IMPROVEMENTS IN THE PROCESS AND APPARATUS FOR MAKING STEEL WITH OPEN-HEARTH FURNACES
Year: 1884

page_text: I, JAMES RILEY, General Manager, to The Steel Company of Scotland, Limited,
of 150 Hope Street, Glasgow, in the County of Lanark, North Britain, do hereby
declare the nature of my said invention for "IMPROVEMENTS IN THE PROCESS
AND APPARATUS FOR MAKING STEEL WITH OPEN-HEARTH FURNACES," to be as
follows, that is to say :-
My said Invention has for its object to diminish the waste or loss of steel (or the
cost of recovering the same) which ordinarily occurs through the retention of the
steel by the slag when a charge is run off from the furnace; and my improvements
also secure other practical advantages.
In carrying out my Invention instead of running off the slag or the larger part
of it into a pit or pool after having run the molten steel into the ladle, I cause
the whole of the slag to run into the ladle, and I provide or make the ladle with an
overflow spout for the slag to pass off by immediately after entering the. ladle.
With the pouring action and the short stay of the slag in the ladle, the small
quantity of steel mixed with or entangled in the slag descends into the molten
steel below, and the overflowing slag passes off practically free, from steel. The
overflowing slag is not allowed to run into a pit or pool but moulds or other
convenient receptacles are provided for receiving it and for conveniently carrying
it away to any suitable place, considerable expense in getting the slag out of the pit.
being thereby saved.
The part of my Invention which has been herein before described is advantageously
applicable with ladles of various kinds; I however prefer in carrying it out to
employ a primary ladle into which the charge of a furnace is first run and from
which the steel is delivered to one or more secondary ladles to be by the latter
distributed to the ingot moulds, the pouring into the secondary ladle or ladles
improving the steel and rendering it less liable to become honeycombed in the
ingot. The primary ladle may very advantageously be a ladle on a truck or
carriage such as is described in the Provisional Specification relative to my
Application for a Patent, officially numbered 9565 of 1884, and whether it be used
in connection with one or more furnaces bydraulic apparatus for tipping or raising
and tipping the ladle is by preference provided as described in the said Provisional
Specification.
Dated this twento.gemond day of Sentember 1884.

page_text: COMPLETE SPECIFICATION.
I, JAMES RILEY, General Manager to The Steel Company of Scotland, Limited,
of 150 Hope Street, Glasgow, in the County of Lanark, North Britain, do hereby
declare the nature of my said invention for "IMPROVEMENTS IN THE PROCESS
AND APPARATUS FOR MAKING STEEL WITH OPEN-HEARTH FURNACES" and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement, that is to say :-
My said Invention has for its object to diminish the waste or loss of steel (or the
cost of recovering the same) which ordinarily occurs through the retention of steel
by the slag when a charge is run off from the furnace, and my improvements also
secure other practical advantages.
In carrying out my Invention, instead of running off the slag or the larger part
of it into a pit or pool after having run the molten steel into the ladle, I cause the
whole of the slag to run into the ladle, and I provide or make the ladle with an
overflow spout for the slag to pass off by immediately after entering the ladle.
With the pouring action and the short stay of the slag in the ladle the small
quantity of steel mixed with or entangled in the slag descends into the molten steel
below, and the overflowing slag passes off practically free from steel. The over-
flowing slag is not allowed to run into a pit or pool but moulds or other convenient
receptacles are provided for receiving it and for conveniently carrying it away to
any suitable place, considerable expense in getting the alag out of the pit being
thereby saved.
The part of my Invention which has been herein before described is advantageously
applicable with ladles of various kinds; I however prefer in carrying it out to
employ a primary ladle into which the charge of a furnace is first run and from
which the steel is delivered to one or more secondary ladles to be by the latter
distributed to the ingot moulds, the pouring into the secondary ladie or ladles
improving the steel and rendering it less liable to become honeycombed in the
ingot. The primary ladle may very advantageously be a ladle on a truck or
carriage such as is described in the Complete Specification relative to my
Application for a Patent, officially numbered 9565 of 1884, and whether it be
used in connection with one or more furnaces hydraulic apparatus for tipping or
raising and tipping the ladle is by preference provided as described in the said
Complete Specification.
An arrangement of primary ladle for carrying out my Invention is shown on the
accompanying sheet of explanatory drawings, figure, 1, being a plan and figure, 2,
a side elevation.
The ladle, L, shown in these figures is mounted on a truck, T; and in addition
to the usual pouring lip, P, from which the molten steel is to be poured into one or
more secondary ladles, this primary ladle, L, is made with a spout, S, from which
the slag may overflow when allowed to run into the ladle in the manner herein-
before described. A mould, M, is provided for receiving the overflowing slag, being
set upon the truck, T, in a seat provided for it and being made with sides inclining
inwards so that the block of slag may be easily tipped out of it when solidified.

page_text: 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 system of running all or most of the slag of the charge of an open-hearth
steel-making furnace into the ladle with and after the molten steel and of causing
the slag to overflow from the ladle substantially as and for the purposes herein-
before described.
2-The system of first running the steel from an open-hearth steel-making
furnace into a primary ladle into which also all or most of the slag is also run,
and subsequently running the steel into one or more seccondary ladles substantially
as and for the purposes herein before described.
3-The construction of ladle with overflow spout for slag combined with the
truck and slag mould substantially as and for the purposes hereinbefore described.
Dated this eleventh day of June 1885.
EDMUND HUNT,.
Applicant's Agent.