CN205146121U - Particulate material size mixing equipment - Google Patents
Particulate material size mixing equipment Download PDFInfo
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- CN205146121U CN205146121U CN201520970801.0U CN201520970801U CN205146121U CN 205146121 U CN205146121 U CN 205146121U CN 201520970801 U CN201520970801 U CN 201520970801U CN 205146121 U CN205146121 U CN 205146121U
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Abstract
The utility model discloses a particulate material size mixing equipment, including the staving and installing the support at the staving port, staving upper portion is provided with the discharge gate, is provided with the static cutting device of guide cylinder, one -level impeller, second grade impeller and fluid in the staving, installs impeller actuating mechanism on the support, and guide cylinder fixed mounting is in the bottom of support, and the static cutting device of fluid includes the mixed unit of draft tube and static state, and the one -level impeller is axial -flow impeller, and the second grade impeller is radial flow impeller, impeller actuating mechanism includes motor and (mixing) shaft, all links firmly with one -level impeller and second grade impeller after the lower extreme of (mixing) shaft passes guide cylinder, and the (mixing) shaft rotates and is connected with the static unit that mixes, and demountable installation has the baffle outside the draft tube lower extreme. The utility model discloses can effective solve present size mixing equipment to the particulate material efficiency problem on the low side of sizing mixing, realize the ore pulp homogenization through the circulation, strengthen material dispersion, activation through making up strong shearings unit, finally realize particulate, the high -efficient recovery of fine grain mineral.
Description
Technical field
The utility model belongs to mineral processing preconditioning technique field, relates to a kind of efficient size mixing equipment, especially relates to a kind of fine size mixing equipment.
Background technology
The appropriate particle size scope of usual foam flotation is-100+7 μm or-74+3 μm, i.e. so-called particulate.Little and specific surface the is large characteristic of particulate, fine-particle minerals quality to make in ore pulp system between particle, show between particle and liquid phase and be unfavorable for pharmacy effect, the mineralization even phenomenon of sorting, and the feature of its outstanding behaviours is that poor selectivity, particulate are solidifying etc. mutually.In order to strengthen the recovery of fine, domestic and international researcher has carried out a series of research, comprises fine particles flotation medicament, floatation equipment and mixing method.In floating agent and floatation equipment, achieve some progress at present, have developed a collection of novel fine particles flotation medicament and floatation equipment, but the attention of the operation of sizing mixing as froth flotation pretreatment link is nowhere near.All the time due to the simplicity of mechanism construction of sizing mixing, and be not the main equipment of froth flotation unit, thus concerned less.Current size mixing equipment and mode of sizing mixing do not obtain gratifying effect to sizing mixing of microfine, and tracing it to its cause is that existing technology of sizing mixing is not deep enough to the research of fine grained scale problem.
The unit of sizing mixing of foam floating process generally carries out mixing of material and medicament in churned mechanically mode, and on current mining processing industry, size mixing equipment is based on agitator.Along with the maximization of equipment, agitator inner fluid mass motion speed improves gradually, and the relative velocity of microfine and fluid reduces gradually.Therefore, although large-scale tank diameter is by the ample time of sizing mixing of tank diameter Calculation of Effective Volume, actual effect of sizing mixing does not reach designing requirement, makes to occur in floatation process roughly selecting flotation effect difference, and scans the higher medicament lag issues of the rate of recovery.
Realize efficiently sizing mixing of microfine, just need the fundamental property according to microfine, build the fluid environment of Strong shear, improve the speed difference between particle and fluid, promote the efficient activation of microfine in the process of sizing mixing.There are some researches show, one efficiently the process of sizing mixing be by circulation with shear the mixed process of co-controlling: the great turbulence level that enough shear strengths can realize fluid spreads, with refinement micelle size, broken condensate; And good circulation ability can facilitate the quick transmission of size mixing equipment inner fluid, realize different fluid and exchanged fully.Material will reach the mixed effect of regulation, and pretreatment unit of sizing mixing must provide suitable circulation and shear action, and rational space shear intensity distribution, makes it to match with technological requirement.Meanwhile, also need to carry out promoting shear action spatial cache further for main optimal design.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, a kind of fine size mixing equipment is provided, its structure is simple, design science is reasonable, effectively can solve existing size mixing equipment to size mixing efficiency problem on the low side to fine, realizing ore pulp by circulation to homogenize, by building Strong shear unit strengthening material dispersion, activation, finally realizing particulate, fine-particle minerals high efficiente callback, application is wide, is suitable for promoting the use of.
