energy saving and environmental protection.
Power Industry
The conductivity of semi-graphite cathode block makes it also used in power industry. It can be used as electrode material for some special electrochemical reactions and battery manufacturing.
Chemical Industry
Semi-graphite cathode blocks have certain applications in the chemical industry due to their refractory properties and erosion resistance. It can be used in the lining of reactors and tanks for certain high temperature reactions to provide refractory protection.
Semi-graphite Cathode Block Specifications
| Item | Unit | Common Carbon Block | Semi-graphitic Cathode Block | ||||
|---|---|---|---|---|---|---|---|
| GS-1 | GS-3 | GS-5 | GS-10 | ||||
| Ash | % | ≤8 | ≤7 | ≤5 | ≤4 | ≤2 | |
| Electrical Resistivity | μΩm | ≤55 | ≤39 | ≤35 | ≤30 | ≤21 | |
| At Normal Temperature | |||||||
| Sodium (Na Expansion) | % | ≤1.5 | ≤1.0 | ≤0.6 | ≤0.5 | ≤0.5 | |
| Real Density | g/cm3 | ≥1.88 | ≥1.91 | ≥1.95 | ≥2.01 | ≥2.08 | |
| Bulk Density | g/cm3 | ≥1.54 | ≥1.56 | ≥1.57 | ≥1.57 | ≥1.59 | |
| Compressive Strength | MPa | ≥32 | ≥32 | ≥24 | ≥24 | ≥26 | |
| Flexual Strength | MPa | _ | ≥10 | ≥7.0 | ≥7.0 | ≥7.5 | |
| Thermal Conductivity | 30℃ | W/(m·K) | _ | – | ≥12 | ≥15 | ≥20 |
| 600℃ | _ | – | ≥14 | ≥20 | ≥30 | ||
| Linear Thermal Expansion | ×10-6/℃（300℃） | _ | ≤4.2 | ≤4.0 | ≤4 | ≤4 |
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