Equipment use:
1.This equipment is mainly used to receive the slag from the
electric furnace for heating and insulation, conveying to the
centrifugal cotton, the furnace has a slag hole, for the use of
mineral wool machine, slag mouth capacity of ~4 tons/hour, more
than 80% of the yield, can produce an annual output of 25,000 to
30,000 tons. The furnace is provided with an outlet for the use of
surplus iron. The furnace cover is provided with a temperature
measuring hole and a feeding hole.
2 .Device Overview
This equipment is designed and manufactured according to
GBI0067.1-4 "Basic Technical Conditions for Electric Heating
Equipment". The main technologies used in this equipment are:
semi-closed structure design; Tube type water cooling furnace
cover: energy-saving short net;
Copper-steel composite hydraulic lifting conductive transverse arm;
Large section water cooled cable; PLC automatic control system;
Intermediate frequency induction furnace:
High input power improves the melting rate of the furnace and
reduces energy consumption.
The small volume of the intermediatefrequency induction furnace
greatly reducesthe total area occupied, reduces infrastructure
investment, and improves space utilization.
Adopting a cyclone dust removal hood,:environmentally friendly
Our customized Industrial Hot Slag-to-Mineral Wool Electric Furnace is a high-performance melting equipment tailored for converting
industrial hot slag (e.g., blast furnace hot molten slag,
steelmaking hot slag, non-ferrous smelting hot slag) into
high-quality mineral wool products. By leveraging the residual heat
of hot slag (typically 1200-1400℃), the furnace achieves ultra-low
energy consumption, high resource utilization, and eco-friendly
operation—aligning with circular economy and carbon reduction
goals. It is the core equipment for mineral wool production lines
focusing on industrial solid waste recycling, widely applied in
construction insulation, fire protection, sound absorption, and
other high-value fields.
- Hot Slag Direct Feeding Design: Customized feeding system (e.g., sealed chute, molten slag ladle
tilter) matches the temperature (1200-1400℃) and flow rate of
industrial hot slag, minimizing heat loss during feeding. Residual
heat utilization reduces electric energy consumption by 30-50%
compared to cold raw material melting (only 180-280 kWh/ton of
mineral wool).
- Energy-Saving Heating System: Equipped with variable-frequency electric arc heating or
resistance supplementary heating (customizable based on hot slag
temperature stability), which precisely compensates for heat loss
and ensures molten material temperature (1500-1600℃) meets fiber
forming requirements.
- Customized Raw Material Compatibility: Adjusts furnace structure, refractory material selection, and
molten pool design according to hot slag composition (e.g., SiO₂,
Al₂O₃, CaO content), particle size, and viscosity—suitable for
blast furnace slag, converter slag, electric furnace slag, and
other industrial hot slags (compatible with 60-80% hot slag
proportion in raw materials).
- Corrosion & Wear Resistance: Furnace lining adopts high-grade corundum-magnesia refractory
castables or composite refractory bricks (customized based on slag
alkalinity), with a water-cooled furnace shell and anti-scouring
molten pool structure—extending service life to 4-6 years.
- PLC+AI Intelligent Control System: Real-time monitors hot slag feeding amount, molten pool
temperature, viscosity, and electric parameters; automatically
adjusts heating power and feeding speed to avoid molten material
overheating or under-melting. Supports remote operation, data
logging, and fault early warning.
- Continuous & Stable Production Configuration: Customizable hourly output (3-20 tons/hour) with continuous
feeding, homogenizing, and tapping systems—matches subsequent
centrifugal fiber forming, curing, and cutting processes to ensure
consistent mineral wool fiber quality (fiber diameter 3-7μm,
thermal conductivity ≤0.038 W/(m·K)).
- Low Emission Design: Sealed furnace body + flue gas dust removal and desulfurization
system (customizable based on local environmental standards)
reduces dust emission to ≤10 mg/Nm³, SO₂ emission to ≤35
mg/Nm³—meeting EU GB 16297 and US EPA standards.
- High Solid Waste Utilization: Realizes 60-80% industrial hot slag recycling, reducing reliance
on natural minerals (e.g., basalt) and turning industrial waste
into high-value mineral wool products—qualifying for green
energy-saving project subsidies in many regions.
- Small-to-Large Capacity Customization: Ranges from 3-5 tons/hour (small-scale pilot plants) to 10-20
tons/hour (large-scale production lines), with customizable overall
dimensions and layout to fit factory space and existing production
processes.
- Auxiliary System Matching: Optional customized auxiliary equipment includes raw material
proportioning system (for supplementary cold materials like silica
sand, bauxite), molten material filtering device, automatic tapping
control, and waste heat recovery system (for heating or power
generation).
- High-value utilization of industrial hot slag from steel plants,
non-ferrous smelters, and power plants.
- Production of mineral wool insulation boards, pipes, blankets for
construction, petrochemical, thermal power, and shipbuilding
industries.
- Manufacturing of fireproof mineral wool materials for fire doors,
fire partitions, and high-temperature equipment insulation.
- Demand Communication: Understand hot slag parameters (composition, temperature,
output), production scale, product quality requirements, and local
environmental standards.
- Scheme Design: Provide customized equipment drawings, technical parameters,
energy consumption analysis, and investment budget.
- Manufacturing & Testing: Strict quality control during production, with factory
commissioning and performance testing before delivery.
- On-Site Installation & Training: Professional team provides on-site installation guidance,
operation training, and after-sales technical support.
- Long-Term Cooperation: 1-year warranty, 24/7 maintenance service, and regular equipment
inspection and optimization.
We specialize in customized industrial electric furnace solutions
for mineral wool production from industrial hot slag, with
successful cases in steel plants and mineral wool manufacturers
worldwide. Contact us to get a tailored solution!
