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Патент USA US2123593

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July 12, 1938.
Filed ‘Feb; 6, 1937
2 Sheets-Sheet 1
Makf‘aeZ Kayak/0499mm?!”
July 12, 1938.
' 2,123,593
Fiied Feb. 6, 1937
2 Sheets-Sheet 2
Mz)%ae& @eh/Eyewem
Patented July 12, 12938
2,123,593 -
Mikael Vogel-Jorgensen, Frederihsberg, near 00-
penhagenslienmark, assignor to F. L. Smidth
& 00., New York, N. Y., a corporation of New
Application February 8. 1937, Serial No. 124,512
In Great Britain I'Gbl'llll'! 8, 1936
1 Claims.‘ (01. zss-ss)
In Letters Patent of the United States No.
2,024,453 dated December 17, 1935 and granted
to F. L. Smidth & Co. of New York, N. Y., the
‘ present assignee, as theassignee of Mikael Vogel
, Jorgensen, the present applicant, there is shown
and described an apparatus comprising a drum;
like carrier upon the‘ gas permeable periphery
of which the material to be treated, such as ?nely
I , divided cement‘ material, or other raw material
roller or lip or bar. In accordance with the in
vention provision- is also made for preventing
the falling of the mass from the carrier under
the in?uence of gravity ‘until the treatment of
the mass has been completed and also for the 5
maintenance'of a negative pressure or partial _,‘_
vacuum within the carrier‘ to hold the mass
against the surface of the carrier and to break
such partial vacuum in order‘ to permit the dis
10 which‘may be treated with-gases, is deposited at ' charge of the broken mass- from the'carrie'r at 10
one point in the rotation of the drum, is held’ the predetermined point of discharge.
The invention will be more fully explained
thereon in part by the diiiferentiai of air pres
sures at the surface of the mass ontthe drum hereinafter, with reference to the accompanying
‘and on the other surface of the drum and is r ' drawings in which it is illustrated,‘ and in which:
Figure 1 is a partly diagrammatic view in sec- 15 '1
,‘ ; discharged therefrom at another point in the ro
tation of‘ the drum where the pressures are
equalized, the mass of material being then dis
charged irom the drum by the action of gravity.
In the continued use of such‘ apparatus andlin its
” adaptation to diverse uses in industry and par
tional elevation of a simpli?ed form of the ap
paratus, from which are ‘omitted details of con
struction which will be referred to. _
ticularly in the metallurgical and cement indus-
Figures 2, _3 and 4 are detail vie s of diiierent
types of auxiliary supporting devices.
Figure-5 is a view in longitudinal section of a
e?icient in operation.
'ing shown in elevation, the upperright hand
tries ‘it has been found‘ that while retaining the._ form'of apparatus whichembodies the invengeneral principle of operation disclosed in said‘ tion, including- such appurtenances as are to be
Letters Patent some ‘modi?cations in structure described.
Figure 6 is a view of the apparatus in ‘partly as
' ; have been found desirable and-it has been the
object of the present invention to provide an ap ,sectional elevation as seen from the right hand
paratus of the same general type which is more in Figure 5, the lower right hand quadrant be
The development oi’ the present invention has quadrant vbeing‘ shown in section on the broken
line 6-4 of Figure 5, ‘and theremainder of the
so been particularly concerned with the attemper
ing or sintering of ores, but it will be obvious. apparatus being shown in outline.
Flgure 7 is a‘ view in end elevation as seen
as this description proceeds that the invention
is' capable of. applicationto other speci?c uses from‘ the left hand on the line ‘l-.-'|>_of Fig
also with improved results, as for example, the ure 5.
Figure 8 is a detail view, in sectional elevation
3g burning of cement or drying of materials. In
and on a larger scale than Figure 5, of one of the
the particular vembodiment of the invention
shown and described herein the construction is
‘valve actuating mechanisms.
The embodiment of the invention illustrated in
such that a layer of sintered ore is applieddi- . the
drawings is intended primarily for attempert '
rectly to the gas permeablesurface otthe car ,ing or sintering ore. It comprises a grated ro-‘4o
40 rier andv there is then superimposed on the layer
_ another layer of ?nely divided ore or other
tary :drum is having end' plates i- ‘and ii’,_
mounted on a tubular shaft. l= and supporting
outer surface or the second layer the mass of grate bars- _I\1 (a?ording perforations to permit
the second layer is ~ignited and attempering or the passage ‘of air or other gaseous medium)
which are parallel with the axis of the drumQ-is
‘I sintering of the material is eiiected, the sinter
tubular shaft is ‘shown as?closed at one
_ ing being carried on in the continued movement The
of the carrier until the entire mass is homogenized end, as at i', and as receiving tires l1,‘ resting
and formed into a cake whereafter the mass is ' on supporting rollers I‘, and a pulley I‘ through
discharged from the carrier and is broken into which thedrum mayjbe rotated. At its other
the tubular shaft F is connected to an ex- 50
00 small masses capable of being handled readily vend
‘fan i', the tubular shaft‘being' provided‘ '
in the further treatment of the mass, the outer 'with’openings,‘
as at I“, through which the ex
suri'ace of the mass when formed on the carrier
‘ material and by the application of ?ame to the
haust fan is connected with the interior of the
grooves which make it easier for the mass‘ to‘ drum. Radial partitions 8 divide the interior 'ci' '
drum into chambers ‘I and each chamber is 55.
