The invention relates to a single channel thickener system and thickener

Abstract

The present invention discloses a single-channel thickening system and a thickener, where the single-channel thickening system comprises a cylindrical body, a trapezoidal distributing plate, and a spiral dam. The top of the cylindrical body is provided with a feed inlet along the tangential direction; the trapezoidal distributing plate is set inside the cylindrical body, located at the bottom of the cylindrical body, and forms a gap with the bottom of the cylindrical body; the spiral dam is spirally arranged along the axis of the cylindrical body, the top end of the spiral dam is connected with the feed inlet, guiding the mineral slurry vortex at a uniform speed, and overflowing downward from the spiral dam towards the axis of the cylindrical body. The present invention, by connecting the feed inlet set tangentially on the cylindrical body with the spiral dam, guides the mineral slurry vortex at a uniform speed, and causes it to overflow downward from the spiral dam towards the axis of the cylindrical body, in conjunction with the trapezoidal distributing plate below, evenly distributes the mineral slurry, achieving the purpose of uniformly entering the thickener pool at a uniform speed and flow rate, and improving the processing efficiency of the thickener.

Description

[0001] Description

[0002] THE INVENTION RELATES TO A SINGLE CHANNEL THICKENER SYSTEM AND THICKENER

[0003] Field Of The Disclosure

[0004] The invention relates to the technical field of slurry thickening, in particular to a single channel thickening system and a thickener .

[0005] Background

[0006] At present , in the hydrometallurgy of laterite nickel ore , the slurry produced by washing is usually sent to the thickener for thickening, and when its concentration reaches a certain value , it is then inj ected into the high-pressure reactor with sul furic acid and steam for smelting to extract nickel and cobalt in laterite nickel ore . In the thickening process of the thickener, the slurry needs to be imported and discharged thickly at the bottom, and the supernatant flows from the overflow weir . For example , the patent with application number CN201721530025 . 8 discloes a thickener comprises : a annular pool body in which the supernatant is accommodated; The overflow weir is provided in the annular pool body; The fine filtration unit , at least one of the fine filtration unit is arranged along the circumferential direction of the overflow weir, the fine filtration unit is provided with a liquid outlet pipe , and the fine filtration unit is communicated with the overflow weir through the liquid outlet pipe .

[0007] For the above existing technologies , most of the slurry is directly imported from the feed port . There are uneven rate , flow fluctuation and uneven distribution in the direct import of slurry . Uneven slurry import will lead to uneven load in the precipitation zone , af fecting the ef fective settlement of solid particles , thus reducing the precipitation ef ficiency and solid recovery rate . Flow fluctuation may lead to a sudden increase in slurry concentration in local areas , forming areas with high concentration, hindering particle settlement , and even forming blockage , which will lead to the reduction of sedimentation ef ficiency .

[0008] Summary

[0009] The purpose of the invention is to overcome the technical deficiency mentioned above , and a single channel thickening system and thickener are proposed to solve the technical problems of uneven rate , flow fluctuation and uneven distribution in the direct introduction of slurry in the prior art .

[0010] In order to achieve the above technical purpose , the invention adopts the following technical scheme :

[0011] On the first hand, the invention provides a single channel thickening system comprising :

[0012] Cylindrical body, the top of the cylindrical body is arranged along the tangent direction of a feeding port ;

[0013] Trapezoidal distributing plate , which is arranged in the cylindrical body, and is located at the bottom of the cylindrical body, and the bottom of the cylindrical body to form a gap ; As well as

[0014] The spiral dam is arranged spirally along the axis of the cylinder, and the top of the spiral dam is connected with the feed port , which is used to guide the slurry vortex flow to equali ze speed and overflow downward from the spiral dam toward the axis direction of the cylinder .

[0015] In some embodiment , the spiral dam starting from the feed port and spiraling in a ring layer .

[0016] In some embodiment , the inner edge of the spiral dam has a current blocking weir, and the blocking weir starts from the feed port and gradually decreases along the spiral direction .

