US1326125A - Process and apparatus por extracting- ores - Google Patents

Description

R. WALLNER.

PROCESS AND APAHATUS FOR EXTRACTING ORES.

l APPLICATION FILED OCT- 20| 19H. 1,326, 125, Patented Dec. 23, 1919.

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ROSA WALLNER, OF BIS'BEEJ ARIZONA. i

PROCESS AND AIPPARIJIIII'S` FOR VEX'IRACTING CRES.

Application led October 20, 1917.

To all whom t may concern:

v Be it known that I, ROSA WALLNER, a-

subject of the Emperor of Germany, residing at Bisbee, in the county of Cochise and State o-f Arizona, have invented certain new and useful Improvements in Processes and Apparatus for Extracting Ores; and I do herebyv declare the following' to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.V

This invention relates to apparatuses and processes for roasting ores preparatory to further treatment in the extraction of the metal content, and has for an object to provide a retort mechanism adapted to subject the ore therein to the required degree of heat while agitating the contained ores and subjecting such ores to a Vliow of fresh air through theV interstices of the ore mass within the retort, thus more rapidly and completely effecting the desired chemical change.

A further object of the invention is to provide a retort located within a furnace with means for rotating the retort while air is'forced alternately in opposite directions through the retort duringV such rotation and roasting process.

In the drawings,--

Figure 1 is a vertical sectional `view through the furnace, retort and air pump.

Fig. 2 is a horizontal vsectional view through the furnace and retort showing the pump in top plan.

Like characters of reference designate corresponding parts throughout the several views.

The present process may be carried out in apparatuses varying somewhat from the apparatus disclosed in the drawing, but must embody substantially a furnace 10 having means for supporting combustion as indicated at 11 with a flue 12 for' carrying off the products of combustion. A retort 13 is mounted to rotate in the furnace by being extended longitudinally through the furnace, the apertures in the furnace corresponding substantially with the size of the retort, permitting rotation. The retort is mounted upon hollow shafts 14 and 15 which are in turn journaled in bearings 16 and 17, respectively, pipes 18 and 19 oommunicating also with such bearings and Specicaton of Letters Patent.

Patented-Dee. 23, 1919.

serial no. 197,689.

forming non-rotatable extensions of the hollow shafts 14 and 15.

Conveniently located an' air pump 20 is employed having a piston 21 mounted therein operated from a crank 22 carried upon a shaft 23 driven in any approved manner as by the belt 24. Mounted also upon the shaft 23 is a pulley 25, a belt 21 being carried therefrom to a pulley 27 mounted upon the hollow shaft 14 so that the retort 13 is also-driven from the shaft 23.

From opposite ends of the pump 20 pipes 28 and 29 are carried communicating respectively with the pipes 18 and 19. rThe pump is provided with inlet valves 30 and 31 and check valves 32 and 33 are mounted in the pipes 28 and 29, respectively.

The pipes 18 and 19 at their ends opposite the shafts 14 and 15 `communicate respectively with boxes 34 and 35 which are cov eredwith a foraminous material 36. The retort 13 is provided with one or more doors 37 in one or both ends where the retort extends outwardly beyond the lines of the furnace 10. Also the furnace 10 is provided with rollers 38 upon which the extended ends of the retort bear and rotate.

In operation, the ore to be roasted is inserted into the retort through one or bot-h of the door openings 37 and commingled with charcoal or other fuel if found desirable to accomplish the purpose aimed at. The. combustion supported below the retort as shown particularly at Fig. 1, raises the temperature within the retort to such degree as to roast the ore and to ignite the fuel contained therein if fuel is commingled with the ore, as stated. Then the temperature of the ore mass has been raised to the desired temperature the pump 20 is started by the rotation of the shaft 23, also rotating the retort 13. The rotation of the retort agitates the ore mass contained therein to expose new and unefected ore surfaces to the action of the air passed through such retort by the action of the pump 20. rIhe air forced by the pump 20` through the pipe 28 upon the movement of the piston 21 in one direction passes into the pipe 18 and from such pipe branches one part of the air passing directly through the hollow shaft 14 and the retort, another part passing into the box 34. When the piston has reached the limit of its stroke the check valve 32 operates to prevent return of the air from the pipe 28, which has been passed through the retort, the shaft 15, and pipe 19 into the boX 35, carrying therewith dust and other impure matters. The foraminous covers of the boxes Bt and permit the escape slowly of the vitiated air While retaining the dust and the like Within the box.I The return stroke of the piston 21 produces the same effect in reversed order through the pipe 29 and shaft 15 into the box 34:.

I claim: l

r1. The process of roasting ores, consisting in introducing the ores into a rotating retort, maintaining heat upon the exterior of the retort, forcing fresh air alternately '1n opposite directions through the rotating retort and discharging the air vitiated by passing through the retort.

2. The process of roasting ores, consisting in introducing the ores into a rotating retort commingled with a combustible inaterial, maintaining heat upon the exterior of the retort sufiicient to raise the ore to the desired temperature and ignite the combustible material, forcing fresh air in opposite directions through the heated and ignited mass and discharging' the air vitiated by passing through the retort.

3. An apparatus for roasting ores comprising' a furnace, a rotating retort mounted in the furnace and having its ends extending' beyond the exterior lines of the furnace, an air pump cominunicatiing` by conduits with the axes of the rotating retort, said pump being provided with means to take in fresh air, and means to discharge the gases resultant upon forcing' air through the retort.

d. An apparatus for roasting ores comirn'ising a furnace, a cylindrical retort mounted Within and having its opposite ends eX- tending outwardly beyond the lines of the furnace, a charging door formed in one of the extended ends of the cylindrical retort, hollow pipes forming trunnions for the retort, an air pump conmiunicating by conduits with the hollow trunnions, said pump provided With means to take in fresh air, and means to discharge the gases resultant upon forcing` air through the retort.

ln an apparatus for roasting ores, a furnace,` a retort mounted movably Within the furnace, means to move the retort to agitate the contents, an air pump, conduits extending from the air pump into opposite sides of the retort, receptacles having foraminous portions communicating also With the conduits and means to discharge the gases resultant upon forcing air through the retort.

In testimony whereof l affix my signature.

ROSA WALLNER.

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