Improvements in the Manufacture of Chlorates of the Alcalies or Alcaline Earths.
Year: 1887

page_text: Date of Application, 29th Mar., 1887
Complete Left, 28th Dec., 1887
Complete Accepted, 2nd Mar., 1888
Improvements in the Manufacture of Chlorates of the Alcalies or
Alcaline Earths.
We HENRY GALL, Chemist and Viscount AMAURY DE MONTLAUR, Engineer, both
of 63 Rue Pierre Charron, Paris, in the Republic of France, do hereby declare the
nature of this invention, to be as follows:-
This invention consists in an improved process for the manufacture of the chlorates
of the alcalies or alcaline earths froin the corresponding chlorides and in the separation
of the said chlorates from the solutions of the chloride.
The process consists in subjecting the solution of the respective chloride to the
action of a current of electricity in a vessel provided with a porous diaphragm. The
vessel may consist of a trough of earthenware stoneware or of other suitable material
divided into two compartments by a partition of porous earth or other suitable
material. The liquid is caused to circulate from the negative to the positive
compartment, so that the base set free in the negative compartment may combine
with the chloric acid in the positive compartment. The reaction is expressed by
the following formula
6 CI 6 MOH =
M CIO, 5 M Cl + 3 H, O
where M equals an equivalent of the metal. The liquid may be heated to increase
the reaction.
The chlorate may, if less soluble than the chloride be crystallized out of the
solution, or if more soluble, the chloride may be first crystallized out and the chlorate
afterwards obtained.
002
M1007
HERBERT & Co.,
67, Strand, W.C.,
Agents to Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Manufacture of Chlorates of the Alcalies or
Alcaline Earths.
We HENRY GALL, Chemist, and Viscount AMAURY DE MONTLAUR, Engineer of
63, Rue Pierre Charron Paris in the Republic of France 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 consists in an improved process for the manufacture of the chlorates
of the alcalies or of the alcaline earths from the corresponding chlorides, and in the
separation of the said chlorates from the solutions of the chlorides.
The process is as follows; The corresponding chloride in aqueous solution is
submitted to the action of an electric current in a trough provided with a porous
partition. The trough may be of earthenware, stoneware, or other convenient material,
being divided into two parts by the porous diaphragm which may be of porous
earthenware, pasteboard or any other suitable material not containing organic or
other substances liable to be destroyed by chloric acid.
To avoid the reducing action of the hydrogen which is separated at the negative
pole, the liquid in the negative compartment is caused to circulate, by exterior tubes
with valves or other suitable means, towards the positive compartment, so that the
base formed may combine with the chloric acid as it is formed. The base derived
from preceding operations may likewise be introduced into the positive compartment
at the commencement of the operation.
The solution is preferably kept at a temperature of from 45° to 55° Centigrade
during the process and the reaction then takes place according to the equation-

page_text: In such cases where the chlorate is more soluble than the chloride, as with sodium
and calcium, the liquid is evaporated and the chloride first crystallised out and
afterwards the chlorate, the latter being purified by recrystallisation.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is;—
The process of forming and separating the chlorates of the alcalies and alcaline
earths substantially as herein described
Dated this 27th day of December 1887.
HENRY GALL.
AMAURY DE MONTLAUER.
By Herbert & Co.,
18, Buckingham Street, Strand, W.C., London,
Agents to Applicants.