CN102441494B - One-machine flotation method and device - Google Patents
One-machine flotation method and device Download PDFInfo
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- CN102441494B CN102441494B CN 201110298344 CN201110298344A CN102441494B CN 102441494 B CN102441494 B CN 102441494B CN 201110298344 CN201110298344 CN 201110298344 CN 201110298344 A CN201110298344 A CN 201110298344A CN 102441494 B CN102441494 B CN 102441494B
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Abstract
The invention provides a one-machine flotation method and a device. The device comprises a flotation cavity; a tailings shunting device is arranged on the inner wall surface of the flotation cavity, and comprises more than one spiral channel; an ultrasonic generation device is arranged on the outer wall surface of the flotation cavity; a spiral rotor floating device is arranged at the bottom of the flotation cavity; ore pulp enters into the flotation cavity, and then accomplishes the bubble formation process and the mineralization processes through the spiral rotor floating device synchronously to produce floated ore pulp; floated ore pulp upwards unidirectionally flows in the flotation cavity in a spiral flow state under the guidance of the spiral flow inertia force provided by a spiral rotor to form mineralized bubbles to be discharged from a mineralized bubble outlet; and finally, the flotation process is finished. In the invention, the tailings shunting device is adopted to achieve the continuous scavenging process to outflowing tailings; an ultrasonic dispersion device, the spiral rotor floating device, the tailings shunting device and a liquid medicine cleaning device jointly form a one-machine flotation flow, so that the bubble formation and mineralization effects are fully improved, and the separation of the mineralized bubble from the tailings particles is fully improved with a high efficiency.
Description
Affiliated technical field
The present invention relates to a kind of method for floating and device, especially finish unit method for floating and the device of scanning continuously with continuous refining process in the flotation device inter-sync, belong to the flotation technology field.
Background technology
Well-known floatation process adopts an above flotation device to form the multimachine floatation system and finishes.Every flotation device carries out flotation to the ore pulp that becomes a mandarin, a kind of concentrate slurry of output and a kind of mine tailing slurry.Under closed circuit flotation mode, the mine tailing slurry flows into the rearmounted flotation device of floatation system at the corresponding levels step by step and scans, until the whole level of output mine tailing; Concentrate slurry flow into step by step the preposition flotation device of floatation system at the corresponding levels carry out selected, until the whole level concentrate of output.Under open circuit flotation mode, the mine tailing slurry flows into the rearmounted flotation device of floatation system at the corresponding levels step by step and scans, until the whole level of output mine tailing; The concentrate slurry whole-course open circuit goes out stream, flow into step by step the rearmounted flotation device of subordinate's floatation system carry out selected, until output level concentrate eventually.The described process of scanning, its ore pulp that becomes a mandarin be preposition flotation device and (or) rearmounted flotation device goes out the mine tailing slurry of stream.Described refining process, its ore pulp that becomes a mandarin be rearmounted flotation device and (or) preposition flotation device goes out the concentrate slurry of stream.The described mine tailing of level eventually is for setting the mine tailing slurry that the target particles grade is minimum under the floatation process condition.The described concentrate of level eventually is for setting the highest concentrate slurry of target particles grade under the floatation process condition.Under the direct floatation process mode, target particles is the concentrate particle; Under the reverse floatation process mode, target particles is the mine tailing particle.Studying formerly flotation device (comprising flotation column) can find, the setting of separate unit flotation device flotation function at present, and essence is just carried out simple separation with the mineral laden bubble in the ore pulp after the floating and mine tailing.The consequence of this simple separation is, going out to flow the mine tailing slurry, to carry target particles secretly more, and going out to flow mineral laden bubble, to carry non-target particles secretly more, and flotation flowsheet is also just elongated.Therefore, the necessary improvement.
Summary of the invention
The objective of the invention is just the mineral laden bubble in the ore pulp after the floating and mine tailing to be carried out at existing separate unit flotation device the deficiency of simple separation, proposes a kind of can finishing in the flotation device inter-sync and scan continuously and continuous selected unit method for floating.
Another object of the present invention is: the device for carrying out said that proposes a kind of above-mentioned unit method for floating.
Another object of the present invention is: the purposes that proposes above-mentioned unit method for floating and device.
The technical solution used in the present invention is: a kind of unit method for floating, comprise a flotation chamber, be provided with the mine tailing part flow arrangement at flotation chamber wall inwall, the mine tailing part flow arrangement is one or more helical duct, be provided with ultrasonic generator at flotation chamber wall outer wall, and in the flotation cavity bottom helical rotor floating device be set; Ore pulp is finished bubble generation and mineralization process, ore pulp after the output floating through helical rotor floating device earlier after entering the flotation chamber synchronously; The spiral flow inertia force that ore pulp is provided by helical rotor after the floating guides, and with the spiral flow fluidised form one-way flow that makes progress, forms mineral laden bubble in the flotation chamber, discharges from the mineral laden bubble outlet; Finish floatation process.
Be provided with the soup cleaning device at flotation chamber roof mine tailing exit region; When ore pulp after the floating is flowed through the soup cleaning device with a kind of unidirectional spiral flow fluidised form that upwards flows in the flotation chamber, the soup cleaning device will make and form the continuous desorption of non-target particles that the mineral laden bubble surface is carried secretly and adsorbed mine tailing and enter the helical duct sinking of shunting mine tailing fast and flow to mine tailing outlet discharge;
Described soup cleaning device comprises a convergence hollow cone tube down, and following convergence hollow cone tube is rotatable body; Under restrain and be injected with the cleaning soup in the hollow cone tube, cleaning soup will outwards spray by the hole of restraining the hollow cone tube down, and the concentration of cleaning soup will export between the flotation chamber liquid level at ore pulp after the floating, according to the linear concentration gradient distribution that increases from the bottom to top; The concentration gradient of this cleaning soup, the non-target particles that makes the mineral laden bubble surface carry secretly and adsorb is subjected to the more and more higher hydrophilizing agent effect of concentration in floating-upward process, more and more tend to desorption; Make that the non-target particles in the ore pulp is subjected to the more and more higher hydrophilizing agent effect of concentration after the floating, more and more be difficult to bubble and the mineral laden bubble absorption of being floated.Under the synergy that restrains the eddy flow power that eddy flow power that the hollow cone tube provides and helical rotor provide down, the mine tailing after the floating in the ore pulp, the helical duct that enters the shunting mine tailing fast sinks and flows to the mine tailing outlet and discharges; The mineral laden bubble floating upward quickly enters the mineral laden bubble enrichment region, discharges from the mineral laden bubble outlet by the lifting force of being located at down the following convergence helical blade on the convergence hollow cone tube wall surface.The floating-upward process of mineral laden bubble, essence are to utilize the concentration gradient of cleaning liquor strength linearity increase from the bottom to top in the flotation chamber to carry out selected floatation process continuously.
