US285462A - Territory - Google Patents

Description

(No Model.) -2 Sheets-Sheet 1. J. H. OANAVAN.

REVERBERATORY FURNACE.

No. 285,462. Y Patented Sept. 25, 1883.

N. PETERS, Pmmmrm n n (No' Model.)' 2 Sheets-Sheet 2.

J. H. GANAVAN.

REVERBERATORY FURNACE. No. 285,462. Patented Sept. 25, 1883.

UNITED. STATES ATENT' OFFICE JOHN HENRY GANAVAN, OF GLOBE, ARIZONA TERRITORY.

REVERB'ERATO RY FURNACE.

SPECIFICATION forming part of Letters Patent No. 285,462, dated September 25, 1883.

Application filed May 26, 1883. (No model.) 1 I To all whom it may concern:

Be it known that I, JOHN H. CANAVAN, of

Globe, county of Gila, Territory of Arizona,

plained by reference have invented an Improved Reverberatory Furnace; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to certain improvements in reverberatory furnaces to be used for smelting purposes; and it consists of an ovalshaped inclined floor with an arched crown or roof and a surrounding water-jacket, together with a partially inclosing wind box, with tuyeres and oil or petroleum jet tubes opening into the same, and in certain details of construction, all of which will be .more fully exto the accompanying drawings, in which' Figure I is a longitudinal vertical section, showing the interior of the furnace, the blast, oil, and water pipes, tanks, and tuyeres. Fig. 2 is a horizontal section, showing the arrangement of the wind-box, tuyeres, and oil-pipes.

A is the floor of my furnace, which is preferably inclined, as shown, and is made oval in shape. In the present case I have shown it in the proportion of fifteen feet long, nine feet in its greatest width, and five feet wide at the front and four feet at the rear end. Around the sides is a water-jacket, B, made of boileriron, which extends up to the crown, 0r about two feet, while the remainder of the height (about three feet) is filled in with clay and coke- 3 5 jacket for slag-taps.

dust. Openings 0 are left through the water- The bottom may be made of fine quartz or sand. Across the front area series of tuyeres, D, seven being shown in the present case. These tuyeres receive air from the wind-box E, which also extends around upon each side from the front, as shown, and other tuyeres, F, open into the furnace at this point. Air is supplied from any suitable blower or blast apparatus through the blast-pipe G.

R is the chimney, and S the escape-flue of the furnace.

At a proper height are placed oil-tanks I-I, from which pipes I lead down, and have discharge-pipes J entering the tuyeres a short dis tance, so as to deliver the oil at a point from which it may be carried into the furnace by the blast, thus producing an intense heat.

The waterjacket B is supplied with water through a pipe, K, from a tank, L, and an overflow-pipe, M, at the opposite end carries off the surplus.

The crown of the furnace maybe made of asbestus or brick, and has two passages, N, leading from hoppers 0 above, through which the ore is fed into the furnace.

This furnace is suitable for smelting ores of lead, copper, and silver, and is operated as follows: The inside of the furnace is lined up from the bottom with common clay. About five bushels of charcoal is put in and fired. The blower is started and the oil turned on, and afew minutes afterwardthe charge is let down. In about three hours the clay lining will be destroyed, and its place taken by a coating of slag about half an .inch thick all around the jacket, which prevents the chilling of the remainder of the contents of the furnace. The slag-tap opens into the furnace about two inches below the top of the water-jacket, and is kept open, so that slag will be running all the time when the furnace is in blast, there being a slagwell upon the outside. The furnace will thus be kept full of slag to within two inches of the top, the charges of ore being let down at intervals into the molten slag and copper, there being added about five per cent. of charcoal to deoxidize the metal. has accumulated in the furnacesay fivehundred pounds-it may be drawn ofi into molds through the opening P.

A furnace of the size herein described is capable of reducing from ninety to one hundred and fifty tons of ore in twenty-four hours.

A main stop-valve, Q, controls the flow of oil from the tank, and each tuyere has also a valve by which it may be cut off or regulated independent of the others.v

WVith this arrangement the heat in the fur nace may be raised in a few minutes from 500 to 4,000.

This mode of supplying air and oil mayalso be applied to brick-furnaces by having the tuyeres and wind-box set on the outside of the brick, or it may be applied to melting or heating furnaces in copper or in iron rolling mills.

I am aware that smelting-furnaces having a surrounding water-jacket, and also furnaces having two series of tuyeres for introducing When sufficient metaldifferent kinds of combustible gases, are old, and suchI do not wish to be understood as claiming, broadly, as of my invention.

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

1. In a horizontal reverberatory furnace, the surrounding waterjacket B, with, its supply and overflow pipes K and M, and the slagopenings 0, tuyeres D and F, and the metaldischarge opening 1?, all arranged with relation to each other substantially as herein described.

2. The improvement in horizontal reverberatory furnaces, consisting of asurrounding water-jacket with supply and discharge pipes, and a series of tuyeres opening through the front and sides, as shown, together with the feedopenings in the roof and discharge-openings, substantially as herein described.

3. In ahorizontal reverberatory furnace, the inclosing water-j acket extending upward from the bottom to a point above the line of the wind-box or blast-pipe, and oilpipes with discharge-nozzlesopening within said tuyeres, substantially as herein described.

In witness whereof I hereunto set my hand.

JOHN HENRY QANAVAN.

Witnesses FRED A. UPTON, CHRIS. VJ. MOREING.

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