Improvement in Appliances for Dealing with Molten Iron from the Blast Furnace for use in the Production of Castings.
Year: 1898

page_text: Improvement in Appliances for Dealing with Molten Iron from the
Blast Furnace for use in the Production of Castings.
GEOFFREY MEINERTZHAGEN JACKSON, of Clay Cross, in the County of Derby,
Iron Works Manager, do hereby declare the nature of this invention to be as
follows:-
A cylindrical or other convenient shaped iron vessel lined with refractory
material, covered, and provided with an opening for the introduction of the molten
metal, and also openings at different levels from which the metal can be drawn
or tapped, is kept heated by a jet of gas & hot air, so as to keep up the temperature
of the metal and also assist in melting any additions of pig iron that may be
required to be added to it to produce castings of the required quality.
To heat the air required for the combustion of the gas, the air supply is passed
through pipes arranged in the lower part of the chimney which carrics off the pro-
ducts of combustion. At the exit of the products of combustion from the vessel,
and at the base of the chimney is a chamber in which pig iron can be placed so as
to be heated by the waste gases prior to being placed in the bath of molten metal
and so facilitate the melting of the pig when required for mixing.
Improvements in Appliances for Dealing with Molten Iron from the
Blast Furnace for use in the Production of Castings.
I, GEOFFREY MEINERTZHAGEN JACKSON, of Clay Cross, near Chesterfield, in the
County of Derby, Gentleman, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
A wrought iron vessel lined with refractory material is placed in a convenient
position for receiving molten iron from the blast furnaces, and being supported
upon trunnions; can, by means of hydraulic or other power be tipped up so as to
transfer any portion of its contents into ladles for use in the foundry.

page_text: The upper portion of the vessel is provided with inlet and outlet connections for
introducing a jet of gas and heated air so as to first heat up the vessel before in-
troducing the molten iron; and afterwards to keep the iron at the required tem-
perature. The waste heat from the vessel is conveyed first into a chamber where
scrap or pig metal may be heated for mixing with the molten metal, and afterwards is
conveyed over a coil of pipes through which the air passes on its way to the gas
jet; thus heating the air and enabling a higher temperature to be obtained in the
vessel.
In order that my invention may be more clearly understood and more readily
carried out and into effect, I have appended hereunto two sheets of drawings where-
on:-
Figure 1 represents a side elevation of my improved appliance.
Figure 2 represents an end elevation of the same arrangement.
Similar letters of reference refer to similar parts throughout the various figures.
In these figures A is a wrought iron vessel-which can be made in any suitable
form and which is lined with refractory material A 2. This vessel is supported
on two trunnions B, B, in such a manner that it can be tipped or inclined thereon
by the action of a ram or piston in the hydraulic cylinder C, and connecting
links D, D, or by other suitable means so as to allow any portion of the molten
metal therein to be discharged into ladles or other receptacles for use in foundries,
or elsewhere.
The vessel A is provided with a cover A. 1, to which is fixed at one end the mixing
chamber X, and suitable quantities of gas and heated air are admitted thereby into
the vessel A; the gas passing from the main F by means of pipes F1, and the air
under pressure passing from the main pipe E, pipes E1, and coils E2, in the
chimney H; both gas and air thus meet in the mixing chamber X, form a jet
of high temperature which passes into the vessel A for heating the same and
afterwards to maintain the molten metal at the required temperature.
The waste gases are conveyed from the chamber A. by the passage G to the
chamber or chimney H, in the lower part of which I place scrap or pig metal
through which the waste gases pass and give off a portion of their heat before they
come in contact with the air coils E2, which are placed higher up in the chamber
H: the gases finally escaping up the chimney into the atmosphere.
. O
When the vessel is tipped for discharging the molten metal therefrom, the
waste gases pass away into the chimney by the passage K; and the pipes E 1 and F 1
being fitted with suitable turning joints, air and gas can be admitted into the
vessel A as desired, in whatever position the vessel may be in.
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:-
1st. In appliances for dealing with molten metal, the combination of a vessel for
holding the molten metal as it comes from the blast furnaces, with a jet or cur-
rent of air and gas at a high temperature for heating the vessel and the molten
metal therein so as to purify the same and thus produce castings therefrom of the
required quality, all substantially as described herein and shown on the drawings.
2nd. In appliances such as are mentioned in the first claim, passing a current
of air and gas at a high temperature along the surface of molten metal in a vessel
which may be tipped or inclined as desired for discharging the metal therefrom in
a purified state; all for the purposes herein set forth and described, and as shewn
upon the annexed drawings.
3rd. In appliances such as are mentioned in the first and second claims above,
the combination of a vessel containing molten metal, a high temperature gas and
air current or jet passing along same with a chamber holding pig and scrap iron
and a coil of pipes through all of which the waste gases pass after leaving the
vessel; all for the purposes herein set forth and as shown on the drawings herewith.

page_text: 4th. The arrangement and combination of parts as shewn in Figures 1 and 2
attached hereunto for the purposes mentioned and substantially as herein before
described and shown on the drawings herewith.
1
1
1
T
1900
Witness to the signature of G. M. Jackson,
JOHN STEER.
Clay Cross.
G. M. JACKSON.