Bucher Emhart Glass now offers forehearth channel blocks as well as a new lightweight refractory material called EmLite 30.
Bucher Emhart Glass now provides refractory solutions for forehearths, including channel blocks, sub- and superstructure and insulation.
The 333 channel blocks are available together with high performance mullite superstructure.
The workhorse material for forehearths is a mullite composition. This material is used for roof blocks, burner blocks, chimney blocks, and other various shapes.
If a particular component requires a more premium composition, an alumina-fortified mullite is used.
In colorant forehearths or other applications where corrosion is a concern, a zircon mullite material possessing excellent resistance to alkali vapor attack is used.
The composition is also used for channel blocks and stirrer covers.
Fiberglass forehearths require silica-free composition. For this application a zirconia-toughened alumina is offered.
As for the EmLite 30 lightweight refractory material, the material for refractory covers has the robustness of typical refractory materials, while at the same time reducing the weight of the part by 30% compared to covers made of a conventional mullite.
The weight reduction in EmLite 30 is achieved by increasing the porosity in the material, but still preserving its strength and resistance to alkali vapor corrosion.
This increased porosity also has the effect of reducing the thermal conductivity of the material, giving the material an increased insulation value.
Improving the insulation value above the spout will help to keep heat inside the spout and reduce the temperature of the covers themselves.
EmLite 30 is available in all front and rear refractory spout covers.
The reduced weight eases the stress on the operators during installation. An 80 pound rear cover now weighs 56 pounds.