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Патент USA US2132984

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Oct. 11, 1938;
A. A. CHANEY
_
2,132,984
SLURRY DRIER ‘FOR CEMENT PLANTS
Filed May 22, 1934
3 Sheets-Sheet 1
INVENTOR
BY
ATTORNEY
‘Oct. 11, 1938..
A. A. CHANEY
' 2,132,934
SLURRY DRIVER FOR CEMENT PLANTS
Filed May 22, 1934
BY
3 Sheets-Sheet 2
QQZX)AQ.¢
ATTORNEY
Old; 11, 1938.
A. A. CHANEY
2,132,984
SLURRY DRIER FOR CEMENT PLANTS
Filed May 22, 1934
'
5 Sheets-Sheet 3
K
.
.
AW‘ZIWNTOR
ATfonNsY
Patented Oct. 11, 1938v
2,132,981
UNITED STATES “PATENT OFF-ICE
2.132384
sL'URRY DRIER. FOR. ‘CEMENT PLANTS
'
AlphaA. Chaney, Fort .Worth, Tex.
I
Application May 223934, Serial No. 726;893
'
2 Claims.
This invention relates to the manufacture of
cement and it has particular reference to ma
jchine'ry especially adapted‘ to operate'between a
kiln and its stack ‘wherein slurry, "or hydraulic
(01. 159+!»
'
the revolving tables drivingmechan'ism, and ‘the
spiral-like scraper blade, and ‘
Figure S5 is a "fragmentary elevational view of
‘the conveyor ‘chain, buckets and sprocket for
cement, can be‘ dried and 'pre-heated prior‘toits
driving same.
introduction'into the kiln‘and'its‘principal Object
»~In the manufacture of cement there are at
least two methods of preparing the same for use
_'resides 'in the provision of a combination of ele
"ments whereby such_jslurry can be slowly passed
through 'a processof dehydration and heating by
bringing the material into ‘contact with the hot
blast ‘which emanates from the kiln and escapes
I
5
as isuch'a'n'd which" consist, in substance, of grind
ing the rock and burning in ‘a kiln and, by grind
ing the rock to a ?nely divided mass and mixing 10
‘the materialrhwith water. The present invention‘
is designed for use under'the‘conditions last men
tioned, ‘that of producing cement from ‘a wet
Another object of ‘the invention is- manifest in v mixture.
Under certain conditions it is found most de 15
the provision of such an arrangement of mechani
cal elements as will be capable of so handling the sirable to 2make use of the so-called wet mixture
through the stack into the‘ atmosphere and is
thereby
wasted.
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'
‘
'
‘
‘
‘
slurry as to minimize ther'noisture content of the
mixture to the'extent that the latter requires‘the
minimumvofv treatment after the same has been
delivered to the kiln ~and, ‘since‘the subjection of
the material to'the excess vheat or hot blast pass:
ing from the kiln into the stack substantially
dries the mixture, a great saving in fuel consump
tion can be ‘realized. The manifestation of ‘a
"25 saving in fuel consumption'is also due to the fact
that the slurry is pre-heated .p'riorto its passage
into the kiln.
‘
-
A still further object of the invention resides, in
the provision'of‘me'ch‘anism, as described in‘ the
3O
foregoing, capable of affording ‘greater vfacilities
to obtain "the best results. This fact, however,
'is'well known lin'the art and it is-th'ought unnec
essary to 'here cite the advantages of either
'metho'd'of production.
It has been found, however, that in the use of
the‘i'nethod wherein the mixture is introduced to
:the kiln in a wet state a tremendous amount of
heat is necessary to properly dry and then burn
the material to'produce a high grade product and 25
it follows .that when this great amount‘ of heat is
‘required emuc'h‘of itsvusefulness is lost through
the stack. 'It is, therefore, the primary purpose
'of this invention to make use of this energy by
subjecting the slurry mixture to its drying and ‘ 30
heating possibilities and thus take advantage of
the saving which would result.
5Accordingly, the invention consists primarily
attendant upon the production of cement.
'
While 'the foregoing objects are paramount of a housing I, illustrated more in detail in Fig-_
r other and lesser objects will become manifest as lure 42, which is strengthened on all of its sides by 35
the description proceeds, taken in connection supports -2 1preferably in the form of I-beams.
