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Патент USA US2109149

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Feb. 22, 1938.
R. B. HORN
2,109,149
BURNER FOR SINTERING MACHINES
Filed May 14, 1937
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Feb. 22, 1938...
R. B. HORN
2,109,149
BURNER FOR SINTERING MACHINES
Filed May 14, 1957
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INVENTOR.
F141 PH ,E' HOE/V
BY
‘7W
ATTORNEYS
’
2,109,149
Patented Feb. 22, 1938
UNITED STATES , PATENT
2,109,149
OFFICE
’
‘BURNER. Fon- sm'rsnmc. MACHINES
Ralph B. Horn, Brighton, Ala., assignor to The
Republic Steel Corporation, Cleveland, Ohio, a
corporation of New Jersey
Application May 14, 1937, Serial No. 142,634
9 Claims. (Cl. 266-21)
This invention relates to the art of sintering
and is more particularly concerned with sinter
ing machine burners of new and improved con
struction.
,
Burners for sintering machines of ‘the contin
uous type, as constructed heretofore, have,
broadly ‘speaking, consisted of; a hollow metal
part or retort containing a combustion chamber
and having'outlets in the bottom wall for the
10 ?ames to'pass thru; and a mantle consisting of
a metal shell lined with refractory bricks having
their opposed faces cut away to shield and direct
the ?ames‘ from the retort outlets toward the
charge‘ on ‘the ‘pallets traveling therebeneath.‘
15
Burners of this type are not entirely satisfac
tory in commercial use. The bricks in the man
tle are comparatively short lived and are not all
of the same length of life. When some of them
have to be replaced, much time and expense is
2 0 involved because the mantle must be removed and
cooled before new bricks can be installed. More
over, the metal shell supporting the bricks warps
quickly in use and. cannot satisfactorily be re
lined, and as a result, new mantles are required
2
at comparatively short intervals of time.
This
maintenance expense thus becomes a consider
able item in the cost of operating the sintering
machine. Furthermore, a considerable space
must be maintained between the bottom of the
section, of one form of burner embodying the
present invention;
Fig. 2 is an_end view, partly sectioned on line
2-—2 of Fig. 1.
' Fig. 3 is a detail enlarged view showing one
5
of the hangers for suspending a brick of the
burner mantle of Fig. l; and,
I
‘
Fig. 4 is a side elevational view of one of the
mantle bricks of Fig. 1_. '
‘
In Figs. 1 and 2 the rods I are secured to super- 10
structure (not shown) and carry a supporting
frame consisting of two parallel I-beams 2 and
cross angles 3. This framework may be raised
or lowered by adjustment of nuts 4 on rods l.
A more or less conventional burner or retort 15
5 is disposed between the I-beams 2 and is sup
ported on the ?anges thereof. This retort con
sists of a metal top plate ‘I carrying a pipe ?ange
6 thru which a pipe 8 enters to deliver combusti
ble material into the retort, and a bottom plate
9 secured to the top plate ‘I and forming there
with .a combustion chamber Ill. The bottom
plate 9 of the burner or retort is‘provided with
a plurality of downwardly extending outlets ll
thru which the ?ames from the combustion
0
chamber i0 may project.
Rods 1 l2 extend beneath the I-beams and are
connected thereto, as by brackets l3. These rods
12 carry a plurality of brick supporting brackets
metal shell of the mantle and the top edges of
H which brackets are spaced from each other
large quantities of ?ame and heat and corre
spondingly decreases the e?iclency of the burner
rods i2 independently of each other.
The lower portion of brackets 14 are twisted
thru 90 degrees and at their extreme lower ends
have welded thereto short plates l6 of a size and
shape suitable to enter holes in the bricks I‘!
30 the pallets to prevent excessive heating and warp
‘along the rods by spacers I5. It will be noted
age of the shell and such space permits escape of , that the brackets ll may swing or pivot about
35
and machine.
_
The present invention provides a burner, and
more particularly a mantle for a burner, for sin
tering machines of the continuous type which
avoids the disadvantages of the prior burners,
which is much longer in life, which permits inde
40 pendent replacement of any of the bricks thereof;
in which the bricks of the mantle can be very
quickly‘ and cheaply replaced, and which, addi
tionally, increases the emclency of the burner
45 and sintering machine considerably because the
?ames can be brought into ‘better contact with
the charge on the pallets therebeneath. In other
words, the present invention not only reduces the
cost of construction and maintenance of , bum
50 ers of the class described, but also increases the
e?lciency and thereby lowers the cost of operat
ing sintering machines of the class described.
In the drawings accompanying and forming a
part of this speci?cation,
Figure 1 is a side elevational view, partly in
which are provided therefor.
-
The bricks I‘! which are supported by the hang
ers I4, are generally rectangular in side eleva—
tion, but have concave upper corners l 8 and have
their lower inner faces cut away as at l9. .Each.
of these bricks has a narrow opening Na in its
top portion to accommodate the lower portion
of a hanger l4 and a horizontally enlarged open
5
ing "b to receive the part 16 of the hanger i4. as
When the hanger H with its brick is swung out
wardly until the brick clears those on opposite
sides thereof, the brick may be slid off the part
l6 and replaced by another brick. When opposed
bricks I‘! are in assembled position withv respect 50
to part 9 of the retort 5, the surfaces l9 will con
stitute prolongations of the ?ame outlet 0pen-'
lngs II from the combustion chamber In and will
serve to shield and direct the ?ame downwardly
onto the charge to be sintered.
55
2
2,109,149 -
The bricks 20 which close the ends of the spaces
between the parallel, opposed rows of bricks II,
are supported on brackets 2| swingably or piv
otally mounted on cross rods 22 secured to beams
2 by brackets 22a.
