US 726948 A
Description (OCR text may contain errors)
o. 726,948. PATENTED MAY 5, 1903. G. LAND.
GEN TR-IPUG AL ORE SEPARATOR. APPLIOATION nun M11. 26, 1902. no MODEL. 2 SHEETS-SHEET 1.-..
rm: uomus PETER: co. vugro-umoq wnsmumonjii'g v No. 726,948. PATENTED MAY 5, 1903.
GENTRIFUGAL ORE SEPARATOR. APPLICATION FILED MAR. 26, 1902.
no MODEL. 2 sums-sum 2 Gordon/17am,
' UNITED STATES Patented May 5, 1903.
GORDON LAND, OF DENVER, COLORADO, ASSIGNOR TOO. H. P. BAXTER AND W. F. OAKES.
SPECIFICATION forming part of Letters Patent No. 726,948, dated May 5, 1903.
Application filed March 26 l 902.
To all whom it may concern:
Be it known that I, GORDON LAND, a citizen of the United States, residing at Denver, Colorado, have invented certain new and useful Improvements in Centrifugal Ore-Separators, of which the following is a specification.
My invention relates to improvements in centrifugal ore-separators.
The object of the invention is to provide a better means of separating the light or suspended matter from the heavy particles as they pass in transit mixed with water or other fluid from the operation of milling. or sluicing to the dump or waste. As is well known, the values passing away in the form of slimes is practically lost in the methods generally employed for metalliferous ore separation.
It is my purpose in devising the present improvements to seek to obtain only a single separation in the operation of my machine.
I have illustrated the invention in the accompanying drawings, in which Figure l is a central vertical section, and Fig. 2 a plan view'with partslbroken away.
In the drawings, A indicates a vertical stand-pipe, which is rigidly connected to and forms the axis of rotation of a rotary bowlB.
' The bowl is mounted upon an antifrictionbearing 0 and is driven by gears D, engaging a circular rack E on the bottom of the bowl, the gears being driven in any suitable manner. The pipe A forms the dischargepipe for the waste material, as hereinafter specified, and extends downward through the bearing, from which point the material discharged may be led to waste in any suitable manner. The upper end of the pipe A, as will be seen, is located slightlybelow the upper edge or rim of the bowl. This pipe or tube A is of suitable size to permit of the free passage of all of the water and slimes that are separated by centrifugal action during the rotating of the bowl. The heavy material is thrown outward by centrifugal force and is intercepted in its departure from the center by a vertical cylindrical wall E, preferably of steel, which is arranged pendent and held in place by suitable adj ustingrods F, which provide a means of raising the annular intercepting wall above the bottom of the revolving bowl a sufficient distance to Serial No. 100,074. (No model.)
allow the mass of moving particles (which,
driven by centrifugal force, have filled the space within this circular wall) to escape below the outer space of the larger rotating bowl, where by further and constant centrifugal action it is carried away into the circular trough G provided to receive it. As it is well known that the center of a liquid mass in circular motion is always depressed and the outer mass raised higher, I have placed my outlet-pipein the'center of action, so as to permit of the escape of the lighter material near the point of least motion. This aflords an almost perfect means of producing a single separation of thelighter material from the heavy, the latter being by centrifugal force carried away from the center and against the intercepting wall, from whence it finds, partly by gravity and partly by rotary force, an outlet below to thelarger area of the rotating bowl and finally intothe waste-trough. The separation produced-by this action does not contemplate the saving of any but the very light suspended matter and floating slimes. When it is desirable to save values found in the heavy material, other means should be employed to operate in conjunction therewith.
A circular depressed cone-shaped hood H is provided for the top of the outlet standpipe, which is attached thereto and is made to rotate with it and serves as a means of separating the pulp as it enters the rotating bowl from above. This is of service in scattering the mass and in freeing the contained slimes as they reach the surface, where further centrifugal action separates the heavy from the light. The slimes, &c., are fed through funnel I and pipe 1.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
1. In an ore-separator, a rotating bowl, a central supply-pipe for the ore to be separated, a centrally-arranged outlet-pipe for the valuable slimes depending through the bottom of said bowl, and an intercepting suspended cylindrical wall interposed between the central discharge and the outer bowl and serving as a means of deflecting the heavy material to its escape-outlet at the surface of the rotating bowl, substantially as described.
line with said outlet-pipe, substantially as 10 described.
In testimony whereof I affix my signature in presence of two witnesses.
HARRY E. BRIGGS, JAMES O. PARISH.