Improvements in the Manufacture of Briquettes of Purple Ore.
Year: 1891

page_text: Date of Application, 12th Sept., 1891
Complete Specification Left, 9th May, 1892-Accepted, 11th June, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Briquettes of Purple Ore.
We, THEODOR HEINRICH JOHANN ESKUCHEN and HERMANN AUGUST
HAARMANN, both of the Georgs-Marien Bergwerks und Hütten, Osnabrück, in
the Empire of Germany, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the manufacture of briquettes of purple ore.
According to this invention we prepare briquettes of purple ore by intimately
mixing the finely powdered purple ore with dry furnace dust from blast furnaces as
a binding material in a mixing machine, the pressed blocks or briquettes being then
moulded from the mixture.
Briquettes made of purple ore with the admixture of furnace dust are not only
harder than ordinary ones made of purple ore alone, but there is also another
advantage in the use of furnace dust as the binding material, inasmuch as the irou,
which has hitherto been lost with the furnace dust, is recovered in the smelting of
the briquettes in blast furnaces or Martin's furnaces.
Dated the 10th day of September 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Briquettes of Purple Ore.
We, THEODOR HEINRICH JOHANN ESKUCHEN and HERMANN AUGUST
HAARMANN, both of the Georgs-Marien Bergwerks und Hütten Verein,
Osnabrück, in the Empire of Germany, 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 relates to the manufacture of briquettes of purple ore.
In order to recover the iron contained in the furnace dust from blast furnaces,
which has hitherto been lost in smelting briquettes of purple ore, and also to obtain
firmner blocks than it is possible to by the use of purple ore alone, we prepare rough
blocks from purple ore mixed with a binding material containing iron in a finely
pulverized condition.
In employing binding material containing iron in the manufacture of briquettes
of purple ore we intimately mix the finely powdered purple ore with the binding
material in a mixing machine, the pressed blocks or briquettes being then moulded
from the mixture.
Another binding material containing iron and suitable for the above stated
purpose is the finely pulverized oxide of iron derived from the manufacture of
aniline and the well known Laming's composition after it has been used for
scrubbing gas, which materials also contain finely divided oxide of iron and alkalies
and are therefore an equivalent of the furnace dust.
Briquettes made of purple ore mixed with any one of the above binding materials
are not only harder than those made from purple ore alone, but there is also another
advantage in the use of the described binding materials inasmuch as the iron
hitherto lost in blast furnaces and Martin's furnaces is now recovered in the
re-smelting of the briquettes.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
The employment of furnace dust from blast-furnaces or other finely pulverized
refuse containing iron as binding material in the preparation of briquettes from
purple ore, substantially as herein before described.
Dated the 9th day of May 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.