Improved Method for Using Mine Dust of Iron from Calcining Kilns or Hearths.
Year: 1896

page_text: Date of Application, 23rd Apr., 1896
Complete Specification Left, 22nd June, 1896-Accepted, 25th July, 1896
PROVISIONAL SPECIFICATION.
Improved Method for Using Mine Dust of Iron from Calcining
Kilns or Hearths.
I GEORGE FISHяя of Shotts House, Shotts, in the County of Lanark, Scotland,
Furnace Manager, do hereby declare the nature of this invention to be as follows:-
My invention consists in providing, and mixing mine dust of clay and black-band
ironstone, from char hearths, bings, ovens &c. " after calcination" into a plastic or other
state, so that it can be manipulated and formed into lamps, bricks, or briquetts,
suitable for use in blast furnaces, cupolas, or other furnaces which may be adapted
for the purpose of smelting.
The principal object of my invention, being to utilise the dust or residue which
accrue from the calcination of clay, and black-band ironstone which was formally
wasted.
To obtain the foregoing advantages, tho dust or residue is gathered up and passod
through a pug-mill, or other suitable grinder, and mixer, in the usual way of treating,
and preparing clays for common brick making.
During the time of grinding and mixing the mine dust, it may be necessary to
use some suitable ingredient for binding tho aforesaid dust together, such as alumina.
The mixture is then taken and made into such form as may be deemed suitable
for use at the furnaces.
They are then dried in some convenient heat, and if nocossary put into a kiln,
and burnt sufficiently hard for bearing the weight, and rough usage at blast, and
other furnaces.
CA 1906
Improved Method for Using Mine Dust of Iron from Caloining
Kilns or Hearths.
I, GEORGE FISHER, of Shotts House, Shotts, in the County of Lanark, Scotland,
Furnace Manager, 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, that is to say :-
My said invention has for its object the utilising of minoral dust derived from
argillaceous and carboniferous ores such as clayband and blackband ironstone and
occurring as residues in charhearths, bings, ovens, and calcining kilus or hearths
of various kinds; and it consists in bringing the dust aftor calcination, into a
plastic state, so that it can be manipulated and formed into lumps, bricks, or
briquettes, suitable for use in blast furnaces, cupolas, or other furnaces in which
smelting is effected.
In carrying out my invention I take the mineral dust or metaliferous residuo
after it has undergone calcination, and have it ground and thoroughly intermixed
in any suitable grinding and mixing machine, adding water if required, to render

page_text: the mixture plastic. Also, if required, an ingredient such as clay or alumina, should be
added for the purpose of binding the dust together.
The plastic mixture obtained in this way is next formed or moulded into such
forms as may be deemed suitable for use in the smelting furnace. The lumps or
moulded bricks or blocks are noxt dried, and if found necessary are fired or baked
in a kiln to render them sufficiently hard to bear the weight and rough usage in a
blast or other furnace.
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 :
The rendering of mine dust of iron from calcining kilns or hearths advantageously
usable in smelting furnaces, by taking it after it has undergone calcination, and
grinding and mixing it, and forming it into lumps, bricks, or the like, substantially as
hereinbefore described.
Dated this Twentieth day of June 1896.
EDMUND HUNT,
Applicant's Agent.