Improvements in Machinery or Apparatus for Cooling, and Discharging Slag.
Year: 1890

page_text: Date of Application, 25th Oct., 1890
Complete Specification Left, 24th July, 1891-Accepted, 12th Sept.,. 1891
.
TRUVIDIUNAL DIFICATION.
Improvements in Machinery or Apparatus for Cooling, and
Discharging Slag.
I, WILLIAM TRURAN of the Linthorpe Iron Works, Middlesbrough on Tees, in
the County of York, Engineer, do hereby declare the nature of this invention to
be as follows:
My invention relates to machinery or apparatus to be employed in receiving and
discharging slag after having been drawn from blast furnaces and in cooling the
slag by immersion in water.
The object of my invention is to provide a machine or apparatus which is simple
and durable in its construction and mechanical action and is efficient in cooling slag
by the rapid process of immersion in water.
In a machine or apparatus constructed according to my invention a vertical
pillar or shaft is caused to revolve by the ai of an engine or other prime mover.
Extending radially from this pillar as a centre post so as to be carried round with
it are any convenient number of arms to the outer end of each of which is con-
nected a pan or plate so that when the apparatus is in motion these pans or
plates, follow each other in circular order to receive the molten slag as it falls
from the runner. A tank or cistern of water partially surrounds the apparatus
so that each pan or plate when charged with slag is dipped into it to cool the
slag and is lifted out again to discharge the slag so cooled into trucks provided
at another side of the apparatus. This is effected in the following manner :-
Round the centre post at a suitable distance is provided a circular track to support
the radial arms as they slide or travel over it. At a greater radius is provided
a precisely similar track to support the pans or plates which slide over it; the
radial arms are pivotally attached to the centre post at the inner ends, and the
pans or plates are attached to their outer ends by a shank and eye or equivalent
connection. By dipping down the outer track deep enough into the cistern and
similarly dipping down the inner track at the corresponding part it will be readily.
scen that as the apparatus rotates the arms and pans will change level sufficiently
to dip the pans into the cistern for immersion and lift them out again at the other
end to discharge and refill which operation may be continuous. In order to enable
the pans to discharge their contents at the proper time and place once in each
circuit, the outer track is intercepted at the required part so that each pan as it
comes to the gap so formed looses its support from the track and swings over upon
its shank and eye connection in a suspended position from a radial arm, the shank
and eye being set far enough out of the centre to ensure this result. As soon as
the gap in the outer track is traversed by each pan and the sole of the pan is
brought into contact with the end of the track again it mounts the track which is
curved to assist it and proceeds on its way as before.
Dated this 21th dow of October 1800.
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Cooling and
Discharging Slag.
I, WILLIAM TRURAN, of the Linthorpe Ironworks, Middlesbrough-on-Tees, in
the County of York, Engineer, 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 invention relates to machinery or apparatus to be employed in receiving and
discharging slag as it runs from the blast furnace and in cooling the slag by
immersion in water.
The object of my invention is to provide a machine or apparatus which is simple
and durable in its construction and mechanical action and is efficient in cooling slag
by the rapid process of immersion in water.
In a machine or apparatus constructed for the purposes of my invention a series
of pans or plates follow each other in circular order round a centre post to receive
the molten slag as it falls from the runner. A tank or cistern of water partially
surrounds the apparatus so that each pan or plate is dipped into it and lifted out
again. Provision is also made for tipping each pan or plate once in each circuit
to discharge its contents.
A machine or apparatus constructed for the purposes of my invention as above
described may be modified in various details of construction according to the con-
ditions under which it is worked, but a convenient arrangement and combination of
parts is shown in the drawings, in which
Figure 1 is a plan view of my improved slag cooling apparatus complete in all
its parts.
Figure 2 illustrates the particular form of an outer track or rail for supporting
the slag pans or plates.
Figure 3 is a sectional view of the apparatus as a whole.
Figures 4 and 5 are enlarged sectional views of pans or plates of a convenient
form for receiving and discharging the slag.