Levers 23 each carrying a
weight 24 on one arm and a brace 25 on the
other arm are pivotally mounted on rods 20 se
cured to opposite ends of the retort 5. Each brace
25 is pressed against the adjacent end brick 20
10 by the weight 24 on lever 23, but when the weight
24 is lifted the pressure of the brace 25 against
the brick 20 is released and the block may be
swung about its supporting rod 22 and removed
from the hanger 2i if desired.
. "
15' vIn assembling the mantle proper of the appa
ratus just described, the bricks II are placed one
after another on their hangers l4 preferably with
the application of a suitable mortar to their
broad faces, and when all the bricks ll of both
20
rows have been so assembled, the end bricks 20
are placed in position with mortar sealing. the
joints between these bricks and bricks II. The
levers 22 are rotated to bring the braces 25 into
pressing relation against the bricks 20.- When
25 the mantle is to be replaced, the end bricks 20
are ?rst removed as above described and then the
side bricks l1 are removed by breaking the mortar
between them and sliding them oi! their hangers
i4. If it is necessary to replace only a few of the
30
bricks II, this may readily be accomplished by
raising one or both of the weights 24, swinging
the brick or bricks to be removed on their hangers
about their rod l2 and then ‘substituting a new
brick or bricks, preferably with mortar applied to
35 their side surfaces, and then swinging the new,
brick or bricks and their hangers into place, after
which the weights 24 may be lowered.
burners and the e?iciency of the burner and
sintering machine is increased.
_
Having thus described my invention so that
those skilled in the art may be able to practice the
same, what I desire to secure by Letters Patent is
defined in what is claimed.
What is claimed is:
'
.
1. A burner for a sintering machine of the con
tinuous type comprising a retort having a com
bustion chamber and a plurality of ?ame outlets 10
extending thru the bottom thereof, and a- mantle
for said outlets comprising’ a plurality of indi
vidually supported bricks.
2. A burner for a sintering machine of the con
tinuous type comprising a retort having a com 15
bustion chamber and a plurality of ?ame outlets
extending thru the bottom thereof, and a mantle
for said outlets comprising a plurality of pivotally
supported bricks.
°
_
3. A burner for a sintering machine of the con 20
tinuous type comprising a retort having ‘a com
bustion chamber and a plurality of ?ame outlets
extending thru the bottom thereof, and a mantle
for said outlets comprising a plurality of individ
ually and pivotally suspended bricks.
25
4. A burner for a sintering machine of the con
tinuous type comprising a retort. having a com
bustion chamber and a plurality of ?ame outlets
extending thru the bottom thereof, a mantle for
said outlets comprising a plurality of bricks, and
movable means for pressing the bricks against
each other.
5. A burner for a sintering machine of the con- ’
tinuous type comprising a retort having a com
bustion chamber .and a plurality of ?ame outlets 35
extending thru the bottom thereof, a mantle for
said outlets comprising a plurality of individually
It will be understood that the bricks herein - and swingably supported bricks, and means for '
described should be composed of good refractory
40 material and that they'should be capable of en
during the high temperatures to which they are
subjected for prolonged periods of time without
spalling or breaking. However, by reason of this
invention considerable spalling may take place
45 without interferingseriously with the operation
of the burner or retort, for the bricks are pref
erably bonded to each other by the intervening
‘layers of mortar and are pressed tightly against
each other, and moreover, are supported inde
pendently of the retort.
It will further be noted that the mantle of this
invention does not require or depend upon any ‘
\ metal shell for support of the bricks and does not
require any such metal shell at the place where
55 it would be subjected to the high heat of the burn
er ?ames and hence a retoriLJnay_be provided‘
many times with a mantle of new bricks or any
of the bricks of the mantle may be replaced inde
pendently of the others if and when desired. ~
60
The higher sintering machine efficiencies made
possible by this invention are traceable to the
fact that the present invention eliminates metal
shells from the mantle and thus permits the lower
side of the mantle to be maintained close to the
65 upper edge of the moving pallets,_-one of which
pressing said bricks against each other when in
' assembled position.
6. A burner for a sintering machine of the con
tinuous type having ?ame outlets in the lower
portion thereof, means for suspending the retort ,
above pallets of a continuous type sintering ma
chine, parallel rods~,supported' by the retort sup 45
porting means and swingably carrying brick
hangers thereon, bricks individually supported on
said hangers'and constituting the side walls of
the mantle for the said retort outlets, cross
rods supported by the retort supporting means
and swingably carrying end brick hangers, end
bricks on said end brick hangers and constituting
the end walls of said mantle, and means for
pressing the said end bricks against the rows of
side bricks and the side bricks against each other. 65
. 7. A mantle for a sintering machine retort com
prising opposed rows of bricks ‘having ?ame pas
sages therebetween and means for swingably sup- ,
porting said bricks independently of each other.
8. A mantle for a sintering machine retort com
prising opposed rows of bricks having ?ame pas
sages therebetween, bricks at the ends of said
rows, and means swingably supporting each of
the bricks of said mantle independently of each
other.
/
‘
65
is shown in outline in Fig. i, where it is designated
9. A mantle for a sintering machine retort com
by reference character A. ‘When the space be
prising T-shaped, brick, supporting hangers, op
tween the mantle and the pallets is large, con
posed rows of bricks having .?ame passages there
siderable quantities of ?ame and heat can escape between and having openings in their upper por
70 thru this space and the effectiveness of the ?ame, - tions to receive said hangers, and means for.
as regards ignition of the charge, is thus de
pressing the bricks of said rows against each
creased. With the present invention this loss other.
'
is reduced considerably as compared with prior
RALPH B.v HORN;
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