US832292A - Ore roasting and oxidizing apparatus. - Google Patents

Description

PATENTED 001*. 2, 1906.

F. G. BUTTERPIELD. ORE ROASTING AND OXIDIZING APPARATUS.

APPLICATION FILED AUG. 24, 1905- 3 SHEETS-SHEET 1.

m m $2. ll L W a W N I r n No. 832,292. PATENTED DOT. 2, 1%6. F. J, BUTTER EIELD. ORE ROASTING AND OXIDIZING APPARATUS.

APPLICATION PILED AUG. 24, 1905.

3 SHEETS-SHBET 2.

N0. 832,292. PATENTED OCT. 2, 1906. F (L BUTTERFIELD. DRE RQASTING AND OXIDIZING APPARATUS.

AYPLIGATIOH FILED AUG. 24;, 1965.

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FESSEND iT-lfii igii 1 1% if ZDXlDiQfIiNG i Flfili'ifiih KQQJ. Specification cf'Letters Patent. Federated. Get. 2, 12906 Application {H 1 August 24, 1905 Seria No. IE-35,557,

To all; whom 21'' Huey cancer-7 Be itlrnewri that l, Fessrmosrr C. BUT- TERFIELD, citizen of the United States, residing Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Ore Roasting and ()Xidizing Apparatus, of which the fol lowing e specification;

My invention relates to on upper-ate which is designed for roasting, oxidizing, an

otherwise treiiting valuable ores with s View to rezu'lerijug the extraction of precious and oal'iernieiislmere readily died. I

l 6 consists in the GOITIbiHELEiOD of apparatus whereby heat is applied to roast the ore and the gaseous metallicproducts 'erising ill BTW from are afterward condensed.

1 it also comprises details of construction which will be more fully explained by ref erenoe, to the accompanying drawings, in Whi-eii--- ore 1 is per" i section and elevation showing the furnace and receiving end Fi shows the dust-chamber and eoi'idenser, 3 is e transverse n of the re ringder; ii is in aged end vievof one i the liningiiles.

1 carryingout my inventio" l employ a vy-revoluble cylinder, A, merino 3 .1 u on oeering Wheels or rollers 2 by means of surroui'idingrings or flanges 23, which rest ,II he llers, and any suitable gear or -eehenism through wliiieli power is llbtE-(l to slowly revolve the cylinder. rider is suitably constructed. preferan outer metal shel and en inner .ig of me br; l or file. The hearing or ring 3 is preferably" made in segments the shell, so as to be readily remov- '3 gear or c' euler ll and 'ougli ")OWGF. is trens'mi 35. to propel the sylmy be similarly constructed. The the oylinde'r are suitably ed "o; having central inlet. end (iisclisrge openirigs. These ends have openings made in. seem around the outer 'porti-zei, as at o. v

end these openings .e to feed and diseiiierge the ore re from "liiider. se openings are controlled by ites e be slidably or otherwise i. tied to be opened for the purpose of feeding or discharging and eloseole to make a tiglii casing tile roaming-chamber is ch e ed end in W are also we" in the observation of the interior of the roastingchem ber may be made iii. any time. A 3}, rometer is attached to the disclierge end, t .211; the working temperature may be ki'iowii t any and all times.