‘It-is not intended that the walls of the housing I
with the appended drawings wherein:
_
whereby production can be increased and rat a
saving in time, ‘as well as other'important items
Figure 1 is a side elevational view of the inven
tion, having portions cut away, illustrating ‘the
40 manner in which the apparatus is installed be
tween the kilneand the stack and showing the re
volving tables and feeding arrangement.
shouldbe arranged in any particular manner but
the illustration in Figure 2 is deemed to serve the
purpose ‘in a satisfactory manner and, for the ' 40
sake (if clarity, such a structure is'herein de
scribed.
Figure 2 is 'a ‘plan view "of the ‘ invention as
shown in ‘Figure 1, as viewed wwhenpthe top :or
upper portion is removed, and illustrating the
driving mechanism 'forthe revolving tables and
the feeding apparatus, and showing’the‘spiral
'
’
‘
Situated within the. housing I and arranged in
concentric relationship to the walls thereof are a
multiplicity of bands or rings 3 preferably L 45
‘shaped in cross-section, such as angle irons, and
vwhich are supported at numerous points around
their circumference by vertical supports ‘4, pref
'
‘
erably in the form of "I-beams, as shown par
Figure 3 is afragmentary'view'of the manner 'ti'c'ular1y___in Figure ‘2. Each of the rings 3 are
in which the rings' or rim‘ members of the tables I individually securedito the supports ‘'4 me man
ner-‘shown in Figure-3 which consists'in attach
Figure 4 shows '- the "invention in‘ elevation from ing'th'e'ringj to ‘the ‘supports 4 by means of ‘a
the ‘side Yiicli‘m‘ally facing the ‘kiln, 'afsishow'n in bolt ‘5; vor ‘the like, land a sp'a'ce'rili. This ‘ar
like scraper'blade.
are ‘supported.
._
‘
’
0
.
55 Figure 1 {and illustrating the iconvéyoal-aslwel1ias
rraagenient‘rwiliretain the ‘rings '23 in ‘their proper 55
2,132,984
I
_
.
.7
V
,
position, their function to be presently described. ‘pointed out that the cylindrical members [2
The'rings 3 do not form'a complete circle, as
shown in Figure 2, for reasons which will become
manifest shortly in the herein description.
concentrically arranged within the rings 3,
that is to say, axially with respect thereto, is a
vertical shaft 1 which is mounted in bearings 8
and 9, the bearing 8 being secured in the top of
the frame work 2 and the bearing 9 is disposed
10 at the bottom of the assembly as particularly
which extend horizontally along the surface of
the tables II] are provided with slots 26 which
extend from the point e where the cylindrical
members [2 reach the edge of the tables In and
diverges toward the end thereof at‘d. This ar
rangement is shown in Figure 2, and'the func
tion of this slot 26 will be later described.
Situated near the bottom of the shaft 1 and
securely ?xed thereto is a relatively large bevelled
illustrated in Figure 1. Mounted securely upon gear 21, as shown in Figure 1, which rotates the
the shaft 1 is a series of disk-like tables I0 which shaft 1 through a bevelled pinion 28 and the
are capable of revolving with the shaft 1 and shaft 29 driven by a motor133 through a series
whose outer peripheries extend beneath the lat
of reducing assemblies 3|, as illustrated in Fig
erally extending ?ange a of the rings 3, as illus- ' ures
and 4. The reducing assemblies 3! are
trated in Figure
'
,
,
,. .
