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{"title":"Rock Wool Cold Slag Electric Furnace Rock Wool Electric Furnace","imgUrl":"https:\/\/img.chinax.com\/nimg\/8a\/e4\/dc8beaf3326afaefc9427844dc5e-200x200-1\/rock_wool_cold_slag_electric_furnace_rock_wool_electric_furnace.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Rock wool electric furnace","Certification":"ISO9001","Place of Origin":"China"}}
{"title":"Metal Smelting - Slag Treatment Machinery Manufacturing","imgUrl":"https:\/\/img.chinax.com\/nimg\/e7\/c4\/d1a96a0d419f05a65c99d14388c1-200x200-1\/metal_smelting_slag_treatment_machinery_manufacturing.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Rock wool electric furnace","Certification":"ISO9001","Place of Origin":"China"}}
{"title":"Mineral Wool, Rock Wool Electric Furnace - Blast Furnace Slag Mineral Wool","imgUrl":"https:\/\/img.chinax.com\/nimg\/c7\/6b\/8e5aa7f71080637241ef10fc0c15-200x200-1\/mineral_wool_2c_rock_wool_electric_furnace_blast_furnace_slag_mineral_wool_furnace_28new_29.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"Blast furnace slag mineral wool furnace","Certification":"ISO9001","Place of Origin":"Shaanxi, China"}}
{"title":"Mineral Wool, Rock Wool Furnace - AC Electric Arc Furnace(New)","imgUrl":"https:\/\/img.chinax.com\/nimg\/3a\/2c\/eb7133d6cb452783191a48ed7825-200x200-1\/mineral_wool_2c_rock_wool_furnace_ac_electric_arc_furnace_28new_29.jpg","attrs":{"Brand Name":"Shaanxi Chengda","Model Number":"AC slag furnace","Certification":"ISO9001","Place of Origin":"Shaanxi, China"}}
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
Customized High-Efficiency Electric Furnace for Mineral Wool Production from Industrial Hot Slag
Product Overview
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.
Core Customization Advantages
1. Residual Heat Utilization & Energy Efficiency Optimization
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.
2. Strong Adaptability to Hot Slag Characteristics
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.
3. Intelligent Control & Stable Operation
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.
5. Tailored Configuration for Production Scale
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).
Industrial hot slag (60-80%) + supplementary minerals
Melting Temperature
1500-1600℃
Heating Method
Electric arc heating + residual heat utilization
Power Supply
35 KV/10 KV, 3-phase 50/60Hz
Power Consumption
180-280 kWh/ton of mineral wool
Furnace Lining Material
Corundum-magnesia refractory castable
Control System
PLC + Touch Screen + Remote Monitoring
Hot Slag Feeding Method
Sealed chute + automatic tilter
Emission Standards
GB 16297 / EU CE / US EPA
Application Fields
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.
Customization Process & Service
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!
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...
