used for this kiln
Outside: recycled Rylance
firebricks from the old kiln.
Centre wall between chambers: standard
firebrick with high alumina firebricks lining in the throat and
fire box, and especially around the base of the bagwalls.
Bagwalls are made of 9 inch square high alumina
Chambers up to the arches are lined
with K26 hot face insulation bricks, except for the area in the
throat a couple of courses above the fire arch.
arches are lined with K28s. These insulation bricks
came from Steve
Harrison and are of
American manufacture. Geoff looked at both the Chinese and
Malaysian types but eventually decided to go with the American
ones (which were about 10% dearer) because of his reservations
about the long term durability of the others. The insulation
bricks have a very fine wash of alumina and kaolin painted over
them to assist in resisting any attack by fly ash.
images below are links to enlargments