Described mine tailing particle is subjected to centrifugal force, centripetal force and gravity effect, will be in the process of ore pulp come-up, flow and sinking to flotation chamber wall inwall, wherein, the mine tailing particle rate that particle diameter is bigger is introduced into the helical duct sinking that the mine tailing part flow arrangement is positioned at flotation chamber bottom, and the less mine tailing particle of particle diameter enters the helical duct sinking that the mine tailing part flow arrangement is positioned at flotation chamber middle and upper part; Bubble and mineral laden bubble trend flotation chamber middle section flow and come-up, wherein, the bubble of being carried secretly by mine tailing and mineral laden bubble do not float straight and enter the mineral laden bubble enrichment region, the ultrasonic energy field action that the mine tailing layer extruding that the bubble of being carried secretly by mine tailing and mineral laden bubble are constantly thickened in helical duct and ultrasonic generator provide and fully overflow and adsorb residual target particles trend flotation chamber middle section and flow and float; After the mine tailing particle enters helical duct, all will flow along helical duct, and discharge until reaching the mine tailing outlet, and in the helical duct flow process, accept to be arranged on the ultrasonic flotation that scan continuously to mine tailing the ultrasonic energy field outside the flotation chamber.
Simultaneously, the helical duct gradient of shunting mine tailing is greater than mine tailing angle of repose in the ore pulp after floating, the big and little mine tailing particle of particle diameter of particle diameter like this, enter helical duct after, all will flow along helical duct, export discharge until reaching mine tailing.Tailing stream is through the process of helical duct, and essence is the ultrasonic flotation process of utilizing the ultrasonic energy field that mine tailing is scanned continuously.
In addition, flotation chamber next door arranges a ultrasonic dispersal device, and ultrasonic dispersal device is arranged on sizes mixing between device and the flotation chamber ore pulp entrance, and ore pulp will carry out ultrasonic dispersion treatment by ultrasonic dispersal device to ore pulp earlier before entering the flotation chamber.
Described ultrasonic dispersion treatment refer to size mixing the back ore pulp in way flow in the process of ultrasonic dispersal device, the solid powder surface is cleaned, floating agent is disperseed, and floating agent is fully finished by the medicament dispersion process of setting the parcel solid powder, the ultrasonic dispersion of output back ore pulp.
Described flotation chamber, its cross section comprise circular and regular polygon cross section, and its wall is provided with at least one mine tailing outlet, and its top cross-section is the mineral laden bubble outlet, are provided with the ring-shaped groove of the mineral laden bubble that confluxes around its top mineral laden bubble outlet.
The described process of scanning continuously is by adopting the mine tailing part flow arrangement, build the ultrasonic flotation environment in one or more helical duct on being located at flotation chamber wall inwall, goes out stream after making the helical duct of mine tailing way flow through being provided with the ultrasonic energy field.
Described continuous refining process, be by adopting the soup cleaning device, ore pulp exports in the longitudinal region between the flotation chamber liquid level after floating, build to clean the linear soup that increases of liquor strength and clean environment, mineral laden bubble is passed clean after the linear floating that increases of liquor strength to go out stream behind the ore pulp flow field.
The concrete flotation flowsheet that realizes described unit method for floating is: adopt ultrasonic dispersal device, the ore pulp to be selected of finishing the process of sizing mixing is carried out ultrasonic dispersion, the ultrasonic dispersion of output back ore pulp; Adopt helical rotor floating device, ultrasonic dispersion back ore pulp is carried out bubble produce and mineralising ore pulp after the output floating; Adopt the mine tailing part flow arrangement, the mine tailing in the ore pulp after the floating is carried out spiral shunting and ultrasonic flotation, output is the level mine tailing eventually; Adopt the soup cleaning device, the mineral laden bubble in the ore pulp after the floating is carried out soup clean, output is the level concentrate eventually, is implemented in a flotation device inter-sync thus and finishes and scan continuously and selected unit floatation process continuously.
A kind of flotation device of realizing preceding method, comprise a flotation chamber, flotation chamber wall inwall is provided with the mine tailing part flow arrangement, the mine tailing part flow arrangement is one or more helical duct, be provided with ultrasonic generator at flotation chamber wall outer wall, and in the flotation cavity bottom helical rotor floating device be set.
Be provided with the soup cleaning device at flotation chamber roof mine tailing exit region; Described soup cleaning device comprises a convergence hollow cone tube down, and following convergence hollow cone tube is rotatable body; Under restrain and be injected with the cleaning soup in the hollow cone tube, cleaning soup will outwards spray by the hole of restraining the hollow cone tube down, and the concentration of cleaning soup will export between the flotation chamber liquid level at ore pulp after the floating, according to the linear concentration gradient distribution that increases from the bottom to top;
In addition, flotation chamber next door arranges a ultrasonic dispersal device, and ultrasonic dispersal device is arranged on sizes mixing between device and the flotation chamber ore pulp entrance, and ore pulp will carry out ultrasonic dispersion treatment by ultrasonic dispersal device to ore pulp earlier before entering the flotation chamber.