[0017] In some embodiment , the top of the cylindrical body is provided with a flocculant adding port at a distance of at least a quarter circle from the feeding port .

[0018] In some embodiment , it also includes a rake machine , and the rake machine includes a rotating shaft and a scraper . Wherein, the rotating shaft is arranged along the axial direction of the cylindrical body and passes through the trapezoidal distributing plate . The scraper is connected with the rotating shaft , and one end is suitable for the inclined plane of the trapezoidal distributing plate . The rotating shaft is used to drive the scraper to rotate and push the excessive precipitation on the Trapezoidal distributing plate to fall from the gap .

[0019] In some embodiment , the rake machine also includes a rake frame . The rake frame is connected with the rotating shaft , and one end is in contact with the inner wall of the cylindrical body . The rotating shaft is used to drive the rake frame to rotate the precipitation from the inner wall of the cylindrical body .

[0020] In some embodiment , the rake frame is connected with the rotating shaft through the scraper and forms a V-shaped, and the V-shaped tip is inserted in the gap

[0021] In some embodiment , the bottom of the trapezoidal distributing plate is fixed to the cylinder through an extension frame .

[0022] In some embodiment , the shape of the extension frame is U- shaped .

[0023] Second, the invention also provides a thickener, including a single channel thickening system as described in any of the above .

[0024] Compared with the prior art , the single channel thickening system provided by the invention, by docking the feed port tangentially arranged on the cylinder with the spiral dam, guides the slurry vortex flow to be uni form, and overflows downward from the spiral dam toward the axis direction of the cylinder, with the trapezoidal distribution plate below, the slurry is evenly distributed, To achieve uni form speed and flow of slurry and uni form distribution into the body of the thickener pool , improve

[0025] The processing ef ficiency of the thickener, shorten the dwell time of slurry in the thickener, increase the processing capacity per unit time .

[0026] Brief Description Of The Drawings

[0027] FIG . 1 is a three-dimensional schematic diagram of a singlechannel thickening system provided by an embodiment of the invention;

[0028] FIG . 2 is a schematic diagram of the structure of a single channel thickening system provided by an embodiment of the invention;

[0029] FIG. 3 is a three-dimensional section view of a single-channel thickening system provided by an embodiment of the invention;

[0030] FIG. 4 shows another three-dimensional section view of a single-channel thickening system provided by an embodiment of the invention;

[0031] FIG. 5 is a schematic diagram of the structure of the thickener provided in an embodiment of the invention.

[0032] The appended drawings labels : 1. cylindrical body; 101. Feed port; 2. Trapezoidal distributing plate; 201. Gap; 202. Extension frame; 3. Spiral dam; 301. Damper weir; 4. Rake machine; 41. Rotating shaft; 42. Rake frame; 43. Scraper; 44. Pool harrow frame; 5. Flocculant adding port; 6. Pool body; 601. Conical surface; 602. Ore drawing port.

[0033] Detailed Description Of Preferred Embodiments

[0034] In order to make the purpose, technical scheme and advantages of the invention more clearly, the invention is further explained in detail in the following combination with the attached drawings and embodiments. It should be understood that the specific embodiment described herein are intended only to explain the invention and are not intended to qualify it.

[0035] In order to solve the technical problems of uneven rate, flow fluctuation and uneven distribution in the direct slurry introduction, the invention provides a single channel thickening system, which can realize the slurry introduction and uniform distribution at uniform speed and flow.

[0036] It should be noted that the single-channel thickening system described in the present invention is used for but not limited to the thickener of slurry thickening, etc. For the convenience of exposition, in the present invention, only the single-channel thickening system applied to the thickener of slurry thickening is taken as an example, and the principle of the single-channel thickening system applied to other types of equipment is essentially the same as that applied to the thickener of slurry thickening. We will not repeat it here.

