Improvements in and relating to the Treatment of Refractory Sulphide Ores.
Year: 1899

page_text: Date of Application, 7th Feb., 1899
Complete Specification Left, 7th Nov., 1899-Accepted, 16th Dec., 1899
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Treatment of Refractory
Sulphide Ores.
I, WILLIAM Ross HUTTON, of 93, Hope Street, in the County of the City of
Glasgow, Consulting Chemist, do hereby declare the nature of my invention
to be as follows:-
-
This invention has reference to a new or improved process or method of
recovering the zinc and lead from the fumes of refractory sulphide ores, such
as the silver ores obtained in the Bioken Hill mines in the Colony of Victoria.
According to my improvements I use nitrate of soda to convert the sulphurous
acid into sulphuric acid and so convert the zinc into sulphate.
This may be done by using a concentrated solution of nitrate of soda and
mixing and saturating the ore with same before placing the ore into the furnace
which may be either a reverberatory or a cupola.
The chemical reaction goes on with the gaseous products in furnace where
the zinc is converted into sulphate, and steam is injected or blowing or exhaust
fans used to carry the fumes over into water tanks where the sulphate of zinc
becomes soluble, and the lead remains insoluble, and the zinc can then be
separated and recovered in an ordinary manner.
Instead of saturating the ore with the nitrate of soda before placing the ore
in furnace, solid or granulated nitrate of soda may be placed in furnace along
with the ore for the re-action to take place when the gases are generated
Dated the 6th day of February 1899,
W. R M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
Improvements in and relating to the Treatment of Refractory
Sulphide Ores
I, WILLIAM Ross HUTION, of 93, Hope Street, in the County of the City of
Glasgow, Consulting Chemist, do hereby declare the nature of my 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 has reference to a new or improved process or method of
recovering the zinc and lead from the fumes of refractory sulphide ores, such
as the silver ores obtained in the Broken Hill mines in the Colony of Victoria.
According to my improvements I use nitrate of soda to convert the sulphurous
acid into sulphuric acid and so convert the zinc into sulphate..

page_text: This may be done by using a concentrated solution of nitrate of soda and
mixing and saturating the ore with same before placing the ore into the furnace
which may either be a reverberatory or a cupola
The chemical re-action goes on with the gaseous products in furnace where
the zinc is converted into sulphate, and steam is mjected or blowing or exhaust
fans used to carry the fumes over into water tanks where the sulphate of zinc
becomes soluble, and the lead remains insoluble, and the zinc can then be
separated and recovered in an ordinary manner.
Instead of saturating the ore with the nitrate of soda before placing the ore
in furnace, solid or granulated nitrate of soda may be placed in furnace along
with the ore for the re-action to take place when the gases are generated.
When treated in a cupola furnace, ordinary fluxes would be used.
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
First. In the treatment of refractory sulphide ores, the process of recovering
the zinc and lead, substantially as set forth
Second In a process for recovering zinc and lead from sulphide ores, the
use of nitrate of soda, substantially as and in the manner set forth
Dated the 6th November 1899.
W. R M. THOMSON & Co,
96, Buchanan Street, Glasgow, Agents.