Described mine tailing part flow arrangement comprises a flotation chamber, is located at one or more helical duct on the flotation chamber wall inwall and is located at an above ultrasonic generator on the flotation chamber wall outer wall;
Described flotation chamber, its cross section comprise circular and regular polygon cross section, and its wall is provided with at least one mine tailing outlet, and its top cross-section is the mineral laden bubble outlet, are provided with the ring-shaped groove of the mineral laden bubble that confluxes around its top mineral laden bubble outlet.
Described soup cleaning device is the device that adopts the cleaning soup contain at least a hydrophilizing agent, flotation chamber liquid level is cleaned with the mineral laden bubble in the lower area; This device can be a convergence hollow cone tube down at least; The described hollow cone of convergence down tube is located at mineral laden bubble enrichment region and the following near zone of flotation chamber liquid level, has same vertical center axis with the flotation chamber, drives rotation at a slow speed by drive unit; Its wall outer wall is provided with at least one convergence helical blade down; It is immersed on the following wall outer wall of liquid level or outside the wall outer wall, is provided with at least one and cleans medicine liquid outlet.
Described ultrasonic dispersal device comprises at least one dispersion chamber and is located at ultrasonic generator on the dispersion chamber wall outer wall more than one; Described dispersion chamber, its cross section comprise circle, rectangle and regular polygon cross section, and its channel diameter or width doubly arrange by ultrasonic wave sound intensity 50-100, and diameter or width unit are mm, and the ultrasonic wave sound intensity is W/cm2.
Described helical rotor floating device comprises a floating chamber cylindraceous and a helical rotor of being located in the floating chamber; Described floating chamber, its bottom wall are provided with ultrasonic dispersion back ore pulp import, and its top is ore pulp outlet after the floating; Described helical rotor, by one with the floating chamber have same vertical center axis hollow axle, be located at least one cored screw blade on the hollow axle, be located on the hollow axle and the stirring vane of cored screw blade below is formed; Described hollow axle is with the compressed air communication of floating chamber outside; Described compressed air in the helical duct that cored screw blade upper bottom surface and bottom surface, hollow axle wall outer wall and floating chamber wall inwall surround, forms an above spiral gas field.
The purposes of a kind of method for floating of unit as described above and device comprises the floatation process that is applied to all solids powder.
Know-why of the present invention and the course of work are:
Finish the ore pulp to be selected after grading and pulp density are adjusted, add the setting floating agent through the device of sizing mixing and size mixing, ore pulp after output is sized mixing.
In the process of ultrasonic dispersal device, efficiently cleaned by the solid powder surface in way flow for ore pulp after sizing mixing, and floating agent is efficiently disperseed, and floating agent is fully finished by the medicament dispersion process of setting the parcel solid powder, the ultrasonic dispersion of output back ore pulp.
In the process of helical rotor floating device, finish bubble synchronously and produce and mineralization process ore pulp after the output floating by the N that compressed air forms in helical duct spiral gas field high-speed cutting in way flow for ultrasonic dispersion back ore pulp.
The spiral flow inertia force that ore pulp is provided by helical rotor after the floating guides, in the flotation chamber with the spiral flow fluidised form one-way flow that makes progress.Be subjected to centrifugal force, centripetal force and gravity effect, mine tailing particle trend flotation chamber wall inwall flows and sinks, wherein, the mine tailing particle rate that particle diameter is bigger is introduced into the helical duct sinking that the mine tailing part flow arrangement is positioned at flotation chamber bottom, and the less mine tailing particle of particle diameter enters the helical duct sinking that the mine tailing part flow arrangement is positioned at flotation chamber middle and upper part; Bubble and mineral laden bubble trend flotation chamber middle section flow and come-up, wherein, the bubble of being carried secretly by mine tailing and mineral laden bubble do not float straight and enter the mineral laden bubble enrichment region, the ultrasonic energy field action that the mine tailing layer extruding that the bubble of being carried secretly by mine tailing and mineral laden bubble are constantly thickened in helical duct and ultrasonic generator provide and fully overflow and adsorb residual target particles trend flotation chamber middle section and flow and float.Because the helical duct gradient of shunting mine tailing is greater than mine tailing angle of repose in the ore pulp after floating, the big and little mine tailing particle of particle diameter of particle diameter, enter helical duct after, all will flow along helical duct, until reaching mine tailing outlet discharge.Tailing stream is through the process of helical duct, and essence is the ultrasonic flotation process of utilizing the ultrasonic energy field that mine tailing is scanned continuously.
Because ore pulp is a kind of unidirectional spiral flow fluidised form that upwards flows in the flotation chamber after the floating, the cleaning soup that the soup cleaning device injects, will be after floating ore pulp export to form in the ore pulp after the floating between the flotation chamber liquid level and clean the liquor strength linear concentration gradient that increases from the bottom to top.The concentration gradient of this cleaning soup, the non-target particles that makes the mineral laden bubble surface carry secretly and adsorb is subjected to the more and more higher hydrophilizing agent effect of concentration in floating-upward process, more and more tend to desorption; Make that the non-target particles in the ore pulp is subjected to the more and more higher hydrophilizing agent effect of concentration after the floating, more and more be difficult to bubble and the mineral laden bubble absorption of being floated.Under the synergy that restrains the eddy flow power that eddy flow power that the hollow cone tube provides and helical rotor provide down, the mine tailing after the floating in the ore pulp, the helical duct that enters the shunting mine tailing fast sinks and flows to the mine tailing outlet and discharges; The mineral laden bubble floating upward quickly enters the mineral laden bubble enrichment region, discharges from the mineral laden bubble outlet by the lifting force of being located at down the following convergence helical blade on the convergence hollow cone tube wall surface.The floating-upward process of mineral laden bubble, essence are to utilize the concentration gradient of cleaning liquor strength linearity increase from the bottom to top in the flotation chamber to carry out selected floatation process continuously.
This shows, ore pulp after the floating of ultrasonic dispersion and helical rotor floating output, the floatation process in the flotation chamber is that a kind of finishing synchronously scanned and continuous selected unit floatation process continuously.
