SU933120A1

SU933120A1 - Apparatus for aeration of flotation pump

Info

Publication number: SU933120A1
Application number: SU803004557A
Authority: SU
Inventors: Миша Татевосович Овсепян; Ваник Арашакович Торосян
Original assignee: Научно-Исследовательский И Проектный Институт Цветной Металлургии Министерства Цветной Металлургии Ссср
Priority date: 1980-09-17
Filing date: 1980-09-17
Publication date: 1982-06-07

Description

II

Изобретение относитс к области обогащени полезных ископаемых, а именно к устройствам дл насыщени пульпы воздухом и тонкого диспергировани его, и может быть использовано в гидрометаллургических и химических аппаратах, где необходимо насыщение растворов и жидкостей пузырьками воздуха.The invention relates to the field of mineral processing, namely, devices for saturating the pulp with air and fine dispersing it, and can be used in hydrometallurgical and chemical apparatuses where saturation of solutions and liquids with air bubbles is necessary.

Известно устройство дл аэрации флотационной пульпы, состо щее из жестко закрепленных на полом валу дисков, между которыми расположены лопасти, в которых выполнены каналы, сообщенные с полостью вала, а каналы , образованные смежными лопаст ми, сообщены с впускным отверстием в надимпеллерном диске 1.A device for aerating flotation pulp is known, consisting of disks rigidly fixed on a hollow shaft, between which blades are placed, in which channels communicated with the cavity of the shaft are made, and channels formed by adjacent blades are communicated with an inlet opening in the suprappeller disk 1.

Недостатками известного устройства вл ютс сложность конструкции и низка эффективность про.цесса аэрации в грубодисперсных и т желых пульпах.The disadvantages of the known device are the complexity of the design and the low efficiency of the aeration process in coarse and heavy pulps.

Известно устройство дл аэрации флотационной пульпы, включающее два диска разных диаметров с отверсти ми и рабочими элементами, жестко закрепленных на полом валу с отверсти ми, расположенными в междисковом пространстве Г23.A device for aerating flotation pulp is known, comprising two disks of different diameters with holes and working elements rigidly mounted on a hollow shaft with holes located in the interdisc space G23.

Недостатком такого устройства вл етс низка эффективность аэрации The disadvantage of this device is the low efficiency of aeration.

to пульпы и большие энергетические затраты.to pulp and high energy costs.

Цель изобретени - повышение эф ,j фективности аэрации пульпы и снижение энергетических затрат.The purpose of the invention is to increase the efficiency, efficiency of pulp aeration and reduce energy costs.

Claims

The goal is achieved by the fact that the working elements are made in the form of curved blades of a front height, fixed on facing surfaces of the disks, while the height of the blades increases from the center to the periphery of the disks. 3 In FIG. 1 shows the proposed device, a vertical section; in fig. 2 - the same, top view. A pulp aeration device consists of a hollow shaft 1 and two disks 2 and 3 of different diameters, which are horizontally fixed to the shaft 1, in the central part of which there is an opening t for air to flow from the hollow shaft 1 to the interdisk space. The lower surface of the upper disk 2 and both surfaces of the lower disk 3 are equipped with curved blades curved backward during the rotation. The height of the blades 5 and 6 of the opposing surfaces of the disks 2 and 3 towards the periphery increases, and the height of the blades 7 of the lower surface of the disk 3 from the center to the periphery decreases. Both disks are provided with 8 ti 9 through holes for the circulation of deaerated pulp. The device works as follows. The aeration device is installed in the chamber of the flotation machine. When the device rotates, the air through the hollow shaft 1 and the hole enters the interdisk space, rfte is mixed with the pulp circulation flows through the holes 8 and 9 of the disks 2 and 3. The pulp-air mixture, mixing in the interdisk space, moves towards the periphery to a zone of higher dilution and, due to intersection of the flows, is dispersed. Mineralized air bubbles rise to the surface of the foam layer, and deaerated pulp through openings 8 and 9 return to the interdisk space in the rarefaction zone. The blades 7 prevent the deposition and accumulation of coarse sands in the subpipeller space and keep them suspended in the volume of the chamber. In case of a forced or abnormal stopping of the flotation sediment of the sand layer near the lower disk, the 04 becomes small and loose, as it is under the overlap of the larger disk 2 and the hydrostatic pressure of the pulp does not affect the compaction of the sediment layer. In addition, curved blades are more streamlined and can be easily rotated through the drive shaft 1. The use of the present invention provides intensive pulp mixing, air leaks and dispersion, which is caused by high dilution in the peripheral and interdisk space, where the pulp and air flows repeatedly intersect. The device is easy to manufacture and relatively non-metal-intensive. It can be made of plastic, vlyryna, rubber on a metal frame, etc. Flotation machines equipped with the proposed aeration device can also be used in schemes with return operations, while the suction pipe of the trench is supplied from the outside of the rarefaction zone. I. Invention A device for aerating flotation pulp, comprising two disks of different diameters with openings and working elements rigidly mounted on a hollow shaft with openings located in the interdisk space, so as to increase the efficiency of aeration pulp and reduce energy costs, work items are made in the form of curved blades of variable height, fixed on facing one another of the disk surfaces, while the height of the blades increases from center to periphery and disks. Sources of information taken into account in the examination 1.Patent of France No., cl. In 03 D 1 / 1i, published 1967.

2. Meshkerov N.F. Flotation machines. M., Nedra, 1972, p. 7b (prototype).

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