[0037] Please refer to Figure 1 and Figure 2. Figure 1 depicts a three- dimensional schematic diagram of a single-channel thickening system in an exemplary embodiment of the present invention, while Figure 2 illustrates the structural schematic diagram of the single-channel thickening system in this embodiment. The singlechannel thickening system comprises a cylindrical body (designated as "1") , a trapezoidal distributing plate (designated to as "2") , and a spiral dam (designated to as "3") . The top of cylinder ("1") is equipped with an inlet port labeled as "101" along the tangent direction for introducing slurry at an oblique angle, generating vortex flow inside the cylinder. This vortex flow help distribute the slurry evenly across the entire cross section of the thickener, rather than concentrating at the center or a certain point, which ensures that all areas have the same treatment effect and avoids local overload or uneven treatment, vortex flows can promote the rapid downward settlement of solid particles in the slurry, especially for small particles, because vortex flows will produce shear forces. Help to destroy the aggregation state between fine particles, so that it is easier to settle. The trapezoidal distributing plate ("2") is positioned within cylindrical body ("1") at its bottom, forming gap ("201") with the bottom of cylindrical body ("1") . Its design facilitates even distribution of material upon entry into the thickener by adjusting the size of gap between trapezoidal distributing plate ("2") and inner wall bottom surface of cylinder 1 to control material thickness within it, thereby regulating settling speed and concentration efficiency The spiral dam ("3") is helically arranged along axis line on cylindrical body ("1") . Its top end interfaces with inlet port ("101") , guiding mineral slurry turbulence evenly before overflowing downward towards central axis line from spiral dam ("3") . It has the effect of buffering type to delay the high-speed direct downward injection of slurry, and it has the effect of guiding the vortex flow of the slurry by using its spiral shape. Under slow speed and vortex flow, it can promote the uniform speed of slurry, and inject downward in the way of overflow toward the center, reduce the flow fluctuation, and have the effect of uniform distribution. At the same time, it can cooperate with the trapezoidal distributing plate ("2") below to further arrange the slurry evenly. In the slurry import of the thickener, the slurry is evenly distributed into the pool body of the thickener at a uniform speed and flow, so as to improve the processing efficiency of the thickener, shorten the residence time of the slurry in the thickener, and increase the processing capacity per unit time.

[0038] In one embodiment depicted in Figures 2 and Fig.3, measures are taken to avoid excessive eddies caused by spiral dam ("3") during slurry injection process. Spiral dam ("3") starts spiraling from feed inlet port ("101") forming layered ring shape which prevents formation strong eddies that may lead to unnecessary energy loss or re-suspension already settled particles thus decreasing processing efficiency.

[0039] In this embodiment, for the thickening of slurry, a single layer of annular spiral dam ("3") can provide an effective uniform speed and flow rate purpose. However, for thickening of materials other than slurry, the number of layers of the spiral dam ("3") and its shape can be adjusted according to the characteristics of the material.

[0040] In one embodiment, as shown in Figure 3, to guide the slurry on the spiral dam ("3") evenly toward the central overflow, the inner edge of the spiral dam ("3") has a weir ("301") , and the weir ("301") starts from the inlet ("101") and gradually decreases along the spiral direction to control the overflow flow of the slurry toward the axis of the cylindrical body ("1") .

[0041] It is understandable that, since the inlet is gradually lowered from bottom to top along the spiral dam ("3") , the gradually lowered weir can control the overflow flow rate at the upper end of the spiral dam ("3") to balance with the overflow flow rate at the lower end, thereby achieving the goal of evenly overflowing slurry downward on the spiral dam ("3") .

[0042] Furthermore, the outer edge of the spiral dam ("3") is inclined toward the inner edge in the direction of the axis of the cylindrical body ("1") , and the inclination angle can guide the slurry to overflow toward the axis of the cylindrical body ("1") .

[0043] In this embodiment, the inclination angle can be appropriately increased or decreased according to the desired overflow speed.

[0044] In one embodiment, as shown in Fig. 1 and Fig. 2, to reduce the waste of flocculant and enable the slurry to react fully with the flocculant, a flocculant addition port ("5") is provided at a position at least one-quarter of the circumference away from the inlet port ("101") on the cylindrical body ("1") , because the slurry flow rate is fast and the particle speed is fast at the inlet port ("101") , it is difficult for the slurry to form large sediment particles under the action of the flocculant, which will waste a lot of flocculant. Therefore, a flocculant addition port ("5") is provided at a position one-quarter of the circumference away from the inlet port ("101") , where the slurry flow rate decreases, allowing the slurry to react better with the flocculant.

