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    Syed Rashid Ahmed Butt
    Shaanxi Chengda Industrial Furnace Co., Ltd. ha completato la messa in servizio del forno ad arco elettrico, i lavoratori hanno collaborato attentamente con gli ingegneri di Chengda per imparare e utilizzare l'attrezzatura,mostrando la profonda amicizia e l'eccellente cooperazione tra il popolo cinese e quello pakistano.
  • Shaanxi CHENGDA Industry Furnace MAKE Co., Ltd.
    Aboubacar
    Dopo più di un mese di intensa produzione e debug,Sono state messe in funzione con successo 2 serie di apparecchiature per le camere di sedimentazione dei gas di combustione con scambio termico ~ Tutto il personale coinvolto nel progetto ha lavorato sodo- Sì!
  • Shaanxi CHENGDA Industry Furnace MAKE Co., Ltd.
    Ji-hwan
    Congratulazioni calde alla Shaanxi Chengda Industrial Furnace Manufacturing Company in Corea del Sud.Contea di North Chungcheong installazione di attrezzature per il forno di fusione dei metalli preziosi e produzione attenta e messa in servizio rigorosa, in attesa del futuro in più campi per raggiungere una cooperazione reciprocamente vantaggiosa e vantaggiosa!
Persona di contatto : Du
Numero di telefono :  13991381852

Aluminum Ash Treatment Equipment with 1550-1650℃ Melting Temperature, 750-850kWh/t Power Consumption, and 60-160t Daily Treatment Capacity

  • Aluminum Ash Treatment Equipment with 1550-1650℃ Melting Temperature, 750-850kWh/t Power Consumption, and 60-160t Daily Treatment Capacity
Luogo di origine Cina
Marca Shaanxi Chengda
Certificazione ISO 9001
Numero di modello Negoziare in base alla capacità di elaborazione delle apparecchiature
Quantità di ordine minimo 1 unità
Prezzo The price will be negotiated based on the technical requirements and supply scope of Party A
Imballaggi particolari Discutere in base ai requisiti specifici della Parte A
Tempi di consegna 2 mesi
Termini di pagamento L/C,T/T,Western Union
Capacità di alimentazione Completare la catena di fornitura di produzione, fornire in tempo e soddisfare gli standard di quali
Dettagli
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Descrizione di prodotto

Introduction to Equipment and Parameters


I. Process Principle


Using aluminum ash (containing Al₂O₃, metallic Al, AlN and a small amount of salts) and CaO (lime) as raw materials, solid-phase/liquid-phase reactions occur in an electric furnace at high temperature of 1550–1650℃:

  • Main reaction: 3CaO + Al₂O₃ → 3CaO·Al₂O₃ (calcium aluminate)
  • Side reactions: Oxidation/reduction conversion of AlN and metallic Al; volatilization and removal of salts
  • Product: Pre-melted calcium aluminate (steelmaking refining slag, deoxidizer/desulfurizer)

II. Core Equipment Composition (Complete Production Line)


1. Pretreatment System


  • Crushing and Screening Machine: Crushes aluminum ash to ≤50mm, removes iron and impurities
  • Batching Station: Automatic metering of aluminum ash, CaO, reducing agent (coke) and modifier (MgO)
    • Ratio: Aluminum ash 40–65%, CaO 35–45%, MgO 0–15%

  • Mixer/Briquetting Machine: Mixes materials evenly; briquetting is available to increase melting speed

2. Core Equipment: Calcium Aluminate DC Electric Arc Furnace


Structure

  • Furnace body: Round/square, steel shell + composite refractory lining (corundum-mullite/magnesia-chrome brick)
  • Electrode: Graphite electrode (double/three electrodes)
  • Power supply: DC rectifier power supply (1000–10000kVA)
  • Furnace tilting mechanism: Hydraulic tilting (for slag discharge)
  • Cooling system: Water cooling for furnace shell and electrode chuck
  • Flue gas system: Purification of high-temperature flue gas, fluoride and salt mist

Main Models and Parameters (DC Furnace)


Parameter Typical Value (3000kVA / 6300kVA)
Transformer Capacity 3000kVA / 6300kVA
Operating Voltage 150–300V
Operating Current 8–15kA / 15–25kA
Melting Temperature 1550–1650℃
Melting Cycle 45–60min/heat
Daily Aluminum Ash Treatment Capacity 60–80t / 120–160t
Power Consumption 750–850kWh/t product
Electrode Consumption 3–5kg/t (40% lower for DC than AC)
Lining Service Life 300–500 heats

Technical Advantages (DC vs AC)

  • Electrode consumption reduced by 40%
  • No reactive power compensation required, lower investment
  • Noise reduced by 10–20dB
  • Strong electromagnetic stirring, uniform composition and fast melting speed
  • Insulating shell easily formed in case of power failure, protecting furnace lining

3. Post-treatment System


  • Slag Discharge/Cooling: Tapping of hot slag → water quenching/air cooling → crushing
  • Crushing and Screening Line: Jaw crusher + roller crusher + vibrating screen
    • Finished particle size: 1–10mm, 10–50mm (for steelmaking)
    • Overscreened powder returned to furnace for remelting

  • Storage and Packaging: Finished product silo, automatic packaging (25/50kg/bulk bag)

4. Environmental Protection Supporting Facilities


  • Flue Gas Purification:
    • Quench tower (temperature controlled below 200℃)
    • Bag filter (fluoride adsorption)
    • Alkaline washing tower (removal of HCl, F⁻ and salt mist)

  • Wastewater: Cooling circulating water + small amount of acid-base neutralization
  • Solid Waste: Almost no secondary waste residue (full conversion)

III. Product: Calcium Aluminate (Finished Product Indexes)


  • Main phases: 3CaO·Al₂O₃, 12CaO·7Al₂O₃
  • Typical composition (wt%):
    • Al₂O₃: 55–65%
    • CaO: 30–40%
    • MgO: 2–5%
    • SiO₂: ＜3%
    • F⁻, S, P: ＜0.1%

  • Application: Pre-melted refining slag for steelmaking, high-efficiency desulfurizer, deoxidizer

IV. Technical Features


  • Resource utilization: Turns aluminum ash into treasure, Al₂O₃ utilization rate >90%
  • Harmless treatment: Decomposition of AlN, removal of salts, solidification of heavy metals
  • High efficiency: Short single-heat cycle, high continuity and automation
  • Low consumption: Significantly lower power and electrode consumption of DC furnace than traditional processes

V. Selection Suggestions


  • Small-scale line: 1250–3000kVA DC furnace, daily treatment capacity 30–80t aluminum ash
  • Medium-scale line: 3000–6300kVA DC furnace, daily treatment capacity 80–160t aluminum ash
  • Large-scale line: 6300–10000kVA DC furnace, daily treatment capacity 160–300t+ aluminum ash
Etichette:

forno a corrente continua

forno elettrico

fonderia di metalli