Side Blown Furnace Equipment and Technical Parameters
1. Equipment Overview
Side blown furnace is a vertical smelting reactor with horizontal side tuyeres for high-pressure oxygen-enriched air injection, widely applied in vanadium slag melting, ferroalloy smelting, non-ferrous metal matte converting and hazardous solid waste treatment.
High-speed oxidizing/reducing gas blown from side nozzles forms strong agitation inside the molten bath, featuring fast reaction speed, high raw material utilization, compact layout and low investment. It can be matched with continuous feeding, waste heat recovery and full flue gas purification systems.
2. Complete Equipment System Composition
2.1 Furnace Body Main Unit
- Furnace Shell
All-welded cylindrical steel shell with integral water jacket structure; slag line, tuyere zone and furnace arch adopt thickened water cooling to resist high temperature erosion and thermal shock. Temperature and water leakage sensors are arranged along the shell.
- Refractory Lining
- Tuyere zone: high wear-resistant chrome-magnesia brick / magnesia-chrome spinel brick
- Molten bath & slag zone: fused magnesia brick
- Furnace top: high alumina castable + heat insulation layer
- Side Tuyere Assembly (Core Component)
Horizontal multi-layer side blowing tuyeres, double-layer water-cooled copper composite structure.
Oxygen-enriched air, fuel gas, cooling medium are separately conveyed through internal channels; each tuyere is equipped with independent flow, pressure and temperature monitoring interlock.
- Tap Holes & Slag Ports
Metal tapping hole and slag tapping hole arranged at different elevation positions; hydraulic tapping opening/closing machine, mud gun for blocking tap holes.
- Furnace Top & Flue Outlet
Water-cooled furnace roof with feeding port, spare manhole and main flue gas outlet connected to waste heat boiler.
2.2 Air Supply & Oxygen Blending System
- Air Blower Unit
High-pressure centrifugal blower, frequency conversion speed regulation, pressure adjustable 0.12–0.35 MPa.
- Oxygen Mixing Station
Liquid oxygen storage tank, vaporizer, pressure regulating valve group, online oxygen content analyzer; realize adjustable oxygen enrichment ratio 22%–55%.
- Branch Pipe Distribution Network
Stainless steel air distribution manifold for each tuyere, independent flow control valve, anti-backfire safety cut-off valve, pressure relief device.
2.3 Feeding System
- Raw material silos, quantitative screw feeders / belt weighing feeders (weighing accuracy ±0.3%~±0.5%)
- Sealed feeding chute to prevent flue gas escape and dust leakage
- Optional auxiliary fuel feeding device (coal powder, natural gas) for temperature compensation
2.4 Cooling Circulation System
- Closed soft water circulation system for furnace water jacket and tuyeres
- Industrial circulating cooling water for auxiliary equipment
- Online monitoring of water inlet/outlet temperature, flow and pressure; automatic alarm and interlock shutdown under abnormal conditions
2.5 Hydraulic & Tapping Equipment
Hydraulic station for tapping machine, slag door push rod, furnace cover lifting; constant pressure variable pump, oil temperature cooling and filtration system.
