the Manufacture or Treatment of Cement and other Materials.
Year: 1885

page_text: the Manufacture or Treatment of Cement and other Materials.
I, COURTENAY KINGSFORD, of Aulaby House, Upper Clapton in the County
of Middlesex, Manufacturing Chemist, do hereby declare the nature of my inven-
tion for "IMPROVEMENTS IN DRYING OR EVAPORATING APPARATUS FOR USE IN
THE MANUFACTURE AND TREATMENT OF CEMENT AND OTHER MATERIALS" to be as
follows:-
My present invention relates to a special form or modification of apparatus of
the class described in the specification of my former Letters Patent dated
September 13 A.D. 1884 N° 12379. In the said specification I have described an
apparatus for drying, evaporating, and calcining various materials by the waste
heat from a coke-oven or other furnace with which the said apparatus could be
combined or connected.
I now provide for utilizing more economically and advantageously than heretofore
the waste heat of an oven or furnace by combining an apparatus somewhat similar
to that described in the said former specification with coke ovens and a steam
boiler or generator as herein described. I thereby provide an apparatus which
comprises within itself. means for making coke in combination with means for
generating steam and for drying cement or for similar purposes by the heat
generated in the manufacture of the coke.
.
I prefer to use a steam boiler or generator such as I have described in the
specification of my former Letters Patent dated March 6th A.D. 1882, Nº 1078.
I arrange this boiler or generator above two coke ovens or similar furnaces so that
the heat from the latter will pass through the flues or tubes of the said boiler.
I find it convenient to arrange the said boiler so that its longitudinal axis is at
right angles to that of the coke ovens or furnaces.
The said ovens or furnaces may be of any desired dimensions; their inner ends
are closed by suitable brickwork or otherwise. Between these ends there is a space
below the central portion of the boiler and separated therefrom by an arch of
refractory brickwork; I utilize this space for the reception of a tray, pan or shelf,
or two or more of the same, to form a receptacle or receptacles for the cement or
other material to be subjected to the evaporating or drying action.
The ends of the ovens or furnaces form the sides of the drying or evaporating
chamber, and in these sides suitable apertures are formed for the entrance of heat.

page_text: from the ovens into the said chamber; the heat and flames thus admitted will pass
under and over the trays or receptacles, and will thus act most effectually upon the
materials placed therein.
The said trays or receptacles are arranged so that they may be withdrawn from,
and replaced in, the drying chamber; therefore the filling and emptying of the said
receptacles can be quickly and conveniently effected.
In some instances I construct my improved apparatus with drying or evapora
ting chambers at the sides of the steam-boiler. These chambers are provided with
adjustable trays or receptacles as described with reference to the central chamber.
One very important application or use of my improved apparatus is the drying
of "slurry" that is to say, a mixture of chalk and clay or mud in the manufacture
of cement. But it will be found advantageous for drying, or separating by
evaporation, any materials which can be safely and conveniently exposed to the
waste heat of a coke oven or similar furnace in the manner herein described.
Dated thin 4th day of Tune TOOK

page_text: Improvements in Drying and Evaporating Apparatus for Use in
the Manufacture or Treatment of Cement and other Materials.
I, COURTENAY KINGSFORD, of Aulaby House, Upper Clapton, in the County of
Middlesex, Manufacturing Chemist 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 :-
My present invention relates to a special form or modification of apparatus of
the class described in the specification of my former Letters Patent dated
September 13th A.D. 1884, No 12,379. In the said specification I have described
an apparatus for drying, evaporating or calcining various materials by the waste
heat from a coke oven or other furnace with which the said apparatus can be
combined or connected.
I now provide for utilizing more economically and advantageously than
heretofore the waste-heat of coke-ovens or other furnaces by combining therewith
a steam boiler or generator and means somewhat similar to those described in the
said former specification for drying or similar purposes, as hereinafter described.
I thereby provide an apparatus which comprises within itself means for making
coke, in combination with means for utilizing the heat generated in the manu-
facture of the coke for generating steam and for drying cement or for similar
purposes.
I prefer to use a steam boiler or generator such as I have described in the
specification of my former Letters Patent, dated March 6th, A.D. 1882, No 1078.
My improved apparatus is illustrated in the accompanying drawing, in which
Figure 1 is a vertical longitudinal central section of the said apparatus, and
Figure 2 is a transverse section of the same through the centre of two of the
ovens or furnaces.
A, A are the coke-ovens or furnaces, of which there are two rows or series, and
which may be of any desired dimensions. B is the steam boiler or generator,
which is so arranged above the said coke ovens or furnaces so that the heat from
the latter will pass through the flues or tubes of the said boiler as described in the
aforesaid specification No 1078. I find it most convenient to arrange the said
boiler so that its longitudinal axis is at right angles to the axes of the coke ovens
or furnaces.
The inner ends of the said ovens or furnaces are closed by suitable brickwork
or otherwise, as at A¹. Between these ends there is a space C below the central
portion of the boiler and separated therefrom by an arch C of refractory brickwork.
I utilize this space for the reception of one or more trays, pans or shelves D which
serve as receptacles for the cement or other material to be subjected to the
evaporating or drying action.
The ends A¹ of the ovens or furnaces form the sides of the drying or evaporating
chamber C, and in these sides suitable apertures C are, if required, formed for the
entrance of heat from the ovens into the said chamber; the heat and flames thus
•

page_text: - admitted will pass under and over the trays or receptacles D and will thus act most
effectually upon the materials placed therein.
The said trays or receptacles are so arranged that they may be readily withdrawn
from, and replaced in, the drying or evaporating chamber C; therefore the filling
and emptying of the said receptacles can be quickly and conveniently effected!
The apparatus shewn in the drawing is constructed with drying or evaporating
chambers E at the sides of the boiler B. These chambers are provided with
adjustable trays or receptacles D as above described with reference to the central
chamber C, and are, if desired, connected with the furnaces or flues in any suitable
manner to ensure the passage of the heat therefrom through the said chambers.
But the said chambers E are, in some instances, dispensed with.
.
One very important application or use of my improved apparatus is the drying
of "Slurry" (that is to say a mixture of chalk and clay or mud) in the manu-
facture of cement. But it will be found advantageous for drying or separating
by evaporation any materials which can be safely and conveniently exposed to the
waste heat of a coke oven or similar furnace in the manner herein described.
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:
The improved apparatus comprising a steam boiler or generator, and one or more
drying or evaporating chambers constructed and arranged in combination with coke-
ovens or other furnaces, substantially as, and for the purposes, above set forth.