SU848066A1

SU848066A1 - Flotation machine impeller

Info

Publication number: SU848066A1
Application number: SU792841581A
Authority: SU
Inventors: Леонид Петрович Зарогатский; Генрих Александрович Денисов; Виталий Иванович Поляков; Владислав Моисеевич Тивин; Александр Федорович Чунин
Original assignee: Джезказганский Ордена Ленина Горнометал-Лургический Комбинат Им. K.И.Сатпаева
Priority date: 1979-11-21
Filing date: 1979-11-21
Publication date: 1981-07-23

Description

Изобретение относится к устройствам для извлечения полезных компонентов из различных руд методом флотации, а именно к импеллерным блокам фпотомашин, и может быть использовано в горно-металлургической промышленности для обогащения руд цветных металлов.The invention relates to a device for extracting useful components from various ores by flotation, and in particular to impeller units of photomotors, and can be used in the mining and metallurgical industry for the enrichment of non-ferrous metals.

Известна флотомашина, включающая камеру с размещенным в ней блоком импеллера, аэратор которого выполнен в виде перфорированного диска, к от— верстиям последнего трубками подведен сжатый воздух. Блок импеллера снабжен вибрационным приводом, сообщающим · аэратору возвратно-поступательные перемещения в вертикальной плоскости. Высокая частота колебаний аэратора способствует хорошей диспергации воздуха D3.A flotation machine is known, including a chamber with an impeller block placed in it, the aerator of which is made in the form of a perforated disk, compressed air is supplied to the holes of the latter. The impeller unit is equipped with a vibratory drive that informs the aerator of the reciprocating movement in a vertical plane. The high oscillator frequency of the aerator contributes to the good dispersion of D3 air.

Однако из-за невозможности созда- ₂ния больших амплитуд производительность камеры остается низкой.However, due to the impossibility of ₂ The creation Niya large amplitudes camera performance remains low.

Известен также импеллер флотационной машины, включающий ротор с наклон2 ным диском и статор, в крышках которого выполнены отверстия. Наклонный диск ротора при вращении оказывает на засасываемую пульпу вибрационное воздействие, что приводит к хорошему перемешиванию пульпы с воздухом. Циркуляция пульпы через отверстия в ста* торе способствует диспергации воздуха. Производительность флотационной камеры, оборудованной таким импеллером, в 1,5 раза выше, чем в обычных механических флотомашинах £2^|.A flotation machine impeller is also known, which includes a rotor with an inclined disk and a stator, in the covers of which holes are made. During rotation, the inclined disk of the rotor exerts a vibrational effect on the suction pulp, which leads to good mixing of the pulp with air. Pulp circulation through openings in the stator facilitates air dispersion. The productivity of a flotation chamber equipped with such an impeller is 1.5 times higher than in conventional mechanical flotation machines £ 2 ^ |.

Недостатком устройства является то, что диспергация воздуха осуществляется мало эффективно.The disadvantage of this device is that air dispersion is not very effective.

Цель изобретения - повышение извлечения ценного компонента за счет интенсификации диспергации воздуха.The purpose of the invention is to increase the extraction of a valuable component due to the intensification of air dispersion.

Поставленная цель достигается тем, что к крышкам статора с внешней стороны прикреплены эластичные кольцаThis goal is achieved by the fact that elastic rings are attached to the stator covers from the outside

Е отверстиями, не совпадающими с отерстиями крышек, при этом крынки статора выполнены сужающимися к центру диска.E holes that do not coincide with the holes of the covers, while the stator wings are made tapering to the center of the disk.

На фиг. 1 изображен предлагаемый импеллер, конструктивная схема; на фиг. 2 - вид А на фиг. 1.In FIG. 1 shows the proposed impeller, structural diagram; in FIG. 2 is a view A in FIG. 1.

Импеллер включает закрепленный на валу 1 дисковый ротор 2,снабженный радиальными лопастями 3 и установленный наклонно к оси вала 1 Диск ротора 2 имеет коническое сечение. Образующие нижней и верхней поверхностей диска имеют общую вершину в его центре, Лежащую на оси вала 1.The impeller includes a disk rotor 2 mounted on the shaft 1, provided with radial blades 3 and mounted obliquely to the axis of the shaft 1. The rotor disk 2 has a conical section. The generators of the lower and upper surfaces of the disk have a common vertex in its center, lying on the axis of the shaft 1.

