What are the raw materials for Rockwool? | FUNAS Guide
Explore the primary raw materials for rockwool, their roles in thermal insulation, and how material selection affects product performance. Expert guidance from FUNAS.
What are the Raw Materials for Rockwool?
Professionals in thermal insulation materials often search for the fundamental components used in rockwool production. Understanding these raw materials is vital for assessing product quality, sourcing, and ensuring compliance with industry standards. Here, we detail the key raw materials for rockwool, offering quick insights for industry experts.
Main Raw Materials Used in Rockwool Production
- Basalt:
- Primary source material; a volcanic igneous rock.
- Chosen for its high melting point (around 1,500°C) and mineral composition.
- Provides excellent temperature resistance and insulation properties.
- Accounts for the majority of the mix (up to 98% in some rockwool products).
- Diabase (Dolomite or Gabbro):
- Acts as a supplementary mineral.
- Balances mineral composition and helps optimize melting characteristics.
- Enhances fiber formation and durability.
- Recycled Slag:
- Byproduct from steel manufacturing, such as blast furnace slag.
- Utilized to improve sustainability and reduce material costs.
- Contributes to the overall mineral makeup, supporting fiber integrity.
- Bauxite or Other Alumina Sources:
- Occasionally incorporated to adjust the alumina content of the mix.
- Ensures desired chemical stability and fiber strength.
- Additives and Binders:
- Phenol-formaldehyde resin commonly used as a binder.
- Small quantities of oils or dust suppressants added to control dust emission and improve product handling.
- Some formulations may integrate hydrophobic agents to enhance water repellency.
Overview of the Rockwool Manufacturing Process
- Raw Material Preparation:
- Mineral rocks and slag are carefully weighed and blended for targeted product specifications.
- Melting:
- The mix is melted at ~1,500°C in a cupola furnace.
- Fiberization:
- The molten blend is spun at high speed to form fibers.
- Binder Application:
- Fibers are coated with a binder to stabilize the mat.
- Curing and Finishing:
- Cured at high temperature, then cut and packaged per application requirements.
Key Considerations for Material Selection
- Thermal Performance:
- High-quality basalt ensures thermal conductivity values between 0.033–0.040 W/m·K.
- Material purity directly impacts insulation efficiency.
- Fire Resistance:
- Inorganic mineral base makes rockwool non-combustible (Euroclass A1 or A2, EN 13501-1).
- Ideal for passive fire protection.
- Environmental Profile:
- Incorporating recycled slag enhances sustainability (see European Insulation Manufacturers Association, EURIMA).
- Compliance:
- Material selection must meet international and regional standards, including ISO 14001 and CE Marking.
Authoritative References
- European Insulation Manufacturers Association (EURIMA):
(https://www.eurima.org/resource-hub/)
- International Standard ISO 14001 on Environmental Management
- EN 13501-1 Fire Classification of Construction Products
For more insights and high-quality rockwool solutions, contact FUNAS—your trusted partner in thermal insulation materials.
How Should Chilled Water Pipe Supports Be Insulated to Prevent Condensation?
Why Is Chilled Water Pipe Insulation Still Sweating After Replacement?
7 Rubber Foam Insulation Installation Mistakes That Cause Condensation
How to Choose Insulation Thickness for Hot and Humid Conditions
service
How do you pack insulation products for export?
Products are packed according to material type and shipping requirements. Common options include plastic bags, cartons, woven bags, pallets, or customized export packaging to help protect the goods during transportation.
What is your usual production and delivery time?
Delivery time depends on the product type, order quantity, customization requirements, and shipping destination. Standard products are usually faster to arrange, while customized or large-volume orders may require longer production time.
FAQ
What insulation products do you supply?
We supply rubber foam insulation, glass wool insulation, rock wool insulation, XPS insulation boards, acoustic foam products, and thermal insulation adhesive. These products are commonly used in HVAC systems, construction projects, industrial equipment, and acoustic applications.
Can you provide customized insulation products?
Yes. We can support customized sizes, thicknesses, densities, aluminum foil facing, adhesive backing, colors, packaging, and other project requirements depending on the product type and order quantity.
You might also like
Rock Wool Blanket Roll for Thermal and Acoustic Insulation
FUNAS Rock Wool Blanket Roll is a flexible mineral wool insulation roll designed for thermal insulation, acoustic control and fire-resistant building applications. The roll form makes it suitable for roofs, walls, steel structures and large-area industrial insulation projects where easy cutting, handling and coverage are required. Density, thickness, length and width can be customized according to project requirements. It is suitable for contractors, distributors and B2B buyers looking for bulk mineral wool blanket roll supply. Specific fire rating, acoustic performance and technical data should be confirmed before quotation.
Egg Crate Rubber Acoustic Foam Roll
FUNAS Egg Crate Rubber Acoustic Foam Roll is a sound absorbing foam material with a raised convoluted surface, also known as egg crate acoustic foam or egg box acoustic foam. The profile design helps increase the surface area for acoustic treatment, making it suitable for echo reduction and indoor noise control in studios, KTV rooms, cinemas, offices, home theaters and commercial interior projects.
Rock Wool Insulation Board for Thermal and Acoustic Insulation
FUNAS Rock Wool Insulation Board is a semi-rigid mineral wool slab designed for thermal insulation, acoustic control and fire-resistant building applications. The board form provides stable coverage for walls, roofs, partitions, equipment rooms, HVAC duct areas and industrial insulation projects where flat, easy-to-install panels are preferred. Available in multiple density options, the rock wool board helps support heat insulation and sound absorption for commercial and industrial buildings. Aluminum foil facing can be added upon request. It is suitable for contractors, distributors and project buyers looking for bulk mineral wool board supply. Specific fire rating and acoustic data should be confirmed before quotation.
Extruded Polystyrene (XPS) Insulation Board
FUNAS XPS Insulation Board is a rigid extruded polystyrene foam board designed for building thermal insulation applications. It is available in thickness options from 30mm to 100mm, with a standard board size of 0.6m width and 1.8m length. Density, length and width can be customized according to project requirements, making it suitable for contractors, distributors and bulk insulation material buyers. Contact FUNAS for XPS board specifications, customization options and wholesale quotation support.
Rubber foam insulation is widely used around chilled-water pipes, refrigerant lines, HVAC ducts and equipment surfaces, but the material name does not define a complete specification. This guide explains how closed-cell flexible elastomeric foam works, when tube or sheet formats are appropriate, where its limitations begin, and which product data project buyers should verify before approval or quotation.
Leave a message
Have any questions or concerns about our products? Please leave us a message here and our team will get back to you promptly.
Your queries, ideas, and collaboration opportunities are just a click away. Let’s start a conversation.
FUNAS Insulation Material
funasinsulation