Brown Fused Alumina Furnace
Price:
The price will be negotiated based on the technical requirements and supply scope of Party A
MOQ:
1 unit
Delivery Time:
2 months
Brand:
Shaanxi Chengda
Product Description
Equipment Introduction and Technical Parameters
1. Equipment Introduction
The brown fused alumina furnace is a three-phase AC tilting electric arc furnace. It takes bauxite, coke (anthracite) and iron filings as raw materials, and performs reduction and melting at a high temperature above 2000℃ to produce brown fused alumina (main component Al₂O₃ ≥ 94.5%).
Mainstream model: 7500KVA, melting capacity 10–25 tons, furnace shell inner diameter 3000–3600mm.
Purpose
It is used for smelting brown fused alumina and high-alumina fused alumina abrasives and refractory materials. The products are widely applied in abrasive tools manufacturing, glass kiln refractory lining, metallurgical nozzles and wear-resistant parts.
Structural Features
- Furnace body: Welded steel plate structure with dry composite insulation lining, thin-shell tilting design, heavy load and high temperature resistance.
- Furnace roof: Water-cooled low smoke hood, equipped with electrode holes, feeding holes and smoke exhaust holes.
- Discharging: Hydraulic tilting type, maximum forward tilting angle 45°, adopting continuous pouring process with low energy consumption and good crystal quality.
- Cooling system: External spray cooling for furnace body + water cooling for furnace roof and cross arm, with pressure and temperature alarm function.
Main Components
- Furnace Body: Welded steel shell, discharge spout, thermal insulation lining and external spray cooling system.
- Electrode Lifting System: Hydraulic / frequency conversion drive with PLC automatic adjustment, fast response and stable control; equipped with HP high-power graphite electrodes.
- Short Network System: Water-cooled cables and steel-copper composite cross arm, with low and balanced three-phase impedance.
- Hydraulic System: Working pressure 12–16MPa, used for furnace body tilting and electrode clamping.
- Feeding System: Top / side feeding mode, matched with batching bin and conveying equipment.
- Control System: PLC + industrial computer, real-time monitoring of voltage, current, temperature and cooling parameters.
Working Principle
Three graphite electrodes generate electric arc after power-on. The ultra-high temperature above 2000℃ melts the mixed raw materials of bauxite, coke and iron filings. Reduction reaction removes impurities such as silicon, iron and titanium to form brown fused alumina molten liquid with Al₂O₃ ≥ 95%.
The molten liquid is poured, cooled, crushed and magnetic separated to obtain finished products.
2. Main Technical Parameters (Mainstream 7500KVA Tilting Furnace)
| Parameter | Specification |
|---|---|
| Rated Melting Capacity | 10–25 tons per furnace |
| Furnace Shell Inner Diameter | 3000 / 3300 / 3600 mm |
| Furnace Shell Depth | 1800–2200 mm |
| Electrode Diameter | 500–600 mm (HP High Power) |
| Electrode Lifting Speed | Rising: 2.5 m/min; Descending: 2.0 m/min |
| Transformer Rated Capacity | 7500KVA / 5000KVA / 6300KVA / 10000KVA |
| Primary Voltage | 10KV / 35KV |
| Secondary Voltage | 120–240V (No-load Electric Regulation) |
| Working Temperature | 2000–2250℃ |
| Power Consumption | 1800–2200 KWh per ton of finished product |
| Cooling Mode | Furnace body spray cooling + forced water cooling for roof & cross arm |
| Maximum Discharging Tilt Angle | Forward 45° (Hydraulic Tilting) |
| Power Supply | 3-phase, 50Hz, 10/35KV |
| Control Mode | PLC automatic control + industrial computer monitoring |
3. Brown Fused Alumina Product Performance Index
| Composition & Performance | Standard Value |
|---|---|
| Al₂O₃ Content | 94.5–97% |
| TiO₂ Content | 1.5–3.8% |
| Fe₂O₃ Content | ≤0.25% |
| SiO₂ Content | ≤1.0% |
| Melting Point | Approx. 2050℃ |
| Bulk Density | ≥3.90 g/cm³ |
| Mohs Hardness | ≥9.0 |
| Micro Hardness | HV 1800–2200 |
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Company
Shaanxi CHENGDA Industry Furnace MAKE Co., Ltd.
Location
Room 1201, Greenland Blue Ocean Building, Zhanba Yi Road, Yanta District, Xi'an City, Shaanxi Province, China
Contact Person
Du