The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1910-07-24
FURNACE
LESS ECONOMICAL
Trend in Copper Smelling Is
Mere and More to the
Reyerberatory.
NO BLASTS IN THE
INTERNATIONAL WORKS
Garfield SmeIter Soon MAY Be
Entirely Without This Type
Of Furnace.

Reverberatory smelling OF copper orez
Is becoming more general in this coun.
Try. The success attending the use OF
furnaces OF this type already in operation
at Cananea has led TO the building OF ana
additional furnace which viii soon he
placed in commission. The practice Is
the result Of demonstrated economies i'm
operation. II water power were available
the same commercial advantage would NOT
obtain. 1t IS mainly because the waste
heat can be utilized in the development
OF power that the reverbera tory shows
marked economy contrasted with the
blast furnace. says the Mining and Sci
entitic Press.
A Anaconda and Salt Lake a like war;
rant Tor employing the revcrberatores
exists. An additional advantage cnrisistg
In the greater ficXihiity of the reverbcra-
tory in taking, care OF sudden changes
III the composition of the charge. lThe
blast furnace needs to be operated with
great uniformity In order 70 yield the best
results. Though IL can be operated with
ica and bases it Is not economical when
sudden changes occur. This statement
may he debatable bur there is no doubt
that the reverberatory is less sensitive
in this regard. On the other hand il is
true that the reVcrbeiato will success
fully smelt fine ore and nue-dust, while
these materials when put into the blast
furnace produce an excessive amount of
dust. and herein lies another reason
for The rapid growth in favor Of the for
mer type OF furnace. The present sltua-
tlbil OF inc CuSloIgi copper SlneliSrS IN
cllneS the balance in the same direction.
The quantity of concentrate offered is
steadily increasing while smelling ores
arc becoming scarcer, Furthermore SILL
clous ore is not so abundant as formerly.
because OF the expansion of milling and
other forms OF local treatment. Basic ores
usually make considerable fine material.
and this is not adapted TO the blast
furnace
Thus the reverberatory finds n large
field OF usefulness. in spite OF the Gect
that ii is more particularly applicable to
charges or relatively high silicious con-
tent. IT is easier To secure n seryfceable
acid that a basic fettlng and the dust
from basic charges tends to corrode tho
arch and walls, The utilization OF highly
siliciOus fine ore has been suggested as
means OF overcoming this difficulty, the
plan being 10 introduce - certain amount
OF such material at the beginning of each
charge TO give the arch and walIs
protective coating OF acid dust Less
basic dust would then adhere. and cor
rosion would probably be lessened.
II is stated that the Garfield smelter
near Salt Lake may soon he using rever-
beratory furnaces almost exclusively An
addition 10 this part OF the plant Is al
anticipation of the larger deliveries Of
concentrate from the Utah Copper com
pany's mills that Will follow the recon
struction OF the mall acquired from the
IL is noteworthy that other custom ores
are not being offered in such abundance
to the Garfield smelter as 10 insure 81
supply sufficient for its blast-furnace
plant The new smetcr OF the Internal
iional Smelling and Refining COMPANY in
Pine canyon contains five reverbera tories
and no blast-furuaces. This is The first
large plant to be constructed i'm America
In which blast-furnacc smelling plays no
part. The reverberatories at Pine can
yon are 102 feet long. by ~ feet wide.
aud each VIII treat about 80 tons OF
charge per diem. II viii be noted that
the length of the furnace is less than
that OF the old furnaces at Anaconda, and
il is considered open To question whether
even this lenglh is not greater than is
REQUIRED for economic work.
There is q limit OF size bevond which n"
gain is experienced In the opinion Of
some experienced metallurGists no advan-
taec is obtained nv making n reyerbera-
tory longer than 81 or 81 feet.