Rocks are graded and crushed, mixed with coke and slags, then melted in a furnace at a temperature of 1500 °C.
The melt is directed onto rotating wheels where it is spun into wool. Small quantities of resin binder are added to lock the fibres together. The wool is formed into a mat which is cured and compressed in an oven. Then it is cut and possibly covered with facing materials.
The melt is directed onto rotating wheels where it is spun into wool. Small quantities of resin binder are added to lock the fibres together. The wool is formed into a mat which is cured and compressed in an oven. Then it is cut and possibly covered with facing materials.