[0045] In one embodiment, as shown in Fig. 2 and Fig. 4, to avoid sediment accumulation on the triangular distributing plate ("2") and avoid blockage of the gap ("201") , the single-channel thickening system further includes a rake ("4") , the rake ("4") includes a rotating shaft ("41") and a scraper ("43") , the scraper ("43") is connected to the rotating shaft ("41") and is adapted to the inclined surface of the triangular distributing plate, and extends into the gap ("201") . When the rotating shaft ("41") drives the scraper ("43") to rotate, it pushes excess sediment on the triangular distributing plate ("2") to fall down through the gap ("201") .

[0046] It is understandable that the driving mechanism is driven to rotate the drive shaft 41, which corresponds to the rotating axis ("41") , and the driving mechanism is installed above the thickener tank body. The driving end is connected to the top of the rotating axis ("41") , used to drive the rotating axis ("41") to rotate. In this case, the driving mechanism is driven by a motor, which is a feature of the existing art and will not be elaborated further.

[0047] In one embodiment, please refer to Fig. 2 and Fig. 4, in order to avoid sediment accumulation in the cylindrical body ("1") , the rake ("4") rake frame ("42") , the rotating axis ("41") is longitudinally arranged along the cylindrical body ("1") , penetrates the trapezoidal feed plate ("2") , and the rake frame ("42") is connected to the rotating axis ("41") , and one end contacts the inner wall of the cylindrical body ("1") . The rotating axis ("41") is used to rotate the rake frame ("42") to scrape the sediment off the inner wall of the cylindrical body("l") .

[0048] In one embodiment, please refer to Fig. 2 and Fig. 4, the rake frame ("42") is fixedly connected to the rotating axis ("41") through the scraper ("43") , i.e., the scraper ("43") is fixedly connected to the rake frame ("42") , and the scraper ("43") is fixedly connected to the rotating axis ("41") , reducing the internal support usage, where the scraper ("43") serves as the connection end between the rake frame ("42") and the rotating axis ("41") , achieving both the scraping effect on the inner wall of the cylindrical body ("1") and the scraping effect on the trapezoidal distributing plate ("2") . Furthermore, after the rake frame ("42") is connected to the scraper ("43") , a V-shaped structure is formed, and the tip of the V-shaped structure is inserted into the gap ("201") , enabling effective cleaning of the clogged gap ("201") during rotation.

[0049] It is understandable that in a possible embodiment, one end of the scraper ("43") is directly fixedly connected to the rotating axis ("41") , while the other end of the rake frame ("42") is fixedly connected to the rotating axis ("41") through a support.

[0050] In one embodiment, to connect the trapezoidal distributing plate ("2") with the cylindrical body ("1") , the bottom of the trapezoidal distributing plate ("2") is fixedly connected to the cylindrical body ("1") through an extension frame ("202") , which is set inside the cylindrical body ("1") and has a gap 201 with the inner wall of the cylindrical body ("1") .

[0051] Furthermore, to adapt the structure of the scraper ("43") inserted into the gap ("201") , the shape of the extension frame ("202") is U-shaped, thus avoiding interference between the scraper ("43") and the gap ("201") when the scraper ("43") rotates inside the gap ("201") .