Ротор 2 размещен внутри камеры статора, состоящего из кольцевых перфорированных крышек 4 и 5, скрепленных обечайкой 6.The rotor 2 is placed inside the stator chamber, consisting of annular perforated covers 4 and 5, fastened by a shell 6.

Крышки 4 и 5 покрыты снаружи эластичными перфорированными кольцами 7, прикрепленными к кромкам крышек. Отверстия колец 7 и крышек;; 4 и 5 не совпадают. Внутренняя поверхность крышек 4 и 5 выполнена конической, образующие этих, поверхностей имеют вершину в центре диска ротора 2. Воздух подается сквозь вал 1 на верхнюю и нижнюю поверхности ротора 2. Статор прикреплен к корпусу блока импеллера и имеет направляющие воронки 9 и 10.Covers 4 and 5 are coated externally with elastic perforated rings 7 attached to the edges of the covers. Holes of rings 7 and covers ;; 4 and 5 do not match. The inner surface of the covers 4 and 5 is conical, the generators of these surfaces have a vertex in the center of the rotor disk 2. Air is supplied through the shaft 1 to the upper and lower surfaces of the rotor 2. The stator is attached to the casing of the impeller unit and has guide funnels 9 and 10.

Устройство работает следующим образом.The device operates as follows.

При вращении ротора 2 пульпа засасывается через направляющие воронки и 10 внутрь статора, куда поступает вместе с пульпой и воздух. Внутри статора воздух частично перемешивается с пульпой и образованная смесь . выбрасывается вращающимся и качающимся ротором 2 в камеру сквозь перфорации крышек 4 и 5 и эластичных колец 7. В момент прохождения сквозь перфорации воздух в пульпе дробится на мелкие пузырьки за счет резкого изменения направления и скорости потоков.When the rotor 2 rotates, the pulp is sucked in through the guiding funnels and 10 into the stator, where air enters along with the pulp. Inside the stator, the air is partially mixed with the pulp and the mixture formed. it is ejected by a rotating and swinging rotor 2 into the chamber through the perforations of the covers 4 and 5 and elastic rings 7. At the moment of passage through the perforations, the air in the pulp is crushed into small bubbles due to a sharp change in the direction and speed of the flows.

Эластичные кольца выполняют роль лепестковых клапанов, поверхности которых.получают волнообразные круговые перемещения синхронно с вращением ротора 2. Местный отрыв эластичных коАц 7 от крышек 4 и 5 возникает в момент сближения поверхностей ротора 2 и крышек. В момент расхождения этих поверхностей эластичные кольца 7 разряжением прижимаются к крышкам, перекрывая их отверстия. Поскольку образующие конических поверхностей крышек и диска имеют общую вершину в центре диска, это позволяет обеспечить максимальное сближение упомянутых поверхностей до образования минимального зазора между ними (цо 1 мм) .The elastic rings act as flap valves, the surfaces of which receive wave-like circular movements synchronously with the rotation of the rotor 2. Local separation of the elastic rings 7 from the covers 4 and 5 occurs at the moment of convergence of the surfaces of the rotor 2 and the covers. At the moment of divergence of these surfaces, the elastic rings 7 are pressed against the caps by discharge, blocking their openings. Since the generatrices of the conical surfaces of the covers and the disc have a common vertex in the center of the disc, this allows for a maximum approximation of the mentioned surfaces until a minimum clearance between them is formed (about 1 mm).

Пульпа, насыщенная мелкими пузырькам!-., равномерно распределяется по камере главным образом за счет нисходящего потока.The pulp, saturated with small bubbles! -., Is evenly distributed throughout the chamber mainly due to the downward flow.

Пузырьки воздуха с закрепившимися на них частицами полезного компонента всплывают в виде пены и удаляются с поверхности зеркала пульпы пеногоном. Тонкая диспергация воздуха позволяет увеличить площадь флотации в камере.Air bubbles with particles of a useful component fixed on them float in the form of foam and are removed from the surface of the pulp mirror by a foam rubber. Thin dispersion of air allows you to increase the flotation area in the chamber.