2.6 Waste Heat & Flue Gas Treatment System
- Waste heat boiler: recover high-temperature flue gas heat to produce steam for power generation or production heating
- Flue gas cooling + bag dust collector: dust removal efficiency ≥99.8%
- Desulfurization & denitrification device to meet environmental emission standards
2.7 Automatic Control System
PLC + industrial touch screen DCS integrated control:
- Automatic linkage of feeding, oxygen blowing, air supply and temperature regulation
- Real-time monitoring of tuyere pressure, oxygen concentration, molten pool temperature, cooling water parameters
- Automatic tapping timing, historical data storage, fault alarm record, production report export
3. Typical Standard Technical Parameters
3.1 Furnace Body Main Parameters
| Parameter Item |
5m³ Side Blown Furnace |
10m³ Side Blown Furnace |
20m³ Side Blown Furnace |
| Effective Furnace Volume |
5 m³ |
10 m³ |
20 m³ |
| Furnace Shell Inner Diameter |
Φ1800 mm |
Φ2400 mm |
Φ3000 mm |
| Effective Molten Bath Height |
1200 mm |
1500 mm |
1800 mm |
| Number of Side Tuyeres |
8–12 pcs |
16–20 pcs |
24–30 pcs |
| Single Tuyere Air Flow |
80–120 Nm³/h |
120–180 Nm³/h |
180–260 Nm³/h |
| Design Operating Temperature |
1450–1750 ℃ |
1450–1750 ℃ |
1450–1750 ℃ |
| Furnace Water Jacket Cooling Water Flow |
25 m³/h |
42 m³/h |
68 m³/h |
| Single Batch Processing Capacity |
3–5 t |
6–10 t |
12–20 t |
| Single Furnace Cycle Time |
40–60 min |
45–65 min |
50–70 min |
3.2 Oxygen & Air Supply Parameters
| Parameter Item |
Index |
| Blower Rated Air Pressure |
0.12–0.35 MPa |
| Adjustable Oxygen Enrichment Range |
22% ~ 55% |
| Tuyere Outlet Gas Velocity |
180–260 m/s |
| Oxygen Supply Pressure |
0.20–0.40 MPa |
| Total Air-Oxygen Mixing Flow (20m³ furnace) |
4000–6500 Nm³/h |
3.3 Process Operation Index
- Reaction Characteristics
Strong molten bath agitation by side high-speed jet; oxidation/ reduction reaction completed within 15–30 min.
- Energy Consumption
Comprehensive power consumption: 180–260 kWh/t raw material; auxiliary fuel consumption adjustable according to material heat value.
- Recovery Rate
Metal recovery rate ≥96.5% for vanadium slag oxidation; high separation efficiency of slag and molten metal.
- Refractory Service Life
Tuyere zone lining: 6–10 months; furnace wall slag zone lining: 10–14 months.
4. Core Technical Advantages
- Intense Molten Pool Stirring
Horizontal high-speed oxygen-enriched jet penetrates the molten bath, eliminates dead reaction zones, greatly accelerates oxidation and reduction reaction rates.
- Wide Raw Material Adaptability
Can treat vanadium slag, low-grade ore, ferroalloy intermediate material, smelting waste residue and various solid hazardous wastes.
- Low Energy Consumption & High Heat Utilization
Side blowing improves heat transfer efficiency; matched waste heat boiler realizes waste heat recovery to reduce comprehensive energy cost.
- Compact Structure & Flexible Operation
Small floor area, short construction cycle; oxygen enrichment, feeding speed and blowing strength can be dynamically adjusted according to material conditions.
- Good Environmental Performance
Sealed feeding and closed flue gas collection, low dust leakage; supporting complete flue gas purification to meet ultra-low emission standards.
5. Main Application Fields
- Oxidation roasting of vanadium slag for vanadium extraction
- Matte converting of copper, nickel and other non-ferrous metals
- Production of medium/low-grade ferroalloys
- Harmless and resourceful treatment of metallurgical solid waste, hazardous waste
Shaanxi CHENGDA Industry Furnace MAKE Co., Ltd.
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, ferroalloy refining furnaces,
electric slag remelting furnaces, non-standard metallurgical
equipment, heat treatment equipment, and various related
environmental protection dust removal equipment. The company's
product design and manufacturing capabilities have reached 100 tons
for electric arc furnaces, 160 tons for ladle refining furnaces,
and a capacity range of 3600KVA to 35000KVA for ore thermal
furnaces. In accordance with national industrial policies, we have
designed high and low voltage compensation systems, dust removal
systems, ferroalloy DC furnaces, and new energy equipment suitable
for the actual operation of the equipment. For inquiries, please
contact Mr. Du at 13991381852 or Mr. Chen
13709182307.
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