In the figures a is the centre post which is caused to revolve by the aid of a
bevel wheel a' and pinion a² driven from an engine or other prime mover. Keyed
onto the centre post a is a centre piece into the recesses of which the radial
arms c are fitted so as to be carried round with it. These radial arms c are
retained in their respective recesses in the centre piece 6 by any convenient means
which admit of their working up and down upon their inner ends as upon a hinge,
as for instance in the manner shown in Figures 1 and 3, in which the inner ends c¹
of the radial arms c are made round and bossed up or furnished with circular
discs fitting into sockets formed behind the distance blocks 61, the spaces between
which are less than the bossed up ends c¹ of the radial bars, the said ends c¹ are
retained in their respective sockets by the cover plate or keep 62, whilst the radial
arms are free to change level by turning on these said inner ends as and for the
purpose hereinafter described.
To the outer end of each radial arm c is attached a pan or plate d so that when
the apparatus is in motion, these pans or plates follow each other in circular order
to receive in succession the molten slag as it falls from the runner e. A tank or
cistern of water partially surrounds the apparatus into which each pan or plate d
descends in the level position to cool the slag by immersion and is lifted out
again to discharge the slag so cooled into trucks provided at another side of the
apparatus.
The tank or cistern f receives a continuous supply of water in the form of jets or
sprays which are directed from the perforated pipe y onto each of the pans d in
succession.
In order to convey the pans d round the centre post a in the manner required to
effect the object of my invention, that is to say, to dip each pan d into the tank f

page_text: after receiving its charge of molten slag from the runner e and to subsequently tip
each pand at the tipping position to discharge its contents in a slag truck placed
for instance as shown in Figure 3, the following provisions are made :-Round the
centre post a at a suitable distance is a circular track h to support the radial arms c
which are furnished with rollers to relieve friction; at a greater radius is
provided a precisely similar track; to carry the pans themselves. By varying the
level of the outer track j and similarly varying the level of the inner track at the
corresponding parts, it will be readily seen that as the apparatus rotates the arms c
and pans d will correspondingly change their level by the action of gravity with
each change of level in the tracks which support them. Consequently by varying
the level of these tracks accordingly, the arms and pans will change level in the manner
required to dip the pans into the tank for immersion and to lift them out again to
be carried above the truck at the tipping position.
Each pan is tipped in succession in the following manner:-Referring to
Figure 4 which illustrates in section a pan or plate for carrying the slag, k is a
single eye for the reception of the outer end m which is shown as a rigid terminal
of the radial arm c.
In Figure 5, the outer end m is jointed to the arm e by a pin and double eye
to accomodate itself more easily to inequalities and obstructions on the outer track.
In each of these pans the eye k is placed in the shoe of the pan sufficiently to one
side of the centre of gravity of the pan and its contents to ensure the pan tilting
over and discharging its contents when deprived of the support of the outer track j
which is intercepted at the tipping position in the manner shown in Figures 1 and 2
to effect this purpose. As soon as this gap in the outer track is traversed by each
pan and the sole of the pan is again brought into contact with the end of the track
it mounts the track which is curved to assist it as shown at in Figure 2; the pan
then proceeds on its way as before. It must be understood that the pans must all
fall to the follower side of the radial arms otherwise the pan instead of mounting
the end of the track would simply foul it and stop the machine.
It will be observed that the apparatus is shown in Figure 3. set at an angle
with the ground line, which has the effect of enabling the apparatus to be worked
in less height and with a reduced oscillation of the ends of the radial arms than
would be the case with the centre post placed in the vertical position, the angle
most favourable for these objects being of course that at which the axis of rotation
of the apparatus is perpendicular to the plane which includes the highest and
lowest positions of the circuit traversed by the slag pans.
Where there is
sufficient height, and the oscillation of the outer ends of the radial arms is not.
material, the centre post may be placed in the vertical position.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly In machinery or apparatus employed for cooling and discharging slag,
the use of pans or plates carried upon arms radiating from a centre post and
supported on guides or tracks so that as the centre post rotates the pans descend in
the level position into a tank for immersion in water, from which they are lifted
out and afterwards tipped over to discharge the slag so cooled into trucks, sub-
stantially as herein before described with reference to the accompanying drawings.
Secondly-The general arrangement and combination of parts constituting
machinery or apparatus for cooling and discharging slag, all combined and
operating together, substantially as herein before described with reference to the
accompanying drawings.
TI 1001
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.