Improvements in Converting Ferrous Chloride into Ferric Chloride more especially intended for use in connection with the Separa- tion of Bismuth or Antimony from their Sulphide Ores.
Year: 1899

page_text: Date of Application, 13th June, 1893
Complete Specification Left 16th Feb 1900-Accented 7th Apr. 1900
Improvements in Converting Ferrous Chloride into Ferric Chloride
more especially intended for use in connection with the Separa-
tion of Bismuth or Antimony from their Sulphide Ores.
I, JOHN RANALD, of 62, Streatham Hill, in the County of London, Gentleman, do
hereby declare the nature of this invention to be as follows:-
My invention has for its object to provide improved means for the conversion of
ferrous chloride into ferric chloride and it relates more especially to a process for which
I have applied for Letters Patent No. 16622 of the 30th July A.D. 1898.
According to my present invention, and as applied to the said process, I add potassium
chlorate to the ferrous chloride liquor when still hot, which said potassium chlorate
causes the oxidation of the ferrous. chloride into ferric chloride. At the same time
separation of ferric hydrate may take place and this can either be separated, or he
converted into ferric chloride by the addition of hydrochloric acid.
1000
. JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.
Improvements in Converting Ferrous Chloride into Ferric Chloride
more especially intended for use in connection with the Separa-
tion of Bismuth or Antimony from their Sulphide Ores.
I, JOHN RANALD, of 62, Streatham Hill, in the County of London, Gentleman,
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:
My invention has for its object to provide improved means for the conversion of
ferrous chloride into ferric chloride and it relates more especially to a process for
which I have obtained Letters Patent No. 16622 dated the 30th July A.D. 1898.
According to my present invention, and as applied to the said process, I add potassium
chlorate to the ferrous chloride liquor when still hot, which said potassium chlorate
causes the oxidation of the ferrous chloride into ferric chloride.
This takes place in accordance with the following equation :-
6 Fe Cl. K CI O, + 3 H₂O
========
4 Fe Cl 2 Fe (OH), + KCl.

page_text: The process is best carried out in the vat or vessel, in which the ferric chloride
liquor is required, that is the vat or vessel in which the ore is to be treated. The
potassium chlorate should be added by degrees and it is advisable to add an amount
slightly under the calculated full quantity in order to avoid the possibility of free
chlorine being generated.
At the same time separation of ferric hydrate may take place and this can either
be separated, or be converted into ferric chloride by the addition of hydrochloric acid
in amount calculated from the foregoing and following equations :-
This method of conversion of ferrous chloride into ferric chloride can be applied in
the conversion into ferric chloride of ferrous chloride generally, such for example as
that obtained in the treatment of bismuth and antimony sulphide ores according to
the specification of my application for Patent 16622 of 30th July 1898.
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-
1. The conversion of ferrous chloride to ferric chloride by treating the ferrous
chloride liquor whilst hot with potassium chlorate substantially as hereinbefore
described.
2. The conversion of ferrous chloride to ferric chloride by treating the ferrous
chloride liquor whilst hot with potassium chlorate and separating ferric hydrate which
forms substantially as hereinbefore described.
3. The conversion of ferrous chloride to ferric. chloride by treating the ferrous
chloride liquor whilst hot with potassium chlorate and converting the ferric hydrate
which forms into ferric chloride by means of hydrochloric acid substantially as
herein before described..
Dated this 16th day of February 1900.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.