Advantage of the present invention is:
1) utilizes ore pulp unidirectional upwards fluidised form of helical flow in the flotation chamber after the floating, adopt the mine tailing part flow arrangement to realize the process of scanning continuously to going out to flow mine tailing, adopt the soup cleaning device to realize continuous refining process to going out to flow mineral laden bubble, steady decrease mine tailing run the tail grade, stable mineral laden bubble quality and the productive rate of having improved.
2) adopt the cleaning soup to clean mineral laden bubble, be conducive to the bigger bubble of applied tension and produce scheme.Bubble surface tension force is more big, and bubble is just more big to the bearing capacity of particle, and the bubble proportion that breaks is just more little, because of the break target particles desorption proportion that causes of bubble just more little.Because the direct output of unit floatation process is the level concentrate eventually, be difficult to mineral laden bubble is carried secretly and the non-target particles that adsorbs carries out efficient desorption and is easy to cause the negative effect of rearmounted floatation process concentrate slurry blocked path because of the bubble overtension thereby effectively eliminate formerly method for floating and device.
3) adopt ultrasonic dispersal device, helical rotor floating device, mine tailing part flow arrangement and soup cleaning device to form the unit flotation flowsheet, substantially improved bubble and produced and mineralising effect, mineral laden bubble and the efficient separating effect of mine tailing particle, especially be conducive to floatation process is implemented efficient and stable automatic control measure by function.
4) the present invention is adapted to the unit floatation process of all solids powder, the unit floatation process of especially difficult ore dressing.
Description of drawings
Fig. 1 is a kind of unit flotation unit.
Fig. 2 is another kind of unit flotation unit.
Among Fig. 1,1, ore pulp to be selected; 2, floating agent; 3, liquid level; 4, the device of sizing mixing; 5, size mixing the back ore pulp; 6, ring-shaped groove; 7, mineral laden bubble outlet; 8, liquid level; 9, clean soup; 10, liquid level; 11, drive unit; 12, soup cleaning device; 13, restrain the hollow cone tube down; 14, mineral laden bubble enrichment region; 15, clean medicine liquid outlet; 16, restrain helical blade down; 17, whole level concentrate; 18, mine tailing part flow arrangement; 19, helical duct; 20, ultrasonic generator; 21, ore pulp after the floating; 22, mine tailing outlet; 23, whole level mine tailing; 24, flotation chamber; 25, ore pulp outlet after the floating; 26, helical rotor; 27, wall; 28, helical duct; 29, floating chamber; 30, helical rotor floating device; 31, cored screw blade; 32, hollow axle; 33, compressed air; 34, stirring vane; 35, ultrasonic dispersion back ore pulp import; 36, ore pulp after the ultrasonic dispersion; 37, dispersion chamber; 38, ultrasonic generator; 39, ultrasonic dispersal device.
Among Fig. 2,40, the soup cleaning device; 41, restrain the hollow cone tube down; 42, clean medicine liquid outlet.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples, but protection scope of the present invention is not limited to the described scope of embodiment.
By accompanying drawing as can be seen, the present invention relates to a kind of unit method for floating, comprise a flotation chamber, be provided with the mine tailing part flow arrangement at flotation chamber wall inwall, the mine tailing part flow arrangement is one or more helical duct, be provided with ultrasonic generator at flotation chamber wall outer wall, and in the flotation cavity bottom helical rotor floating device be set; Ore pulp is finished bubble generation and mineralization process, ore pulp after the output floating through helical rotor floating device earlier after entering the flotation chamber synchronously; The spiral flow inertia force that ore pulp is provided by helical rotor after the floating guides, and with the spiral flow fluidised form one-way flow that makes progress, forms mineral laden bubble in the flotation chamber, discharges from the mineral laden bubble outlet; Finish floatation process.
Be provided with the soup cleaning device at flotation chamber roof mine tailing exit region; When ore pulp after the floating is flowed through the soup cleaning device with a kind of unidirectional spiral flow fluidised form that upwards flows in the flotation chamber, the soup cleaning device will make and form the continuous desorption of non-target particles that the mineral laden bubble surface is carried secretly and adsorbed mine tailing and enter the helical duct sinking of shunting mine tailing fast and flow to mine tailing outlet discharge;
Described soup cleaning device comprises a convergence hollow cone tube down, and following convergence hollow cone tube is rotatable body; Under restrain and be injected with the cleaning soup in the hollow cone tube, cleaning soup will outwards spray by the hole of restraining the hollow cone tube down, and the concentration of cleaning soup will export between the flotation chamber liquid level at ore pulp after the floating, according to the linear concentration gradient distribution that increases from the bottom to top; The concentration gradient of this cleaning soup, the non-target particles that makes the mineral laden bubble surface carry secretly and adsorb is subjected to the more and more higher hydrophilizing agent effect of concentration in floating-upward process, more and more tend to desorption; Make that the non-target particles in the ore pulp is subjected to the more and more higher hydrophilizing agent effect of concentration after the floating, more and more be difficult to bubble and the mineral laden bubble absorption of being floated.Under the synergy that restrains the eddy flow power that eddy flow power that the hollow cone tube provides and helical rotor provide down, the mine tailing after the floating in the ore pulp, the helical duct that enters the shunting mine tailing fast sinks and flows to the mine tailing outlet and discharges; The mineral laden bubble floating upward quickly enters the mineral laden bubble enrichment region, discharges from the mineral laden bubble outlet by the lifting force of being located at down the following convergence helical blade on the convergence hollow cone tube wall surface.The floating-upward process of mineral laden bubble, essence are to utilize the concentration gradient of cleaning liquor strength linearity increase from the bottom to top in the flotation chamber to carry out selected floatation process continuously.
