IMPROVEMENTS RELATING TO THE SEPARATION OF TIN FROM TIN-PLATE AND TO THE PRODUCTION OF PROTOCHLORIDE OF TIN
Year: 1885

page_text: and to the Production of Protochloride of
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the
" to
nature of my invention for "IMPROVEMENTS RELATING TO THE SEPARATION OF
TIN FROM TIN-PLATE AND TO THE PRODUCTION OF PROTOCHLORIDE OF TIN
be as follows:-
This invention has for its object to separate tin from tin-smith's cuttings and
other scraps or pieces of tin-plate, and comprises a process whereby protochloride
of tin is formed.
According to the said invention, the scraps or pieces of tin-plate are treated with
gaseous hydrochloric acid at an elevated temperature.
In carrying on the improved process, the scraps or pieces of tin-plate are placed
in a suitable vessel and heated to about four hundred degrees (400°) Celsius; the
gaseous hydrochloric acid is then caused to pass through the said vessel and come
The tin of the tin-plate
into contact with the scraps or pieces of tin-plate.
combines with the bydrochloric acid, and protochloride of tin and hydrogen are
produced, according to the formula
Sn. 2 HCl. Sn. Cl.+ 2 H.
:
The protochloride of tin thus produced distils off at the temperature to which, as
above stated, the tin-plate, is heated, and can be worked up or utilized in any well
known or convenient manner.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: and to the Production of Protochloride of Tin.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings in the County of Middlesex, 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 has for its object to separate tin from tin-smith's cuttings and
other scraps or pieces of tin-plate, and comprises a process whereby protochloride
of tin is formed.
According to the said invention, the scraps or pieces of tin-plate are treated
with gaseous hydrochloric acid at an elevated temperature.
In carrying on the improved process, the scraps or pieces of tin-plate are placed
in a suitable vessel and heated to about four hundred degrees (400°) Celsius; the
gaseous hydrochloric acid is then caused to pass through the said vessel and come
into contact with the scraps or pieces of tin-plate. The tin of the tin-plate
combines with the hydrochloric acid, and protochloride of tin and hydrogen are
produced, according to the formula:-
Sn. +2 HCl. = Sn. Cl, + 2 H.
The protochloride of tin thus produced distils off at the temperature to which,
as above stated, the tin-plate is heated, and can be worked up or utilized in any
well known or convenient manner.
:
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated
to me by my Foreign Correspondent, I declare that what I claim is :-
First. The process of separating tin from scraps or pieces of tin-plate by sub-
jecting the latter to the action of gaseous hydrochloric acid at an elevated
temperature.
Second Protochloride of tin produced by subjecting scraps or pieces of tin plate
to the action of hydrochloric acid at a raised temperature.
Dated this 14th day of May 1906
HASELTINE, LAKE & Co.;
Agents for Applicant.