Hebei Greens Building Material Technology Development Co.,Ltd

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How is ROCKWOOL produced?

How is ROCKWOOL produced?

2025-10-21

How is ROCKWOOL produced?

Raw Material Melting:Crush basalt, diabase and other volcanic rocks into small particles, then feed them into a cupola or electric furnace. Heat the materials to a molten state at a high temperature of 1400-1500°C.
Fiberization:Use high-speed rotating centrifugal rollers to throw the molten rock out. The molten rock is stretched into continuous fine fibers under the action of centrifugal force and air flow.
Bonding and Forming:Spray a certain amount of adhesive and waterproofing agent on the fibers. Then collect the fibers into a cotton blanket through a conveyor belt, and press it into products of different densities and thicknesses by a forming machine.
Curing and Cutting:Send the formed semi-finished products into a curing oven. Cure them at a specific temperature (usually 200-220°C) to make the adhesive fully solidify. Finally, cut the cured products into standard sizes according to needs.

Blog Details

Home Blog

How is ROCKWOOL produced?

How is ROCKWOOL produced?

2025-10-21

How is ROCKWOOL produced?

Raw Material Melting:Crush basalt, diabase and other volcanic rocks into small particles, then feed them into a cupola or electric furnace. Heat the materials to a molten state at a high temperature of 1400-1500°C.
Fiberization:Use high-speed rotating centrifugal rollers to throw the molten rock out. The molten rock is stretched into continuous fine fibers under the action of centrifugal force and air flow.
Bonding and Forming:Spray a certain amount of adhesive and waterproofing agent on the fibers. Then collect the fibers into a cotton blanket through a conveyor belt, and press it into products of different densities and thicknesses by a forming machine.
Curing and Cutting:Send the formed semi-finished products into a curing oven. Cure them at a specific temperature (usually 200-220°C) to make the adhesive fully solidify. Finally, cut the cured products into standard sizes according to needs.