[0052] In order to better understand the present invention, the technical solution of the present invention will be described in detail below with reference to Figs. 1 to 4. The cylinder 1, spiral dam 3, trapezoidal distributing 2, and scraper 4 constitute a single-channel thickening system. The feed port 101 at the top of the cylinder 1 is set along a tangent direction, and under the spiral guidance of the spiral dam 3, a vortex is formed and flows downward toward the center in a surge manner, allowing the slurry to enter the cylinder 1 evenly at a constant speed and flow rate. Furthermore, the trapezoidal distributing 2 is used to distribute the slurry evenly into the thickening pool of the thickener. The additive port 5 for flocculant is located at a quarter of the circumference away from the feed port 101 on the top of the cylinder 1, where the flow rate of the slurry is reduced, allowing the flocculant to react better with the slurry. The scraper 41, driven by the rotating shaft 41, rotates the rake frame 42 and the scraper blade 43 to scrape the sediment off the inner wall of the cylinder 1 and the trapezoidal distributing 2, preventing excessive sediment accumulation in the cylinder 1 and blocking the gap .

[0053] Second, the invention also provides a bushing machine, as referred to in FIG. 5, comprising a single-channel bushing system as in any of the above embodiment.

[0054] It can be understood that the thickening machine includes the thickening pool body ("6") , the bottom of the thickening pool body ("6") is a conical surface ("601") , and the single channel thickening system is set on the central axis of the thickening pool body ("6") , which is used to carry out the dense import of the slurry toward the inner of the lower pool body, in which the thickening pool body is provided with the driving mechanism of the rake machine ("4") , which is used to drive the rotation of the rake machine ("4") , in addition, A pool body rake frame ("44") in contact with the bottom wall of the pool body is also provided on the rotation shaft ("41") of the rake machine ("4") , and the pool body rake frame ("44") is used to dresze the slurry of the dense pool body ("6") to the ore drawing port ("602") .

[0055] Above-mentioned specific embodiment do not limit scope protection Any corresponding changes variations made based technical ideas should fall under claims' protection range.

Claims

WHAT IS CLAIMED IS1 . A single channel thickening system, which is characteri zed by : cylindrical body, the top of the cylindrical body is arranged along the tangent direction of a feeding port ; Trapezoidal distributing plate , the trapezoidal distributing plate is arranged in the cylindrical body, and is located at the bottom of the cylindrical body, and with the bottom of the cylinder to form a gap ; andSpiral dam, the spiral dam is arranged spirally along the axis of the cylinder, and the top of the spiral dam is connected with the feed port , which is used to guide the slurry vortex flow to equali ze speed and overflow downward from the spiral dam toward the axis direction of the cylinder .2 . According to claim 1 , the single channel thickening system is characteri zed in that the spiral dam starts from the feed port and is spiral in a ring layer .3 . According to Claim 1 , the single channel thickening system is characteri zed in that the inner edge of the spiral dam has a current blocking weir, and the blocking weir starts from the feed port and gradually decreases along the spiral direction .4 . According to claim 1 , the single channel thickening system is characteri zed in that the top of the cylindrical body is provided with a flocculant adding port at a distance of at least a quarter circle from the feeding port .5 . According to claim 1 , the single channel thickening system is characteri zed in that it also includes a rake machine , and the rake machine includes a rotating shaft and a scraper . Wherein, the rotating shaft is arranged along the axial direction of the cylindrical body and passes through the trapezoidal distributing plate . The scraper is connected with the rotating shaft , and one end is suitable for the inclined plane of the trapezoidal distributing plate . The rotating shaft is used to drive the scraper to rotate and push the excessive precipitation on the trapezooid distributing plate to fall from the gap .

6. According to claim 5, the single channel thickening system is characterized in that the rake machine also includes a rake frame. The rake frame is connected with the rotating shaft, and one end is in contact with the inner wall of the cylindrical body. The rotating shaft is used to drive the rake frame to rotate the precipitation from the inner wall of the cylindrical body.

7. According to claim 6, the single channel thickening system is characterized in that the rake frame is connected with the rotating shaft through the scraper and forms a V-shaped, and the V-shaped tip is inserted in the gap.

8. According to Claim 1, the single channel thickening system is characterized in that the bottom of the trapezoidal distributing plate is fixed to the cylinder through an extension frame.

9. According to claim 8, the single channel thickening system is characterized in that the shape of the extension frame is U-shaped.

10. A thickener characterized in that it includes a single channel thickening system as described in either of claims 1-9.

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