Mineral Wool, Rock Wool Furnace - AC Electric Arc Furnace(New)
Application of equipment:
This equipment is used to receive hot melt slag from ironmaking
blast furnace, through a small amount of tempering (adjusting the
mass of 10-15%), adjust the current and voltage to make the
temperature of the flow port is stable, and use the patented
equipment copper gate to control the flow of slag port, and
continuously transport to the centrifuge to prepare mineral wool.
By adjusting a small amount of mass (adjusting 10% of mass), the
current and voltage are adjusted to make the temperature of the
flow port stable, and the flow rate of the slag port is controlled
by the patented equipment copper gate, which is continuously
transmitted to the electric furnace equipment for preparing mineral
wool.
Process overview:
The slag bag containing industrial waste slag is transported to the
electric furnace workshop with a slag truck or rail car, poured
into the furnace, began to raise the temperature and adjust the
composition, and determined by temperature measurement and sampling
to meet the production requirements of mineral wool, and
transported to the centrifuge and subsequent mineral wool
production line to provide raw materials for the mineral wool
production line.
Main parameters and performance:
1 Furnace capacity ~ 50t
2 Shell diameter Φ5200 ~ Φ5600
3 Shell height ~ 3500 mm
4 Electrode diameter Φ400mm
5 Electrode pole circle Φ1350 ~ Φ1400mm
6 Maximum electrode stroke 1800 mm
7. Transformer rated capacity 4000 KVA
Performance index:
(1) Slag production capacity: ~ 5 tons/hour (annual output of more
than 30,000 tons)
(2) Slag temperature (mineral wool machine requirements) ~ 1500℃
(3) Original slag temperature ~ 1300℃ (to be measured)
(4) tons of cotton power consumption 350-500KWh/T;
3. Ton of cotton electrode consumption: 2.5-3.0Kg/t
The AC Electric Arc Furnace for Mineral Wool/Rock Wool Production
is a specialized melting equipment designed for the thermal
insulation material industry. It uses alternating current arc
discharge as the heat source to efficiently melt mineral raw
materials (such as basalt, diabase, dolomite) or industrial solid
wastes (such as metallurgical slag, tailings) at ultra-high
temperatures (1500-1700℃), providing high-quality molten material
for the subsequent production of mineral wool and rock wool. With
its advantages of high melting efficiency, stable operation, and
environmental friendliness, it has become a core production
equipment for mineral wool/rock wool manufacturers aiming to
achieve large-scale, low-carbon production.
This furnace is a professional AC electric arc melting device
optimized for mineral wool/rock wool production processes. It
adopts a three-phase AC power supply, generates high-temperature
arcs between graphite electrodes and raw materials through electric
discharge, and relies on the thermal effect of the arcs to melt
solid raw materials into uniform, low-viscosity molten slag. The
molten material is then sent to the centrifugal spinner or
fiberizing equipment to form mineral wool/rock wool fibers with
excellent thermal insulation, sound absorption, and fire resistance
properties.
- High-Temperature Melting: Quickly raises the temperature of raw materials to 1500-1700℃
through arc heating, ensuring complete melting of minerals and
industrial solid wastes, and eliminating impurities to improve the
purity of molten slag.
- Molten Slag Homogenization: Maintains stable furnace temperature and molten slag flow state
through intelligent temperature control and stirring, ensuring
uniform chemical composition and viscosity of molten material,
which is critical for fiber formation quality.
- Energy Conservation & Emission Reduction: Adopts high-efficiency electric heating technology with thermal
efficiency ≥75%, reducing energy consumption compared with
traditional fuel-fired furnaces; equipped with flue gas
purification systems to meet international environmental standards.
- Continuous Production Support: Features a large-capacity furnace body and automatic
feeding/discharging system, enabling 24/7 continuous operation to
match the large-scale production needs of mineral wool/rock wool.
- Waste Resource Utilization: Realizes the recycling of industrial solid wastes (metallurgical
slag, tailings) as raw materials, reducing resource waste and
environmental pressure, in line with circular economy development
trends.
