|
Generally, sufficient material is added to provide at
least a 25mm layer on the ingot head, the actual thickness
increasing with ingot size. The application rate per
ingot tonne thus varies from as low as 0.6 Kg per tonne
up to 2 Kg per tonne, depending on the product type,
ingot dimension and, to a lesser extent, steel quality.
There is a range of FERRUX recipes available to cater
for different ingot sizes.
Application of pre-weighted bags of material is carried
out simply by placing on the metal surface using a
shovel, hooked tool, or by throwing. In the case of
uphill-teemed ingots the recommended practice is to
add the material once metal is within the feeder head.
Where top-teemed ingots are concerned the anti-piping
compound must be added on completion of the teeming
cycle. |