For achieving the above object, the technical solution adopted in the utility model is: a kind of fine size mixing equipment, it is characterized in that: comprise staving and the support being arranged on staving port, the top of described staving is provided with discharging opening, guide cylinder is provided with in described staving, one stage impeller, sencond stage impeller and hydrostatic cutter sweep, described support is provided with impeller drive, described guide cylinder is fixedly mounted on the bottom of support, described one stage impeller, sencond stage impeller and hydrostatic cutter sweep are all positioned at the below of guide cylinder, described hydrostatic cutter sweep comprises guide shell and is fixedly mounted on the static mixer in guide shell, described one stage impeller is arranged in guide shell, described sencond stage impeller is arranged on outside guide shell, described one stage impeller is positioned at the top of static mixer, described sencond stage impeller is positioned at the below of static mixer, the upper surface of described guide shell is concordant with the upper surface of one stage impeller, the lower surface of described guide shell is concordant with the upper surface of sencond stage impeller, described one stage impeller is aial flow impeller, described sencond stage impeller is radial flow impeller, the upper end of described guide shell is fixedly connected with the lower end of guide cylinder, the upper surface of described guide cylinder is higher than discharging opening, the lower surface of described guide cylinder is lower than discharging opening, described impeller drive comprises motor and shaft, the output shaft of described motor is fixedly connected with the upper end of shaft, the lower end of described shaft is all fixedly connected with sencond stage impeller with one stage impeller through after guide cylinder, described shaft and static mixer are rotationally connected, described motor is rack-mount, the lower end outside of described guide shell is detachably provided with baffle plate, and described baffle plate is fixedly connected with the inwall of staving.
Above-mentioned a kind of fine size mixing equipment, it is characterized in that: described static mixer comprises fixed mount and centre mount, described centre mount is arranged in fixed mount, multiple hinged joint is fixedly connected with between described fixed mount and centre mount, angle between described hinged joint and the end face of fixed mount is 30 ° ~ 150 °, the quantity of described hinged joint is 4 ~ 8, and the shape of described fixed mount is circular, and described fixed mount is fixed on guide shell by set bolt.
Above-mentioned a kind of fine size mixing equipment, it is characterized in that: the quantity of described static mixer is multiple, the quantity of described static mixer is not more than four, and multiple described static mixer stacks setting, and the hinged joint interval of adjacent two described static mixers is arranged.
Above-mentioned a kind of fine size mixing equipment, it is characterized in that: the shape of cross section of described staving, guide cylinder and guide shell is circle, the shape of described static mixer is circular, and the center of circle of described staving, guide cylinder, guide shell, static mixer, one stage impeller and sencond stage impeller is all positioned on the axis of shaft.
Above-mentioned a kind of fine size mixing equipment, is characterized in that: the impeller diameter of described one stage impeller is equal with the impeller diameter of sencond stage impeller, and the described impeller diameter of one stage impeller and the impeller diameter of sencond stage impeller are 1/3 ~ 2/3 of staving cross-sectional diameter.
Above-mentioned a kind of fine size mixing equipment, is characterized in that: the distance between described one stage impeller and sencond stage impeller is 2/9 ~ 4/9 of staving cross-sectional diameter.
Above-mentioned a kind of fine size mixing equipment, it is characterized in that: the distance between bottom described sencond stage impeller and staving is not more than 1/3 of staving cross-sectional diameter, the lower surface of described baffle plate is lower than the lower surface of sencond stage impeller, and the quantity of described baffle plate is no less than two.
Above-mentioned a kind of fine size mixing equipment, is characterized in that: described guide cylinder is hollow inverted round stage structure, and the lower surface diameter of described guide cylinder is not less than the impeller diameter of one stage impeller.
Above-mentioned a kind of fine size mixing equipment, is characterized in that: described guide cylinder is by the bottom of many mounting rod mounting brackets, and the upper end of described mounting rod is fixed on support, and the lower end of described mounting rod is fixedly connected with the upper end outer wall of guide cylinder.
Above-mentioned a kind of fine size mixing equipment, it is characterized in that: the upper end of described guide shell is fixedly connected with by the lower end of multiple support chip with guide cylinder, the upper end of described support chip is fixedly connected with the lower end outer wall of guide cylinder, and the lower end of described support chip is fixedly connected with the upper end outer wall of guide shell.
