SU1217482A1 - Cone-type aerator - Google Patents

Description

The invention relates to equipment for flotation concentration and can be used in the mining, metallurgical, chemical and other industries.

The purpose of the invention is to reduce energy consumption during pulp aeration by intensifying the bottom pulp circulation, dispersing the air and preventing clogging of the aerator by large fractions.

FIG. 1 shows a conical aerator; in fig. 2 is a view A of FIG. in fig. 3 - conical aerator, option.

The conical aerator includes a hollow shaft 1, a hollow truncated cone 2 mounted on it, and a disk 3 with hollow radial vanes 4 on which a ring 5 is mounted. On the outer surface of the truncated cone 2, protrusions 6 are made, and in the lower base an opening 7.

The radial blades 4 are connected by the internal cavities 8 through the channels 9 with the internal cavity of a truncated cone 2 and have slots 10 at the ends.

The conical aerator operates as follows.

The shaft I, and with it the aerator, is driven into rotation through a wedge drive from an electric motor (not shown). Through the hollow shaft 1 air enters. the cavity of the conical aerator and through the hole 7 and the blades 4 is introduced into the pulp. The air supplied through the opening 7 rushes up and disperses after

j

ten

The effect of turbulisagonal vortices in the wall layer created by the projections 6 on the outer surface of the truncated cone 2.

The formed pulp-air mixture is sucked into the cavity between the disk 3 and the aerator ring 5 and is ejected radially into the pulp volume.

Part of the air flow through the channels 9, blades 4 of the aerator and slits 10 blades goes into a highly turbulent area beyond the edges of the radial blades 4, where its effective dispersion takes place, ensuring intensive aeration of the pulp at relatively low speeds of rotation of the aerator.

The implementation of the circulating device in the form of a ring 5 connected to the radial blades 4 provides intensive mixing and aeration of the peak pulp fractions at relatively small peripheral rotational speeds of the aerator due to the formation of an upstream under the aerator.

In addition, if the circulation device is completed, it excludes 30 s from the possibility of large fractions in the aerator - pieces of fullerovka, a slit, leading to a decrease in the efficiency of pulp aeration.

The use for aeration - pulp of the proposed conical aerator makes it possible to achieve a significant reduction in energy costs while maintaining high final flotation rates.

20

25

35

id l

Fia.g

Fi.Z

Editor H, Volovik

Compiled by L. Antonova

Tehred T. Dubinchak Proofreader c. Tit

Order 1030/11 Circulation 515 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (2)

CONIC AERATOR, including a hollow shaft, a hollow truncated cone mounted on it with radial protrusions on the outer surface th (a hole in the lower base, a disk with c-radial vanes, a circulation device, characterized in that, in order to reduce energy consumption due to the intensification of pulp circulation, dispersing air and preventing clogging of the aerator with large fractions, the circulation device is made in the form of a ring connected to radial · blades of the aerator disk. 2. Aerator according to π. 1, about t and - characterized in that the blades are made hollow with slots at the peripheral ends and connected via channels to the internal cavity of the truncated cone. SU.,., 1217482 12 I 7482