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Syed Rashid Ahmed ButtShaanxi Chengda Industrial Furnace Co., Ltd. completed the commissioning of electric arc furnace, the workers carefully cooperated with Chengda engineers to learn and operate the equipment, showing the deep friendship and excellent cooperation between the people of China and Pakistan. -
AboubacarAfter more than 1 month of intense production and debugging, 2 sets of heat exchange flue gas settling chamber equipment has been successfully put into operation ~ All the personnel involved in the project have worked hard! ~ -
Ji-hwan【 Warm congratulations 】 Shaanxi Chengda Industrial Furnace Manufacturing Company in South Korea, North Chungcheong County precious metal smelting furnace equipment installation and careful manufacturing and strict commissioning, looking forward to the future in more fields to achieve mutually beneficial win-win cooperation!
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Phone Number :
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DC Furnace for Vanadium Iron Slag Treatment
| Place of Origin | China |
|---|---|
| Brand Name | Shaanxi Chengda |
| Certification | ISO 9001 |
| Model Number | Negotiate based on equipment processing capacity |
| Minimum Order Quantity | 1 unit |
| Price | The price will be negotiated based on the technical requirements and supply scope of Party A |
| Packaging Details | Discuss according to the specific requirements of Party A |
| Delivery Time | 2 months |
| Payment Terms | L/C,D/P,T/T,Western Union |
| Supply Ability | Complete production supply chain, supply on time, and meet quality standards |
Product Details
| Specification | Customizable | Cooling Mode | Strong Oil-water Cooling Mode |
|---|---|---|---|
| Installation Method | Easy To Cut And Shape | Product Production Area | Shaanxi, China |
| Sourceland | Shaanxi, China | Delivery Standard | New |
| Automationlevel | Semi-automatic / Fully Automatic | Shipping Standard | New |
| Terms Of Delivery | New | Provenance | Shaanxi, China |
| Warranty Period | 1year | Devicename | Solid Waste Residue |
| Specification And Price | Negotiable | Country Of Origin | China |
| Highlight | DC furnace for vanadium slag,hazardous waste treatment furnace,vanadium iron slag DC furnace |
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Product Description
DC Furnace for Vanadium Iron Slag Treatment
DC furnace for vanadium iron slag treatment (mostly DC arc furnace / DC submerged arc furnace) is the core equipment for vanadium-iron alloy smelting, vanadium-titanium magnetite smelting and resource utilization of vanadium iron slag. Using DC electric arc as the heat source, it realizes deep reduction of vanadium iron slag, efficient separation of slag and iron, and high-efficiency recovery of valuable metals (vanadium, iron) at a high temperature of 1500–1700℃, which is the mainstream technical route for resource utilization of vanadium slag at present.
I. Core Principle
- Heat Source Mechanism: Adopting DC arc discharge, a stable, directional and high-energy-density plasma arc column is formed between the graphite electrode (cathode) and the furnace bottom anode, with a temperature reaching 1500–1700℃, featuring concentrated energy and high thermal efficiency.
- Treatment Process:
- Vanadium iron slag is completely melted at high temperature, with reductant (carbonaceous material) and flux (lime) added to achieve deep reduction of vanadium and iron oxides.
- The reduced vanadium-iron alloy sinks to the furnace bottom due to high density, while vanadium-rich slag / titanium slag floats on the upper layer, realizing efficient separation of slag and iron.
- The recovery rate of valuable metals (vanadium, iron) is high, and the tailings can be further used for vanadium extraction or as building materials for resource utilization.
II. Equipment Structure (Typical Configuration)
- Furnace Body: Refractory lining of magnesia-carbon / alumina-magnesia material resistant to high temperature and erosion, equipped with water cooling system and intelligent temperature control.
- Electrode System: DC graphite electrodes (hollow / solid), adjustable up and down to ensure stable arc and low loss; the furnace bottom is used as conductive anode.
- Power Supply System: Rectifier transformer + DC power supply to provide stable DC current, with a high power factor (up to 0.95–0.98).
- Feeding / Tapping / Deslagging: Continuous / semi-continuous feeding; alloy and molten slag are discharged intermittently through special tapping hole and deslagging hole respectively.
- Flue Gas Purification: Secondary combustion of high-temperature flue gas (mainly CO) + waste heat recovery + dust removal and desulfurization to meet emission standards and recover energy.
III. Process Flow (Vanadium Iron Slag Treatment)
- Pretreatment: Vanadium iron slag + reductant (anthracite / coke) + flux (lime) → mixing → agglomeration (pellets / blocks).
- Feeding: Quantitative feeding into the DC furnace.
- Reduction Smelting: At a high temperature of 1500–1700℃, vanadium and iron oxides are reduced to metals by carbon to form vanadium-iron alloy; impurities such as titanium enter the slag phase.
- Slag-Iron Separation: Alloy sinks to the bottom and molten slag floats up, with iron tapping and deslagging conducted separately.
- Product Treatment:
- Vanadium-iron alloy: Cooled and crushed for sale as metallurgical raw material.
- Vanadium-rich slag: Further used to extract vanadium pentoxide (V₂O₅); or utilized as cement admixture, road base material, etc.
- Flue Gas Treatment: CO combustion for waste heat recovery, flue gas purified to meet emission standards.
IV. Technical Advantages (vs. Traditional Processes)
| Comparison Items | DC Furnace for Vanadium Iron Slag | Traditional AC Arc Furnace / Converter |
|---|---|---|
| Heat Source Characteristics | DC arc, directional and high energy density | AC arc, prone to arc deflection and scattered energy |
| Thermal Efficiency | High (≥85%), low power consumption per ton of slag | Relatively low, high power consumption |
| Metal Recovery Rate | Vanadium recovery rate over 85%, iron recovery rate over 98% | Relatively low recovery rate |
| Electrode Consumption | Low (over 30% lower than AC furnace) | High |
| Impact on Power Grid | High power factor, no harmonic interference | Large harmonics, requiring reactive power compensation |
| Environmental Performance | Flue gas recyclable for energy, low secondary pollution | High energy consumption, complex flue gas treatment |
| Adaptability | Suitable for low-grade vanadium slag and solid waste with complex components | High requirements for raw materials |
V. Typical Applications and Cases
- Core Applications: Reduction, vanadium extraction, iron extraction and resource utilization of vanadium-iron alloy smelting slag, vanadium-titanium magnetite smelting slag and low-grade vanadium slag.
- Representative Cases: 3000KVA / 1500KVA DC furnaces for vanadium iron slag treatment customized by industrial furnace manufacturers, which have been put into production and operation, realizing efficient resource utilization of vanadium iron slag with qualified vanadium and iron recovery rates.
- Recycled Products: Vanadium-iron alloy, vanadium pentoxide, cement admixture, road base material, glass-ceramics, etc.
VI. Key Parameters (For Reference)
- Operating temperature: 1500–1700℃
- Furnace capacity: Commonly 1000–5000KVA (e.g. 3000KVA)
- Processing capacity: 30–50 tons of vanadium iron slag per day for 3000KVA model
- Electrode: Graphite electrode (φ300–600mm)
- Operating voltage: 100–300V
- Power factor: 0.95–0.98
- Vanadium recovery rate: ≥85%; Iron recovery rate: ≥98%
VII. Summary
DC furnace for vanadium iron slag treatment is ideal equipment for realizing reduction, harmlessness and high-value utilization of vanadium iron slag, especially suitable for vanadium-titanium industry and metallurgical solid waste resource utilization scenarios. Its core value lies in: efficiently recovering valuable metals such as vanadium and iron, while converting tailings into usable resources, significantly improving economic benefits and environmental performance.
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