Improvements in Apparatus for Collecting Metallic Fumes.
Year: 1895

page_text: Date of Application, 17th Sept., 1895
Complete Specification Left, 15th June, 1896-Accepted, 12th Sept., 1898
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Collecting Metallic Fumes.
I, JAMES WOOLFORD, of No. 659 Commercial Road East, in the County of
London, Metallurgist, do hereby declare the nature of this invention to be as
follows:-
In many metallurgical operations ores or compounds of metals are treated with
fuel in furnaces so as to produce fumes consisting of gaseous products of
combustion in which oxide or other compound of the metal is suspended in a finely
subdivided condition.
By passing these funies through depositing chambers and cooling passages, more
or less of the metallic matter suspended in them can be collected, but in many cases
a considerable proportion finally escapes along with the gases.
My invention relates to means of more efficiently collecting the suspended
metallic matter so that little or none of it can escape. For this purpose, I employ
a suction fan to provide draught for the furnace in which the ore or compound is
treated and to draw the gases and fumes through the successive depositing chambers
and cooling passages. Into this fan, through which all the gases and residuary
fumes have to pass on their way to a chimney or other discharge, I admit a certain
inflow of water which, being broken up by the fan blades and thoroughly mingled
with the fumes, retains the metallic matter in admixture with it, and carries it out
The metallic matter thus
by discharge apertures into suitable receptacles.
collected can afterwards be separated from the water by subsidence, filter pressing
or otherwise.
Contamhan 1805
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Apparatus for Collecting Metallic Fumes.
I, JAMES WOOLFORD, of No. 659 Commercial Road East, in the County of
London, 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 :—
In many metallurgical operations ores or compounds of metals are treated with
fuel in furnaces so as to produce fumes consisting of gaseous products of combustion
in which oxide or other compound of the metal is suspended in a finely subdivided
condition. By passing these fumes through depositing chambers and cooling
passages, more or less of the metallic matter suspended in them can be collected,
but in many cases a considerable proportion finally escapes along with the
gases.
My invention relates to means of more efficiently_collecting the suspended
metallic matter so that little or none of it can escape. For this purpose, I employ
a suction fan to provide draught for the furnace in which the ore or compound is

page_text: treated, and to draw the gases and fumes through the successive depositing
chambers and cooling passages.
Into this fan through which all the gases and residuary fumes have to pass on
their way to a chimney or other discharge, I admit a certain inflow of water which,
being broken up by the fan blades and thoroughly mingled with the fu.nes,
retains the metallic matter in admixture with it, and carries it out by discharge
apertures into suitable receptacles. The metallic matter thus collected can
afterwards be separated from the water by subsidence, filter pressing or
otherwise.
Fig. 1 of the accompanying drawings is an elevation partly in section and Fig. 2
is a transverse section of the fan and water nozzle applied according to my invention
for collection of metallic fumes.
A is the conduit leading the fumes from the depositing chambers and cooling
passages to the suction fan B.
In the passage A is arranged a distributing nozzle E by which water is sent, in
spray, to mingle with the fumes as they enter the fan, the blades of which break
up the water and dash it about along with the fumes causing separation of the
particles suspended in them..
While the fumes thus cleared of the suspended particles pass away by the
conduit C. to a chimney or other discharge, the water mixed with the solid particles
collects in the lower part of the fan and flows out to depositing tanks D in which
the solid material is collected.
Instead of sending water alone by the nozzle E, water mingled with steam may
be sent into the conduit, the steam being used as an injector jet to cause the water
to leave the nozzle with great speed and in a greatly subdivided condition.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed I declare that what I
claim is
The herein described method of collecting the metallic particles suspended in
fumes after passing the ordinary cooling conduits and collecting chambers, by
mingling these fumes in a suction fan with water.
Dated this 15th day of June 1896.
ABEL & IMRAY,
Agents for the Applicant.