.
optional, although considered desirablein the
.
the rings3 do not extend completely around‘ the
operation of the herein described invention. It
is found that, best results can be ohtained by
shaft 1, as shown in Figure 4, for the reason that
rotating the tables l0 very slowly.
a means must be provided on one side of the as
As previously stated, the invention is primarily
designed for the purpose of drying slurry or hy
Attention is directed to the fact that each of
'
sembly to permit any commodity of ‘material
placed on the said, tables H] to be dislodged there “ draulic cement, it being found desirable, in some
from,'a more detailed description ofv this function cases, to manufacture'cement in this manner in
will become manifest
another part of this order to ‘bring about a close co-mingling of the
speci?cation.
ingredients and in, order to reduce materially the
As exempli?ed in Figures land 4, the rings 3 fuel consumption necessary for drying and burn
and the tables ID are arranged one uponthe ing the-mixture‘, it is necessary to provide some 7
other, ‘or in superimposed relationship, and a means of dehydrating the said mixture prior to
its introduction intothe kiln. Thus such mate
plurality of such rings 3 and tables Ill are illus
trated. Each of the tables II] are provided with
feeders H which are in turn provided with cyl
indrical members'll extending horizontally to
ward the shaft 1 over each of-the tables In and
within which are rotating ?ight conveyors l3.
35 Feed pipes I2 extending from a feeder box J5
afford a communication between the said box I5
and the tables it), ‘as illustratedin Figures 1 and
4. _ An agitator 15,;such as aflight conveyor, or
the like, is mounted for rotation within the feeder
box IE, as shown in Figure ,4, to agitate and ‘prop
erly distribute the mixture as the latter is passed
, therethrough.
A series of valves I‘! in the pipes
lrl regulate the'flow of the mixture from the
feeder box l5 to the tables l0.
'
rial is delivered from tanks or vats (not shown) 30
to the. feeder box IE from' which it is delivered
through the conduits or feeder'pip‘es 14 to the
tables Ill through the feeders l l and the cylindri- '
cal members 12, previously vdescribed, and evenly
distributed thereby overv the surface of the disk 35
like tables
l0;
-
-
a
"
_
,
As theslurry passes through the pipes M, the
volume of which can be controlled by the valves
l1, it is deposited in the feeders ll, illustrated in
Figure‘l from where it is carried by?ight con
40
veyorsv [3 through the cylindrical members I2
‘and deposited through the slot 26 onto the tables
I (J as the latter rotate. As previouslyv mentioned,
the slot 26 diverges from its beginning at c in the
cylindrical member 12 to the end of the'latter at 45
.‘Each of the tables in are provided with hubs
l8, the latter being secured to the shaft 1 in a d thus affording a proper and even distribution
manner shown in Figure 1. These hubs l8 are‘ of the material over the surface of the tables ‘In.
provided. to support the tables l0 and the weight
As the tables Ill are caused to rotate very
slowly,. requiring approximately thirty minutes
which they are designed to carry and which will
be presently described; Securely attached at b
at one side ofeach of the rings 3
a curved
knife, or scraper l3, which extends substantially
spirally over’ the surface of the table ID as shown
in Figure 2, and terminates on the opposite side
,kiln 32 and the stack 33 in the manner illustrated
"of theshaft
in Figures 1 and 2.v ‘
from the opening provided in the
rings 3, previously described. It must be re
membered that the scrapers l9 are stationary,
being securely attached at b‘ to the rings 3 which
are also stationary, butrtheir opposite ends are
free and terminate, as previously stated, on the
opposite side of the shaft 7 from the openings in
the rings 3. The purpose of this scraper 19 will
become manifest
for each complete rotation thereof, the mixture 50
is subjected, to a very severe heat passing from
the kiln 32 to the stack 33 through the assembly
just'described which is situated intermediate the
'
After the material is deposited on the tables
It], the latter rotating in an anti-clockwise direc
tion, as illustrated by. the arrows in Figure 2,
the knives. or scrapers l9, due to their peculiar
spiral-like shape, gradually urge the material
towards the outer peripheryof the tables I0, and
at the point of opening in the rings 3,,previously
the description proceeds.
described, the material leaves the tables!!! and
Each of the feeders H are driven by pinion 20
and a bevelled gear 21.
