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Shaanxi CHENGDA Industry Furnace MAKE Co., Ltd.

  • China ,Shaanxi
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China Aluminum Ash Treatment Equipment with 1550-1650℃ Melting Temperature, 750-850kWh
China Aluminum Ash Treatment Equipment with 1550-1650℃ Melting Temperature, 750-850kWh

  1. China Aluminum Ash Treatment Equipment with 1550-1650℃ Melting Temperature, 750-850kWh

Aluminum Ash Treatment Equipment with 1550-1650℃ Melting Temperature, 750-850kWh

  1. MOQ: 1 unit
  2. Price: The price will be negotiated based on the technical requirements and supply scope of Party A
  3. Get Latest Price
Payment Terms L/C,T/T,Western Union
Supply Ability Complete production supply chain, supply on time, and meet quality standards
Delivery Time 2 months
Packaging Details Discuss according to the specific requirements of Party A
Brand Name Shaanxi Chengda
Model Number Negotiate based on equipment processing capacity
Certification ISO 9001
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms L/C,T/T,Western Union Supply Ability Complete production supply chain, supply on time, and meet quality standards
Delivery Time 2 months Packaging Details Discuss according to the specific requirements of Party A
Brand Name Shaanxi Chengda Model Number Negotiate based on equipment processing capacity
Certification ISO 9001 Place of Origin China

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

Company Details

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,

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 from Quality China Factory
  • Business Type:

    Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller

  • Year Established:

    2003

  • Total Annual:

    10millionUSD-10million

  • Employee Number:

    >139

  • Ecer Certification:

    Verified Supplier

  Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall...   Shaanxi Chengda Industrial Furnace Manufacturing Co., Ltd. is a high-tech enterprise specialized in the research, design, and manufacturing of various industrial furnaces, including AC and DC steelmaking electric arc furnaces, ladle refining furnaces, ferroalloy ore thermal furnaces, ferroall...

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  • Shaanxi CHENGDA Industry Furnace MAKE Co., Ltd.
  • Room 1201, Greenland Blue Ocean Building, Zhanba Yi Road, Yanta District, Xi'an City, Shaanxi Province, China
  • https://www.sxcd-furnace.com/

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