A uniform feeding system for CCD counter-current washing flocculant

Abstract

The present invention discloses a CCD countercurrent washing flocculant uniform feeding system, including a settling tank, a forced dilution pump, a secondary flocculant tube with a feed channel extending into the pump outlet on the feed channel for injecting the diluent into the feed channel and mixing with the material; the flocculant tube is embedded between the forced dilution pump outlet and the feed channel; the number of secondary flocculant tubes is multiple. The CCD countercurrent washing flocculant uniform feeding system provided by the invention, shocks the flocculant tubes by inserting secondary flocculant tubes in each direction between the forced dilution pump outlet, and the injection level with kinetic energy impact.

Description

[0001] Description

[0002] A UNIFORM FEEDING SYSTEM FOR CCD COUNTER-CURRENT WASHING FLOCCULANT

[0003] Technical Field

[0004] The invention relates to the technical field of CCD counterflow washing flocculant addition, speci fically to a CCD counterflow washing flocculant uni form feeding system .

[0005] Background Technology

[0006] CCD reverse washing process , also known as counter-current washing ( Counter-Current Decantation, CCD) , is a solid-liquid separation technology widely used in industry . It is mainly used to improve the washing ef ficiency, especially in the field of laterite nickel ore hydrometallurgy . This process separates the solid phase and the liquid phase by flushing the material upstream through continuous fluid, using the di f ference of the speci fic gravity of the solid phase in the separation process and the impact force of the washing liquid on the material , to improve the washing ef ficiency and recovery rate . In the existing process , flocculant is needed to add flocculant to the settlement tank . Generally, multiple adding point flocculant pipelines are used for multi-point inj ection . For example , the secondary dilution multipoint dosing system and its use method, including secondary dilution system, annular distribution tube and multiple inclined short filling tube with the same structure ; the secondary dilution system includes dissolution pool , dispensing valve , reagent pool , maintenance valve , metering pump, reagent pipe , first flow meter, frequency converter, pressure water pipe , water supply valve and second flow meter .

[0007] For the existing technology, there are also the following problems : diluted flocculant each add point amount is estimated to adj ust the opening of the valve , there is no accurate data, and the original j oin point flocculant pipeline design for DN80 pipeline , pipeline coarse , because the amount of flocculant is small , the valve opening adj ustment is very di f ficult to control , in the actual production process often flocculant to add uneven or happen .

[0008] Summary

[0009] The purpose of the present invention is to overcome the above technical shortcomings and propose a CCD countercurrent washing flocculant uni form feeding system, to solve the technical problem of uneven or unequal flocculant addition in the actual production process of the prior technology .

[0010] To achieve the above technical obj ectives , the present invention adopts the following technical solutions :

[0011] The present invention provides a CCD countercurrent washing flocculant uni form feeding system, comprising :

[0012] A settlement tank on which a steady flow cylinder is provided with a feed channel extending to the steady flow cylinder ;

[0013] Forced dilution pump with an outlet set on the feed channel for inj ecting the diluent into the feed channel and mixing with the material ;

[0014] The flocculant embedded between the forced dilution pump outlet and the feed channel ; and

[0015] The number of the secondary flocculant tubes , a number of the secondary flocculant tubes are set along the inner circle of the flocculant tube and the secondary flocculant tubes match their inner diameter for use below the inj ection liquid level where the flocculant has a kinetic energy impact .

[0016] In some embodiments , the embedded positions of the flocculant main and the secondary flocculant tubes are vertical , the flocculant head and the secondary flocculant tubes are DN40 pipes or DN50 pipes , the flocculant head and the secondary flocculant tubes are connected through a screw pump, and the flocculator head and the secondary flocculant tubes are provided with a flow meter .

[0017] In some embodiments , the amount of the flocculant charge is one with the bottom end inserted and extended into the bottom flow position of the forced dilution pump outlet and located at the intersection of the feed channel and the steady flow cylinder for flocculant inj ection at the overflow mixing of the forced dilution pump outlet outlet with the steady flow tube . In some embodiments , the number of the secondary flocculant tubes is two , one of the flocculant head and the two secondary flocculant tubes are triangular in the inner circle of the steady flow tube for flocculant inj ection .

[0018] In some embodiments , one of said flocculant tubes and two of said secondary flocculant tubes insert below the lower depth, starting with the flocculant tubes .

[0019] In some embodiments , the insertion depth of the flocculant head from the upper edge of the feed channel is 15cm, the insertion depth of one of the secondary flocculant tubes is 10cm higher than the insertion depth of the flocculant head, and the insertion depth of the secondary flocculant tube is 5cm higher than the insertion depth of the flocculant main .

