US1172222A - Metallurgical furnace and furnace parts. - Google Patents

Description

T. w. MUCKLE.

METALLURGICAL FURNACE AND FURNACE PARTS.

APPLICATION 'FiLED JUNE 1, 1315.

T E E H s M s T E E .H S 2 l vi, themes j T. W. MUCKLE.

METALLURGICAL FURNACE AND FURNACE PARTS.

APPLICATION FILED JUNE 1. 1915.

1,1?222. Pafented Feb. 15,1916.

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THEODORE W. MUCKLE, 0F DENVER, COLORADO, ASSIGNOR TO WILLIS W. CASE, 335%.,

01? DENVER, COLORADO.

METALLURGICAL FURNACE AND FURNACE PARTS.

Specification of Letters Patent.

Patented lFelo, is, new,

Application filed. June 1, 1915. Serial No. 31,500.

This invention relates to improvements.

in metallurgical furnaces and furnace parts, and while it is more particularly applicable to that type of furnaces in which a liquid fuel is forced into the combustion chamber of the furnace, still some of its features might be used advantageously in other re-- lations.

The primary object of the invention is to provide a more efficient furnace than heretofore constructed, and the features of advantage will appear in the following specification.

With this end in view the invention con sists in the novel elements of construction in themselves, and in the combination and arrangement of same as will be more fully described in the specification and particularly pointed out in the appended claims.

While the invention is not restricted to the exact details shown and described, still, for the purpose of more fully understanding the same, reference is had to the accompanying drawings, illustrating a practical embodiment of the invention, in which drawings like characters designate the same parts in the several views, and in which Figure 1, is a longitudinal sectional View through the furnace, the burner boss being partly broken away, and the burner and fan blower connections being shown in elevation. Fig. 2, is a horizontal sectional view taken along the line 22 of Fig. 1, a portion of the shelf being shown broken away. Fig. 3, is a vertical sectional View taken on the line 3'3 of Fig. 2, a section of the burner boss being shown in dotted lines, illustrating its removability. Fig. 4, is a front elevational detail view of the burner boss with its parts shown in closed relation; Fig. ,5, is a similar view in side elevation; and Fig. 6 is a view in vertical section taken along the line 6-6 of Fig.4, and Fig. 7, is a detail perspective view of a preferred form of one of the replaceable pedestals serving as heat distributors and muffle plate support.

1 designates a hollow sectional furnace body of fire. clay, having a forward openmg or door 2, the upper portionofthe furnace body 3 providing the muffle chamber, and the lower portion 4- providing for the combustion chamber. 5 is the muffle provided with a tubular projection 6, located below a flue 7, having a damper 8, the Whole coiipcrating to create a suction or ejector force through said tubularprojection to facilitate the discharge of fumes and gases from. said mufiie. 9 is another flue having a damper 10, and both flues open into the muffle chamber; 11 is a shelf at the forward opening or door of the muffle chamber, and 12 is an iron sheathing incasing the furnace, the furnace being supported on a suitable stand or framework 13. 14 designates a liquid fuel burner of a preferred type, 15 the oil pipe leading thereto, and 16 the air or blast pipe connected to the burner and to'the fan blower 17 These parts are not necessarily included in their entirety as a part of the present invention, having been formerly patented, but they are essential elementsin the perfection of the furnace as a whole unit. I

To now describe the several new features, which I consider as embracing my present invention, it will be noted that in the front wall of the furnace, below the shelf 11, I provide a burner opening 18, and the location of this burner opening in the front wall is considered very important, as it enables the operator to control the burner, while inspecting the contents of the muffle, instead of having to go around to the rear of the furnace to regulate the burner, where the burner entrance has heretofore been located, and where he cannot inspect the contents of the mufiie. This burner opening also admits of another important advantage which will .ing to the atmosphere from the combustion chamber. This relieves the compression within the combustion chamber upon iniill) tially igniting the charge, a desirable feature, as it has been found that this compression and the compact of the flame, frequently blows the muffle from its seat, spilling the contents of the ore containing vessels in the muflle, or breaks the muffle itself. This movableclosure also permits of the inspection of the combustion chamber and the condition or extent of combustion therein, even while the burner is being regulated. It forms no special feature of the burner, but is a part of the furnace itself, and cooperates therewith more particularly than with the burner. I wish to state, however, that I do not limit myself to the particular form of this closure, as it may be variously designed and made in one or more parts of iron, lire clay, or other suitable substance; but in the drawings 1 have illustrated a practical segmental form of a burner boss,

which is designated at 19 as being of conical structure.

