Improvements in the Manufacture of Hydrate of Baryta and of Strontia.
Year: 1887

page_text: Date of Application, 21st Oct., 1887
Complete Specification Left, 20th July, 1888
Complete Specification Accepted. 31st Aug., 1888
Improvements in the Manufacture of Hydrate of Baryta and
of Strontia.
We THE TYNE ALKALI COMPANY Limited of 4 St. Nicholas Buildings Newcastle
on Tyne and THOMAS GIBB of South Shields in the County of Durham Chemist do
hereby declare the nature of this invention to be as follows:-
This Invention relates to the manufacture of hydrate of Baryta or of Strontia from
Sulphide of Barium or of Strontium.
According to this Invention Sulphide of Barium or of Strontium is mixed with
hydrated peroxide of iron in a pulverulent state such for example as that known
as bog iron ore which may most conveniently be effected in tanks provided with
filter beds such as are employed in lixiviating black ash in alkali works. Water
is caused to circulate through the mixture and this water and the solution obtained
by it are preferably maintained in a heated condition. As the circulation continues
hydrate of Baryta or of Strontia is produced by re-action between the hydrated
peroxide of iron and the Sulphide of Barium or of Strontium.
It is preferred to discontinue the circulation before all the Sulphide of Barium or
of Strontium which the mixture contains is oxidized as otherwise the operation would
be inconveniently prolonged and insoluble Salts would be produced. The solution is
run into cooling vessels and hydrate of Baryta or of Strontia crystallizes out leaving
in the mother liquor nearly the whole of the Sulphide of Barium or of Strontium that
existed in the solution when it was run into the coolers.
The crystals of hydrate of baryta or of strontia may be separated from the mother
liquor in any suitable way as by draining and more completely by a hydro extractor.
Dated this 19th day of October 1887.
J. H. JOHNSON, & Co.,
47, Lincoln's Inn Fields, W.C.,
Agents.

page_text: DI BUITIUAIION.
Improvements in the Manufacture of Hydrate of Baryta and
of Strontia.
We THE TYNE ALKALI COMPANY Limited of 4 St. Nicholas Buildings Newcastle
on Tyne and THOMAS GIBB of South Shields in the County of Durham 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:-
This Invention relates to the manufacture of hydrate of Baryta or of Strontia from
Sulphide of Barium or of Strontium.
According to this Invention Sulphide of Barium or of Strontium is mixed with
hydrated peroxide of iron in a pulverulent state such for example as that known as
bog iron ore which mixing may most conveniently be effected in tanks provided with
filter beds such as are employed in lixiviating black ash in alkali works. Water is
caused to circulate through the mixture and this water and the solution obtained by it
are preferably maintained in a heated condition. As the circulation continues hydrate
of Baryta or of Strontia is produced by reaction between the hydrated peroxide of
iron and the sulphide of barium or of Strontium.
For practical convenience and economy weak solutions of Barium or Strontium
obtained say as washings in a previous operation may be used instead of water.
It is preferred to discontinue the circulation before all the Sulphide of Barium or of
Strontium which the mixture contains is oxidised as otherwise the operation would be
inconveniently prolonged and insoluble salts would be produced. The solution is run
into cooling vessels and hydrate of Baryta or of Strontia crystallizes out leaving in
the mother liquor nearly the whole of the Sulphide of Barium or of Strontium that
existed in the solution when it was run into the coolers. The crystals of hydrate of
Baryta or of Strontia may be separated from the mother liquor in any suitable way
such as by draining and more completely by a hydro extractor.
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 manufacture of hydrate of Baryta or of Strontia by submitting a mixture of
Sulphide of Barium or of Strontium with hydrated peroxide of iron to the action of a
current of water or solution as hereinbefore explained and afterwards crystallising out
the hydrate of Baryta or of Strontia from the solution obtained substantially as
hereinbefore described.
Dated this 20th day of July 18
1000.
THE TYNE ALKALI COMPANY,
By J. Ions Clark,
Secretary.
THOMAS GIBR
LIMITED.

