WASHING AND

SCREENING process of
the Celgar kraft opera-
tion is pictured at the
right. Chips are con-
veyed from the chip
Screens to hoppers
feeding directly‘ to: the

pre-steaming vessels, .

then through. high
pressure feeders.to

each digester. From the .

digesters, pulp is blown

continuously. toa

single blow tank of 100

tons capacity. From

the blow tank,. stock is

pumped to three knot-

ersvand to a three-

- Stage washing system
of three 11-feet-by-20-

feet washers. Stock.

from the third washer
goes to the head box of

four Cowan: ‘screens:

and then .to the screen-
ed_ stock chest. From:
this chest the stock ‘is
pumped through. - dirt
Separators to the brown
stock decker and

thence to unbleached .
- density storage.

OVERALL VIEW. of the

60-ton Colby Crane is”

seen at the right. The

picture shows deck on —

which log bundles. are
broken. up. The. 100-

foot diameter clarifier _

at right removes solids
from water. coming
from barkers. The sort-
_ed logs in bundles are
towed down the. Arrow
Lakes and lifted into
the woodroom by the
gantry - type crane
which has grapples.
* This arrangement. per-
-mits logs to ‘be. taken

from trucks and. rail:
ears in the same:man-

ner. Bundles: are
broken down on the log

. deck and the .50-foot,

log lengths can — be
handled directly . into
one of two combina-
tions of ring-type bark-
er and horizontal chip-
per. The Colby: crane
operates on a 360-foot
runway, extending over
the road and track’on
the land.end,. with. the

other end cantilevered. ””

over the river.

omprises wai e

«chlorination;
first.’ -caustic. . process;
first: ; chlorine: * dioxide ~°
. process;
process;-: final: stage: of
chlorine’ dioxide. Stock
from’.the: ‘hi-density.
rown. stock storage is!
' pumped ° at : controlled
consistency and: ‘volume

stage, the” chiori ion.
_tower.: In ‘flow: shéet' se

ic
From’ this: treating
-tower, thé flow is to an-

+ Our “washer” and” to

_xide. tower. ‘This tower
is. followed” bya: third
washer, and a:. second .
“caustic -towe!

stage. of ‘chlo:

“> xide followed apy: a-fifth

washe

. THE CELGAR STORY

IN ORDER... to. utilize’.
50-foot: logs, Celgar has
installed. horizontal
chippers'(seen at-right)' -

“so that the logs pass by

‘conveyor’ directly ‘from
the barker (where bark .
“4s removed). into~ the
-Chipper."Logs come’ into.
‘the woodroom from_pri-
vate . truckers, ‘rail, and.

the ‘river. ‘Bundled. logs °
from. Celgar’s wood. op-..

eration: are normally

‘towed :down: the: ‘Arrow °.:

Lakes in ‘bundles: of-10

of.’ solid

. These*bundles

in the woods’

so that no-logs over:35-

Anch: glemetet will'go to;

the.;pulp, ‘mill.; Larger. -

‘sizes are “directed to the -
sawmill, Ec :

ond
a 42-inch banker: and.
thence to” & 154-inch

4 ONE. OF: the many. fea

tures’ of the -huge,.Cel-
‘gar plant’ are

Kamyr* continu us. di- -

. gesters, each. with

“Me pacity of 2'75-tons.a day.

. They: are: seen. in ‘th
ight a:

ine, caustic

and :
ine. dioxide is employéd

“to give high

These towers ‘are to.the . ..
hy

. Tight.’

Celgar is the. first :mill’
in. British ; (Columbia . to:

. install Kamyr continu-

_ous digesters, With this ~
“type,.echips. are fed: con- .

stantly into /one. end

land. Taw unbleached .--
pulp comes ‘out: the: :*.-
other. In" “planning® the’

-ldyout “was : facili:

ted. by, use of a scale’: .
nary. de-::

‘ sign’ ‘was ¢hecked .

ip

ape et

A
“graph. shows rec

Jar bundle:and
bag. booms: ‘
‘mi; nity ‘Celgar. operae