US24828A

US24828A - Improvement in furnaces

Info

Publication number: US24828A
Authority: US
Publication date: 1859-07-19
Anticipated expiration: 1876-07-19

Description

L. SOLOMON.

Furnace for Roasting Ores.

No. 24,828. Patented .July 19, 1859.

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UNITED STATES i PATENT OEEICE.

LEWIS SOLOMON, OF NEV YORK, N. Y.

IMPROVEMENT IN FURNOES.

Spccicationfornling part of Letters Patent No. 24,828, dated July 19, 1859.

To all whom it may concern.-

Be it known that I, LEWIS SOLOMON, of New York, in the county and State of New York, have invented a new and Improved Furnace for Roasting and Desulphurizing Orcs; and I do hereby declare that the following is a full,

, clear, and exact description thereof, reference being had to the accompanying drawings, through letters of reference marked thereon, forming part of this specification, in which* Figure l represents an isometrical view of my furnace, Fig. 2, a longitudinal section, and Fig. 3 a transverse section, of the same.

The same letters of reference occurring in the several figures indicate corresponding parts.

My invention consists in constructing a furnace in such manner .that the heat and iiame from the fire shall pass first under and then over a layer of the pulverized ore, which is tion, I will proceed to describe its construcv tion and operation.

rIhe furnace is built of brick or other suitable material, in form similar to that represented in the drawings7 Fig. l, in which A represents the fire-place; B, the grate-bars; C, the hre-door; D, the ash-pit, and E the flues under the sole F of the roasting-chamber G; O, the flue-passages into the chimney H. I represents a chamber in the base of the chimney, and Q the door or entrance to the same. J is a compartment under the center of the roasting-chamber, into which the roasted ore is discharged through an opening, K, in the sole F, which opening may be closed by a trap-piece, T, and the compartment provided with a door, S. L represents the arch or other covering of the roasting-chamber G, and which is provided with a funnel-shaped aperture, M, at or near its center, for the introduction of the pulverized ore, and which is closed by a sliding bottom, N. l? P P P PW are doors arranged on two sides of the roasting-chamber G, to afford an opportunity to stir the ore thoroughly during the process of roasting. R is a box to be placed in the compartment J as a receptacle for the roasted ore. U is a damper in the chimney to regulate the draft of the furnace. Plugs W are arranged at the end to afford access to the ilues for the purpose of n Y `cised in the management of the furnace, so that too high a degree of heatshall not be brought to act upon the ore, as such would result in volatilizing a portion of the precious metals and in driving it off through the chimney. It may, however, be gradually increased as the process advances without fear of incurring such loss, for the more effectual and thorough completion of the process; but as there will still be a portion of the precious metals volatilzed, notwithstanding the utmost care that may be exercised in the regulation of the heat during the process of roasting, and as the density'of the particles will gradually increase the farther they recede from the action of the fire and near the cooling iniiuence of the atmosphere, and that to an extent sufiicient to overcome the upward-propelling force of the'rarefled air, 85e., and hence by virtue of their increased specific gravity be precipitated to the bottom of the chimney, I there arrange a chamber, I, for their reception, and for the reception of other heavy and extraneous particles that may be driven off from the ore by the heat of the furnace, whose specific gravity is too great to be expelled from the chimney by the ascent of the heated air, smoke, sulphurous and muriatic vapors, 83e., which result from the process, from which, fater the process is completed, or when a large amount has accumulated, it may be recovered by opening the door S ink the bottom of the chimney I, and treated in any suitable manner for the reclamation of the precious metals. For the purpose of carrying these instructions into effect, the doors P P', 85e., are occasionally opened and the ore stirred to prevent too rapid an accumulation of heat, especially dur` ing the irst part of the process, after which, however, there will be less necessity for such, as the temperature can then be gradually raised to a much higher degree of heat, and there maintained until all the sulphurous and muriatic orV hydrochloric vapors have been expelled, a damper, U, being arranged in the chimney, by inaens` of which the temperature of the roasting-chamber can be raised or lowered, as desired.

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

So constructing a desulphurizing-fur1iace for- .the furnace and afterward on the surface of the ore, when the saine is combined With a chamber arranged in the base of the chimney for the reception of such volatilized particles of ore, 85e., as may be ldriven off by heat or carried over by the draft, substantially as described.

In testimony whereof I have hereunto set my hand, before two subscribing witnesses, this 27th day of April, A. D. 1859.

itnwisY SOLOMON.

NVitnesses:

DANL. SErXAs, JosErH SOLOMON.