Processes of Separating Metals Covering Scraps, Clippings, or other Pieces of Metal of all kinds.
Year: 1893

page_text: Date of Application (in United Kingdom), 17th Feb., 1893
Complete Specification Left, 18th Oct., 1893-Accepted, 20th Jan.,
1894
Processes of Separating Metals Covering Scraps, Clippings, or other
Pieces of Metal of all kinds.
We FRANÇOIS ELIE DE FURSAC, JOSEPH CHARLES MOISSET, and Jean
BAPTISTE JULES VÉRY, trading under the style or firm of La Société de Fursac
Moisset and Véry, of 3, Rue Honnet, Clichy (Seine) France, Metallurgists, do
hereby declare the nature of this invention to be as follows:-
This invention relates to improved processes for the separation of metals forming
the coating of all kinds of waste metal pieces, scraps, or clippings, by the action of
the oxygen of the air in combination with a liquid suited to the kind of metal to
be recovered, whether tin from tin plate scraps, zinc from iron, nickel from nickeled
iron, or other metals covered with another metal.
To this end one or more series of cylindrical or other receivers containing the
metal to be treated are disposed in a vat containing the liquid suited for the
particular metal. The receivers which may be made of metal, wood, or other
inaterial, have their sides perforated or apertured in any suitable manner and are
mounted around and attached in any convenient way to a shaft which imparts to
them rotatory motion and immerses them simultaneously or alternately in the liquid
contained in the vat, and raises them out of the same so as to expose them
alternately to the air. It is preferred to use an apparatus having three cylindrical
receivers per vat.
The waste or other pieces are placed in these receivers which are provided with
doors, the operation of filling the receivers with the waste or other pieces or
clippings, as likewise that of emptying them, being performed outside of the
apparatus. The shaft is provided with two arms which support the receivers
mounted on trunnions at their ends and at each revolution of the shaft each
receiver is immersed in the liquid and emerges therefrom and is immediately
followed by the next one of the series. By this operation each receiver is at each
revolution of the shaft completely filled with liquid and a moment after quite
empty. The liquid escaping through the perforated walls of the receivers is
replaced by air whose oxygen acts with great rapidity on the moistened surfaces
and by this repeated oxidation causes the covering metal to be removed as it is
rendered soluble by oxidation.
It is to be understood that, to effect the separation of the metals, the receivers
containing the metal to be treated may be fixed and the bath made movable and
the same result may be obtained either by an interrupted circulation or by injecting
other
the liquid or by blowing in air by means of a blower, or in any way.

page_text: We reserve the right to vary the forms and dimensions of our apparatus and to
employ any suitable materials in its construction.
Dated this 17th day of February 1893.
Processes of Separating Metals Covering Scraps, Clippings, or other
Pieces of Metal of all kinds.
We FRANÇOIS ELIE DE FURSAC, JOSEPH CHARLES MOISSET, and JEAN
BAPTISTE JULES VÉRY, trading under the style or firm of La Société de Fursac
Moisset and Véry, of 3, Rue Honnet, Clichy (Seine) France, Metallurgists, 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 improved processes for the separation of metals forming
the coating of all kinds of waste metal pieces, scraps, or clippings, by the action of
the oxygen of the air in combination with a liquid suited to the kind of metal to
be recovered, whether tin from tin plate scraps, zinc from iron, nickel from nickeled
iron, or other metals covered with another metal.
To this end one or more series of cylindrical or other receivers containing the
metal to be treated are disposed in a vat containing the liquid suited for the
particular metal. The receivers which may be made of metal, wood, or other
material, have their sides perforated or apertured in any suitable manner and are
mounted around and attached in any convenient way to a shaft which imparts to
them rotatory motion and immerses them simultaneously or alternately in the
liquid contained in the vat, and raises them out of the same so as to expose them
alternately to the air. It is preferred to use an apparatus having three cylindrical
receivers per vat, such as that illustrated in the accompanying drawing in
which
Figure 1 represents a part sectional front elevation and Figure 2 a part sectional
side elevation of the apparatus.
The waste or other pieces are placed in the receivers a which are provided with
doors and placed in a vat b the operation of filling the receivers with the waste or
other pieces or clippings, as likewise that of emptying them, being performed
outside of the apparatus. The shaft c is provided with three arms d which support
the receivers a, mounted on trunnions e at their ends and at each revolution of the
shaft c, each receiver a is immersed in the liquid and emerges therefrom and is
immediately followed by the next one of the series. By this operation each
receiver a is at each revolution of the shaft completely filled with liquid and a
moment after quite empty. The liquid escaping through the perforated walls of
the receivers is replaced by air, whose oxygen acts with great rapidity on the
moistened surfaces and by this repeated oxidation causes the covering metal to be
removed as it is rendered soluble by oxidation.
The liquid which we employ for the separation of the iron and tin from waste tin
plate scraps is composed of water acidulated by means of hydrochloric acid in the
following proportions :-hydrochloric acid 8 to 10 per cent. This liquid placed in
vat a absorbs the tin rendered soluble by the oxidation of the covering metal and
converts it into oxychloride of tin. The oxides obtained from the liquids are
afterwards reduced by known means in a reverberatory furnace.

page_text: It is to be understood that to effect the separation of the metals, the receivers
containing the metal to be treated may be fixed and the bath made movable, and
the same result may be obtained either by an interrupted circulation or by injecting
the liquid, or by blowing in air by means of a blower or in any other way.
We reserve the right to vary the forms and dimensions of our apparatus and to
employ any suitable materials in its construction.
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 herein described processes of separating metals covering scraps, clippings, or
other pieces of metal of all kinds, comprising (1) the employment of an apparatus
formed of one or more receivers having perforated walls, grouped around a rotary
shaft and permitting the repeated and alternate contact of the metal to be treated
with the liquid and with the air (2) of any other apparatus exposing mechanically
alternately and completely the surfaces of the metal to be treated, to the appropriate
liquid and to the air substantially as and for the purpose specified.
1
101
1000
F. E. DE FURSAC,
J. C. MOISSET,
J. B. J. VÉRY,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.