The series of bevelled ‘ gears 2| are rigidly
mounted. upon a'vertical shaft 22' which is sup
drops into‘ a trough-like depository34, illustrated
by dotted lines in Figure 1, and which extends
crosswise‘ to the‘ assembly with respect to the
kiln 32, and adjacent to the bottom of the hous
ported bygan I-bearn123 and driven bya bevelled
gear'zli, situated near, the, bottom of the'arssem
bly, as shown in Figure 1, and driven by amotor
ing'l, through'rwhich a chain conveyor 35 oper
ates over sprocket 36 carrying buckets 3'! at
tached atv intervals thereto, as'shown in Figure 5, 70
25,,orthe‘ like, as shown in Figure 2.’ The func
tion, of course, of the shaft 22, bevelled gears 2|
and pinions 20 is to bring about the rotation of
which latter pick up the substantially dry or
the ?ight conveyor 53 arranged within the cylin
drieal member I2, previously described. It is also
deposits the same in the hopper 38 where the
material drops through a chute 39 intorthe kiln
65
dehydrated material and carry it to a point above
the approximate center of the assembly at e and
75
3
2,132,984 '
32, as shown in Figure 1. By the time the mate
rial reaches the hopper 38 and is passed through
the chute 39 approximately all of the moisture
has been driven therefrom and thus it requires
5 ,less heat to properly burn the same in its ?nal
‘process in the kiln 32.
I
The hot blast from the kiln that it is herein
proposed to make use of emanates from the
mouth of the kiln 32 and passes through the hops-s
l0 ing I between the table I0 and rings 3, in the
manner shown by the arrows in Figure 1, and
ed in the upper ‘frame work of the assembly and
others in the lowermost portion thereof, as illus
trated in Figures 1 and 4.
‘
Although the invention hasbeen described with
great particularity, it is manifest that certain
changes and modi?cations may be resorted to
from time to time by those versed in the art and
such changes and modi?cations being considered
within the scope of the appended claims.
10
1. ‘In a slurry drier for cement, a housing, a
contacts the material deposited upon the tables ' shaft vertically arranged through the said hous
ID. A ba?‘le 40 is arranged in the mouth of the ing,_means provided on the lower end of the said
kiln 32, as shown by the dotted lines in Figure '1, shaft rotating the same, a series of superimposed
l5 and another ba?le 3| is positioned on the oppo
disk-like tables secured to the said shaft and ro 15
I claim: ,
site side of the assembly adjacent to the opening tatable therewith, a stationary ring arranged
42 into the stack 33. The battle 3| extends some around the major portion of each of the said
distance under one of the rings 3 and the tables disk-like tables, means cooperating with each
IE to deflect the hot blast, passing in the direc— of the said tables and depositing cement thereon,
20 tion of the arrows previously referred to, back scraping means extending over the upper sur 20
through the assembly toward the side adjacent face of each of the said tables and extending from
to the kiln 32, again passing between the tables one side of the said rings and terminating near
!3 and out through the opening 42 in. the ‘stack the said shaft, the said scraping means urging
33. In this manner the full bene?t of ‘the heat
25 emanating from the kiln is taken advantage of
to dry out and preheat the slurry before the same
is delivered into: the kiln by the conveyor assembly
35, 36, and 31, and the chute 39.
.
'
Again referring to the rings 3, the primary pur
mixture slowly within the con?nes of the housing
I until it is dislodged from the tables III by the
35 scraper I9 which is formed in such a manner as
40 is designated as f.
tables.
'
2. In a slurry drier for cement, a housingfa -
30 pose of these members is to retain the material
on the tables In in theirrotation, yet allowing
the latter to freely rotate under them to move the
to graduate the material toward
riphery of the tables in and are
at an angle with respect to the
in Figures 2 and 4, the lowermost
the said cement from the said tables after the
same has been dried and means permitting the 25
passage of heated air over and between the said
the outer pe
preferably set
upper, surface
edge of which
,
Having further reference to the conveyor ‘as-l
sembly 35, 36 and 31, it is pointed out that four
sprockets 36 are utilized, two of which are mount
vertical shaft extending through the said hous
ing and means ‘rotating the same, a series of su
30
perimposed disk-like tables fixed to the said
shaft. and ‘rotating therewith, a stationary ring
surrounding the major portion of each of the said I
tables providing retention means for the said
slurry, means cooperating with each of the said
tables independently and collectively depositing
slurry thereon, stationary means extending over
the upper surface of each of the said tables urg
ing the dried slurry therefrom as the said tables
rotate and means permitting the ?ow of heated 40
air over and between the said tables drying the
said slurry.»
ALPHA A. CHANEY.
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