Description
Aluminum Ash Treatment Technology (Calcium Aluminate Electric Furnace)
Sustainable Aluminum Recycling Solutions by HANI Metallurgy
Transforming Waste into Value: Advanced Aluminum Ash Treatment
Aluminum Ash Treatment is a critical environmental and economic challenge for the global aluminum industry. Aluminum ash, a hazardous byproduct of primary and secondary aluminum production, contains metallic aluminum, alumina (Al2O3), and various impurities like chlorides and fluorides. Traditional disposal methods are not only environmentally damaging but also result in the loss of valuable resources. At HANI, we have developed a cutting-edge Calcium Aluminate Furnace technology that enables the complete resource utilization of aluminum ash. By melting aluminum ash and converting it into high-quality calcium aluminate, we provide a sustainable solution for aluminum recycling and ash processing, effectively turning industrial waste into a valuable steelmaking deoxidizer.
The core of HANI’s Aluminum Ash Treatment lies in the high-temperature smelting process. Our Calcium Aluminate Furnace uses advanced electric arc heating to extract residual metallic aluminum while reacting the remaining oxides with lime to form calcium aluminate. This aluminum recycling route not only achieves a high recovery rate of aluminum but also detoxifies the hazardous elements in the ash. As a leader in ash processing technology, HANI ensures that the entire process is fully enclosed and equipped with sophisticated gas cleaning systems, meeting the highest global environmental standards.
Technical Parameters of HANI Calcium Aluminate Furnace
| Model Feature | Unit | HANI-CAF3.6 | HANI-CAF6.3 | HANI-CAF9.0 | HANI-CAF12.5 |
|---|---|---|---|---|---|
| Transformer Capacity | MVA | 3.6 | 6.3 | 9.0 | 12.5 |
| Smelting Temperature | °C | 1500-1650 | 1500-1650 | 1500-1650 | 1500-1650 |
| Daily Processing Capacity | T/d | 30-50 | 60-100 | 90-150 | 120-200 |
| Power Consumption | kWh/t | 600-900 | 550-850 | 500-800 | 450-750 |
Chemical Process of Converting Ash to Calcium Aluminate
The production of calcium aluminate in a Calcium Aluminate Furnace is a thermochemical refining process. During Aluminum Ash Treatment, the aluminum ash (containing metallic Al, Al2O3, and salts) is mixed with high-purity lime (CaO). In the ash processing hearth, the high-temperature electric arc melts the mixture, allowing for the reaction between Al2O3 and CaO. This aluminum recycling route is highly efficient because it utilizes the inherent chemical energy of the ash to drive the formation of calcium aluminate phases.
Thermodynamic Reaction Mechanism:
1. nCaO + mAl2O3 → nCaO·mAl2O3 (Liquid Phase Formation)
2. 2Al (residue) + O2 → Al2O3 + Heat (Exothermic oxidation)
3. Target Phase: 12CaO·7Al2O3 (High solubility deoxidizer)
Scientific facts from HANI‘s engineering research show that the phase composition of the final product can be precisely controlled by adjusting the CaO/Al2O3 ratio in the Calcium Aluminate Furnace. A well-designed ash processing system ensures that the harmful halides are neutralized or captured in the exhaust gas cleaning system, making the Aluminum Ash Treatment both an environmental and economic success. The resulting calcium aluminate is an ideal deoxidizing agent for the steel industry, promoting efficient aluminum recycling.
Key Advantages of HANI Ash Treatment Technology
- Resource Recovery: Our Aluminum Ash Treatment extracts every bit of value from waste, recovering metallic aluminum and producing high-grade slag for aluminum recycling.
- Detoxification: The ash processing in our Calcium Aluminate Furnace converts toxic halides into inert substances, protecting human health and the environment.
- High Automation: HANI’s Aluminum Ash Treatment systems feature fully automated charging and temperature control, ensuring stable ash processing with minimal labor.
Professional FAQ for Calcium Aluminate Furnace
Q1: What types of aluminum ash can be treated in your equipment?
A: HANI’s Aluminum Ash Treatment technology is versatile and can process primary aluminum ash, secondary dross, and even salt cake from ash processing facilities.
Q2: What is the primary use of the calcium aluminate produced?
A: The calcium aluminate from our Calcium Aluminate Furnace is widely used as a deoxidizer and desulfurizer in the steelmaking industry, providing a high-value outlet for aluminum recycling.
Q3: How does HANI ensure environmental compliance in ash processing?
A: We integrate multi-stage scrubbers and baghouse filters into the Calcium Aluminate Furnace setup to capture all hazardous dust and gases during Aluminum Ash Treatment.
Step into Sustainable Aluminum Recycling with HANI
The Aluminum Ash Treatment industry is evolving. Partner with HANI for a world-class Calcium Aluminate Furnace solution that combines profitability with environmental responsibility.