The utility model compared with prior art has the following advantages:
1, the utility model reasonable in design, functional part is simple, embodies the feature that each assembling parts is flexible and integrated simultaneously, is easy to processing, and easy to operate.
2, the Secondary Flow cycle characteristics under different impeller action is made full use of in the utility model, using axial wheel as one stage impeller conveniently discharge currents pattern produce downward discharge capacity, radial-flow impeller is as sencond stage impeller, the coupling in flow field is realized with the discharge currents of its axle suction effect bearing shaft flow impeller, thus the homogenisation cycle effect of material in strengthening device.
3, the utility model makes full use of the strong driving flow field between two impellers, hydrostatic cutter sweep is set, while strengthening the effect of circulation homogeneous further, realize the efficient structure shearing mechanism, that is: the circulation flow pattern in the regular equipment of guide shell is relied on, stop " short circuit " phenomenon, make the Main Function region in speed strength set more obvious, the interpolation of guide shell simultaneously weakens the bad mixed zone effect bottom staving further; The mode refinement segmentation fluid relying on static mixer in hydrostatic cutter sweep to misplace superimposed produces velocity gradient, realizes the foundation of strong shear mixed cell.By the interpolation of baffle plate, coordinate the radial discharge currents of sencond stage impeller to expand medicament and mineral grain speed difference amplitude, thus be the interaction of medicament and particle, and the process overcoming energy barrier resistance or quickening absorption provides condition.
4, the utility model is in order to the more effective high current field action utilizing central area, adds the guide cylinder of hollow round table configuration, and the axle of the guide shell entrance that directly led by pan feeding on the one hand inhales flow field, prevents pan feeding short circuit; Hydrostatic cutter sweep lateral fluid is directed to guide shell entrance by the cocycle of compliant device flow field on the other hand; Meanwhile, when there is " prefloat " phenomenon in tank diameter, the bubble quickly migrate that can promote mineralising is in advance complete to discharging opening conveying.
5, the utility model fully can tackle the demand of sizing mixing of particulate, fine granule material, while sizing mixing before being suitable for " poor, thin, assorted " mineral floating, also be applicable to the process of sizing mixing of coal separation industry fine slime, be also applicable to the mixing of the industry science industry such as chemical industry, papermaking, environment, medicine widely or process of sizing mixing.
Below by drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the installation relation schematic diagram of the utility model shaft, one stage impeller and sencond stage impeller.
Fig. 4 is the structural representation of the utility model static mixer.
Description of reference numerals:
1-staving; 2-discharging opening; 3-shaft;
4-one stage impeller; 5-sencond stage impeller; 6-support chip;
7-guide shell; 8-baffle plate; 9-static mixer;
9-1-fixed mount; 9-2-centre mount; 9-3-hinged joint;
10-guide cylinder; 11-mounting rod; 12-set bolt;
13-motor; 14-support.
Detailed description of the invention
As shown in Figure 1 to Figure 3, the utility model comprises staving 1 and is arranged on the support 14 of staving 1 port, the top of described staving 1 is provided with discharging opening 2, guide cylinder 10 is provided with in described staving 1, one stage impeller 4, sencond stage impeller 5 and hydrostatic cutter sweep, described support 14 is provided with impeller drive, described guide cylinder 10 is fixedly mounted on the bottom of support 14, described one stage impeller 4, sencond stage impeller 5 and hydrostatic cutter sweep are all positioned at the below of guide cylinder 10, the static mixer 9 that described hydrostatic cutter sweep comprises guide shell 7 and is fixedly mounted in guide shell 7, described one stage impeller 4 is arranged in guide shell 7, described sencond stage impeller 5 is arranged on outside guide shell 7, described one stage impeller 4 is positioned at the top of static mixer 9, described sencond stage impeller 5 is positioned at the below of static mixer 9, the upper surface of described guide shell 7 is concordant with the upper surface of one stage impeller 4, the lower surface of described guide shell 7 is concordant with the upper surface of sencond stage impeller 5, described one stage impeller 4 is aial flow impeller, described sencond stage impeller 5 is radial flow impeller, the upper end of described guide shell 7 is fixedly connected with the lower end of guide cylinder 10, the upper surface of described guide cylinder 10 is higher than discharging opening 2, the lower surface of described guide cylinder 10 is lower than discharging opening 2, described impeller drive comprises motor 13 and shaft 3, the output shaft of described motor 13 is fixedly connected with the upper end of shaft 3, the lower end of described shaft 3 is all fixedly connected with sencond stage impeller 5 with one stage impeller 4 through after guide cylinder 10, described shaft 3 is rotationally connected with static mixer 9, described motor 13 is installed on the support 14, the lower end outside of described guide shell 7 is detachably provided with baffle plate 8, and described baffle plate 8 is fixedly connected with the inwall of staving 1.
