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The Cold Slag Rock Wool Electric Furnace is the core melting equipment for rock wool/slag wool production lines. It uses electric energy as the heat source to melt raw materials such as basalt, slag, and fly ash at a high temperature of 1450–1550℃. It precisely controls the temperature and flow rate of the melt, providing stable molten slurry for the centrifuge and ensuring the production of high-quality rock wool. It is an energy-saving, environmentally friendly and efficient alternative to traditional cupola furnaces, widely used in high-end thermal insulation, fire prevention and sound insulation rock wool production.
Core Advantages (vs. Traditional Cupola Furnace)
Energy Conservation & Environmental Protection: Electric heating replaces coke, reducing energy consumption per ton of products by more than 40%, with no SO₂/NOₓ emissions and easy dust control.
High Efficiency & Stability: Melting efficiency is doubled, temperature control accuracy is ±10℃, and the fiber forming quality is better.
Flexible Adaptability: Raw material ratio can be adjusted to adapt to the production of high-end rock wool with high acidity coefficient and high temperature resistance.
Intelligent & Controllable: DCS system realizes precise temperature control and continuous slag discharge, ensuring strong production stability.
Typical Technical Parameters (For Reference)
Parameter Items
Specifications
Operating Temperature
1450–1550℃
Furnace Capacity
Commonly 3000–10000KVA (e.g., 7500KVA)
Hourly Output
5–6 tons/hour
Power Consumption per Ton of Product
~1200kWh
Power Factor
≥0.95
Temperature Control Accuracy
±10℃
Equipment Composition
Raw material drying/batching/feeding system
Water-cooled electric furnace body (resistance/arc heating)
High-voltage power supply and intelligent control system (DCS)
Melt heat preservation and flow control device
Circulating water cooling and flue gas purification system
Application Scenarios
Resource utilization of basalt rock wool, slag wool, and solid waste (fly ash/furnace slag) to produce wool
Production of high-end thermal insulation, fire prevention, and sound insulation rock wool
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...