Described mine tailing particle is subjected to centrifugal force, centripetal force and gravity effect, will be in the process of ore pulp come-up, flow and sinking to flotation chamber wall inwall, wherein, the mine tailing particle rate that particle diameter is bigger is introduced into the helical duct sinking that the mine tailing part flow arrangement is positioned at flotation chamber bottom, and the less mine tailing particle of particle diameter enters the helical duct sinking that the mine tailing part flow arrangement is positioned at flotation chamber middle and upper part; Bubble and mineral laden bubble trend flotation chamber middle section flow and come-up, wherein, the bubble of being carried secretly by mine tailing and mineral laden bubble do not float straight and enter the mineral laden bubble enrichment region, the ultrasonic energy field action that the mine tailing layer extruding that the bubble of being carried secretly by mine tailing and mineral laden bubble are constantly thickened in helical duct and ultrasonic generator provide and fully overflow and adsorb residual target particles trend flotation chamber middle section and flow and float; After the mine tailing particle enters helical duct, all will flow along helical duct, and discharge until reaching the mine tailing outlet, and in the helical duct flow process, accept to be arranged on the ultrasonic flotation that scan continuously to mine tailing the ultrasonic energy field outside the flotation chamber.
Simultaneously, the helical duct gradient of shunting mine tailing is greater than mine tailing angle of repose in the ore pulp after floating, the big and little mine tailing particle of particle diameter of particle diameter like this, enter helical duct after, all will flow along helical duct, export discharge until reaching mine tailing.Tailing stream is through the process of helical duct, and essence is the ultrasonic flotation process of utilizing the ultrasonic energy field that mine tailing is scanned continuously.
In addition, flotation chamber next door arranges a ultrasonic dispersal device, and ultrasonic dispersal device is arranged on sizes mixing between device and the flotation chamber ore pulp entrance, and ore pulp will carry out ultrasonic dispersion treatment by ultrasonic dispersal device to ore pulp earlier before entering the flotation chamber.
Described ultrasonic dispersion treatment refer to size mixing the back ore pulp in way flow in the process of ultrasonic dispersal device, the solid powder surface is cleaned, floating agent is disperseed, and floating agent is fully finished by the medicament dispersion process of setting the parcel solid powder, the ultrasonic dispersion of output back ore pulp.
Described flotation chamber, its cross section comprise circular and regular polygon cross section, and its wall is provided with at least one mine tailing outlet, and its top cross-section is the mineral laden bubble outlet, are provided with the ring-shaped groove of the mineral laden bubble that confluxes around its top mineral laden bubble outlet.
The described process of scanning continuously is by adopting the mine tailing part flow arrangement, build the ultrasonic flotation environment in one or more helical duct on being located at flotation chamber wall inwall, goes out stream after making the helical duct of mine tailing way flow through being provided with the ultrasonic energy field.
Described continuous refining process, be by adopting the soup cleaning device, ore pulp exports in the longitudinal region between the flotation chamber liquid level after floating, build to clean the linear soup that increases of liquor strength and clean environment, mineral laden bubble is passed clean after the linear floating that increases of liquor strength to go out stream behind the ore pulp flow field.
Described unit method for floating, adopt mine tailing part flow arrangement 18, build the ultrasonic flotation environment in one or more helical duct 19 on being located at flotation chamber 24 walls 27 inwalls, flow out mine tailing outlet 22 after making the helical duct 19 of mine tailing way flow through being provided with the ultrasonic energy field, finish the process of scanning continuously; Adopt soup cleaning device 12, ore pulp outlet 25 is in the longitudinal region between the flotation chamber liquid level 8 after floating, build and clean the linear soup cleaning environment that increases of soup 9 concentration, mineral laden bubble is passed clean after the linear floating that increases of soup 9 concentration emersion flotation chamber liquid level 8 behind ore pulp 21 flow fields, finish continuous refining process.
Its concrete flotation flowsheet is: adopt ultrasonic dispersal device 39, the ore pulp to be selected 1 of finishing the process of sizing mixing is carried out ultrasonic dispersion, the ultrasonic dispersion of output back ore pulp 36; Adopt helical rotor floating device 30, ultrasonic dispersion back ore pulp 36 is carried out bubble produce and mineralising, ore pulp 21 after the output floating; Adopt mine tailing part flow arrangement 18, the mine tailing in the ore pulp after the floating 21 is carried out spiral shunting and ultrasonic flotation, output is level mine tailing 23 eventually; Adopt soup cleaning device 12, the mineral laden bubble in the ore pulp after the floating 21 is carried out soup clean, output is level concentrate 17 eventually.
A kind of flotation device of realizing preceding method, comprise a flotation chamber, flotation chamber wall inwall is provided with the mine tailing part flow arrangement, the mine tailing part flow arrangement is one or more helical duct, be provided with ultrasonic generator at flotation chamber wall outer wall, and in the flotation cavity bottom helical rotor floating device be set.
Be provided with the soup cleaning device at flotation chamber roof mine tailing exit region; Described soup cleaning device comprises a convergence hollow cone tube down, and following convergence hollow cone tube is rotatable body; Under restrain and be injected with the cleaning soup in the hollow cone tube, cleaning soup will outwards spray by the hole of restraining the hollow cone tube down, and the concentration of cleaning soup will export between the flotation chamber liquid level at ore pulp after the floating, according to the linear concentration gradient distribution that increases from the bottom to top;
In addition, flotation chamber next door arranges a ultrasonic dispersal device, and ultrasonic dispersal device is arranged on sizes mixing between device and the flotation chamber ore pulp entrance, and ore pulp will carry out ultrasonic dispersion treatment by ultrasonic dispersal device to ore pulp earlier before entering the flotation chamber.
Described ultrasonic dispersal device 39 comprises at least one dispersion chamber 37 and is located at ultrasonic generator 38 on the dispersion chamber 37 wall outer walls more than one; Dispersion chamber 37 cross sections comprise circle, rectangle and regular polygon cross section, and its channel diameter or width doubly arrange by ultrasonic wave sound intensity 50-100, and diameter or width unit are mm, and the ultrasonic wave sound intensity is W/cm2.
