IMPROVEMENTS IN THE REGENERATION OF CERTAIN COMPOUNDS OF MANGANESE FROM CERTAIN RESIDUES, AND IN THE MANUFACTURE OF CHLORINE AND OXYGEN
Year: 1869

page_text: PROVISIONAL SPECIFICATION left by Walter Weldon at the Office
of the Commissioners of Patents, with his Petition, on the 30th
January 1869.
I, WALTER WELDON, of Park Villa, West Hill, Highgate, in the
County of Middlesex, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE REGENERATION OF CERTAIN COMPOUNDS
OF MANGANESE FROM CERTAIN RESIDUES, AND IN THE MANUFACTURE OF CHLORINE
AND OXYGEN," to be as follows:-
This Invention relates to the regeneration from the residues of the
manufacture of chlorine, and also from the residues of the manufacture
of oxygen as conducted by means of high oxides of manganese employed
in the wet way, of compounds of manganese capable of serving again in
the said manufactures when the regeneration of such compounds is
effected by first converting the manganese contained in the said
residue into the state of hydrated protoxide, or other low oxide, and then
treating such hydrated oxide in the wet way with atmospheric or other
gaseous oxygen.
The said Invention consists, firstly, in adding to a mixture of hydrated
protoxide or other oxide or oxides of manganese with either water or a

page_text: suitable saline solution, or to a mixture containing other substances in
addition to hydrated oxide or oxides of manganese and either water or a
saline solution, when either such said mixture is to be treated with
gaseous oxygen, as contained in atmospheric air or otherwise, in order
to the production of a highly oxidized compound of manganese, and
either before the commencement of such treatment with oxygen or at
some stage during the progress thereof, any salt containing oxygen and
capable of imparting oxygen to the oxide or oxides of manganese
contained in the mixture. to which it is added, and of then absorbing
oxygen to replace that with, which it has thus parted from the gaseous
oxygenating agent with which such mixture may be afterwards or
simultaneously treated, in such wise that a comparatively small quantity
of such salt may "carry oxygen to a comparatively large quantity of
oxide of manganese. The salts which I believe to be most suitable for
this purpose are the hypochlorites, chlorites, perchlorates, manganates,
permanganates, and ferrates; but, as every chemist will be aware,
there are many other similar salts which will answer nearly or quite
as well.
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The said Invention consists, secondly, in manufacturing chlorine by
treating either with hydrochloric acid or with sulphuric acid and a
metallic chloride any compounds of manganese and oxygen, whether
or not containing other substances also, when such compounds have
been produced by treating hydrated protoxide or other oxide of
inanganese, with atmospheric or other gaseous oxygen in the wet way,
in the presence of a salt capable of acting as a "carrier" of oxygen,
as above described; and in manufacturing oxygen by treating any
such compounds obtained as aforesaid either with heat alone or
with sulphuric acid alone, or with heat and sulphuric acid combined.
The said Invention consists, lastly, in continually regenerating and
employing over again the compounds to the production of which the first
part of the said Invention relates when those compounds are employed
either in the manufacture of chlorine or in the manufacture of oxygen
by the wet way.