Improvements in Alloys.
Year: 1888

page_text: Date of Application, 24th Sept., 1888
Complete Specification Left, 15th June, 1889-Accepted, 20th July, 1889
Improvements in Alloys.
I, HEINRICH ECKARDT, residing at 25 Heiligerweg, Dortmund, Germany, Engineer,
do hereby declare the nature of this invention to be as follows:-
"
My invention relates to the manufacture of a new alloy composed of chromic iron
and manganese.
The way I manufacture my alloy is as follows:
I take a mixture of chromic-iron-ore of about the following the constitutant parts:
50% Cr² 3, 12% Fe² O₂, 11 % Al² O₂, 18 % Mgo and 9% Si O, and about'
the same weight of bessemer slag containing about 45 %% Si O₂, 10 % Fe 0, 45%
Mn O and smelt these two mixtures together with the necessary quantity of coal and
the result I obtain is an alloy of 50% (r. 20% Mn and 20% Fe and a slag
containing 50% Si O₂ 1-2 % Fe 0, 14 of Al² 0, 18 % Mn 0 and 16 % Mg O
with traces of Cr³ Oa, the slag in this new alloy is completely separated from the
metal as the bessemer slag makes the almost infusible parts of the chromic-iron-ore
easily soluable.
In order to obtain more manganese in the alloy more manganese-ore can be added.
The advantages of this system are that it uses the slag from bessemer convertors to
good advantage which otherwise is useless.
The chromic-iron-ore and bessemer slag in a finely powdered state may be mixed
with tar containing no water, in sufficient quantity necessary for the reduction of the.
ore, and briquettes made from the mixture may be used to great advantage with coke
in blast furnaces.
Dated Berlin this 22nd Santamba 1909
HEINRICH ECKARDT.
By A. Kubnt & R. Deissler,
38, Alexanderstrasse, Berlin, C., Germany.
THE WAY.
I, HEINRICH ECKARDT, engineer of 25 Heiligerweg, Dortmund, German Empire,
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
My invention relates to the manufacture of a new alloy composed of chromic iron
and manganese.
The way I manufacture my alloy is as follows:
I take a mixture of chromic-iron-ore of about the following constituent parts:
50% Cr² 0³, 12% Fe³ 03. 11 % Al 03, 18 % Mg° and 9% Si O, and about
the same weight of bessemer slag containing about 45% Si O2, 10 % Fe 0, 45 %
Mn O and smelt these two mixtures together with the necessary quantity of coal and
the result I obtain is an alloy of 50% Cr, 20% Mn and 20% Fe and a slag con-
taining 50% Si O, 1-2 % Fe 0, 14 % of Al² O₂, 18 % Mn 0 and 16% Mg O
with traces of EO, the slag in this new alloy is completely separated from the
metal as the bessemer slag makes the almost infusible parts of the chromic-iron-ore
easily soluble.
In order to obtin more manganese in the alloy more manganese-ore can be added.
The advantages of this system are that it uses the slag from bessemer convertors
to good advantage which otherwise is useless.

page_text: The chromic-iron-ore and bessemer slag in a finely powdered state may be mixed
with tar containing no water in sufficient quantity necessary for the reduction of the
ore, and briquettes made from the mixture which inay then be smelted in a blast
furnace, flame furnace or melting pot.
Should it be desired to produce chromic iron without manganese, it is necessary
to substitute glass hammered to a powder in the mixture instead of bessemer slag.
Chromic iron, glass and char-coal should be mixed in the proper proportions and
placed in the melting pot.
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 1
claim is:
1.) The process of producing alloys of chromic iron and manganese by smelting
chrome-ore and bessemer slag together with a sufficient quantity of coal, in the
manner and for the purpose, substantially as described.
2.) The process of producing alloys of chromic iron and manganese by mixing
chrome-ore with bessemer slag and adding tar free from water, then pressing the
pasty mass to briquettes and smelting the same in a furnace, in the manner and for
the purpose, substantially as described.
3.) For the obtaining of more manganese in the alloy the addition of finely
powdered manganese-ore in the above process, in the manner and for the purpose,
substantially as described.
:
4.) For obtaining chromic iron the smelting together of chrome ore, glass and
char-coal in the manner and for the purpose, substantially as described.
Dated Berlin. this 12th day of June 1889.
HEINRICH ECKARDT.
By A Kuhnt & R. Deissler.