A Process for the Elimination of Sulphur and Phosphorus from Molten Iron or Steel.
Year: 1892

page_text: Date of Application, 2nd Nov., 1892
Complete Specification Left. 23rd May, 1893-4ccepted, 9th Sept., 1893
PROVISIONAL SPECIFICATION.
A Process for the Elimination of Sulphur and Phosphorus from
Molten Iron or Steel.
HENRY JOSHUA PHILLIPS Swindon House Leytonstone Essex, Analyst,
Metallurgist and Assayer do hereby declare the nature of this invention to be as
follows
This invention consists in forcing by a blast of air through molten iron or steel,
one or more of the desulphurising and dephosphorising agents, such as: :-lime,
oxide of manganese limestone, chalk, magnesia, chloride of calcium, chloride of
manganese, dolomite, carbouate of barium or witherite, carbonate of magnesia,
fluoride of calcium or fluor spar, barium monoxide, or baryta, barium dioxide,
sodium chloride, or common salt.
The principle of the process consists in the combination of the sulphur and
phosphorus present in the iron or steel with the desulphurising & dephosphorising
agents used, forming light compounds which are partly ejected by the blast and
partly remain on the surface of the metal.
The aforesaid process is more particularly applicable to rid molten iron of
sulphur and phosphorus while under the (or near the completion of the) process of
decarburisation and desiliconisation of iron in the Bessemer converter as used in
the well known process of Bessemer's for the conversion of cast iron into malleable
iron or steel. The forcing of the above mentioned desulphurising and dephos-
phorising agents through the molten metal may be produced by any of the well
known methods of injection or otherwise.
Dated this 2nd day of November 1892.
HENRY JOSHUA PHILLIPS.
COMPLETE SPECIFICATION.
A Process for the Elimination of Sulphur and Phosphorus from
Molten Iron or Steel.
HENRY JOSHUA PHILLIPS Church House Ebbw Vale Monmouthshire, Analyst
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 consists in forcing by a blast of air through molten iron or steel
one or more desulphurising or dephosphorising agents such as lime oxide of
manganese, limestone, chalk, magnesia, chloride of calcium, chloride of manganese,
dolomite, carbonate of barium (witherite) carbonate of magnesia, fluoride of
calcium (fluor spar) barium monoxide (baryta) barium dioxide, sodium chloride
(common salt).
The principle of the process consists in the combination of the sulphur &
phosphorus present in the iron or steel with the desulphurising or dephosphorising
agents used forming light compounds which are partly ejected by the blast and
partly remain on the surface of the metal.
The process is more particularly applicable to rid molten iron of sulphur &
phosphorus while under the (or near the completion of the) process of decar-
burisation & desiliconisation of iron in the Bessemer converter as used in the
manufacture of Bessemer steel, either by the basic or acid process. The forcing of
the above mentioned desulphurising & dephosphorising agents through the molten
metal may be produced by any of the well known methods of injection.

page_text: The accompanying drawing shews an arrangement devised by me for the purpose.
The apparatus consists in a reservoir à fitted on to the converter to contain the
dry & finely powdered chemicals, it is fitted with the lid B (on the opening of
which the chemicals can be introduced) which can be closed air tight, and two
tubes C and D connected with the main blast pipe E to supply a pressure of air on
the surface of the powder. The powder is drawn from the reservoir by means of
the injector F whence it passes through the funnel G & forced through the special
central twyer H the composition of which may be acid, basic, or neutral according
to the nature of the chemicals used and hence through the molten metal.
To ensure that the pressure in the injector is suitable for the purpose a slide
valve S is fixed to the main blast pipe so that the pressure may be regulated as
required.
The views of the several figs. of the annexed drawings are as follows
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:-
The elimination of sulphur & phosphorus either partly or wholly from iron or
steel by forcing one or more of the aforenamed chemicals through the molten metal
by means of injection with a force of air.
Dated this 22nd day of May 1893.
HENRY JOSHUA PHILLIPS.