[0020] In some embodiments , the number of the feed channels is two and the flocculant main is embedded in the forced dilution pump outlet and located in the feed channel for inj ecting flocculant at the material mix of the forced dilution pump outlet with the feed channel .

[0021] In some embodiments , the number of secondary flocculant tubes is five , five are secondary flocculant tubes uni formly distributed in the steady flow tube .

[0022] In some embodiments , the spacing angle of the five secondary flocculant tubes in the inner circle distribution of the steady flow tube is 60 ° .

[0023] In some embodiments , the proportion of flocculant additions of the two flocculant executives and five of the five secondary flocculant tubes decreases gradually .

[0024] Compared with the prior art , the CCD countercurrent washing flocculant uni form feeding system provided by the present invention provides secondary flocculant tubes through the flocculant by embedded in the outlet of the forced dilution pump and the ratio control , and each flocculant inj ection tube is impacted into the material interior and fully mixed with the internal material .

[0025] Brief Description Of The Drawings

[0026] FIG . 1 is a top-view structure diagram of a CCD countercurrent washing flocculant uni form feeding system provided by an embodiment of the present invention;

[0027] FIG . 2 is a local top-view structure diagram of a CCD countercurrent washing flocculant uniform feeding system provided by an embodiment of the present invention;

[0028] FIG. 3 is a partial positive profile structure diagram of a CCD countercurrent washing flocculant uniform feeding system provided by an embodiment of the present invention;

[0029] FIG. 4 is a top-view structure diagram of a CCD countercurrent washing flocculant uniform feeding system provided by another embodiment of the present invention;

[0030] FIG. 5 is a local top-view view of a CCD countercurrent washing flocculant uniform feeding system provided in another embodiment of the present invention.

[0031] In the attached drawings: 1, settlement tank; 101, steady flow cylinder; 102, feed channel; 2, forced dilution pump; 3, flocculant supervisor; 4, secondary flocculant pipe; 401, screw pump; 402, flocculant supply tank; 403, flow meter.

[0032] Detailed Description Of Preferred Embodiments

[0033] In order to clarify the objectives, technical scheme and advantages of the invention, the invention is further explained in detail in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only to explain the invention and are not to define the invention.

[0034] In order to solve the technical problems of the uneven or not added, the invention provides a CCD countercurrent washing flocculant uniform feeding system, can realize the flocculant with kinetic energy impact injection, is conducive to and the internal material mixing, and multipoint to add flocculant , with proportional control, make the flocculant to promote material flocculation.

[0035] It should be noted that the CCD countercurrent washing flocculant uniform feeding system described in the present invention is used for but not limited to wet smelting nickel production process, for the convenience of explanation, the CCD countercurrent washing flocculant uniform feeding system, and the CCD countercurrent washing flocculant uniform feeding system applied in other industrial production is the same.

[0036] Referring to FIG. 1, a structural diagram of the CCD countercurrent washing flocculant uniform feeding system in an embodiment of the present invention, the CCD countercurrent washing flocculant uni form feeding system includes a settlement tank 1 , a forced dilution pump 2 , a flocculant head 3 , and a secondary flocculant tube 4 . Steady flow cylinder 101 is installed on the settlement tank 1 , The settlement groove 1 is provided with a feed channel 102 extending into the steady flow tube 101 ; The outlet of the forced dilution pump 2 is provided on the feed channel 102 , For inj ecting the diluent into the feed channel 102 , Mixing with the material ; The flocculant head 3 is embedded between the outlet of the forced dilution pump 2 and the feed channel 102 ; The number of secondary flocculant tubes 4 is multiple , The plurality of the secondary flocculant tubes 4 is arranged along the inner circle of the steady flow cylinder 101 , With the flocculant manager 3 , The starting position is the insertion between the outlet of the forced dilution pump 2 and the feed channel 102 , Flocculant inj ection mode around the uni form distribution point in the entire steady flow tube 101 , The addition of flocculant , With proportional control , Make the flocculant better promote the material flocculation, And the flocculant inj ection flow of the flocculant head 3 and the secondary flocculant tube 4 matches its inner diameter, Below the inj ection level for flocculants with kinetic impact , Inj ection of flocculants with kinetic energy shocks , Favfor mixing with internal materials . understandable , The amount of diluted flocculant at each addition point is added by estimthe opening of the adj ustment valve , Without accurate data, And the original added point flocculant pipeline is designed as DN80 pipeline , Rough pipeline , Due to the small amount of flocculant added, Valve opening adj ustment is very di f ficult to control , In the actual production process , flocculant is often uneven or not added, For a more accurate quanti fication, Scale the inner diameter of each flocculer, Combined with the inj ection flow of the flocculant , Under the matching of the pipe inner diameter and the flocculant inj ection flow rate , Due to the reduced tube diameter, Flow is unchanged, Will thus prompt increase the inj ection flow rate of flocculant , Thus forming a kinetic energy shock, The inj ection of kinetic energy shocks , Ability to impact the flocculant into the material interior, Mixing with the internal material , It avoids the problem that the slower flow rate of the coarse flocculant can only mix with the surface material of the feed pipe .

