Copper Slag Treatment Electric Furnace EquipmentHigh-Temperature Depletion · Cu-Fe Enrichment · Hot Slag Direct
Feed · Low Energy & Eco-Friendly · Intelligent Operation The copper slag treatment electric furnace (also known as copper slag depletion arc furnace / copper slag reduction furnace) is the core thermal equipment for copper smelting slag resource utilization, specifically designed for flash furnace slag, converter slag, and refining slag. Through high-temperature melting, reduction, and clarification at
1250–1500℃, valuable metals such as copper, iron, zinc, gold, and silver in the slag are efficiently enriched and recovered. The tailings
are directly granulated for building materials, realizing zero solid waste discharge and high-value metal utilization. Ideal for: Copper smelters, non-ferrous slag processing, hazardous waste
recycling, secondary metals and more. 1. Equipment Composition (Furnace Body + Auxiliary Systems)1.1 Furnace Body (Core)- Furnace Type: Three-phase sealed arc furnace / circular/rectangular depletion
furnace; direct hot slag feed for significant energy savings.
- Shell: 16–30mm thick steel plate with stiffeners for high rigidity and
deformation resistance.
- Lining: High-alumina bricks + carbon bricks + refractory castable, refractoriness ≥1550℃, excellent slag corrosion and thermal shock
resistance, service life ≥18 months.
- Roof: Fully sealed water-cooled roof with central electrode holes + temperature/feeding ports to
prevent flue gas leakage and meet environmental standards.
- Tapping Openings: Water-cooled + refractory lining; upper lean slag outlet, lower Cu-Fe alloy outlet; tapping temperature 1300–1450℃.
1.2 Electrode System- Electrodes: High-purity graphite electrodes, φ350–600mm, good conductivity, high temperature resistance, low consumption.
- Cross Arm: Water-cooled copper alloy, high current capacity, low impedance,
stable power supply.
- Lifting: PLC fully automatic closed-loop control for precise arc length and temperature regulation, fast response,
small fluctuation.
1.3 Power Supply & Electrical System- Transformer: 4000–25000kVA, multi-voltage gears (200–500V) for
melting/reduction/clarification stages.
- Rated Current: 10000–40000A, low short-network impedance, high thermal
efficiency.
- Control Cabinet: PLC + touch screen, integrating temperature control, power regulation, electrode slipping, fault
alarm, data traceability, fully automatic operation.
1.4 Hot Slag Feeding / Pretreatment (Optional)- Hot Slag Launder: 30–45° inclination, corundum ceramic lining; 1200–1400℃ hot slag direct feed eliminates cold slag reheating, saves 60%+ power.
- Cold Slag Crushing & Screening: Jaw crusher + vibrating screen, feed ≤300mm, discharge 5–25mm,
capacity 30–150t/h.
1.5 Environmental Protection & Auxiliaries- Water Cooling: Forced cooling for shell, roof and cross arm; surface temperature
≤35℃, safe and reliable.
- Flue Gas Treatment: Sealed + baghouse dust removal + waste heat recovery; dust
emission ≤10mg/m³, CO in flue gas recyclable.
- Hydraulic Tilting (Optional): Tilting angle 0–45°, easy for slag removal, cleaning and
maintenance.
2. Main Technical Parameters (Standard Models, Customizable)2.1 Processing Capacity- Raw Material Form: Hot liquid slag (1200–1400℃) / cold water-quenched slag
- Capacity: 15–80t/h (360–1920t/d)
- Power Consumption per Ton: ≤380kWh/t (hot slag feed)
2.2 Smelting Indicators- Working Temperature: 1250–1500℃ (peak 1550℃)
- Copper Recovery Rate: ≥88% (total ≥93%)
- Iron Recovery Rate: ≥95% (Fe alloy grade ≥65%)
- Zn/Au/Ag: Comprehensive recovery ≥82%
- Products: Cu-Fe alloy (Cu≥15%) / blister copper / high-grade matte
2.3 Furnace Body Parameters- Hearth Size: φ3000–5500mm × H3500–6000mm (circular)
- Transformer Capacity: 4000/8000/12000/20000kVA
- Electrode Diameter: 350/400/500/600mm
- Electrode Stroke: 1200–1800mm
- Control Mode: Fully automatic PLC + manual dual mode
2.4 Tailings Indicators- Lean Slag Cu Content: ≤0.3%
- Tailings Utilization Rate: 100% (water-quenched for building aggregates/glass-ceramics)
3. Core Advantages- Hot Slag Direct Feed, Extreme Energy Saving: 1200–1400℃ hot slag fed directly, eliminating cold slag
reheating, 60%+ power savings, low operating cost.
- High-Efficiency Depletion, High-Value Recovery: High-temperature reduction + clarification, Cu≥88%, Fe≥95% recovery, by-product Cu-Fe alloy, significant economic benefits.
- Sealed & Eco-Friendly, Safe & Stable: Fully sealed + high-efficiency dust removal, no leakage, low
emission; intelligent monitoring + safety interlock, reliable
long-term continuous operation.
- Durable Lining, Easy Maintenance: High-quality refractories + optimized design, lining life ≥18
months; modular structure, fast inspection, less downtime.
- High Customization & Wide Adaptability: Customized by slag composition, capacity and environmental
requirements, suitable for small to large copper smelting lines.
4. Application Fields- Copper Smelters: Depletion of flash furnace, converter and refining
slag
- Non-Ferrous Metallurgy: Valuable metal enrichment from lead-zinc,
nickel and tin slag
- Hazardous Waste Disposal: Reduction, harmless treatment and
recycling of industrial solid waste
- Building Materials: Water-quenched tailings for aggregates,
glass-ceramics and road base materials
5. Models & Services- Standard Models: 15t/h / 30t/h / 50t/h / 80t/h Copper Slag Treatment Electric
Furnace
- Customization: Hearth size, transformer capacity, automation level,
environmental accessories
- Turnkey Service: Design, manufacturing, installation & commissioning,
training, after-sales support
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