An Improved Process and Means for Producing the Generation of Chlorine Gas for the Chlorination of Gold or other Ores.
Year: 1890

page_text: Date of Application, 12th Aug., 1890-Accepted, 13th Seot., 1890
COMPLETE SPECIFICATION.
An Improved Process and Means for Producing the Generation of
Chlorine Gas for the Chlorination of Gold or other Ores.
Í CLAUDE THEODORE JAMES VAUTIN, of Somerset Mansions, Welbeck Street, in
the County of Middlesex, Metallurgist, 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 relates to an improved process and means for producing the genera-
tion of chlorine gas in situ with the materials in a suitable vessel where a chemical
reaction is required on the part of the chlorine, such for instance as in the chlorinating
process for the treatment of gold bearing ore and consists in the employment in a
suitable vessel of certain reagents other than free acids which are free from many
disadvantages in transit and storage attaching to such free acids as are ordinarily in
use in chlorinating processes. My process and reagents are as follows:-
In a vessel or chamber, containing the material on which it is desired to produce
a chlorinating effect, I introduce a suitable charge of chloride of lime and to the
chloride of lime 1 add perchloride of iron or equivalently chloride of manganese in
the proportions of about equal weights of the said re-agents, and to these I add
about 5% of water which shall be sufficient to enable perfect admixture of the
reagents, the result is mutual decomposition of the reagents and the production of the
chlorine gas.
To produce the maximum effect the vessel is closed during the generation of the
chlorine to accumulate the effect, and to prevent the escape of the disengaged chlorine
gas; and agitation is provided by a rotating agitator or the rotation of the vessel
itself, a leaching bed being also conveniently provided therein or used as an auxiliary
filter.
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The re-action between the said chloride of lime and perchloride of iron may be
thus expressed Ca O Cl, Fe, Cl + aqua Fe, 0, +3 Ca Cl₂ + 3 Cl₂ + aqua
and the residue after reaction being insoluble in water, the soluble metal bearing
chloride formed by the free chlorine gas from the material exposed to chlorination,
uay be readily removed in solution in a pure condition by washing through the said
filter bed.
Both the above reagents which I employ in this chlorinating process are perfectly
safe and harmless for transport in the ordinary paraffin casks or drums.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1st. A process for the chlorinating of gold or other material by treatment thereof
in a suitable vessel with chloride of lime and perchloride of iron in about equal
proportions or equivalent chloride of manganese with a small addition of water thereto
sufficient to cause perfect admixture of the reagents and material to effect the
liberation of free chlorine substantially as and for the purposes described.
2nd. The means employed in the said process viz. chloride of lime and perchloride
of iron or equivalent chloride of manganese with added water used in combination
and mixed with the material to be chlorinated, a vessel readily closed air-tight and
provided with an internal agitator or capable of being agitated by rotation, substan-
tially as and for the purposes described
Dated this 12th day of August 1890.
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.