As shown in Figure 1 and Figure 4, described static mixer 9 comprises fixed mount 9-1 and centre mount 9-2, described centre mount 9-2 is arranged in fixed mount 9-1, multiple hinged joint 9-3 is fixedly connected with between described fixed mount 9-1 and centre mount 9-2, angle between described hinged joint 9-3 and the end face of fixed mount 9-1 is 30 ° ~ 150 °, the quantity of described hinged joint 9-3 is 4 ~ 8, and the shape of described fixed mount 9-1 is circular, and described fixed mount 9-1 is fixed on guide shell 7 by set bolt 12.In conjunction with the configuration feature of turbomachine in guide shell 7, from the angle of relative motion, namely the effect of hinged joint 9-3 is carry out direct shearing course of conveying to fluid.During hinged joint 9-3 negligible amounts, can produce space on the projection surface in lamination process, impeller discharge flow can cause more by force segment fluid flow directly not have corresponding immixture by static hinged joint; Hinged joint 9-3 quantity is more, then localized micro immixture is strengthened, and velocity gradient (shear action) is strengthened; But hinged joint 9-3 quantity is too much, then the pressure drop caused is also more obvious.By the adjustment of hinged joint 9-3 different angles, form different velocity gradients and change mechanism, thus to two kinds should be had to shear machine-processed building modes, that is: hinged joint is complied with the fluid direction of motion and is directly split (angle between the end face of hinged joint 9-3 and fixed mount 9-1 is 30 ° ~ 90 °) fluid; With hinged joint reply fluid, realize fluid segmentation (angle between the end face of hinged joint 9-3 and fixed mount 9-1 is 90 ° ~ 150 °) while retardance is produced to fluid.Wherein, control hinged joint and comply with the fluid direction of motion, then hinged joint direction all produces " cutting " effect to one stage impeller 4 discharge currents, produce the scouring of storeroom, collision by crossing of different plume, utilize produce in fluid cutting, the process that crosses velocity magnitude, difference on direction to be to strengthen the effect of local velocity's gradient effect.Controlling hinged joint angle makes blade face tackle fluid, then after making liquid collision hinged joint, velocity attitude suddenlys change, thus produces larger instantaneous velocity gradient, namely relies on the instantaneous velocity gradient of strengthening fluid to realize partial cut mechanism.Whole process shear strength is adjustable, controlled, namely realizes the structure of shear action spatial cache.
In the present embodiment, the quantity of described static mixer 9 is multiple, and the quantity of described static mixer 9 is not more than four, and multiple described static mixer 9 stacks setting, and the hinged joint interval of adjacent two described static mixers 9 is arranged.The equal and opposite in direction of multiple static mixer 9, the static mixer 9 of suitable quantity can be laid according to the demand of the mixing frequency, but be not more than 4 in principle, the Pressure Drop of hydrostatic cutter sweep increases sharply with the increase of static mixer 9 quantity, if static mixer 9 is too much, then cause circulating energy not enough.Fluid is when by hydrostatic cutter sweep, and constantly in segmentation, displacement process, constantly mutual mixing, also can produce violent eddy current in section direction simultaneously.
In the present embodiment, the shape of cross section of described staving 1, guide cylinder 10 and guide shell 7 is circle, the shape of described static mixer 9 is circular, and the center of circle of described staving 1, guide cylinder 10, guide shell 7, static mixer 9, one stage impeller 4 and sencond stage impeller 5 is all positioned on the axis of shaft 3.
In the present embodiment, the impeller diameter of described one stage impeller 4 is equal with the impeller diameter of sencond stage impeller 5, and the described impeller diameter of one stage impeller 4 and the impeller diameter of sencond stage impeller 5 are 1/3 ~ 2/3 of staving 1 cross-sectional diameter.Impeller is larger, while itself manufacturing cost is higher, under same power consumption, torque ratio minor diameter impeller suffered on corresponding shaft is much higher, cause rabbling mechanism as shaft and reduction box equal loss, consume increase, corresponding running expense and equipment cost expense increase; And from the amplitude that mixing efficiency increases, impeller diameter impact is less, and major influence factors is impeller type, particularly relates to the configuration of stage impeller, the pattern that therefore preferred impeller diameter is relatively little.