Described helical rotor floating device 30 comprises a floating chamber 29 cylindraceous and a helical rotor 26 of being located in the floating chamber 29; Floating chamber 29, its bottom wall are provided with ultrasonic dispersion back ore pulp import 35, and its top is ore pulp outlet 25 after the floating; Helical rotor 26, by one with floating chamber 29 have same vertical center axis hollow axle 32, be located at least one cored screw blade 31 on the hollow axle 32, be located on the hollow axle 32 and the stirring vane 34 of cored screw blade 31 belows is formed; Hollow axle 32 is communicated with the compressed air 33 of floating chamber 29 outsides; Compressed air 33 in the helical duct 28 that cored screw blade 31 upper bottom surfaces and bottom surface, hollow axle 32 wall outer walls and floating chamber 29 wall inwalls surround, forms an above spiral gas field.
Described mine tailing part flow arrangement 18 comprises flotation chamber 24, is located at one or more helical duct 19 on the flotation chamber 24 wall inwalls and is located at an above ultrasonic generator 20 on the flotation chamber 24 wall outer walls; Flotation chamber 24, its cross section comprise circular and regular polygon cross section, and its wall 27 is provided with at least one mine tailing outlet 22, and its top cross-section is mineral laden bubble outlet 7, are provided with the ring-shaped groove 6 of the mineral laden bubble that confluxes around its top mineral laden bubble outlet 7.
Described soup cleaning device 12 is the devices that adopt 9 pairs of flotation chambers of the cleaning soup liquid level 8 contain at least a hydrophilizing agent to clean with the mineral laden bubble in the lower area; This device can be a convergence hollow cone tube 13 down at least; Under restrain hollow cone tube 13, be located at mineral laden bubble enrichment region 14 and flotation chamber liquid level 8 following near zones, have same vertical center axis with flotation chamber 24, drive rotation at a slow speed by drive unit 11; Its wall outer wall is provided with at least one convergence helical blade 16 down; It is immersed on the wall outer wall of liquid level below 8 or outside the wall outer wall, is provided with at least one and cleans medicine liquid outlet 15.
Know-why of the present invention and the course of work are:
Finish the ore pulp to be selected 1 after grading and pulp density are adjusted, add setting floating agent 2 through the device 4 of sizing mixing and size mixing, ore pulp 5 after output is sized mixing.
Size mixing the back ore pulp 5 in way flow in the process of ultrasonic dispersal device 39, the solid powder surface is efficiently cleaned, floating agent 2 is efficiently disperseed, and floating agent 2 is fully finished by the medicament dispersion process of setting the parcel solid powder, the ultrasonic dispersion of output back ore pulp 36.
In the process of helical rotor floating device 30, finish bubble synchronously and produce and mineralization process by N the spiral gas field high-speed cutting that compressed air 33 forms in helical duct 28 in way flow for ultrasonic dispersion back ore pulp 36, and ore pulp 21 after the output floating.
The spiral flow inertia force that ore pulp 21 is provided by helical rotor 26 after the floating guides, in flotation chamber 24 with the spiral flow fluidised form one-way flow that makes progress.Be subjected to centrifugal force, centripetal force and gravity effect, mine tailing trend flotation chamber wall 27 inwalls flow and sink, wherein, the mine tailing particle rate that particle diameter is bigger is introduced into helical duct 19 sinkings that mine tailing part flow arrangement 18 is positioned at flotation chamber 24 bottoms, and the less mine tailing particle of particle diameter enters helical duct 19 sinkings that mine tailing part flow arrangement 18 is positioned at flotation chamber 24 middle and upper parts; Bubble and mineral laden bubble trend flotation chamber 24 middle sections flow and come-up, wherein, the bubble of being carried secretly by mine tailing and mineral laden bubble do not float straight and enter mineral laden bubble enrichment region 14, the ultrasonic energy field action that the mine tailing layer extruding that the bubble of being carried secretly by mine tailing and mineral laden bubble are constantly thickened in helical duct 19 and ultrasonic generator 20 provide and fully overflow and adsorb residual target particles trend flotation chamber 24 middle sections and flow and float.Because helical duct 19 gradients of shunting mine tailing are greater than mine tailing angle of repose in the ore pulp 21 after floating, the big and little mine tailing particle of particle diameter of particle diameter, enter helical duct 19 after, all will flow along helical duct 19, until reaching mine tailing outlet 22 discharges.Tailing stream is through the process of helical duct 19, and essence is the ultrasonic flotation process of utilizing the ultrasonic energy field that mine tailing is scanned continuously.
Because ore pulp 21 is a kind of unidirectional spiral flow fluidised form that upwards flows in flotation chamber 24 after the floating, the cleaning soup 9 that soup cleaning device 12 injects, will be after floating ore pulp outlet 25 form in the ore pulp 21 after the floating between the flotation chamber liquid level 8 and clean the soup 9 concentration linear concentration gradient that increases from the bottom to top.The concentration gradient of this cleaning soup 9, the non-target particles that makes the mineral laden bubble surface carry secretly and adsorb is subjected to the more and more higher hydrophilizing agent effect of concentration in floating-upward process, more and more tend to desorption; Make that the non-target particles in the ore pulp 21 is subjected to the more and more higher hydrophilizing agent effect of concentration after the floating, more and more be difficult to bubble and the mineral laden bubble absorption of being floated.Under the synergy that restrains the eddy flow power that eddy flow power that hollow cone tube 13 provides and helical rotor 26 provide down, the mine tailing after the floating in the ore pulp 21, the helical duct 19 that enters the shunting mine tailing fast sinks and flows to mine tailing outlet 22 and discharges; The mineral laden bubble floating upward quickly enters mineral laden bubble enrichment region 14, discharges from mineral laden bubble outlet 7 by the lifting force of being located at down the following convergence helical blade 16 on convergence hollow cone tube 13 walls.The floating-upward process of mineral laden bubble, essence are to utilize the concentration gradient of cleaning the linearity increase from the bottom to top of soup 9 concentration in the flotation chamber 24 to carry out selected floatation process continuously.
