US866323A - Reduction-furnace. - Google Patents

Description

' No. 866,323. PATENTED sEPT.-17, 190.7.

R. L. BAUMLINE. REDUCTION FURNACE.

AIPLIGATION FILED JULY 30. 1906.

RIOHARD L. BAUMLINE, OF AUBURN, NEW YORK.

REDUCTION-FURNACE Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed July 30,1906. Serial No. 328,374,

To all whom it may concern:

Be it known that I, RICHARD L. BAUMLINE, a citizen of the United States, residing at Auburn, in the county of Cayuga and State of New York, have invented a certain new and useful Improvement in Reduction-Fun naces, of which the following is a specification.

My invention relates to that class of furnaces used in extracting metals from ores, or reducing metals to a molten state, or in the incineration of waste or garbage.

The object of my invention is the construction of a furnace to secure the most effective results with an economy of fuel and simplicity of operation, as will be hereinafter explained.

Referring to the drawings in which similar letters indicate corresponding parts, Figure 1 is a longitudinal vertical section of'my improved furnace, and Fig. 2 is a section on the line x-x of Fig. 1.

The combustion chamber A and the stack B are constructed of fire brick, or other suitable material, and are inclosed in a casing 1) preferably of boiler iron; a wall a separates the lower part of the stack B from the combustion chamber A, and has an opening I) therein of sufficient proportion to guarantee the best results of the reducing flame upon the ores or metals to be melted.

Within the stack B is a receiving chamber G formed of a fire resisting material such as plumbago. 1 construct the receiving chamber 0 in sections as shown, one section fitting within the other in a manner common to piping, presenting a continuous smooth inner surface; the flanges c of the sections resting upon supports 0 from the wall of the stack B and holding the receiving chamber 0 substantially central therein to insure an even distribution of heat in the space between the receiving chamber 0 and the inner walls of the stack B. The supports 0 are shown as integral with the fire brick of the stack B, a construction to which I do not confine myself as it is obvious other means of supporting the receiving chamber may beemployed.

A hopper E rests in the top of the stack B and the receiving chamber 0. The lower end of the receiving chamber 0 extends but a short distance below the top of the opening I) and sufiiciently above the inclined hearth F to allow of a sufficient accumulation of ore thereon to be acted upon by the reducing flame.

My furnace is constructed to use liquid fuel, but I do not show or describe the particular form of liquid fuel burner employed, as numerous types of such burners are available for my purposes, and do not form part of my invention. A pipe a, from any suitable burner that may be employed, projects into the combustion chamber A through an opening a in the wall thereof. An opening b, for purposes of observation, is provided in the wall of the combustion chamber A just above the opening (1 I provide an opening b in the side of the combustion chamber A for the purpose of removing slag, or otherwise agitating the molten contents of the furnace. 1

In operation, the material to be reduced is dumped into the hopper until the receiving chamber 0 is full, and consequently a sufficient quantity is resting upon the inclined hearth F; the fuel is then turned on and ignited at the end of the pipe (1, the flame, as shown by dotted lines in Fig. 1, playing upon the ore or metal resting upon the hearth F beneath the lower end of the receiving chamber 0, reducing it to a molten state so that it will collect in the bottom of the combustion chamber A from which it can be drawn into crucibles through a sprue opening 1- as shown. The accumulated heat in the space surrounding the receiving chamber 0, and the heat which will naturally rise within the receiving chamber itself, will tend to heat and soften the ore or metal so that when the latter reaches the hearth and is met by the reducing flame it will be more quickly brought to a fluid or molten state. $uitable openings 2 and 3, with closures therefor as shown in dotted lines, may be provided in the stack B to regulate the heat between the receiving chamber and the inner wall of the stack.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is-

In a reduction furnace, the combination with a combus tion chamber and a stack connected therewith, the bottom of said combustion chamber extending beneath said stack, of a receiving chamber located within the said stack with a space around it for the passage of products of combustion around it, the lower end of said receiving chamber being a short distance above the bottom of'the combustion chamber, and a burner within the combustion chamber directing its flame upon the space between the receiving chamber and the bottom of the combustion chamber, substantially as described.

In testimony whereof I hereunto set my hand this 27th day of July 1906, in the presence of two attesting" Witnesses.

RICHARD L. BAUMLINE.

Witnesses:

EVA M. Srour, L. EUGENE TANNER.

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