CERTAIN IMPROVEMENTS IN THE PRODUCTION OF SILICIDES OF METALS AND SILICIDES OF METALLIC ALLOYS, AND IN THE PROCESS EMPLOYED THEREFOR." PROVISIONAL SPECIFICATION
Year: 1877

page_text: LETTERS PATENT to John Hollway, of the Firm of Hollway Brothers, of
7, Jeffrey's Square, in the City of London, for the Invention of "CERTAIN
IMPROVEMENTS IN THE PRODUCTION OF SILICIDES OF METALS AND SILICIDES OF
METALLIC ALLOYS, AND IN THE PROCESS EMPLOYED THEREFOR."
PROVISIONAL SPECIFICATION left by the said John Hollway at the Office
of the Commissioners of Patents on the 14th April 1877.
JOHN HOLLWAY, of the Firm of Hollway Brothers, of 7, Jeffrey's Square, in the
City of London. "CERTAIN IMPROVEMENTS IN THE PRODUCTION OF SILICIDES OE
METALS AND SILICIDES OF METALLIC ALLOYS, AND IN THE PROCESS EMPLOYED
THEREFOR."
This Invention relates to the production of compound coke by a similar process
to that described in the Specifications of Patents granted to me on the 5th day of April
1876, No. 1446, on the 23rd day of August 1876, No. 3314, and on the 20th day of
January 1877, No. 265; but inasmuch as the production of the coke forming the
subject of this Invention is intended for the manufacture of silicides of metals and
silicides of metallic alloys, I will describe the production of such description of
compound coke out of various kinds of ores or other substances containing metals,
herein-after more particularly referred to, amalgamated with carboniferous and other
substances, which when smelted in the blast furnace or by other means of reduction
will produce a metallic silicide.
The object of this Invention is therefore the formation of a compound metallic
coke, which when smelted will produce a silicide of metal or metals therein
contained.
To produce a silicide, say, for example, of iron and manganese, take small or
powdered ferro-manganiferous ore, manganese ore, iron ore, and other manganiferous
or ferreous substances or any thereof, and mix therewith, if necessary, an additional
quantity of silica or siliceous substances with coal, and also bitumen if preferred.
When coked the ingredients thus amalgamated will produce a coke, which when
smelted will yield a silicide of ron and manganese.

page_text: The excess of carbon in the coke, together with the intimate association of the
siliceous and metalliferous substances with carbon combine to effect the reduction
of the silica, and to produce the compound herein referred to as silicide.
The compound metallic coke may be smelted with or without further mangani-
ferous, ferreous, and siliceous substances or any thereof.
The foregoing will serve as an illustration of the manner in which, by the same
process, other silicides of metals or of metallic alloys can be produced from
metalliferous substances with or without additional siliceous substances. This
process obviates difficulties in the reduction of silica, amongst which may be
mentioned the great affinity of silicon and oxygen, as well as the facility with which
silica combines with lime, alumina, and other oxides forming slag.
I consider it unnecessary further to explain in detail the process of manufacture
of the metallic coke forining the subject of this Invention, as that is done fully in
the Specifications of my previous Patents herein-before referred to.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Hollway in the Great Seal Patent Office on the 13th October
1877.
JOHN HOLLWAY, of the Firm of Hollway Brothers, of 7, Jeffrey's Square, in the
City of London. "CERTAIN IMPROVEMENTS IN THE PRODUCTION OF SILICIDES OF
METALS AND SILICIDES OF METALLIC ALLOYS, AND IN THE PROCESS EMPLOYED
THEREFOR."
The Invention relates to the production of compound coke by a similar process
to that described in the Specifications of Patents granted to me on the 5th day of
April 1876, No. 1446, on the 23rd day of August 1876, No. 3314, and on the
20th day of January 1877, No. 265; but inasmuch as the production of the coke
forming the subject of this Invention is intended for the manufacture of silicides of
metals and silicides of metallic alloys, I will describe the production of such
description of compound coke out of various kinds of ores or other substances
containing metals, herein-after more particularly referred to, amalgamated with
carboniferous and other substances, which when smelted in the blast furnace or by
other means will produce a metallic silicide.
The object of this Invention is the formation of a compound metallic coke, which
when smelted will produce a silicide of metal or metals therein contained.
To produce a silicide, say, for example, of iron and manganese, take small or
powdered ferro-manganiferous ore, manganese ore, iron ore, and other mangani-
ferous or ferreous substances, or any thereof, and mix therewith, if necessary, an
additional quantity of silica or siliceous substances with coal, and also bitumen if
required. Any or all of the above ingredients may, if desired, be washed or
otherwise treated, say, for example, to remove lime, alumina, and other substances.
When coked the ingredients thus amalgamated will produce a coke, which when
smelted will yield a silicide of iron and manganese, care being taken that the silica
should be in excess of the alkaline and earthy bases.
If the coking is not done prior to the introduction of the mixture into the blast
furnace, it will be necessary to form it into lumps or bricks which will hold
together while coking in the furnace.
The excess of carbon in the coke, together with the intimate association of the
siliceous and metalliferous substances with carbon combine to effect the reduction of
the silica, and to produce the compounds herein referred to as silicides.
The compound metallic coke may be smelted with or without further mangani-
ferous, ferreous, and siliceous substances or any thereof, and with or without
ordinary coke.

page_text: The foregoing will serve as an illustration of the manner in which by the same
process other silicides of metals or of metallic alloys can be produced from metalliferous
substances with or without additional siliceous substances. This process obviates
difficulties in the reduction of silica, among which may be mentioned the great
affinity between silicon and oxygen, as well as the facility with which silica
combines with lime, alumina, and other oxides formning slag, the former difficulty
being overcome by powerful reducing agents in intimate contact with the silica, and
the latter by having the silica sufficiently in excess of the alkaline and earthy bases.
When it is desired to produce silicides from non-silicious substances, care should
be taken that the silica in the coke should be sufficiently in excess of the alkaline
and carthy bases, and this perponderence must be increased in direct ratio with the
amount of silicon required to bo reduced.
I consider it unnecessary further to explain in detail the process of manufacture
of the metallic coke forming the subject of this Invention, as that is done fully in
the Specifications of my previous Patents heroin-before referred to.
I therefore claim as new, and as of my Invention, the production of metallic
silicides in the manner as substantially herein described.
In witness whereof, I, the said John Hollway, have hereunto set my hand
and seal, this Eleventh day of October, in the year of our Lord One
thousand eight hundred and seventy-seven.
Witness,
THO. WRIGLEY,
75, Chancery Lane,
W.C.
JOHN HOLLWAY. (LS.)