US295646A - Reverberatory ore-furnace - Google Patents

Description

(No Model.) 2 Sheets-Sheet- 1. G. W. JONES.

. REVERBBRATORY ORE FURNACE. N0."295,646. Patented M r. 2 5

2 Sheets-Sheet 2.

W. JONES.- REVERBERATORYQRE FURNACE.

(No Model.)

No. 295,646; Patented Mar.- Z5,1884.'

wiuh most advantageous manner.

, connected with the chamber or chambers 'atory furnaces for desulphurizing, chloridiz- UNITE STATES PATENT Fries.

GEORGE IV. JONES, OF SILVER GREEK, ASSIGNOR 'lO ADAMS 8t CARTER, OF

i SAN FRANCISCO, CALIFORNIA.

REVERBERATORY ORE-FURNACE.

SPECIFICATION forming part of Letters Patent No. 295,646, dated March 25, 1884..

Application filmlsoptember 7, 1883. (No model.)

To all whom it may concern:

Be it known that I, GEORGE WV. JONES, of SilverCreek, Alpine county, and State of California, have invented an Improvement in Reverberatory Ore-Furnaces; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to a class of reverbering, and chlorinating ores, and to certain new and useful improvements therein, the object of which is to thoroughly work the ore in the These improvements consist in such an arrangement of hearths that the ore may be roasted in a chamber, from which the fumes of the chlorine are excluded, but which is so wherein the chloridation or chlorination is effected that charges of ore may be withdrawn from itinto said chambers. Further, in thearrangement of a number of furnaces to provide for a track upon the top to facilitate the charging of the whole with ore; in the arrangement of the various hearths and their doors to permit the simultaneous and independent manipulation of the ore within all the hearths; in a peculiar dust-chamber, and in minor details of construction, all of which I shall hereinafter fully explain.

Referring to the accompanying drawings, Figure l is a front elevation of my furnace. Fig. 2 is a vertical transverse section of same. Fig. 3 is a vertical section of the arch D, stack D, and dust-chamber I. Fig. 4 is a vertical longitudinal section of my furnace. Fig. 5 is a horizontal longitudinal section through the lower hearth, a.

A isthe brick-work forming the shell of the furnace or furnaces, of which I have here shown four built together as one. A description of the interior of one will answer for all.

*A'lower hearth, a, is made, a central hearth, a, and atop hearth, b, Fig. 4. These are made by brick diaphragms, and it will be ob served that the one, B, separating the hearths a and a is very wide. The hearths a a are connected at their ends opposite the fire-chamber by a passage, 0.

0 is the fire box or chamber for the lower l the lower hearths,

two hearths, and O is a separate fire-box for the upper hearth, b. The escape-flue d for the hearth a extends upward past the end of hearth b, but is entirely separate therefrom, being inclosed, whereby none of the escaping products will find their way into hearthb.

. The escape-flue for hearth bis (1 at its farther end. These escape flues extend upwardly, and are inclosed in the arch D, Figs. 1, 2, 3, from which a common stack or stacks, D, open out, Fig. 3. In the floor of each of the hearths are the traps e, for letting the charge down into and through each hearth, and finally onto the floor beneath.

Through the top of the furnace aremade apertures, in which are hoppers E, for feeding the ore. I may explain the advantage of this construction as follows:

Ores designed for treatment in this furnace are those containing sulphur. It is necessary to roast the ore in order to drive off the sul- I phur, that the chlorine may have better effect; but I have found that such a high degree of heat is required for the process of desulphur izing that when the chlorine is put in it has a tendency to volatilize the precious metals, and thus a great loss is suffered; but in my furnace the chlorine which is introduced only in and which acts upon the ore in the lower hearths alone, is excluded from the ore undergoing desulphurization in the upper hearth, in which nothing but the roasting goes on. When that is complete, the charge of ore is let down through the traps into the hearth a, and thence into hearth a, in both of which it is subjected to the chlorine, being then in a condition free of sulphur.

The ,separate fire-boxesprovide for the requisite heat in each hearth, though the hearths may be so arranged as to be heated from a single fire-box.

It will be observed that each furnace is so built with respect to the adjoining ones that the fire-boxes lie close together for convenience in working. I may have as many furnaces as I desire.

Upon top of the furnace throughout its extent is a track, f, upon which small ore-cars are adapted to run, bearing their loads to each feed-hopper, Fig. 2. The workmen are protected when running the car by the arch D,

Y which carries the escaping gases above them. vF are the doors of the lower hearths, (4, Figs.

1, 2. ll" are the doors of the hearth a, Fig. 2. These are located on the side of the furnace opposite to doors F. G are the doors of hearth b, and are upon the same side as doors 1?, Figs. 1, 2. The workmen who operate through doors F stand on the ground. Those operating through doors G stand on a platform, H, over the lower workmen. Those working through doors F stand on the opposite side of the furnace on a platform or raised ground. By locating doors F and F on opposite sides interference of the workmen is avoided, and by making the partition B wide, as I have shown, the doors G are raised high enough to permit the construction of the platform H sufiieiently high to allow men to work over each other on the same side of the furnace.

The brick-work forming arch D is carried up straight on its outer sides, and above the arch the inner walls of the escape-fines are also extended, and are straight, as shown in Fig. 8, whereby a dust-chamber, I, is formed. Where the two branches of the escape-fines unite in the common stack D the outer walls are curved downwardly and inwardly to form a dead-air space in the dust-ehamber. The

heavy particles settle down in the chamber, and are removed through door '6 while the gases pass off through the stack.

Having thus described 1n yinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a desulphurizing, chloridizing, and

chlorinating furnace, the connected hearths a a, having the escape-flue (Z, and the fire-box G, in combination with the hearth I), having escape-flue d, and fire-box O, and the traps c, connecting it with hearth a, substantially as herein described.

2. In a desulphurizing, chloridizing, and ehlorinating furnace, two or more furnaces built in one connected line, and having an arch, D, in which the escape-fines are contained, and top openings with feed-hoppers E, in combination with the track f on top of said furnaces and inclosed by the arch, substantially as andfor the purpose herein described.

3. In a desulphurizing, chloridizing, and chlorinating furnace, the connected hearths a a, having escape-fine (Z, and the top hearth, I), having the escape-flue d, and the feed-hoppers E on top of the furnace, in combination with the arch D, inclosing the escape-fines, the stack D, and the track f on top of the furnace, substantially as and for the purpose herein described.

4-. In a desulphurizing, chloridizing, and ehlorinating furnace, the arch D, and the escape-flues (Z d from the furnace, in combination with the dust-chamber I, formed above said areh and the smoke-stack D, substantially as herein described.

In witness whereof I have hereunto set my hand.

GEORGE XV. JONES.

IVitnesses:

FRED. J. BAILEY, EDwD. H. J oNns.

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