‘at break asit passes at an angle over a’ discharge‘
. being impressed with transverse indentations or '
9,198,598 ‘ ,
iwithachamberl'. againstthematerialonthedrumtocompact
which communicates with the interior’ of the’
the same. The roller 4 is provided at its ends
shaft I0 through the openings In. The interior 'with ?anges 4b which separate the material on
of each chamber of the drum may thus be placed the drum, at least at its surface, from the end
in communication with the tubular shaft Ic and ‘
walls I‘ and Ib of the drum. The roller l'is also"
the exhaust fan II.
provided with blades 4° which, as the roller ro-'
Each port‘ ! is controlled by a, disc valve I‘ tates through frictional contact with thematerial
mounted on a stem 8“ and normally closed by a
the drum, are pressed into the material on '
spring 8‘? in a spring housing 8‘. Outside of the --on
drum and mark it with transverse grooves, as
I. housing the stem of_the valve, which may be
at 4'1, which facilitate the breaking of the cake of 10
1squared to be held from rotation, is- armed with‘ material as it is discharged from the drum.
.a?ange l‘andaroller llwhich coactsln the
It will be understood that when the material
rotation of the drum with a cam rail I‘, whereby is first placed upon the drum and passes beyond
at the propertime in the rotation of the drum
the valve 8- is forced from its seat and the interior
or the chamber is placed in communication with
7 the tubular shaft
l° and the exhaust fan I‘.
the pressure roller 4 and- approaches the vertical
axis of the drum in the upper arc of its movement
it will be held to the drum throughout the upper
I are by its own weight as well as by the suction
‘~ A stepped bell crank lever I“, pivoted at h‘, which, is applied to the interior of the drum
coacts with the flange 8' to. hold the valve I‘ through-the opening of the ports 8. when ‘the
from its seat after the roller 8‘ has left the cam , material has passed in the clockwise rotation of
rail‘! until the upper arm of the'bell crank de
the drum beyond ‘the upper arc the in?uence of
tent in coacts with a cam rail 8*, thereby dis
gravity in holding the material on the drum is
engaging the detent from the ?ange Ie and per
‘diminished and lost and it might be that in the
:nitting the valve I‘ to be closed by thespring drying out and heating of the material the ma
terial might fall away from the drum during its 25
_ In the opposite end wallof each chamber 1 is movement through the lower arc of rotation.
a portll forthewdmissionofairtotheohamber‘ Accordingly there is provided an auxiliary or sup
'.for the purpose of breaking at the proper time plemental support for nullifying the e?ect of
the partial vacuum‘ which has been created in gravity on the material during the lower arc of
the chamber by the action of the exhaust vfan I“. movement of the drum and preventing such un 30
This port II is controlled in the same manner as desirable action. As shown in Figures 1, 2. and
already described with respect to the port 8 by a 3 such supplemental support consists of an end
. valve ll‘, held normally closed bya spring llc and - less gas permeable belt ll carried on rollers l2,
,opened undercontrol of a detent llh by theco
l3, l4 and IS, the roller I! being connected by a
action of a roller Il‘and a cam rail 8i‘ and closed chain l6 to a counter-weight I‘! for the purpose
again when detent II11 is disengaged from ?ange of maintaining the chain belt II in contact with 35
llc by coaction with a cam rail Ill‘. Each valve the material. Such chain belt may consist of
controlling mechanism, for the admission of- air bars l8 flexibly connected by wires or chains It,
to each chamber 1, may be' in all respects pre _as shown in Figure 2, or by rollers 20, connected
cisely similar to the valve controlling mechanism by chains 2|, as shown in Figure 3. This'auxil
' for the port 8 and therefore need not be described
Pro-sintered material is supplied through a
chute 2 to thegas permeable surface of the grated
iary support might also be formed of v rollers I!
linked together by chains 13, so that each roller
may rotate on its own axis while held in contact
45 carrier drum and forms on the peripheral sur- ‘ with the material on the drum.
As the cake of sintered material passes from
faceof the carrier drum a layer which protects. the drum over the-‘belt supporting roller l2 and 45
_ the drum from the destructive action 'of the heat‘ is made thereby to change direction it will break
developed in the attempering or 'sinfering of-the into small pieces facilitated by the indentations. ~
material which is delivered through a chute I and
is superimposed as a layer on the protective layer
above referred to; Line 24 of Figure 1 indicates
the‘ line of demarcation between the protecting
layer of sintered ore and that to be sintered.
