Improvements in Smelting Furnaces.
Year: 1890

page_text: Date of Application, 6th Sept., 1890-Accepted, 13th Dec., 1890
COMPLETE SPECIFICATION.
Improvements in Smelting Furnaces.
1, FRIEDRICH AUGUST HERBERTZ, of Cologne on the Rhine, Germany, Manu-
facturer, 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 refers to improvements in smelting furnaces, to the employment of a
steam jet or jets therewith, to adjustable circular air entrances, to the construction and
arrangement of the tapered suction pipe cr pipes and to the arrangement for charging
the furnace all as hereafter described
In order that my invention may be fully understood and readily carried into
practical effect I will now fully describe the same with reference to the accompanying
drawings.
Figure 1 is a vertical longitudinal section showing a smelting furnace constructed
according to my said invention.
Figure 2 is a horizontal section taken through the lower part of Figure 1, and
Figure shows in elevation transversely of Figure 1, the arrangement of the
tapered suction pipe or pipes.
Similar letters of reference refer to like parts in all the figures.
The shaft S, Figure 1 of the furnace is carried loosely by the brackets C which rest
upon the bearers T; under the said shaft are two water cooled annular chambers K
and K', each consisting of several cooling chests as clearly shown at Figure 11 and
under these circular coolers is the movable and adjustable hearth H Figure 1 of the
furnace.
The annular chambers K and K' are adjustably suspended under the shaft S by
means of the hanging bolts B and B which are carried by the brackets C, and by the
carriers E and E which surround the annular water cooled chambers K K In
connection with the movable hearth are formed (by means of the said annular
chambers K K) two adjustable annular air entrance passages O and 01. The suction
of the gases and the consequent entrance of the atmospheric air through both the
annular air openings and O¹ into the shaft S is effected through the suction
pipe R, 1, R, and the steam injector J.
When treating finely granulated or pulverized materials the non-gaseous portion of
the furnace smoke immediately it comes in contact with the steam from the injector is
deposited on the walls of the pipe, now in order to remove this collection without
interfering with the working, two pipes R' R' as shown in side elevation at Figure III
are mounted on a carriage W which runs on rails and as soon as a deposit has formed
in one of these pipes a clean pipe may be quickly substituted and the pipe which has
been used may be cleaned and this without interfering with the working as aforesaid.
In order as much as possible to prevent the collection of deposit, there is in the
upper part of the shaft a depending tube D which is supported by four ribs P,
Figure 1, upon the funnel V and the tube D reaches up to underneath the bell-
covering G. The pulverized material is fed in through the damper L. into this pipe
and thereby carried below the suction opening of the furnace, whilst coarser materials
and coke reach the shaft of the furnace outside the pipo D through spaces between
the hopper Vand hell-covering G and by the lifting of the latter. In order to
effect a more intense suction I may employ several pipes R' each with a steam
nozzle J, all however proceeding from a common main suction pipe R and again
opening into a common main suction pipe R².

page_text: Having now particularly described and ascertained the nature of my said invention
and in what manner the same is 17 ho performed i declare that what I claim is: -
1. In smelting furnaces with steam jets, the application thereto of two or more
adjustable annular air entrance passages () ()' substantially as and for the purposes
herein set forth.
2. In smelting furnaces, the changing of the parts of the suction pipe 1ª (such
pipe or pipes tapering down close beneath the steam nozzle and then again widening)
by means of a carriage or other equivalent arrangement provided with two or more
of such suction pipe parts R', as also the employment of several suction pipes R
with steam nozzles in communication with a common main suction pipe, all
substantially as and for the purposes described and illustrated with referener to the
accompanying drawings.
3. The sinking furnaces, the use and employment of the funnel pipe D projecting
below the suction opening in the upper part of the shaft S for charging the farmace
with pulverize materials thereby obtaining the least possible formation of smoke
substantially as and for the purposes set forth.
4. The general arrangement, construction and combination of parts comprising my
improvements in sinelting furnaces all substantially as and for the purposes described
and illustrated with refer new to the accompanying drawings together with any mere
unodification or molifications thereof.
Dated this 6th day of September 1890.
BREWER & SONS,
Agents.