Improvements in the Manufacture of Barium Chloride and Strontium Chloride.
Year: 1891

page_text: Date of Application, 22nd Jan., 1891
Complete Specification Left, 22nd Oct., 1891-Accepted, 28th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Barium Chloride and
Strontium Chloride.
I, MICHEL NICHOLAS D'ANDRIA of Birch Villa Windsor Road Levenshulme
in the County of Lancaster Manufacturing Chemist do hereby declare the nature
of this invention to be as follows
:-
My object is to obtain the above salts in a cheap manner and to attain this
object I heat barium sulphate previously ground, or reduced to a coarse powder in
a furnace or in iron or clay retorts with charcoal, small coal or other carbonaceous
matter and preferably out of the contact of air, and after sufficient heating, I treat
the mass with a weak solution of protochloride of iron, acid or neutral resulting as
a bye product from galvanizing and other operations, and thus obtain barium
chloride in solution which I remove by filtration or decantation from the remaining
sulphide of iron formed, and I evaporate this solution to the crystalizing point in
the usual way.
In order to obtain strontium chloride, I repeat the above operation, using in this
case strontium sulphate, and I proceed as before specified in the production of
barium chloride.
In some cases I add the protochloride of iron to the barium or strontium sulphate
previously to heating the sulphates, or cither of them, with carbonaceous matter
and lixiviate the soluble chlorides or either of them from the heated mass.
Ferric chloride may also be used but it is not so advantageous.
Dated the 20th day of Law 1901
MICHEL N. D'ANDRIA.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Barium Chloride and
Strontium Chloride.
I MICHEL NICHOLAS D'ANDRIA of Birch Villa Windsor Road Levenshulme in
the County of Lancaster Manufacturing Chemist 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 :-
I obtain the aforesaid salts as follows: 1 heat barium sulphate previously
ground or reduced to a coarse powder in a furnace or in iron or clay or other
retorts with charcoal, small coal or other carbonaceous matter, preferably out of
contact with air, and after sufficient heating, I treat the mass obtained as aforesaid
with a solution of proto-chloride of iron preferably neutral, (the chloride of iron
resulting as a bye-product from galvanizing and other operations is suitable for this
purpose).
Ithus obtain barium chloride in solution which I remove by filtration or
decantation from the remaining sulphide of iron formed, and I evaporate this
solution to the crystalizing point in the usual way.
In order to obtain strontium chloride I make use of the above operation, but
using strontium sulphate, and I proceed in the same manner as before specified in
the production of barium chloride.
In some cases 1 add the proto-chloride of iron to the barium or strontium
sulphate previously to heating the said sulphates or either of them together with
carbonaceous matter, and dissolve the soluble chlorides, or either of them, from
the mass obtained, by heating the materials as aforesaid.
-

page_text: Ferric-chloride may also be used but it is not so advantageous.
In some cases, I separate the barium sulphide or strontium sulphide or either of
them, from any insoluble matter, and use the solutions of barium sulphide or
strontium sulphide to decompose the proto-chloride of iron and obtain at the same
time precipitated sulphide of iron, while barium chloride or strontium chloride
remains in solution. The sulphide of iron may be separated from the soluble
matter by any suitable means.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is,
The production of barium chloride and strontium chloride, by the reaction of
chloride of iron upon the sulphide of barium or sulphide of strontium substantially
as set forth and described herein.
M. N. D'ANDRIA..