Pneumatic flotation machine
SUBSTANCE: pneumatic flotation machine of reactor-separator type comprises an aerator, a reactor, a separation chamber, a foam settler, a foam remover regulator, a splitting device and a device to output stems. Flotation machine is equipped with an external foam settler located between the separation chamber and the aerator to improve the gas content in the under foam zone, which is a shell with a porous inner surface.
EFFECT: reduction of the mechanical removal of particles of non-recoverable minerals with foam.
SUBSTANCE: invention relates to the field of mineral processing, namely to flotation pneumatic devices for processing mineral raw materials containing non-ferrous, ferrous, rare, precious metals and also nonmetallic minerals. The flotation pneumatic machine comprises a housing composed of expanded upper and lower parts, a central pipe located inside the expanded part of the housing, a foam tank, feeding devices in the form of aerators of the upper level of aeration and the aerators of the lower level in the lower part of the housing. Each aerator of the lower level is placed on a vertical guide fixed in the inner surface of the housing with the ability to move and fix the aerator to a predetermined depth of immersion. Opposite each aerator a hatch is made for its maintenance. The vertical guide of each aerator of the lower level is fixed on the inner surface of the access hatch.
EFFECT: increased recovery of a foam product during flotation of various kinds of raw materials.
3 cl, 1 dwg, 1 tbl
FIELD: process engineering.
SUBSTANCE: invention relates to dressing of minerals, particularly, to pneumatic flotation devices for processing of minerals containing nonferrous, ferrous, rare and noble metals as well as non-metallic minerals. This machine comprises the housing consisting of extended top and bottom parts composed of cylinders and interconnected by mid truncated cone-shaped section, central pipe arranged inside the housing extended part, feed, aerating and unloading appliances. Housing extended part top section and that of central pipe are composed of truncated cones diverged from bottom to top and fitted one in the other. Angle in inclination of cone every wall makes 10 to 30 degrees. Said inclined walls are arranged parallel with each other.
EFFECT: higher yield of useful component into foam product, higher efficiency of the machine.
3 cl, 1 dwg, 3 tbl
FIELD: process engineering.
SUBSTANCE: set of inventions relates to flotation performed using the air driven flotation machines and can be used for dressing of minerals with low or average content of valuable component. Proposed machine for flotation of particles from suspension to obtain foam product comprises housing with flotation chamber, at least one system of nozzles to feed gas and suspension in flotation chamber and at least one gassing system to feed extra gas to flotation chamber. Said gassing system is arranged inside flotation chamber and under said system of nozzles. At least one trammel of gassing system inside flotation system. Besides, it incorporates at least one measuring device to analyse formed foam product and/or suspension and at least one computer connected with said measuring device. At least one computer is configured to calculate and output adjustment variable in response to data from measuring device to vary the position of said gassing system by at least one said trammel.
EFFECT: higher efficiency of separation and yield of flotation product.
14 cl, 2 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to dispersion of suspensions. Device for dispersion of suspension (2) by at least one gas (7, 7a, 7b), particularly for flotation machine (100) comprises dispersing nozzle (10, 10'). The latter comprises the following components arranged one after another along suspension flow: suspension nozzle (3', 3", 3'") converging along the flow, mixing chamber (4) including said nozzle (3', 3", 3'"), mixing tube (5, 5') adjoining said mixing chamber (4) and converging along the flow, and at least one gas feed line (6, 6a, 6b) to feed at least one gas (7, 7a, 7b) into mixing chamber (4). Suspension nozzle (3", 3"') has at least N gas channels (31), larger than 3, connected with said gas feed line (6, 6a, 6b) to terminate at end side(3a", 3a'") of suspension nozzle (3", 3"') facing said mixing chamber (4). Device comprises A gas valves (V). Note here that N=A and everyone of N gas channels incorporates one gas control valve (V) to metre out gas (7a) fed to suspension (2) via appropriate gas channel (31).
EFFECT: better dispersion of suspension and gas.
