US979820A

US979820A - Flotation-tank for ore-dressing.

Info

Publication number: US979820A
Application number: US55999910A
Authority: US
Inventors: Samuel K Behrend
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-05-07
Filing date: 1910-05-07
Publication date: 1910-12-27
Anticipated expiration: 1927-12-27

Description

I S. K. BEHREND. FLOTATION TANK FOR ORE DRESSING.

APPLICATION FILED MAY 7, 1910.

Patented DecI27, 1910. 7

s. KQBBHREND.

FLOTATION TANK FOE ORE DRESSING.

APPLICATION FILED MAY 7. 1910.

Patented Dec. 27, 1910.

,2 SHEETS-BEBEIQ.

UNITED STATES PATENT oFFrcE.

SAMUEL K. BEHBEND. OF NEW YORK. N. Y.

rLoTATIoN-TAN FOR ORE-DRESSING. I

To all whom it may concern:

Be it known that I, SAMUEL K. BEHREND, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented cer-- tain new and useful Improvements in Flotation-Tanks for Ore-Dressing, of which the following is a specification.

My invention relates to an improvement in flotation tanks for ore dressing, and the object is to provide means for thinning out rom one compartment of the tank to another.

My invention further consists-1n certain novel features of construction and com-binations of parts which will beinore fully described hereinafter, and pointed out in the claims.

In the accompanyingdrawings, Figure 1 is a longitudinal, vertical sectional view,

Fig. 2 is a top plan view, Fig. 3 is an enlarged sectional view of the feed hopper, and Fig. 4- is a view in front clevat ion of the vfeedhopper.

The

numerals

1, 1, indicate a plurality of tanks or compartments arranged adjacentlow the superficial stratum of the watcrj flowing through the tanks or compartments sothat the floatin particles on the vater have to travef over these plates in their passage throughthe machine, and preferably from one tank or compartment to another, thus thilnning the water int-o'a thin and creating a'very slight agitation in the water passing over the plates, thus causing a separation to take place from one Serial No. 559,999.

edge of a plate to the other, and the material adhering to and accumulating on the Specification of Letters Patent. Patented De 27, 191() Application filed May 7, 1910.

plates eventually working over and dropping to the bottom of the tank or compartment. There are as many of these tanks or compartments and plates as'th'e conditions of the ore in separation require, although'by far the largest portion of the-separation, of course, takes place in the first two or three tanks, the heavier and absorbent particles always descending to the bottom and finding vent throu h the outlet. pipes to a trough or launder 5, ielow, whereas the flaky floating material at the top passes through a launder 6,; and thence to a trough 7, whence it is taken care of for any future treatmentre-v quired. v

A feed hopper 15 at the top contains the ore.

This has a sliding gate S.for regu lating the size of opening, and a spreader 9 a at the bottom having a transverse curved rif, fle thereon, which distributes the ore prac tically across the entire area of the flotation tank below; and water is supplied from a tank (not shown),through a pipe lh and discharges through a nozzle 14 at the surface of the tank. The feed hopper is reciprocated by means of an eccentric on the shaft 18, it being provided with a pulley 17 driven by a belt 16. v Q

More or less slight changes might be resorted to in the form and arrangement of the several parts described, withoutdeparture' from the spirit and scope of my invention, and hence I do not. wish to be limited to the exact construction herein set forth,

l claim as new and desire to secure-by Letters Patent, is:

1. The combination with a flotation tank adapted to contain water, and means for ter and have ore fed upon the surface thereof, of plates extending horizontally over the dividing partitions betweenithe tanks, or compartments. slightly below the superficial stratum'of water over which athin film of water and the light floating particles pass,

and upon which the heavier and absorbent particles passing over the plates settle, due to the thinness of the film and the slight agitation caused in the films during their passage across the plates.

3. The combination with aplurality of flotation tanks, one of which flows into an other, of horizontally disposed plates located over the partitions between tanks and approximately coincident with the waterlevel, the edges of the plates extending well beyond the dividing partition, whereby the I particles caught on sald plates discharge into the tanks some distance beyond the dividing 15