SU1472132A1 - Flotation apparatus - Google Patents

Abstract

The invention relates to the separation of materials by flotation and allows for an increase in the extraction and content of floatable components in the froth product due to the intensification of the formation and separation of the gas-liquid mixture. Inside the air chamber (K) 1, which has a pipe (P) 2 of compressed air supply, is placed a perforated part 4 of a cylindrical flotation K 3. The latter has an axial P 8 bushing suspension inlet. Dividing the K has an axial P 6 removal of foam product and P 7 removal of the clarified liquid. In the direction of movement of the slurry, a swirler 9 is installed in front of the 4K 3 part. At the exit of part 4, in the course of the slurry movement, an additional swirler 10 is installed. Flotation K 3, after the additional swirler 10, is made perforated. The total area of the K 3 perforations decreases in the direction of movement of the slurry. The initial suspension containing the fodder yeast is fed through P 8 and is twisted by a swirler 9. Air is supplied through P 2 and the holes in part 4 K 3. The frothy product is separated in the centrifugal field from the clarified liquid and removed through P 6. The clarified liquid collects in the lower part of K 5 and is discharged through P 7. The uniform output of the clarified liquid and the aeration of the clarified suspension ensure high efficiency of formation and separation of the gas-liquid mixture, increasing extraction of fodder yeast. 3 hp ff, 1 ill.

Description

t ±

$ fi

(L

mr

g

/

{four

4 EC

CO ND

-g

,

1472

fluid. In the direction of movement of the slurry, before the part А К 3, a swirler 9 is installed. On the descent of part A, in the course of the slurry movement, an additional quill device 10 is installed. Flotation K 3, after the additional swirler 10, is made perforated. The total area of the K 3 perforations decreases in the direction of movement of the slurry. The initial suspension containing feed yeast is fed through P 8 and twisted by a swirler 9. Through P 2 and from

The invention relates to the separation of materials by flotation and can be used in the microbiological and food industry for the separation of biosuspensions.

The purpose of the invention is to increase the extraction and content in the froth product of the - floated components due to the intensification of the formation and separation of the gas-liquid mixture,

The drawing schematically shows a flotation device.

The flotation apparatus includes an air chamber 1 with a nozzle 2 for compressed air supply, a flotation chamber 3 for a cylindrical mold, section 4 of which is perforated, a separating chamber 5 with an axial nozzle 6 for removal, a froth product and a nozzle 7 for removing the clarified liquid, a nozzle 8 for supplying a clarified slurry, mounted coaxially with the flotation chamber 3, and a swirler 9 installed at the entrance to the perforated portion 4 of the flotation chamber 3, the separation chamber 5 is made covering the outlet to A flotation cell 3. To further improve the flotation apparatus, an additional swirler 10 is installed on the perforated section 4 of the flotation chamber 3, the total perforation area of the flotation cell 3 decreases in the direction of movement of the clarified suspension, and the flotation chamber 3 perforated along the entire length.

32

Versions in part 4 of K 3 air is supplied. The frothy product is separated in the centrifugal field from the clarified liquid and removed through P 6. The clarified liquid collects in the lower part of K 5 and is discharged through P 7. The uniform output of the clarified liquid and the aeration of the clarified suspension provide high efficiency in the formation and separation of the gas-liquid mixture. -. higher extraction of fodder yeast. 3 hp f-ly, 1 ill.

Flotation apparatus operates as follows.

The initial suspension, containing 7–10 g / l of fodder yeast, is fed through nozzle 8. As the clarified suspension passes through the swirler 9, the tangential velocity of the suspension increases significantly.

Compressed air at a pressure of 0.13-0.16 MPa is supplied through the pipe 2 into the air chamber 1 and from there through the holes in the perforated area 4 to the inside of the flotation chamber 3. Due to the centrifugal forces, the air is mixed with the clarified suspension and moved air bubbles from the fleet of yarns with yeast cells to the axis of rotation - suspensions. The final separation of the gas-liquid mixture takes place in chamber 5. A foam product containing 25-30 g / l of yeast is removed from the apparatus through the nozzle 6, and the clarified liquid containing 0.02-0.05 g / l of yeast is collected at the bottom of chamber 5 and discharged through the nozzle 7.

The supply of the flotation apparatus with a swirler 9 installed at the entrance to the perforated area 4 of the flotation chamber 3, and the axial arrangement of the nozzle 8 for supplying the clarified suspension provide intensive formation and subsequent separation of the gas-liquid mixture in the centrifugal field. The implementation of the separation chamber 5 covering the output end of the flotation chamber 3

314

provides an increase in the efficiency of separation of the isolated product from the clarified liquid. The supply of the apparatus with an additional swirler 10 ensures the maintenance of a high axial velocity of motion of the clarified suspension, preventing the mixing of the isolated products of the fleet. of

A decrease in the total perforation area of the flotation chamber 3 in the direction of movement of the clarified slurry provides uniform aeration of the clarified slurry, compensating for the increase in pressure difference at the beginning and end of the flotation chamber 3, due to the hydrostatic pressure of the slurry column and the decay of the slurry flow rate.

The implementation of the flotation chamber 3, perforated along the entire length, allows to improve the separation of the froth product and the clarified liquid due to the partial removal of the clarified suspension through perforations,

. Thus, during the operation of the flotation unit, an increase in the efficiency of formation and subsequent separation of the gas-liquid mixture is achieved, which ultimately improves the extraction of the floatable components and their content in the froth product. .

Claims (1)

Invention Formula 1, Flotation apparatus, including an air chamber with a branch pipe of 10 Q compressed air, a cylindrical flotation cell, a part of which is located inside the air chamber and is perforated, a supply pipe for the clarified suspension and a separation chamber with an axial pipe for discharging the froth product and a pipe for discharging the clarified liquid, in order to increase the extraction and content of foam product flotation components due to the intensification of the formation and separation of the gas-liquid mixture, it is equipped with a swirler installed in front of the perforated part of the fleet translational movement of the camera along the suspension, the separating chamber is encompassing the output end of the flotation chamber, the input pipe emoy clarified slurry mounted coaxially flotation cell, 2, the apparatus according to claim 1, characterized in that it is provided with an additional swirler mounted behind the perforated part of the flotation cell in the course of the suspension, 3, a noni device 1, characterized in that the perforation area t of the flotation cell decreases in the direction of movement of the clarified suspension. 0 five D. The apparatus according to claim 1, wherein the flotation cell, with the additional swirler, is perforated in the course of the slurry movement.