19 cl, 20 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to dressing of minerals and can be used for concentration of sulphide tails. Flotation centrifuge consists of cylindrical mixing housing, pulp tangential feed pipe, air feed pipe and products discharge pipes. Mixing housing consists of two sections. One of the latter is composed of vortex chamber with guide vanes connected with separation cone. Concentrate discharge pipe is connected tangentially thereto. Said separation cone is furnished with light fraction foam discharge pipe arranged at top section of inner chamber. Inner cone of phase separation is arranged along the separation sector to displace there along.
EFFECT: efficient separation.
4 cl, 2 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to concentration of minerals and may be used for processing mineral bearing ferrous, nonferrous, rare and noble metals and for cleaning effluents of solids and oil products. Pneumatic flotation machine comprises central pipe, aerator, T-joints, reactor, separation chamber, bells, foam settler, foam flute and tails discharge device. Flotation machine is equipped with flow distributor for demixing of aerated pulp in two flows containing, preferably, mineralized bubbles and pulp. This flow distributor is shaped to ring composed of a straight truncated cone. Bells are arranged tangentially at identical or different height in symmetry about vertical axis. Flow distributor bottom edge is connected with separator chamber top edge while top edge of said bells are connected with appropriate bottom edges of reactor pipes which increases flotation rate and reduces loss of mineralised bubbles with tail (chamber) product.
EFFECT: higher quality of flotation.
3 cl, 1 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to concentration of minerals and may be used for processing mineral bearing ferrous, nonferrous, rare and noble metals and for cleaning effluents of solids and oil products. Proposed machine comprises aerator, tee, reactors, separation chamber, diffuser, foam settler, skimming regulator and tails discharge device. Machine is equipped with appliance for dividing homogeneous pulp flow into two jets containing, primarily, mineralised bubbles and pulp. It is composed of tube bent in circle with its top edge communicated with reactor and bottom edge connected with flat diffuser. Opposite edge of diffuser is secured at separation chamber to reduce loss of mineralised bubbles with tail (chamber) product.
EFFECT: higher yield of mineral particles.
8 cl, 1 dwg
FIELD: instrument making.
SUBSTANCE: invention relates to dressing of minerals, particularly, to processing by flotation. Proposed machine comprises housing including top cylindrical part accommodating concentric tubular aerators, air feed branch pipe, tangential feed branch pipe and that of conical bottom section, and concentrate discharge branch pipe. Besides, is incorporates special annular dampers made up of plates and arranged aligned with housing and projected relative to housing taper bottom inner surface, over housing height.
EFFECT: higher efficiency.
FIELD: mineral processing.
SUBSTANCE: invention refers to mineral processing, particularly to column flotation constructions which can be used in mineral material processing containing non-ferrous, ferrous, rare, noble and non-metal materials. Flotation machine includes body consisting of widened upper part and bottom part, central tube, located in the widened part of the body, foam collector, feeding, aerating and discharge devices. Foam collector is located concentrically in the upper widened part of body and made in the form of circular groove formed from the outside by the outer diameter of central tube and from other side - by the generator line of foam collector, outer diameter of which is defined according to the formula
Douter of foam.=k1·dinner of foam
Douter of foam - outer diameter of foam collector, m;
k1 - empirical coefficient to define the outer diameter of foam collector; from 1.30 to 1.50 depending on the type of material flotated;
dinner of foam - internal diameter of foam collector, m; defined according to the formula:
dinner of foam= dcentr.tube=dbottom body= k2·Q;
dcentr.tube - diameter of central tube, m;
dbottom body - diameter of the bottom body part, m;
Q - specified productivity of the machine on raw product, t/h;
k2 - empirical coefficient to define the outer diameter of foam collector, central pipe diameter and bottom body part diameter; from 0.005 to 0.008.
EFFECT: increase of flotation machine effectiveness.