In the present embodiment, the distance between described one stage impeller 4 and sencond stage impeller 5 is 2/9 ~ 4/9 of staving 1 cross-sectional diameter.The expansion of one stage impeller 4 and sencond stage impeller 5 spacing, the axial discharge capacity of one stage impeller 4 can better stretch, and is conducive to the coupling in flow field between stage impeller.
In the present embodiment, the distance between bottom described sencond stage impeller 5 and staving 1 is not more than 1/3 of staving 1 cross-sectional diameter, and the lower surface of described baffle plate 8 is lower than the lower surface of sencond stage impeller 5, and the quantity of described baffle plate 8 is no less than two.Baffle plate 8 is detachably arranged on the lower end outside of guide shell 7, and according to the discharge ability of actual shearing demand and sencond stage impeller 5, the number of baffle plate 8 can suitably increase.
In the present embodiment, described guide cylinder 10 is hollow inverted round stage structure, and the lower surface diameter of described guide cylinder 10 is not less than the impeller diameter of one stage impeller 4.Thus, effectively can limit the operating path of pan feeding, the mechanism of action making ore pulp directly enter guide shell to guide, simultaneously can provide guide effect for high liquid level fluid returns circulating path, and the discharge of the material that promoted to size mixing.
As shown in Figure 1, described guide cylinder 10 is by the bottom of many mounting rod 11 mounting brackets 14, and the upper end of described mounting rod 11 is fixing on the support 14, and the lower end of described mounting rod 11 is fixedly connected with the upper end outer wall of guide cylinder 10.
As shown in Figure 1, the upper end of described guide shell 7 is fixedly connected with the lower end of guide cylinder 10 by multiple support chip 6, and the upper end of described support chip 6 is fixedly connected with the lower end outer wall of guide cylinder 10, and the lower end of described support chip 6 is fixedly connected with the upper end outer wall of guide shell 7.
Operation principle of the present utility model is: when adopting the utility model to size mixing, ore pulp and medicament are introduced by guide cylinder 10, fluid, after guide shell 7 sucks, under the discharge currents of one stage impeller 4 acts on downwards, gets rid of rapidly to hydrostatic cutting zone.Fluid is that the rapid mutual collision due to plume forms the whirlpool varied in size after the cutting of hydrostatic cutter sweep, under the effect of the built-in hinged joint 9-3 of static mixer 9, namely produce the mixed mode that shunting action mode and radial immixture mode are carried out simultaneously.Owing to having the shearing force effect produced between the adjacent fluid layer of different in flow rate, for a certain fluid layer, the shearing force that the fluid layer that speed is larger than it puts on it is following current, and the shearing force that the speed fluid layer less than it puts on it is adverse current, the shearing force that therefore former fluid layer this two kinds of directions of bearing are contrary just has and forms moment and the tendency that produces whirlpool.Some whirlpools are among a small circle formed in the flow field in hydrostatic cutter sweep region thus, the fluid layer that the vortex shedding formed is original or a fluid stream enter contiguous fluid layer or a fluid stream, thus in hydrostatic cutter sweep region, mechanical energy hands on successively along descending whirlpool, in this energy transfer process, fluid maintains disorderly vortex movement.From micro-state, the pulsation of turbulent flow has the conveying effect of momentum, quality, heat, and thus, as the region that flow field energy is concentrated, hydrostatic cutter sweep region builds the flow fields pattern realizing rapid mixing.Namely under the axle suction effect of sencond stage impeller 5, impeller action region is entered by the fluid of hydrostatic cutter sweep, under the effect of radial discharge currents, the baffle plate 8 of " integration " is coordinated again to experience shear action, strengthen particulate, the surface cleaning of fine granule material and the effect with medicament thus, realize the process such as upgrading, activation further.Under the rectified action of staving 1, formed upwards, the circulating path of downward two bursts of high Turbulent Kinetic: the rectification of downward discharge currents at the bottom of bucket wall and bucket, entrainmented by impeller in bottom land center and return impeller, form lower circulation, simultaneously due to the coupling of stage impeller, lower circular flow is strengthened, and coordinates the effect of guide shell 7 effectively can weaken the impact of bad mixed zone.Its axial stream of plume upwards acts near liquid level and transfers radial flow effect gradually to, under the effect of guide cylinder 10, does not complete the fluid of sizing mixing and is directed to guide shell 7 entrance, reenter circulation shear mechanism outside hydrostatic cutter sweep; Complete the fluid of sizing mixing then to discharge through discharging opening 2, because the upper surface of guide cylinder 10 is higher than discharging opening 2, the lower surface of guide cylinder 10, lower than discharging opening 2, therefore guarantees that supplied materials enters flow field mechanism of action, avoids pan feeding directly to discharge with circulation movement through discharging opening 2 and cause short circuit.
