IMPROVEMENTS IN KILNS AND OTHER STRUCTURES EMPLOYED IN THE MANU- FACTURE OF LIME AND CEMENT to be as follows:
Year: 1885

page_text: Manufacture of Lime and Cement.
I MATTHEW BEAUMONT PARRINGTON of Holborough near Rochester in the
County of Kent Gentleman, do hereby declare the nature of my invention for
"IMPROVEMENTS IN KILNS AND OTHER STRUCTURES EMPLOYED IN THE MANU-
FACTURE OF LIME AND CEMENT to be as follows:-
"
This invention has for its object improvements in kilns and other structures
employed in the manufacture of lime and cement.
For the burning of cement and lime large quantities of coke are required.-
I combine the ovens in which the coke is produced with the kilns in which the
materials are burnt and I utilize the waste heat from the coke ovens both to dry
the materials and afterwards to burn them.
.
For producing cement the coke ovens are erected in two ranges parallel the one
to the other and with a space between. The cement kilns are also built in two
parallel ranges within the space between the coke ovens leaving a central roadway
giving access to the kilns for the removal of the cement when burnt.
The whole is roofed over and above each range of coke ovens there is a drying
floor. There is also a third drying floor over the cement kilns.
The heated products from the coke ovens pass into a flue which runs from end
to end of the structures between the ovens and the kilns. There are two such
flues one on either side. From these flues passages provided with dampers open
into the kilns at the bottom so that the heat from the ovens can be turned into
the kilns whenever required and all smoke can be consumed by turning it through
hot kilns.
The heated products from the kilns escape by an opening near the top and
immediately beneath the upper drying floor.-The fuel requisite for burning is
mixed with the slurry before it is placed on the drying floors and in loading the
kilns the material from the lower drying floors is first put in through side openings
and the kiln is then filled up with material from the upper drying floor.

page_text: Filling holes are provided for this purpose in the upper drying floor and these
directly communicate with the kilns beneath.
By this mode of filling a great quantity of labour is saved.
These filling holes are provided with covers.
I sometimes also arrange steam boilers in the space beneath the upper drying
floor to which the heated products from the kilns have access.
I employ a similar arrangement of plant in lime burning I place a row of coke
ovens at the back of each row of lime kilns with a continuous flue and dampers to
each kiln so that all waste heat from the coke ovens can be passed through kilns
ready filled with chalk thereby drying them ready for burning which under the
present mode has to be done at a great expense of fuel.
I entirely do away with domes at top of kilns and substitute a system of flues
and dampers by which all smoke can be passed through hot kilns before it reaches
the shaft thereby consuming it.
Over the coke ovens is a hot floor covered in by a roof where all chalk from
pits is deposited ready for being placed in kilns for burning. I provide a shaft at
each end of each row of kilns,

page_text: Manufacture of Lime and Cement.
I MATTHEW BEAUMONT PARRINGTON of Holborough near Rochester in the
County of Kent Gentleman do hereby declare the nature of this invention and
in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :—
•
This invention has for its object improvements in kilns and other structures
employed in the manufacture of lime and cement.
For the burning of cement and lime large quantities of coke are required;
I combine the ovens in which the coke is produced with the kilns in which the
materials are burnt and I utilize the waste heat from the coke ovens both to dry
the materials and afterwards to burn them.
For producing cement the coke ovens are erected in two ranges parallel the one
to the other and with a space between. The cement kilns are also built in two
parallel ranges within the space between the coke ovens leaving a central roadway
giving access to the kilns for the removal of the cement when burnt.
The whole is roofed over and above each range of coke ovens there is a drying
floor. There is also a third drying floor over the cement kilns.
The heated products from the coke ovens pass into a flue which runs from end
to end of the structure between the ovens and the kilns. There are two sucli
flues one on either side. From these flues passages provided with dampers open
into the kilns at the bottom so that the heat from the ovens can be turned into
the kilns whenever required and all smoke can be consumed by turning it through
hot kilns.
The heated products from the kilns escape by an opening near the top and
immediately beneath the upper drying floor. The fuel requisite for burning is
mixed with the slurry before it is placed on the drying floors and in loading the
kilns the material from the lower drying floors is first put in through side openings
and the kiln is then filled up with material from the upper drying Hoor.
Filling holes are provided for this purpose in the upper drying floor and these
directly communicate with the kilns beneath.
By this mode of filling a great quantity of labour is saved.
These filling holes are provided with covers.
I sometimes also arrange steam boilers in the space beneath the upper drying
floor to which the heated products from the kilns have access.
I employ a similar arrangement of plant in lime burning, I place a row of coke
ovens at the back of each row of lime kilns with a continuous flue, and dampers to
each kiln so that all waste heat from the coke ovens can be passed through kilna
ready filled with chalk thereby drying them ready for burning which under the
present mode has to be done at a great expense of fuel.