lhe lower section 20 is shown with a flange 21, which-is bolted to the sheathing 12, and the upper section 22 may have tongues or ribs23, and adapted to fit into grooves 24, formed in the lower section, to

prevent accidental displacement of the members when assembled. The upper or movable section may also be provided with an apertured lip or lug 25, to enable a rod to be hooked in the apertured lug for lifting up said movable closure and replacing the same on the stationary closure. Thus it will be seen, more clearly from Figs. 1 and 3, that when the closure 22 is removed a substantial opening 26 is provided above the burner to relieve the compression in the combustion chamber, and after the furnace is fired this cover is then replaced during further operations. It may also be removed for inspecting the condition or extent of combustion.

Fig.7 shows in detail a particular style of flame deflector pedestals 27, which may be arranged in offset positions, as shown in Fig. 2, but the forward pedestal, as shown in Fig. l, is a little shorter than the remain-- ing ones, in order that it may readily be moved or adjusted to properly deflect the incoming combustible charge to the ofl'set pedestals, which in turn divide and split up the flame and products ofcombustion, causing an even distribution of intensified heat, said pedestals being formed of lire clay or other highly refractory material, and acting as heaters as well as deflectors .and supports. These pedestals are of elongated construction, triangular in cross section, and having unbroken, smooth surfaces.

Instead of directly supporting the muille on the pedestals 27, I now provide an imperforate fire clay plate 28, detachedly supported above the combustion chamber, and which practically forms a division plate between the combustion chamber and the ore treating chamber, a narrow space being left between the edges of the plate and the interior walls of the furnace, to permit of the resultant heat from the flames of combustion to .be diverted into the ore treating chamber, and the muffle or other ore containing vessel being flatly or directly and positively seated on said pl te, without the intervention of stools or pedestals. 1 consider this muflie plate very important, for oftentimes the pedestals wear or chip off rendering them of slightly different heights, and the muffle would be unevenly supported and wabbly, tending to spill the contents being broken by the strain or shock of initial combustion when the furnace is first fired, the mullie plate being readily replaceable, if broken, at a much less expense than the muflle itself.

It is believed that, in view of the drawings and the foregoing complete statement of the furnace and the function of its parts, furtherdescription of same and the mode of operating would be unnecessary and superfluous, and

Having thus described my invention, what I claim is 1. In a metallurgical furnace, having a combustion chamber, a mufie chamber, and a burner opening, in combination with a burner, a plurality of flame diverting elongated pedestals, triangular in cross-section,

arranged in oflset positions in said combustion chamber, one of said pedestals being disposed adjacent said burner opening, and being of lesser height than the other of said pedestals, substantially as described.

2. A metallurgical furnace part, consisting of a flat imperforate plate detachedly supported'and readily replaceable within said furnace, substantially above the bottom of the combustion chamber, forming a top for said combustion chamber and a bottom for the ore treating chamber, and said plate being slightly less in dimensions than the interior of the furnace, and adapted to flatly and positively support an ore treating vessel, without the intervention of supporting stools.

3. A metallurgical furnace comprising walls forming a hollow interior;-an imperfo-rate, readily replaceable flat plate detach edly supported therein, and dividing said interior into a combustion chamber and an ore said ore treating chamber, the edgesof said plate being slightly spaced from the Walls of the furnace; and a fuel burner dischar ing into said combustion chamber below said late. p 4:. A metallurgical furnace, comprising walls forming a hollow interior of uniform dimensions; an imperforate readily replaceable refractory plate detachedly supported therein and dividing said interior into a combustion chamber and a mufiie chamber, said plate extending substantially the length and'breadth of said uniform interior but slightly spaced at its edges therefrom, and

adapted to flatly and positively support a muiile without the intervention of supporting stools; and a fuel burner discharging into said combustion chamber below said plate, whereby said plate receives on its Whole under surface the direct impact of the flames of combustion and baflies the resultant heat around its spaced edges into said muffle chamber.

In testimony whereof, I affix my sigmature, in presence of two Witnesses.

THEODORE W. MUCKLE.

Vitnesses MARY HELEN GREEN, SETH PARLIN.

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