2 cl, 1 dwg, 1 tbl
SUBSTANCE: invention refers to benefication of mineral deposits and can be used during processing of mineral raw material containing non-ferrous, ferrous, rare, precious metals, as well as non-metallic mineral deposits and particularly when cleaning waste water from solid particles and oil drops. Pneumatic flotation machine includes aerator, T-piece, reactors, separation chamber, foam sump, foam chute and unloading device for tails. Machine is equipped with conical distributor of aerated pulp flow, which is located coaxially to the separator and represents the apron in the form of flattened cone of the variable geometry and the top of which is directed downwards and into which on diametrically opposite sides there tangentially introduced are lower sections of reactors. In lower part of the chamber, under the flow distributor, there installed is reflecting plate providing the decrease of losses of small mineralised bubbles with tail (chamber) product.
EFFECT: enhanced flotation properties.
FIELD: mineral concentration, namely processes and apparatuses for treating by flotation method.
SUBSTANCE: process comprises steps of aerating air bubbles to lower part of housing in the form of truncated perforated cone with possibility of supplying aerated bubbles to flotation process; supplying initial pulp preliminarily treated by reagents directly on created by rotation concave surface of water; supplying additional water to lower part of housing for providing stable concave surface of water. Apparatus includes cylinder-cone housing whose lower part is in the form of perforated truncated cone with shell; branch pipes for feeding pulp and water; branch pipe for discharging tails out of top of cone in lower part of housing. Upper part of housing is open for freely discharging froth product by overflowing. Branch pipe for feeding initial pulp is mounted coaxially to housing; its lower cut is arranged in lower part of housing. Housing is coupled with rotation drive.
EFFECT: enhanced efficiency of trapping mineralized layer.
2 cl, 1 dwg
FIELD: separation of solid materials by means of floatation processes; devices for separation of finely dispersed minerals for extraction (concentration) of valuable components.
SUBSTANCE: proposed method includes saturation of mineral suspension with gas bubbles no less than 50 mcm in size by mixing this suspension with gas-and-water emulsion prepared beforehand by mechanical dispersion at content of gas from 66 to 70%, mineralization of gas bubbles at simultaneous mixing and motion in ascent and descent flows at separation of mineralized bubbles in form of floatation concentrate. Floatation machine includes aeration reactor connected with mineralized bubble separation chamber and gas-and-water emulsion generator. Aeration reactor is made in form of vertical tubes interconnected together and used for ascent and descent flow of mineral suspension mixed with gas-and-water emulsion; aeration reactor and gas-and-water emulsion generator are separated in space.
EFFECT: increased degree of extraction of valuable components; enhanced durability and reliability of machine.
4 cl, 1 dwg, 3 tbl, 22 ex
SUBSTANCE: machine comprises separation chamber and reactor made of at least one pipe whose top end is connected with the means for supplying pulp, and aerator. The bottom section of the pipe is set in the separation chamber and connected with the V-shaped tube through a bend. The exit section of the second bend is secured to the diffuser. The distributor of the flow of the aerated pulp underlies the second bend of the V-shaped tube and is made of an inclined plate. The top section of the separation chamber is provided with the foam settler which provided with the foam chute for collecting the enriched product. The bottom section of the separation chamber is connected with the arrangement for discharging tailings.
EFFECT: enhanced efficiency and reduced time of flotation.
9 cl, 1 dwg
FIELD: mechanical engineering.
SUBSTANCE: method comprises supplying air to the bulk of pulp with subsequent dispersing. The air bubbles are supplied through the openings in the chamber made under the level of pulp by setting the chamber or movable bottom of the chamber in vibration. The discharged pulp is fed back to the chamber with the use of pump or the openings provided with check valves. The number of bubbles supplied to the chamber is determined from formula N = nω/2π, where n is the number of openings in the chamber and ω is the angular frequency of vibration, in 1/s.
EFFECT: improved control of aeration.
FIELD: mining; mineral dressing by flotation-classification separation of the slime products.