page_text: Date of Application, 21st Oct., 1887
Complete Specification Left, 20th July, 1899
Complete Specification Accepted, 31st Aug., 1888
Strontium Compounds and the Obtainment of Products therefrom.
We, The Tyne ALKALI COMPANY Limited of 4 St. Nicholas Buildings Newcastle-
on-Tyne and THOMAS GIBB of South Shields in tho County of Durham Chemist do
hereby declare the nature of this Invention to be as follows:-
-
According to this Invention the solutions containing Barium or Strontium
compounds are subjected to the action of a current of air or of air and steam which
may be effected by blowing the air or the air and steam through the solutions. Say
it is a solution containing Sulphide of Barium or of Strontium that is being treated
by blowing air or air and steam through it Barium or Strontium is thereby pre-
cipitated in combination with Sulphur and Oxygen mainly as Hoposulphite of Baryta
or of Strontia. The process described may be applied generally to the separating
of Barium and Strontium from solutions containing Polysulphides and Hydrate of
either for example to mother liquors obtained in the manufacture of Hydrate of
Baryta and Strontia by blowing air through solutions of Sulphide of Barium or
of Strontium and subsequent crystallization of Hydrate of Baryta or of Strontia. We
may utilize the precipitate deposited by the process described by using it instead
of Mineral Sulphate of Baryta or of Strontia for the production of Sulphide of
Barium or of Strontium or we may decompose the precipitate by means of an Alkaline
Salt in solution producing thereby Alkaline Hyposulphite and a Salt of Barium or
of Strontium corresponding to the Alkaline salt used or we may decompose it by an
acid producing the corresponding salt of Barium or of Strontium and Sulphurous
acid and Sulphur both of which may be utilized as desired.
Dated this 95th day of Novembar 1887.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, W.C.,
Agents.

page_text: Strontium Compounds and the Obtainment of Products therefrom.
We, THE TYNE ALKALI COMPANY Limited of 4 St. Nicholas Buildings Newcastle
on Tyne and THOMAS GIBB of South Shields in the County of Durham, 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:
According to this Invention the solutions containing barium or strontium
compounds are subjected to the action of a current of air or of air and steam which
may be effected by blowing the air or the air and steam through the solutions. Say
it is a solution containing sulphide of barium or of strontium that is being treated by
blowing air or air and steam through it the barium or strontium is thereby pre-
cipitated in combination with sulphur and oxygen mainly as hyposulphite of baryta
or of strontia. The process described may be applied generally to the separating of
barium and strontium from solutions containing polysulphides and hydrate of either
for example to mother liquors obtained in the manufacture of hydrate of baryta or of
strontia by reaction with hydrated peroxide of iron or by blowing air through
solutions of sulphide of barium or of strontium and subsequent crystallization of
hydrate of baryta or of strontia. We may utilize the precipitate deposited by the
process described by using it instead of mineral sulphate of baryta or of strontia for
the production of sulphide of barium or of strontium or we may decompose the
precipitate by means of an alkaline salt in solution producing thereby alkaline hypo-
sulphite and a salt of barium or of strontium corresponding to the alkaline salt used
or we may decompose it by an acid producing the corresponding salt of barium or
of strontium and sulphurous acid and sulphur both of which may be utilized as
desired.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the sanie is to be performed we declare that what
we claim is
1. The obtainment of products from solutions containing barium or strontium..
compounds by subjecting the said solutions to the action of a current of air or of
air and steam substantially as hereinbefore described and the use of the products so
obtained.

page_text: 2. The obtainment of products from solutions containing barium or strontium
compounds by subjecting the said solutions to the action of a current of air or of air
and steam and decomposing the resulting precipitate by means of an alkaline salt
or of an acid substantially as hereinbefore described and the use of the products so
obtained.