In sum, a kind of fine size mixing equipment of the utility model, build the high current field areas between two impellers by the discharge currents of one stage impeller in stage impeller 4 and the axle suction effect of sencond stage impeller 5, the effect of guide shell 7 regular equipment Inner eycle flow pattern in addition, circulation flow field velocity is comparatively balanced.The synergy of the hydrostatic cutter sweep utilizing static mixer 9 to form and sencond stage impeller 5 and baffle plate 8, achieve stable shear action region, especially it is more even that the hydrostatic cutter sweep between stage impeller makes the shearing rate between two impellers distribute, shear machining function obviously regional, and zone leveling shear strength significantly improves, different scale eddy current is superimposed formation turbulent flow therebetween, thus realize corresponding physical quantity and (comprise momentum, quality, heat etc.) pulsation conveying effect, be conducive to the scouring between mineral grain, collision, the abundant dispersion of medicament, and the effect etc. of ore particle and medicament.The interpolation of guide cylinder 10 makes circulating path be able to effective restriction, has stopped " short circuit " phenomenon that material does not experience flow field effect, as long as namely must experience bulk circulation through 10, guide cylinder and shear the effect of mechanism.Form circulation flow field and the Field Characteristics of special shear action region phase compound in equipment thus, be preprocessing process of sizing mixing and suitable circulation and shear action are provided, and rational space shear intensity distribution; Meanwhile, static mixer 9 and the flexible configuration of baffle plate 8 are also for promoting shear action spatial cache provides guarantee further.
Application example below for adopting a kind of fine size mixing equipment of the utility model to size mixing:
Because the utility model shears machine-processed building mode according to static mixer built-in hinged joint and the angle between fixed mount end face different corresponding two kinds, that is: hinged joint blade is complied with the fluid direction of motion and is directly split (hereinafter referred to as " tangent " configuration) fluid; With hinged joint reply fluid, realize fluid segmentation (hereinafter referred to as " against cutting " configuration) while retardance is produced to fluid, therefore in embodiment, a kind of fine size mixing equipment action effect of this two profiles formula is enumerated simultaneously, contrast with the action effect of common tank diameter of sizing mixing.
Choosing the high magnesium collophane in Yunnan is that research object carries out sorting mineral test, and original ore size-0.074mm accounts for 90%, belongs to typical fine particle separation, and experiment process adopts one section of reverse flotation.Reverse flotation carbonate collecting agent adopts YP2-3, and phosphoric acid salt inhibitor adopts mixture of sulfuric phosphoric acid, doubles as slurry pH adjusting agent simultaneously.With reference to on-the-spot dosing in experiment, fixing nitration mixture consumption in floatation process is sulfuric acid 6kg/t, phosphoric acid 3kg/t; Collecting agent YP2-3 consumption is 3.3kg/t; The stirring time of sizing mixing adding nitration mixture in experiment process is 5min, and the stirring time of sizing mixing adding YP2-3 is 3min, and raw ore forms concentrate and tailings after reverse flotation.
Illustration one: flotation time is tested
Using normal agitation groove, " tangent " configuration, " against cutting " configuration as size mixing equipment, complete after sizing mixing under the prerequisite that dosing is identical with the corresponding time of sizing mixing, the XFD type single-trough flotating machine that groove holds for 1.5L carries out the screening test of 2min, 4min, 6min, 8min tetra-flotation time levels, and separation results is as shown in table 1.