SUBSTANCE: the invention is pertaining to the field of mining, in particular, to mineral dressing by flotation-classification separation of the slime products. The invention allows to exercise the three-product reprocessing of the minerals in the wide range of fineness and to reduce the quantity of the processing operations, to reduce metal consumption. The flotation-classification machine contains the vertical chamber with devices for collection of the froth product and the narrowing conical chamber with the bottom outlet adjoining to the first chamber from below, the aerator. The vertical chamber is partitioned by the septums into six. The septums are mounted so, that to ensure the pulp motion in respect to the movement of the gas bubbles in the mode "countercurrent - forward current - countercurrent". The pyramidal chamber is made in the form of the hydraulic classifier divided into three pyramidal settlers made with the angle of the walls inclination ensuring the discharge of the settled large-grained product. Between the outlet of the vertical chamber and the inlet of the conical chamber there is the horizontally fixed aerator consisting of the block-aerators connected by the pipeline and mounted under each section of the vertical chamber. At that the block-aerator consists of the frame with the fixed in it perforated pipes. The feeding pipeline is connected with the withdrawal discharge pipelines arranged in the extreme sections of the vertical chamber. In the upper part of the middle pyramidal settler there is the fixed pulp duct with the discharge pocket for removal of the flotation tailings.
EFFECT: the invention ensures performance of the three-product reprocessing of the minerals in the wide range of fineness, reduction of the number of the processing operations and metal consumption.
FIELD: mineral concentration, possibly processing of mineral raw materials containing non-ferrous, ferrous, rare, noble metals, non-metallic minerals.
SUBSTANCE: machine includes cylindrical housing having enlarged upper part and lower part; feeding, aerating and discharging attachments in the form of ejectors; froth collector. Diameter of enlarged part of housing is determined from given expression where D - diameter of upper enlarged part of cylindrical housing, m; k1 - empiric coefficient for determining diameter of upper enlarged part of cylindrical housing selected in range 1 - 1.4; h1 = ( k2 x h2) - height of upper enlarged part of cylindrical housing, m; k2 - empiric coefficient for determining diameter of upper enlarged part of cylindrical housing, selected in range 0.2 - 1.0;h2 -height of lower part of cylindrical housing, m; d -diameter of lower part of cylindrical housing, m, depending upon target efficiency of machine by initial product according to relation d2 = k3 x Q; Q - target efficiency of machine by initial product, t/h; k3 - empiric coefficient for determining diameter of lower part of cylindrical housing, selected in range 0.015 -0.03. Froth collector is in the form of double-slope chute and it has branch pipes arranged mutually opposite and used for removing froth product.
EFFECT: improved efficiency by froth product due to increased area of upper enlarged part of cylindrical housing, lowered material consumption for making machine due to its optimal size.
2 cl, 1 dwg, 4 tbl
FIELD: minerals concentration equipment employed in processing of mineral crude materials containing ferrous and non-ferrous, rare and precious metals, and also non-metal minerals, and equipment for purifying sewage waters from suspended substances, fats, oils and petroleum products.
SUBSTANCE: flotation machine has separation chamber, reactor made in the form of central tube, to upper part of which tube pulp feeding device and aerator are attached. At least two descending pipes are attached to lower part of central tube so as to form uniform descending flows in said descending pipes. V-shaped pipe is connected with its one bend to lower part of each of descending pipes. Other bend of descending pipe with diffuser secured thereto is disposed in separation chamber. Discharge apertures of diffuser are facing each other so as to produce aeration flocks within separation chamber. Froth settler is mounted on upper part of separation chamber, and froth trough is disposed on froth settler for collecting concentrated product. Tailings discharge device is fixed to lower part of separation chamber.
EFFECT: increased efficiency in flotation, improved quality of concentrate, increased extent of purifying sewage water from contaminants, reduced time and increased flotation velocity.
9 cl, 2 dwg
FIELD: mining; ferrous and nonferrous metallurgy: devices for minerals concentration.