[0037] In one embodiment , refer to FIG . 3 , the flocculant head 3 and the secondary flocculant tube 4 are a DN40 pipe or DN50 pipe for flocculant inj ection matched to a smaller flow, the flocculant head

[0038] 3 and the secondary flocculant tube 4 are connected with the flocculant supply bin 402 through the screw pump 401 , pumping the flocculant to the corresponding flocculant inj ection through the flocculant tube with the flow meter 403 and the secondary flocculant tube 4 to facilitate the control of the flow meter 403 .

[0039] It is understandable that each adding point of flocculant is changed to DN40 or DN50 pipe , reducing the inner diameter of the pipe, and the flocculant pipe provided by the flocculant by the screw pump is conducive to mixing with the internal material , otherwise the flow rate of the coarse flocculant can only be mixed with the surface material of the feed pipe ; and the flowmeter 403 can add flocculant in proportion .

[0040] Further, the flocculant head 3 and secondary flocculant tube 4 embedded attitude are vertical shape , when inj ecting f locculant , the material fluid disturbance , under the disturbance , flocculant and the material fully mixed, i f add point pipe tilt , along the rotation direction of the material he will reduce uneven mixing, therefore , the inj ection tube is vertical attitude , avoid the tilt of disturbance , with the feed flow rate and flocculant impact flow rate mixing, also avoid excessive disturbance flocculant particles broken .

[0041] In one embodiment , refer to FIGS . 1 , 2 and 3 , the quantity of the head of the ant 3 is embedded and inserted into the outlet of the forced dilution pump 2 at the intersection of the feed channel 102 and the steady flow tube 101 for the overflow flow in the steady flow tube 101 in a three-point approach starting from the bottom flow of the outlet in the center tube , mainly for single channel P-DUK .

[0042] Further, the number of the secondary flocculant tubes 4 is two , one of the flocculant head 3 and the two secondary flocculant tubes

[0043] 4 are triangular in the inner circle of the steady flow tube 101 , i . e . , three inj ection points of the three-point mode for flocculant inj ection . Further, One flocculant head 3 and two secondary flocculant tubes 4 insert deep below the liquid level , Starting with the flocculant supervisor 3 , The step-down decrease , Since the material starts flocculation and settling after the addition of the flocculant supervisor 3 , The incoming thrust material rotates in the steady current cylinder 101 , The large particles after flocculation, After flocculation, the relatively small particles continue to rotate with the thrust in the steady cylinder 101 , The sinking of the heavy particles during the rotation gives the material a buoyancy up, When fine particles when gravity is less than buoyancy, At the second point , a secondary flocculant tube 4 is further added with the flocculant mixed flocculation, Flocculation o f fine particles increases the gravity subsidence , Finally, at the third j oining point , With another secondary flocculant tube 4 to flocculation the remaining very fine particles again to increase gravity subsidence , To improve the flocculant mixing ef fect , Reduce the flocculant consumption .

[0044] Speci fically, the insertion depth of the flocculator head 3 from the upper edge of the feed channel 102 is about 15cm, the insertion depth of the secondary flocculator tube 4 is about 10cm higher than the insertion depth of the flocculator head 3 , and the insertion depth of the secondary flocculator tube 4 is about 5cm higher than the insertion depth of the flocculator head 3 .

[0045] In one embodiment , refer to FIGS . 4 and 5 , the number of the feed channel 102 is two and the flocculant head 3 is embedded in the forced dilution pump 2 outlet and located within the feed channel 102 for inj ecting flocculant at the material mix between the forced dilution pump 2 outlet and the feed channel 102 for dual channel P-DUK .

[0046] Further, the number of the secondary flocculant tube 4 is five , five of the secondary flocculant tube 4 are distributed in the steady flow tube 101 , two are two forced dilution pump 2 outlet and material mixing, namely two flocculant head 3 , and the other five are five secondary flocculant tubes 4 .

[0047] Wherein, the five secondary flocculant tubes 4 are 60 ° apart in the inner circle distribution of the steady flow cylinder 101 and add a multi-point layout to better mix the material with the material .

[0048] Further, starting with the flocculant addition ratio of the two flocculant executives 3 and five of the secondary flocculant tubes 4 , gradually reduce the multi-point layout to make the material mix with the material better, and the adding ratio is gradually reduced to ef fectively add the flocculant according to the data proportion .