Phosphate rock floating index corresponding after the different size mixing equipment effect of table 1
Flotation 6min ~ 8min, P corresponding after the effect of normal agitation groove
2o
5the rate of recovery continues the downward trend kept to a certain degree, corresponding P
2o
5the rate of recovery is reduced to less than 90%.And proceeding along with floatation process, in concentrate, the removal efficiency of MgO but no longer significantly improves, and its grade maintains about 0.91%, fails to reach the standard of 0.80% of qualified products requirement.The effect of sizing mixing of a kind of fine size mixing equipment of two profiles formula is all better than normal agitation groove, corresponding floatation process close to terminal, P
2o
5rate of recovery downward trend reduces, corresponding P
2o
5the rate of recovery, all about 90%, is given prominence to the flotation effect that " tangent " configuration is corresponding especially, under in concentrate, MgO grade is effectively reduced to the prerequisite of less than 0.80%, and P
2o
5the rate of recovery up to 91.33%, relative to normal agitation groove P
2o
5the rate of recovery improves 4.84 percentage points.
Illustration two: time conditions of sizing mixing is tested
Represent using " tangent " configuration as a kind of application of fine size mixing equipment, carry out the exploratory experiment of time of sizing mixing with normal agitation groove.Dosing still immobilizes by above-mentioned illustration one, and the time of sizing mixing of nitration mixture gets 2min and 5min two levels; The time of sizing mixing of collecting agent YP2-3 gets 1min, 2min, 3min tri-levels, and experimental result is as shown in table 2.
Table 2 difference stirs time of the sizing mixing result of the test under machining function
1) nitration mixture is sized mixing the impact of time on separating effect
Adopt normal agitation groove, shorten nitration mixture and size mixing the time, then cause P
2o
5the rate of recovery obviously declines, and fall is at about 6 percentage points; Meanwhile, concentrate P
2o
5grade also decreases, and MgO grade is up to 1.50%, and beyond the quality standard of qualified products, the phenomenon of wretched insufficiency also appears in the removal efficiency of MgO.A kind of fine size mixing equipment of application " tangent " configuration, nitration mixture is sized mixing time 2min, P
2o
5the rate of recovery declines 1.31 percentage points; P in concentrate
2o
5though grade slightly reduces, but still close to 30%, wherein the grade of MgO reaches 0.87%, a little more than the product achievement level of 0.80%.
Relative to adopting the action effect that normal agitation groove is corresponding, " tangent " configuration is less by the impact of the time of sizing mixing.Illustrate that same nitration mixture is sized mixing under the time, " tangent " configuration is relative to normal agitation groove, and its efficiency of sizing mixing is higher.
2) collecting agent is sized mixing the impact of time on separating effect
Under the effect of normal agitation groove, the collecting agent time of sizing mixing needs 2min just can reach its effect of sizing mixing accordingly.Application " tangent " configuration, sizes mixing in the change procedure of 1min ~ 3min at collecting agent, and corresponding separation index amplitude of variation is little, illustrates that employing " tangent " configurational energy makes collecting agent link of sizing mixing reach effect of sizing mixing accordingly fast.Relative to normal agitation groove, adopt " tangent " configuration realize fast in the effect of sizing mixing of collecting agent with the obvious advantage.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solutions of the utility model.
Claims (10)
1. a fine size mixing equipment, it is characterized in that: comprise staving (1) and be arranged on the support (14) of staving (1) port, the top of described staving (1) is provided with discharging opening (2), guide cylinder (10) is provided with in described staving (1), one stage impeller (4), sencond stage impeller (5) and hydrostatic cutter sweep, (14) are provided with impeller drive to described support, described guide cylinder (10) is fixedly mounted on the bottom of support (14), described one stage impeller (4), sencond stage impeller (5) and hydrostatic cutter sweep are all positioned at the below of guide cylinder (10), described hydrostatic cutter sweep comprises guide shell (7) and is fixedly mounted on the static mixer (9) in guide shell (7), described one stage impeller (4) is arranged in guide shell (7), described sencond stage impeller (5) is arranged on guide shell (7) outward, described one stage impeller (4) is positioned at the top of static mixer (9), described sencond stage impeller (5) is positioned at the below of static mixer (9), the upper surface of described guide shell (7) is concordant with the upper surface of one stage impeller (4), the lower surface of described guide shell (7) is concordant with the upper surface of sencond stage impeller (5), described one stage impeller (4) is aial flow impeller, described sencond stage impeller (5) is radial flow impeller, the upper end of described guide shell (7) is fixedly connected with the lower end of guide cylinder (10), the upper surface of described guide cylinder (10) is higher than discharging opening (2), the lower surface of described guide cylinder (10) is lower than discharging opening (2), described impeller drive comprises motor (13) and shaft (3), the output shaft of described motor (13) is fixedly connected with the upper end of shaft (3), the lower end of described shaft (3) is all fixedly connected with sencond stage impeller (5) with one stage impeller (4) afterwards through guide cylinder (10), described shaft (3) and static mixer (9) are rotationally connected, described motor (13) is arranged on support (14), the lower end outside of described guide shell (7) is detachably provided with baffle plate (8), described baffle plate (8) is fixedly connected with the inwall of staving (1).