This shows, ore pulp 21 after the floating of ultrasonic dispersion and helical rotor floating output, the floatation process in flotation chamber 24 is that a kind of finishing synchronously scanned and continuous selected unit floatation process continuously.
The purposes of described unit method for floating comprises the floatation process that is applied to all solids powder.
Embodiment oneA kind of unit flotation unit
Shown in Figure 1 is a kind of unit flotation unit of realizing the unit method for floating, comprises ultrasonic dispersal device 39, helical rotor floating device 30, mine tailing part flow arrangement 18 and soup cleaning device 12.Clean soup 9 and be ore pulp 21 after the floating through being located at down the cleaning medicine liquid outlet 15 injection flotation chamber liquid levels 8 following near zones on the convergence hollow cone tube 13 wall outer walls; Mine tailing is through being located at one or more the helical duct 19 enrichment sedimentation on flotation chamber wall 27 inwalls, being implemented ultrasonic flotation at spiral flow continuously in the process of mine tailing outlet 22.
As can be seen, the following convergence hollow cone tube 13 that soup cleaning device 12 rotates at a slow speed forms the eddy flow power identical with ore pulp 21 direction of rotation after the floating, for the fine tailings of liquid level 8 following near zones is strengthened centrifugal driving force.Restraining hollow cone tube 13 down, to be inserted into liquid level 8 be smooth surface with the wall outer wall of lower area, is intended to shorten the distance that fine tailings enters helical duct 19, makes fine tailings enter helical duct 19 fast; Its clean medicine liquid outlet 15 with under restrain hollow cone tube 13 rotation cloth liquid, clean soup 9 homogeneous dispersion degree in the ore pulp 21 after floating to strengthen; Its wall outer wall that is inserted into the mineral laden bubble enrichment region 14 of liquid level more than 8 is provided with at least one convergence helical blade 16 down, and the mineral laden bubble that is intended to help through after soup cleans goes out stream fast; Adopting the undercurrent mode to inject under the feed liquid way that cleans soup 9, its liquid level 10 that cleans soup 9 is higher than the liquid level 8 of ore pulp 21 after the floating.
It can also be seen that mineral syrup liquid 8 is to be in same horizontal plane after the liquid level of the device 4 of sizing mixing 3 and the floating, by the size mixing liquid level 3 of device 4 of adjustment, can realize the accurate adjustment to mineral laden bubble enrichment region 14 height.
It can also be seen that, flow on ore pulp 21 screws after the floating that its eddy flow power makes the mine tailing trend be located at enrichment sedimentations in the helical duct 19 on the flotation chamber 24 wall inwalls.When the mine tailing particles settling to helical duct 19 bottom surfaces, in fact the mine tailing particle has broken away from the influence power to flotation chamber 24 middle section tailings concentrations.Therefore, the concentration gradient that mine tailing forms in flotation chamber 24 vertical middle sections is the concentration gradient of linear decrease from the bottom to top.This concentration gradient is conducive to reduce mineral laden bubble and in floating-upward process non-target particles is carried secretly absorption and mine tailing particle to mineral laden bubble Surface Physical frictional force.
By the cleaning soup 9 that setting adds, inject in the following convergence hollow cone tube 13 of rotation at a slow speed, again ore pulp 21 after the floating through cleaning medicine liquid outlet 15 injection flotation chamber liquid levels 8 following near zones.According to concentration diffusion shifting balance theory, clean soup 9 and will in the flotation chamber, form the concentration gradient of linear increment from the bottom to top.Clean the hydrophilizing agent in the soup 9, selective absorption is in non-target particles surface, makes the efficient desorption of non-target particles and mineral laden bubble or is difficult to effectively be adsorbed by mineral laden bubble.Because between the decanting zone of flotation chamber liquid level below 8, the helical duct 19 that has been covered with the enrichment mine tailing, unite under the eddy flow power effect that provides at ore pulp after the floating 21 and following convergence hollow cone tube 13, non-target particles after the floating of not carried secretly by mineral laden bubble and adsorbing in the ore pulp 21 enters helical duct 19 nearby fast in the process of flowing on screw; Carried secretly by mineral laden bubble and adsorb the non-target particles that enters liquid level 8 following near zones, efficiently wrapped up by hydrophilizing agent, also enter helical duct 19 nearby fast.
Obviously, through above-mentioned setting, flotation chamber 24 comprises that mineral laden bubble enrichment region 14 and liquid level 8 with vertical middle section of lower area, have in fact formed mineral laden bubble is implemented selected ore pulp flow field continuously, and mineral laden bubble quality and productive rate are all significantly improved.
Embodiment twoAnother kind of unit flotation unit
Shown in Figure 2 is the another kind of unit flotation unit of realizing the unit method for floating, comprises ultrasonic dispersal device 39, helical rotor floating device 30, mine tailing part flow arrangement 18 and soup cleaning device 40.As can be seen, its know-why and the course of work are the same with embodiment one.Difference is, cleans soup 9 and be ore pulp 21 after the floating through being located at down at least one outer cleaning medicine liquid outlet 42 injection flotation chamber liquid levels 8 following near zone of convergence hollow cone tube 41 wall outer walls.
The advantage of this soup cleaning device 40 is, can adopt the pump pressure spray pattern to inject in the ore pulp 21 after the floating and clean soup 9, strengthens the diffusion effect that cleans soup 9.