SUBSTANCE: the invention is pertaining to the field of mining, in particular, to enrichment of the minerals and to the pneumatic floater and may be used for flotation of minerals in the coal industry, ferrous and nonferrous metallurgy at the ore mills. The technical result of the invention is optimization of the hydrodynamic and aerodynamic conditions of the floatation process and improved reliability of the pneumatic floater operation. The pneumatic floater includes: the cylinder-conic body; the aerator located in the cylindrical part of the body and having Laval nozzles; the discharge devices for the froth product, which are made in the form of the inserted into the conical deflector hollow member with the conical narrowing above and the conical ring connected to the pipe with a branch. The pneumatic floater also has the tank for the internal overflow with the branch pipe for the fine wastes, the gate for the large wastes and the air dispenser mounted in the upper part of the body. The pneumatic floater is supplied with: the flotation chamber conjugated with the lower part of the body; the perforated deflector-distributor of the air babbles arranged in the lower part of the chamber; the deflector of the air babbles made out of the channel section and arranged in parallel to the bottom of the chamber; and also with the additional aerators, which have been made with the air dispensers in the form of Laval nozzles. Laval nozzles are arranged uniformly against the middle of the sides of the perforated deflector-distributor of the air babbles on the outer side of the flotation chamber and its bottom.
EFFECT: the invention ensures optimization of the hydrodynamic and aerodynamic conditions of the floatation process and improved reliability of the pneumatic floater operation.
FIELD: coal industry; mining; ferrous metallurgy; nonferrous metallurgy; other industries; flotation of minerals and non-metallic raw.
SUBSTANCE: the invention is pertaining to the field of flotation of minerals and non-minerals, in particular, to the floatation machine for foamy separation and may be used in the coal industry, ferrous and nonferrous metallurgy on ore mills, and also at floatation non-metallic raw. The technical result of the invention is optimization of the hydrodynamic and aerodynamic conditions of the floatation process for separation of the coarse-grained material and improvement of reliability of the floatation separation process. The floatation machine includes the bath with the longitudinal froth- chutes, the loading device, the airlift with the vertical partitions, the spacing interval between which is equal to 150 mm. The arranged with the clearance above the airlift mash deflector is separating the aerated mash going out of the airlift into two streams guiding them onto the foam into the floatation sections. The bath has the loading device and the dumping pocket connected to the chute for tailings. The loading device consists of the arc screens separation the feeding into two products - the oversize product containing the large particles of + 0.5 - 3 mm and the through-product containing the small particles with dimensions of -0.5 + 0 mm. The oversize product is fed onto the foam into the floatation machine, and the through-product is fed through the right-angle hole under the foam into the mash volume in the bath. The aerator of the airlift is arranged under the bottom plate of the bath and consists of the short vertical air-dropping tubes arranged along the longitudinal axis of the airlift and connected with the bosses having the internal thread. The tubes bosses enter through the holes in the bottom inside the bath for the small height. Laval nozzles are screwed into them. The clearance between the bosses and the bottom is compacted tightened up. The air-dropping tubes are connected to the horizontal distributing pipe, which through the air duct is connected to the receiver.
EFFECT: the invention ensures optimization of the hydrodynamic and aerodynamic conditions of the floatation process for separation of the coarse-grained materials and improvement of reliability of the floatation separation process.
4 cl, 2 dwg
FIELD: coal industry; metallurgy industry; chemical industry; devices for mineral dressing.
SUBSTANCE: the invention is pertaining to the field of the mineral dressing by the methods of flotation and may be used at the flotation separation of the ore pulps in coal industry, metallurgy industry and chemical industry, and also for purification of the natural and waste waters. The invention allows to heighten the degree of aeration of the ore pulps at the expense of the increased duration of the presence of the pulp in the flotation machine. The flotation machine includes the body divided by the partitions into the straight-flow and counter-flow sections, the aerators, the tools for the pulp feeding into the sections and withdrawal of the products from the sections. The aerators are mounted along the opposite walls of each section. In each section one of the aerators is located in its lower part and the other one is located in the upper part of the section. The outlets of each aerator are facing to the wall of the section opposite to the wall, on which it is mounted. The aerators are installed apart from each other with the space interval in height, which is determined from the following expression: L/2> h> L/5, where h is the spacing interval between the aerators in height in meters, L is the section length in meters.
EFFECT: the invention ensures the increased degree of aeration of the ore pulps due to the increased duration of the pulp presence in the flotation machine.
4 cl, 5 dwg