- Feeding Stage: Raw materials (basalt, metallurgical slag, etc.) are crushed and
screened to a particle size of 5-30mm, then transported to the
furnace body through the automatic feeding system.
- Arc Ignition & Heating Stage: The power supply system outputs low-voltage, high-current
electricity to the graphite electrodes; arcs are generated between
the electrode tips and raw materials, releasing a large amount of
heat to melt the raw materials.
- Molten Slag Homogenization Stage: The molten slag is stirred by the electromagnetic force of the
arc and the natural convection of the liquid, ensuring uniform
temperature and chemical composition; the temperature control
system maintains the molten slag at 1550-1650℃ (adjustable
according to raw material characteristics).
- Discharging Stage: The molten slag flows out through the tapping port or overflow
port at a stable speed, and is sent to the centrifugal spinner or
fiberizing equipment for subsequent fiber formation.
- Flue Gas Treatment Stage: High-temperature flue gas is cooled by a heat exchanger
(recovering waste heat for heating or power generation), then
purified by dust collectors and desulfurization devices before
reaching emission standards.
- High Melting Efficiency: Arc heating directly acts on raw materials, with fast temperature
rise and short melting cycle (15-30 minutes per batch),
significantly improving production efficiency.
- Stable Fiber Formation Quality: Precise temperature control ensures uniform viscosity of molten
slag, reducing fiber breakage and improving the tensile strength
and thermal insulation performance of mineral wool/rock wool.
- Energy-Saving & Environmental Protection: Electric heating avoids smoke and harmful gas emissions from fuel
combustion; the flue gas treatment system achieves near-zero
pollutant emissions, meeting strict environmental requirements in
Europe, North America, and other regions.
- Strong Raw Material Adaptability: Suitable for various raw materials such as basalt, diabase,
metallurgical slag, and tailings; can adjust the melting process
according to raw material composition to ensure product quality.
- Low Operation & Maintenance Costs: The electric heating system has a simple structure and low
failure rate; graphite electrodes have a long service life, and
maintenance is convenient, reducing overall operation costs.
- Large-Scale Production Compatibility: Modular design supports parallel operation of multiple furnaces,
matching the production capacity of 5000-50,000 tons of mineral
wool/rock wool per year.
- Mineral Wool/Rock Wool Production: Core melting equipment for thermal insulation material
manufacturers, producing high-quality mineral wool, rock wool, and
related products (such as insulation boards, blankets, pipes).
- Industrial Solid Waste Utilization: Treatment of metallurgical slag (steelmaking slag, non-ferrous
metal smelting slag), tailings, and other industrial solid wastes,
converting them into raw materials for mineral wool/rock wool.
- Thermal Insulation Engineering: Supporting equipment for thermal insulation projects in
construction, petrochemical, power, and other industries, providing
high-performance mineral wool/rock wool materials.
- New Building Materials Industry: Production of fire-resistant, sound-absorbing, and thermal
insulation materials for green buildings, in line with global
low-carbon building development trends.
- Professional Process Optimization: Tailored for mineral wool/rock wool production, with optimized
furnace structure and temperature control system to match the fiber
formation process, ensuring product stability.
- International Certification & Compliance: Products have passed CE, ISO 9001, ISO 14001, and other
international certifications, complying with technical and
environmental standards in global markets.
- Customized Solutions: Provides personalized equipment design according to the user's
raw material characteristics, production capacity, and product
requirements, including furnace capacity, power configuration, and
flue gas treatment systems.
- Comprehensive After-Sales Service: Offers one-stop services including equipment installation,
commissioning, operation training, and overseas technical support;
spare parts supply is timely to ensure uninterrupted production.
This AC Electric Arc Furnace for Mineral Wool/Rock Wool Production
is a key equipment for the transformation and upgrading of the
thermal insulation material industry, helping enterprises improve
production efficiency, reduce environmental impact, and enhance
product competitiveness in the international market. For more
detailed technical parameters, process solutions, or quotation
information, please contact our professional sales team.