2. according to a kind of fine size mixing equipment according to claim 1, it is characterized in that: described static mixer (9) comprises fixed mount (9-1) and centre mount (9-2), described centre mount (9-2) is arranged in fixed mount (9-1), multiple hinged joint (9-3) is fixedly connected with between described fixed mount (9-1) and centre mount (9-2), angle between the end face of described hinged joint (9-3) and fixed mount (9-1) is 30 ° ~ 150 °, the quantity of described hinged joint (9-3) is 4 ~ 8, the shape of described fixed mount (9-1) is circular, described fixed mount (9-1) is fixed on guide shell (7) by set bolt (12).
3. according to a kind of fine size mixing equipment according to claim 2, it is characterized in that: the quantity of described static mixer (9) is multiple, the quantity of described static mixer (9) is not more than four, multiple described static mixer (9) stacks setting, and the hinged joint interval of adjacent two described static mixers (9) is arranged.
4. according to a kind of fine size mixing equipment according to claim 1, it is characterized in that: the shape of cross section of described staving (1), guide cylinder (10) and guide shell (7) is circle, the shape of described static mixer (9) is circular, and the center of circle of described staving (1), guide cylinder (10), guide shell (7), static mixer (9), one stage impeller (4) and sencond stage impeller (5) is all positioned on the axis of shaft (3).
5. according to a kind of fine size mixing equipment according to claim 4, it is characterized in that: the impeller diameter of described one stage impeller (4) is equal with the impeller diameter of sencond stage impeller (5), the impeller diameter of described one stage impeller (4) and the impeller diameter of sencond stage impeller (5) are 1/3 ~ 2/3 of staving (1) cross-sectional diameter.
6. according to a kind of fine size mixing equipment according to claim 4, it is characterized in that: the distance between described one stage impeller (4) and sencond stage impeller (5) is 2/9 ~ 4/9 of staving (1) cross-sectional diameter.
7. according to a kind of fine size mixing equipment according to claim 4, it is characterized in that: the distance between described sencond stage impeller (5) and staving (1) bottom is not more than 1/3 of staving (1) cross-sectional diameter, the lower surface of described baffle plate (8) is lower than the lower surface of sencond stage impeller (5), and the quantity of described baffle plate (8) is no less than two.
8. according to a kind of fine size mixing equipment according to claim 4, it is characterized in that: described guide cylinder (10) is hollow inverted round stage structure, the lower surface diameter of described guide cylinder (10) is not less than the impeller diameter of one stage impeller (4).
9. according to a kind of fine size mixing equipment according to claim 1, it is characterized in that: described guide cylinder (10) is by the bottom of many mounting rods (11) mounting bracket (14), the upper end of described mounting rod (11) is fixed on support (14), and the lower end of described mounting rod (11) is fixedly connected with the upper end outer wall of guide cylinder (10).
10. according to a kind of fine size mixing equipment according to claim 1, it is characterized in that: the upper end of described guide shell (7) is fixedly connected with by the lower end of multiple support chip (6) with guide cylinder (10), the upper end of described support chip (6) is fixedly connected with the lower end outer wall of guide cylinder (10), and the lower end of described support chip (6) is fixedly connected with the upper end outer wall of guide shell (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970801.0U CN205146121U (en) | 2015-11-28 | 2015-11-28 | Particulate material size mixing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520970801.0U CN205146121U (en) | 2015-11-28 | 2015-11-28 | Particulate material size mixing equipment |
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| CN205146121U true CN205146121U (en) | 2016-04-13 |
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| CN201520970801.0U Expired - Fee Related CN205146121U (en) | 2015-11-28 | 2015-11-28 | Particulate material size mixing equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327646A (en) * | 2015-11-28 | 2016-02-17 | 西安科技大学 | Mixing pretreatment equipment for fine-particle material slurry mixing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327646A (en) * | 2015-11-28 | 2016-02-17 | 西安科技大学 | Mixing pretreatment equipment for fine-particle material slurry mixing |
| CN105327646B (en) * | 2015-11-28 | 2018-02-23 | 西安科技大学 | Fine is sized mixing with mixing pre-processing device |
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