An Improved Composition for the Dephosphorization of Metals, and Process and Ingredients for Producing the same.
Year: 1897

page_text: Date of Application, 19th June, 1897
Complete Specification Left, 10th Nov., 1897-Accepted, 18th June; 1898 -
An Improved Composition for the Dephosphorization of Metals, and
Process and Ingredients for Producing the same.
I, ADOLF BOTTGER, in Dusseldorf, in the Empire of Germany, Carlsstrasse 96,
do hereby declare the nature of this invention to be as follows:-
The object of the present invention is the production of a composition to be
added to metals for casting for the purpose of freeing such metals from phosphorus
and to obtain a far higher density and greater homogenity of the castings than
hitherto possible.
This composition is prepared as follows:-
Fifteen parts of soda are dissolved in water; in the resulting liquid, eighty parts
of lime are dissolved, and to the then resulting pulp-like composition is added
ten parts of red lead, Pb30, after which the whole is treated with an addition of
petroleum. The composition is then cast in suitable moulds in which it is left to
cool and solidify. The composition has to be pulverized before it is used, and is
then filled into the moulds where it produces the effect upon the molten metal of
considerable agitation or ebullition by which a considerable amount of cinder or
dross is separated.
The casts produced in such a manner possess the advantage of extraordinary
density, homogenity and great purity. The cast will also be remarkably soft.
Dated this 19th day of June 1897.
PHILLIPS & LEIGH,
Agents for the Applicant.
An Improved Composition for the Dephosphorization of Metals, and
Process and Ingredients for Producing the same.
I, ADOLF BÖTTGEK, Work-Master, at Dusseldorf on the Rhine, Carlsstrasse
No. 96, 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 method for producing a means able to dephosphorize cast metals and to
improve the casting consists in the following: First 80 particles of lime and 45
particles of carbonate of soda are energetically mixed in a vessel containing cold
water. At the same time 10 particles of minium, ground before to fine powder,
are dissolved, as far as possible, in hot water and then the contents of both vessels
is brought together. In order to give to this mass the necessary consistency, flour is
added. The whole mass in then agitated and afterwards formed to cakes in any
Prine 81

page_text: required shape in proper moulds. Every cake leaving the mould is plunged into
petroleum and is then proper for use.
The annexed drawing shows the apparatus invented by me for bringing this mass
into the furnaces.
Fig. 1 shows the apparatus applied to a furnace, Fig. 2 a horizontal section x-x,
Figures 3 and 4 are details of it and Fig. 5 a special form of construction.
The mass is put into the receiver A combined with a transport-cylinder B in
which a spiral C is mounted. The cylinder B is provided with a flap 6 protecting
the mass from the inconveniences of a wind-recoil and securing the spiral against
the influence of the heat. The mass forwarded by the spiral up to the tweer d
is directly blast on the cast-metal by the wind coming from the air-pipe F.
The slide regulates the entrance of the mass from the receiver A into the
cylinder B; the former is provided with a looking-glass c. The mass contained
-in the receiver is protected from exterior influences by a cover a.
Fig. 5. shows a modification of the apparatus, the transport-cylinder being
mounted into the air-pipe F.
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:
.
-
1) Method for producing an agent for dephosphorizing cast-metals consisting of
a composition of carbonate of soda, lime, minium and petroleum, mixed in the
stated proportions and in the stated succession, all as described.
2) Apparatus for bringing this agent into the furnaces characterized by the
combination of the mass-receiver A with a transport-cylinder B, the latter having
a spiral C, forwarding by its rotation the mass up to the tweer d, all as described.
Dated this 14th day of May 1898.
For ADOLF BOTTGER.
Consul Grein.