Page 69 - Glass Machinery Plants & Accessories no. 4/2018

Various checker designs
are available to suit glassmak-
ing needs, including conven-
tional settings, HPC (chimney
type), and the Hyde Checker. All
modular checker settings avail-
able from HWI can be designed
with horizontal clean-outs where
appropriate. In addition, all mod-
ular checker settings are colour
coded to height groupings to
provide excellent stability.

Condensate zone
This zone has lower tempera-
tures, but ranges may be wide
where cold incoming air enters
the checker setting. A large
amount of condensation of vola-
tile constituents is present from
the exhaust gas. Plugging may
occur from the entrapment of
solid dust and fragments from
higher up in the setting. Reducing
conditions can also affect refrac-
tory selection:
®
t 4VQFS /BSNBH B (gas fired)
Burned 96% MgO with
improved creep resistance
®
t /BSNBH VZ (oil fired) Mag-
zircon composition with a for-
sterite bond
®
t /BSNBH 50 DBRG 50%
MgO direct-bonded magnesite
chrome
LOWER CHECKERS,
RIDER TILE,
AND SECONDARIES
This zone has temperature
cycling and sulphate condensate
that can be an issue. In addition,
creep resistance is critical in this
application due to the increased
load on the refractory. Indicated
products:
t /JLF 4 8 "M 0 GPS
increased resistance to conden-
sate
®
t 6GBMB 9$3 "M 0 XJUI
increased creep resistance
®
t ,9 Conventional high-
fired super-duty fireclay
®
t ,BMB 6OJRVF "M 0 UIBU
has superior resistance to ther-
mal cycling and creep

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