page_text: I entirely do away with domes at top of kilns and substitute a system of flues
and dampers by which all smoke can be passed through hot kilns before it reaches
the shaft thereby consuming it.
Over the coke ovens is a hot floor covered in by a roof where all chalk from
pite is deposited ready for being placed in kilns for burning. I provide a shaft at
each end of each row of kilns.
In order that my said invention may be most fully understood and readily into
effect I will proceed to describe the drawings hereunto annexed.
each end of each row of kilns.
In order that my said invention may be most fully understood and readily into
effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a ground plan of my arrangement of kilns for the manufacture of
cement.
Figure 2 is a vertical section of the same.
Figure 3 shows a modification of the arrangement.
Figure 4 is a ground plan of a range of coke ovens and lime kilns arranged and
combined in accordance with my invention.
Figure 5 is a vertical transverse section of these kilns.
Figure 6 is a longitudinal and vertical section taken through some of the
lime kilns.
Figure 7 is a horizontal section taken near the upper part of the lime kilns and
shewing the flues which are.there arranged.
In figure 1 and 2 A, A, are the coke ovens and B. B are the cement kilns C is
the road or hatch way between the two double ranges of kilns it is covered over by
an arch, as the drawing indicates D D is the roofing which covers the whole
E, E are drying floors over the coke ovens A. F is another drying floor above
the cement kilns and heated by them G, G are flues which receive the heated
products from the coke ovens. G1, G¹, are passages leading from these flues into
the cement kilns B. The gases from the flue G enter the bottom of the kiln
between iron bars forming a grating upon which the contents of the kiln are
supported the kiln is in the first place lighted in the usual way and it does not
receive the products of combustion from the coke ovens until it is sufficiently
hot to insure that the smoke shall be consumed in its passage upwards through the
cement kiln B, B', are openings near the upper part of the cement kilns by which
the heated vapour and gases escape from them to pass beneath the drying floor F
the space beneath this drying floor and the upper arch H affords free circulation
for the heated products and when the greater part of the heat has been imparted
to the drying floor the gases pass from beneath the floor into the main shaft I.
As already mentioned the slurry or cement making material in the moist state
is mixed with the fuel requisite from burning in the kilns B and is then spread on
the drying floors. From these floors the dried slurry is charged into the kiln the
burnt cement is drawn at the drawing holes B' B¹. K K are small shafts by
which the products from the coke ovens can when desired be allowed to escape
without traversing the cement kilns.
In Figure 3 steam boilers L L are shown arranged in the space between the
lower arch covering the roadway C and the upper arch H Flues passages M M
are provided leading the products of combustion from the kilns into this space and
around the boilers and after circulating around the boilers the gases enter the main
shaft I.
In Figures 4, 5, 6 and 7 N, N are the coke ovens O is the main flue receiving
the products of combustion from the ovens. PP are passages controlled by
dampers by which the products from the coke ovens can at will be directed into
any one of the lime kilns in the same range. QQ are the lime kilns Q¹¹are
firing holes at the lower part of the same Q is the charging aperture it is bricked
up when the kiln is ready for burning. Q3 Q3 are the drawing apertures. The
products from the coke ovens are directed into the kilns Q when these are already

page_text: Bufficiently heated to insure the complete combustion of the smoke from the coke
ovens. The gases ascend up through the lime kilns and then pass by passages Q*
which also are provided with dampers into a main flue R connected with chimney
stacks at either end.
The flues Q are so arranged that the products of combustion which have already
ascended through one of the lime kilns, can if desired, he passed through the upper
part of another kiln or kilns on the way to the chimney stack S. T. T. are the
drying floors over the coke ovens N. On these floors the chalk as it comes from
the pit is deposited and there it is left until it is sufficiently dry to be advan-
tageously used in charging the kilns. U is an elevated tram road for the
conveyance of the chalk; V is a roof over the coke ovens; it serves both to
economise heat and to protect from rain the chalk which is spread upon the
drying floors.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:
1. The combination of coke ovens with cement kilns and drying floors substan-
tially as herein described and so that the products from the coke ovens can be
passed upwards through the cement kilns.
2. The combination of coke ovens with lime kilns substantially as described and
so that the products from the coke ovens can be passed upwards through the lime
kilns.
3. My improved kilos and structures employed in the manufacture of lime and
cement, substantially as described and represented by the annexed drawings.
Dated this 2nd der of June 1886