in order to conveniently apply lie-zit to the roastingrhamber, l have shown a combustion-chamber "i, which. may be of any suitable shape and mounted upon legs 8 with beering-wlieels 9, which are ad opted. to more i'upon a track, as at 10, so that the siiruciiire 7 may be broug it; close up i; the end of the roes'ting-- chamber or removed therefrom. The inlet end. of the roesting-chamber megs interior of the heating ap mmti s 7 larly lined with lire-tile, and the openings ii the two parts coincide when the structure '4 is moved up close against the end of the sleeve 1 1'1, so that there will be e suliiciem tight joint between the two [my eiteole form of iourtn er, preferably for the combustioii of oil, may be connected with the COI'UbUQ- tion-cln'miber '7 lxl'irougli en opening in the outerend, as shown et- In conneebioii with this heater 1 have ShOHn one or more air-admission pipes; as at "i 3. Such pipe or pipes open through the side oi the healer 7 and serve 10 admit any desire-fl quantity of air to pron-note more perfect combustion of the fuel and also to furnish sufficient oxygen for the purpose of rapidly oxidizing the ore in the X'OfiSLll1g-Qllz1D1bQIl Tile fiir-iiilnllsslOffl pipe is furnished. with an exterior gate 14, by Wliieh the proportion of air admitted can be comm-oiled. It will be seen. that by this con struetion the heater or combustionreharmber portion of the zipper-mus may be reedily movedbeek upon its tree-ks so as to leave a clear opening mm the interior of the roest- I big-chamber when required and moved back for use. Combustion thus proeeedsso for in v are discharged through the central end open-- ing of the roasting-chamber, which is opposite to the furnace, and pass out through a tubular passage 15, which connects with this head of the chamber. The dust-chamber 17 receives the fumes and gases which are discharged from the roasting-chamber, and this dust-chamber is constructed with alternate hanging walls from top and other walls or partitions arising from the bottom, leaving spaces alternately below and above these walls, so that the fumes will follow a sinuous course down and up, and the lower part of the chamber may thus receive and retain the dust. Beyond. the dust-chamber is a second chamber, into which the fumes and residue from the dust-chamber are drawn. This chamber has suitable passages through which the vapors are drawn by an exhaust-fan. Such gates and partitions are employed. in this connection as may be desired. to give the proper direction to the passing gases from the dust-chamber. The gases orfumes may pass into this second chamber, which has partitions and baffle-plates to form sinuous passages, and the outer side of the chamber is finally connected by a discharge-passage 1 8 with a suction-fan, which insures a draft sufficient to cause the ases to be properly passed through the furnace and chamber. Spraypipes 20 discharge water into this chamber to condense and arrest dust or gases which it is desirable to at this point.

After the ore is sufliciently roasted the peesages 5 5 at opposite ends of the roastingchamber may be opened and by continued revolution of the chamber the greater portion I of the ore will be discharged through these openings. After nearly the whole of the ore has been discharged it is possible to finish the discharge by means of rakes or hoes introduced from either end through these openings, and the furnace will thus be prepared for a new charge.

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

1. The combination with a revoluble oreroasting shell having means whereby ore may be admitted thereto, of a combustion-chan1- ber separate from the shell and movable toceases ward and from the inlet end thereof said chamber having an opening in one end for the admission of agaseous fluid and having an air-supply pipe fixed to and movable in unison wit it.

2. The combination with a revoluble orethereto, of a whee ed combustion-chamber separate from the shell and movable toward and from the inlet end threof'andadapted v to abut endwise against said inlet, said chamber having an opening in one end substantially in line with the inlet of the shell, an oilburner adapted to discharge its fluid fuel through said opening, and an air-su ply pipe fixed to the chamber and movable t erewith, and adapted to discharge thereinto.

3. The combination with a revoluble ore-' 6' roasting shell havin means for admitting ore ling said openings, means for revolving said 4 shell, settling and condensing chambers with which the central tube at the discharge end is connected, and a combustion-chamber movable to and from the inlet-tube of the shellto provide a fluid-fuel supply.

5. In a furnace, a horizontally-revoluble shell having heads with alined openings around the peripheries of the heads, for the admission of ore at one end, and the discharge of the solid residue at the opposite end, ies

slidably controlling said openings, reduced- ZOO tubular, centrally-disposed ends projecting from the heads, a combustion-chamber mov able to and from the inlet of the shell and provided with a fluid-fuel supply, and settling and condensing chambers with which the tubular extension at the opposite end of the furnace is connected to deliver the separated I m vapors and gases.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FESSENDEN G. BUTTERFIELD.

Witnesses:

HENRY P. TnIcoU, S. H. NOURSE.

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