[0049] Understandably, the reduction of the addition ratio , according to the ratio of material grain si ze , there are 200 , 120 , 80 , and 20 items under the grain si ze of the ore pulp . For the 80 mesh sieve under the main treatment , according to the increase of the chain after mixing, the sel f-gravity increases , the subsequent material gradually settles in the rotation process , the remaining material is relatively gradually reduced, and the flocculation amount needs to be reduced, so the amount of flocculant added gradually decreases , and the reduction proportion is determined according to the particle si ze ratio of the material .

[0050] For a better understanding of the present invention, The technical scheme of the invention is described in detail with FIGS . 1 to 5 : in single channel P-DUK, Using a three-point approach, A feed channel 102 , a forced dilution pump 2 , a flocculant head 3 , and two secondary flocculant tubes 4 , One flocculant chief 3 and two secondary flocculant tubes 4 , I s distributed in the steady flow cylinder 101 , And the flocculant head 3 is located at the overflow mixture between the outlet bottom flow of the forced dilution pump 2 and the steady flow cylinder 101 ; In the-channel P-DUK, Using the seven-point addition approach, With two feeding channels 102 , two forced dilution pumps 2 , two flocculant head 3 , and five secondary flocculant tubes 4 , Add two points are two forced dilution pump 2 outlet and material mixing, Ininsert a flocculator supervisor 3 , The other five points are respectively evenly distributed according to about 60 ° angles , With a secondary flocculant tube 4 , The added proportion will be gradually reduced .

[0051] The speci fic embodiment of the present invention described above does not constitute a limitation of the protection scope of the present invention . Any other corresponding changes and deformation according to the technical idea of the invention shall be included within the protection scope of the claims of the invention .

Claims

Claims1 . A CCD countercurrent washing flocculant uni form feeding system, characteri zed by :A settlement tank on which a steady flow cylinder is provided with a feed channel extending to the steady flow cylinder ;Forced dilution pump with an outlet set on the feed channel for inj ecting the diluent into the feed channel and mixing with the material ;The flocculant embedded between the forced dilution pump outlet and the feed channel ; and the number of the secondary flocculant tubes having a number of numbers along the circumference of the inner circle of the flocculant tube and the secondary flocculant tubes match their inner diameter for use below the inj ection liquid level where the flocculant has a kinetic energy impact .2 . The CCD countercurrent washing flocculant uni form feeding system of claim 1 , wherein the flocculant main and secondary flocculant tubes are both vertical , the flocculant main and the secondary flocculant tubes are DN40 pipes or DN50 pipes , the flocculant main and the secondary flocculant tubes are connected through a screw pump, and the flocculant main and the secondary flocculant tubes are provided with a flow meter .3 . The CCD countercurrent washing flocculant uni form feeding system of claim 2 , characteri zed in the quantity of the flocculant head of a bottom end inserted and extended into the bottom flow position of the forced dilution pump outlet and at the intersection of the feed channel and the steady flow tube for flocculant inj ection at the overflow mixing of the forced dilution pump outlet bottom flow with the steady flow tube .4 . The CCD countercurrent washing flocculant uni form feeding system of claim 3 , wherein the number of the secondary flocculant tubes is two , one of the flocculant tubes and the two secondary flocculant tubes are triangular distributed in the inner circle of the steady flow tube for flocculant inj ection .5 . The CCD countercurrent washing flocculant uni form feeding system according to claim 4 , wherein one of the flocculant tubes and the two secondary flocculant tubes insert the lower depth, starting with the flocculant charge .6 . The CCD countercurrent washing flocculant uni form feeding system of claim 1 , wherein the insertion depth of the feed channel is 15cm, the insertion depth of the secondary flocculant tube is 10cm higher than the insertion depth of the flocculant tube , and the insertion depth of the secondary flocculant tube is 5cm higher than the insertion depth of the flocculator main .7 . The CCD countercurrent washing flocculant uni form feeding system of claim 2 , wherein the number of feed channels is two , the flocculant main is embedded in the forced dilution pump outlet and located in the feed channel for inj ecting flocculant at the material mix of the forced dilution pump outlet and the feed channel .8 . The CCD countercurrent washing flocculant uni form feeding system of claim 7 , wherein the number of the secondary flocculant tubes is five and the five are evenly distributed within the steady flow tube .9 . The CCD countercurrent washing flocculant uni form feeding system according to claim 8 , wherein the five secondary flocculant tubes are separated at 60 ° in the inner circle of the steady flow cylinder .10 . The CCD countercurrent washing flocculant uni form feeding system according to claim 9 , wherein the ratio of the two flocculant tubes increases .

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