Claims (8)
1. unit method for floating, comprise a flotation chamber, be provided with the mine tailing part flow arrangement at flotation chamber wall inwall, the mine tailing part flow arrangement is one or more helical duct, be provided with ultrasonic generator at flotation chamber wall outer wall, and in the flotation cavity bottom helical rotor floating device be set; Ore pulp is finished bubble generation and mineralization process, ore pulp after the output floating through helical rotor floating device earlier after entering the flotation chamber synchronously; The spiral flow inertia force that ore pulp is provided by helical rotor after the floating guides, and with the spiral flow fluidised form one-way flow that makes progress, forms mineral laden bubble in the flotation chamber, discharges from the mineral laden bubble outlet; Finish floatation process; It is characterized in that: the concrete flotation flowsheet that realizes described unit method for floating is: adopt ultrasonic dispersal device, the ore pulp to be selected of finishing the process of sizing mixing is carried out ultrasonic dispersion, the ultrasonic dispersion of output back ore pulp; Adopt helical rotor floating device, ultrasonic dispersion back ore pulp is carried out bubble produce and mineralising ore pulp after the output floating; Adopt the mine tailing part flow arrangement, the mine tailing in the ore pulp after the floating is carried out spiral shunting and ultrasonic flotation, output is the level mine tailing eventually; Adopt the soup cleaning device, the mineral laden bubble in the ore pulp after the floating is carried out soup clean, output is the level concentrate eventually, is implemented in a flotation device inter-sync thus and finishes and scan continuously and selected unit floatation process continuously.
2. unit method for floating as claimed in claim 1 is characterized in that: be provided with the soup cleaning device at flotation chamber roof mine tailing exit region; When ore pulp after the floating is flowed through the soup cleaning device with a kind of unidirectional spiral flow fluidised form that upwards flows in the flotation chamber, the soup cleaning device will make and form the continuous desorption of non-target particles that the mineral laden bubble surface is carried secretly and adsorbed mine tailing and enter the helical duct sinking of shunting mine tailing fast and flow to mine tailing outlet discharge.
3. unit method for floating as claimed in claim 2 is characterized in that: described soup cleaning device comprises a convergence hollow cone tube down, and following convergence hollow cone tube is rotatable body; Under restrain and be injected with the cleaning soup in the hollow cone tube, cleaning soup will outwards spray by the hole of restraining the hollow cone tube down, and the concentration of cleaning soup will export between the flotation chamber liquid level at ore pulp after the floating, according to the linear concentration gradient distribution that increases from the bottom to top; The floating-upward process of mineral laden bubble, essence are to utilize the concentration gradient of cleaning liquor strength linearity increase from the bottom to top in the flotation chamber to carry out selected floatation process continuously.
4. unit method for floating as claimed in claim 3, it is characterized in that: the described process of scanning continuously, be by adopting the mine tailing part flow arrangement, build the ultrasonic flotation environment in one or more helical duct on being located at flotation chamber wall inwall, go out stream after making the helical duct of mine tailing way flow through being provided with the ultrasonic energy field.
5. unit method for floating as claimed in claim 3, it is characterized in that: described continuous refining process, be by adopting the soup cleaning device, ore pulp exports in the longitudinal region between the flotation chamber liquid level after floating, build to clean the linear soup that increases of liquor strength and clean environment, mineral laden bubble is passed clean after the linear floating that increases of liquor strength to go out stream behind the ore pulp flow field.
6. flotation unit of realizing the described unit method for floating of claim 1, comprise a flotation chamber, flotation chamber wall inwall is provided with the mine tailing part flow arrangement, the mine tailing part flow arrangement is one or more helical duct, be provided with ultrasonic generator at flotation chamber wall outer wall, and in the flotation cavity bottom helical rotor floating device be set; It is characterized in that: described soup cleaning device comprises a convergence hollow cone tube down, and following convergence hollow cone tube is rotatable body; Under restrain and be injected with the cleaning soup in the hollow cone tube, cleaning soup will outwards spray by the hole of restraining the hollow cone tube down, and the concentration of cleaning soup will export between the flotation chamber liquid level at ore pulp after the floating, according to the linear concentration gradient distribution that increases from the bottom to top.
7. flotation unit as claimed in claim 6 is characterized in that: be provided with the soup cleaning device at flotation chamber roof mine tailing exit region.
8. flotation unit as claimed in claim 7, it is characterized in that: flotation chamber next door arranges a ultrasonic dispersal device, ultrasonic dispersal device is arranged on sizes mixing between device and the flotation chamber ore pulp entrance, ore pulp will carry out ultrasonic dispersion treatment by ultrasonic dispersal device to ore pulp earlier before entering the flotation chamber.
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| CN105880035B (en) * | 2016-04-11 | 2017-11-07 | 安徽理工大学 | It is a kind of possess from size mixing and self-defoaming function ore pulp driving stirring-type floatation equipment |
| BR112019002594B8 (en) * | 2016-08-15 | 2023-01-31 | Outotec Finland Oy | FLOTATION METHOD |
| CN109731698B (en) * | 2019-03-15 | 2020-05-08 | 中国矿业大学 | High-ash and easily-floating fine-grain coal slime column sorting device and method |
| CN110817294A (en) * | 2019-10-31 | 2020-02-21 | 浙江工业大学 | Conical spiral bubble conveying device and preparation method thereof |
| CN112057947B (en) * | 2020-09-22 | 2022-08-02 | 中国石油化工股份有限公司 | Solid-liquid separation device and method thereof |
| CN113102120B (en) * | 2021-05-06 | 2022-05-17 | 山东科技大学 | Multi-frequency ultrasonic flotation bubble strengthening and mineralizing device |
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| CN2155949Y (en) * | 1993-04-20 | 1994-02-16 | 杨德信 | Single trough flotation equipment |
| FI117619B (en) * | 2005-03-07 | 2006-12-29 | Outokumpu Technology Oyj | Flotation method and flotation circuit |
| CN2815512Y (en) * | 2005-08-18 | 2006-09-13 | 钱兆鑫 | Column type compartment sorting unit |
| CN200957378Y (en) * | 2006-09-25 | 2007-10-10 | 湖南省煤炭科学研究所 | Mineralizer of microfoam flotation machine |
| CN200963607Y (en) * | 2006-10-16 | 2007-10-24 | 孙玉堂 | Combined flotation column |
| CN102179313B (en) * | 2010-12-28 | 2013-06-19 | 株洲市兴民科技有限公司 | Single-trough floatation method adopting helical rotor, device and use |
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