Claims

The invention relates to devices for extracting useful components from various ores by flotation, namely to impeller blocks of flotation machines, and can be used in the mining and metallurgical industry for the enrichment of nonferrous metal ores. A flotation machine is known, which includes a chamber with an impeller unit located therein, the aerator of which is made in the form of a perforated disk, and compressed air is led to the openings of the latter by tubes. The impeller unit is equipped with a vibration drive, which informs the aerator about reciprocating movements in the vertical plane. The high oscillation frequency of the aerator contributes to good air dispersion. 03 However, due to the impossibility of creating large amplitudes, the performance of the chamber remains low. Also known is the impeller of the flotation machine, which includes a rotor with an inclined disk and a stator, in the lids of which holes are made. When rotated, the rotor disk tilts, upon rotation, a vibration impact on the pulp sucked in, which leads to good mixing of the pulp with air. The circulation of pulp through the holes in the etotor contributes to the dispersion of air. The performance of a flotation cell equipped with such a yutsler is 1.5 times higher than that of mechanical flotation machines. The disadvantage of the device is that air dispersion is not very effective. The purpose of the invention is to increase the extraction of a valuable component due to the intensification of air dispersion. This goal is achieved by the fact that elastic rings with openings that do not coincide with the openings of the covers are attached to the covers of the stator, while the covers of the stator are made tapering to the center of the disc. FIG. 1 shows the proposed impeller, constructive scheme; in fig. 2 is a view A of FIG. i. The impeller includes a disk rotor 2 fixed on the shaft 1, fitted with radial blades 3 and mounted obliquely to the shaft axis 1. The rotor disk 2 has a conic section. Forming the lower and upper surfaces of the disk have a common vertex in its center. The rotor 2 is located inside the stator chamber, consisting of annular perforated lids 4 and 5, fastened with a shell 6. Kryshki 4 and 5 are covered on the outside with perforated elastic rings 7 attached to the edges of the grinder. Hole rings 7 and krpepek. 4 and 5 do not match. The inner surface of the caps 4 and 5 is made conical, forming these surfaces have a top in the center of the rotor disk 2, the air is supplied through the shaft 1 to the upper and lower surfaces of the rotor

2. The stator is attached to the casing of the block 8 of the impeller and has guide funnels 9 and 10. The device operates as follows. As the rotor 2 rotates, the slurry is inhaled through the guide funnels 9 and 10 inside the stator, where it comes along with the pulp and air. Inside the stator, the air is partially mixed with pulp and the resulting mixture is ejected by the rotating and swinging rotor 2 into the chamber through the perforations of the caps 4 and 5 and elastic rings 7. At the moment of passage through the perforations, the air in the pulp is crushed into small bubbles due to an abrupt change in direction and speed Streams, elastic rings perform the role of lobe valves, the surfaces of which receive wavy circular movements synchronously with the rotation of the rotor 2. Local separation of elastic Kotitz 7 from Kryshtek 4 and 5 occurs in the moment of approach of the surfaces of the rotor 2 and the lids. At the time of the divergence of these surfaces, the elastic rings 7 are pressed by vacuum to the covers, blocking their openings. Since the generators of the conical surfaces Krsch and the disc have a common top in the center of the disc, this allows for maximum convergence of the said surfaces to the formation of a minimum gap between them (1 mm), the pulp, saturated with small bubbles, is evenly distributed throughout the chamber downstream account. Air bubbles with particles of the useful component fixed on them emerge as foam and are removed from the surface of the pulp mirror with foam. The fine dispersion of air allows an increase in the flotation area in the chamber. The invention The impeller of the flotation machine, including a rotor with an inclined disk, and a stator, in the caps of which there are holes, characterized in that, in order to increase the extraction of the valuable component due to the intensification of air dispersion: a, elastic rings with an outer side are attached to the caps of the stator openings that do not coincide with the holes of the roof, while the roof of the stator is made tapering to the center of the disk. Sources of information taken into account in the examination 1. Meshkov N, F, Flotation machines, M, Nedra, 1972, p. 155, 2, Ibid, p, 69 (prototype).