This line has beenaindicated as extending som
5.5 what more than half way around the drum and
at the point indicated by'its end the process of
attempering or sintering is presumed tohave been
' completed and the two layers of material amal
gamated as a homogeneous cake 0! thoroughly
In the operation of the apparatus the perfo
rated surface of each chamber ‘I of the drum, as
thedrum rotates in a clockwise direction, re
ceives from the chute 2 a relatively thin protec
tive layer of the pre-sintered material and,imme
diately thereafter receives superimposed on the
protective layer, from the chute 3, the layer of
raw material containing a combustible element or
admixed with a fuel, both layers being compressed
by the roller 4 and marked by the ?anges and
blades of that roller. In the continued movement
- _' of the drum each chamber 1, as it passesbeyond
The raw material itself containing a combust " the vertical plane, is subjected to suction through
ible element or being mixed with fuel and super
the described connection to the exhaust fan, the
' imposed on the protective layer of pre-sinfered ,
valve I. of the chamber being opened by the de
material is subjected to the action of flame from scribedmechanism and held open until the cham- '
65 a burner l, the combustible element being there
ber has-passed through the lowermost position,
by ignited and burning withpsuillcient intensity whereby the cake of material is held to the sur
to eifect a complete sintering of the raw material ‘ face of the chamber by suction or partial vacuum‘
and an amalgamation of the same with the pre
within the-chamber against the action of gravity,
sintered material of the inner layer. The prog
accidental separation of_ the cake from the sur~
ress of the sintering of the material is indicated face of the chamber being further guarded
sintered material.
by the broken line ll of Figure 1.1
against by the auxiliary support ll. As each
chamber passes toward the point of discharge be
layer of raw material mixed with fuel there is
yond the vertical axis'of the drum in the, lower
provided a roller l which is carried by spring- ' arc of its movement the valve 8' is closed by its
‘pressed arms I‘ and thereby pressed'?rmly~ spring‘ (the detent '8!‘ having been disengaged by 76.
coaction with cam rail 8*) , and at that time the
valve 8!9 is( opened by the described mechanism
and air is admitted to the chamber to destroy the
partial vacuum within the chamber; The cake
5 being thus released separates from the surface 0!
the drum and breaks as it moves through the
angle over the roller II. This described action
takes place for each chamber of the drum carrier
and the cake of attempered or sintered homo
10 genized material passes continuously from the
discharge point to be received in a receptacle
preparatory to further treatment in another ap
' . 2. An apparatus as described in claim 1, and in
which each chamber is provided at one end with
an air suction port-and at the other end with an
air inlet port, a valve to control the air suction
port, a valve to control the air inlet port, an
‘means-to actuate the valves. 7
3. An apparatus as described in claim 1, and
in which each chamber is provided at one end i
with an air suction port and at the other end with
an air inlet port, a valve to control the air suction 10
port, a valve to control the air inlet port, springs
enacting with the valve to close the ports, ‘and
means acting on both valves to move .them t
While the invention has been described herein ‘open the ports.
4. An apparatus as described in claim 1, and
15 with particular reference to the use of apparatus
in sintering ores, it will be understood that the , in which eachchamber is provided at one end
invention is not restricted to use' for attempering with an air suction port and at the other‘ end
with an air inlet port, a valveto control, the air
or sintering ores and that the apparatus illus
trated may be- used for burning cement material, suction port, a valve to control the air inlet port,
springs coacting with the valves to close the ports,
or for drying cement materials, or other mate
acting on both valves to move them to open
rials, or for any other process'in which solid
the ports, a detent for each valve to hold the
materials are treated with gases. It will be un
derstood. that ‘various changes may be made in valve from its seat, and means to release both
details of construction and arrangement to suit
5. An apparatus as described in claim 1, and
26 di?erent conditions of use and that, except as
paratus if desired.
pointed out in the accompanying claims, the in
vention is not restricted to the particular con
struction shown and described.
I claim as my invention:
1. An apparatus for the attempering of solid
material comprising a rotary drum‘ provided
in which there is provided an auxiliary gas per
meable support to hold the material against the’
drum and to nullify the effect of gravity on the
material during the lower arc of movement of the
6. An apparatus as described'in claim 1, and
in which there is provided- an auxiliary gas per
with a plurality of radial chambers, each cham
her having a gas permeable peripheral surface. meable support to hold the material againstthe
‘and closed at ‘its end except for an air suction drum, and nullify the chest of gravity on the 35
during the lower arc of movement of
35 port, means to supply material to be treated to the ', material
the drum. the auxiliary support consisting of an
peripheral surface of each chamber as the drum
rotates, means to subject each chamber to suc
tion as it approaches the vertical axis of the
drum in the upper arc of its movement and passes
through the upper arc of movement, means to
terminate the suction as the chamber passes be-'
yond the vertical axis of the drum in the lower
arco! movement and approaches the point of dis-,
charge of the material, each chamber being pro
vided at one end with an air suction port and at
the other end with an air inlet port, and means
toadmit airthroughtheinletport asthecham
.ber approaches the point oi.’ discharge or the
endless gas permeable chain belt, comprising bars
?exibly connected by wires or chains.
7. An apparatus as described in claim 1, and
in which there is provided an auxiliary gas per- ’
meable support to hold the material against the
drum and nullify the effect of gravity on the
material during the lower arc of movement of the
drum, the auxiliary support consisting of inter
linked rollers, said rollers rotating on their own
axes while held in contact with
material on
the‘ drum.
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