Spraying device for dump leaching field

Abstract

The invention relates to a heap leaching field spraying device which comprises a spraying device and a spraying liquid circulation device, the spraying device is composed of a transition box, a shunt pipe, a liquid inlet pipe, a spraying pipe and a spraying end, a cathode panel is fixed on the lower side of a transition end cover on the transition box, and an anode bar is fixed in a sealing end cover of the liquid inlet pipe; the spray liquid circulating device comprises a treatment box, a return pipe and a drain pipe, a current collection rod is fixed on a mounting panel sleeved with a rear port of the return pipe, a first water pumping impeller is arranged on the upper side of the mounting panel, a second water pumping impeller is arranged in the treatment box, and a current collection panel and a cathode electrolysis rod are arranged on the middle upper part of a front end cover in front of the treatment box; the metal content in the spraying liquid is reduced in an electrolysis mode, an electric field is formed between the anode bar and the cathode panel through positive feedback in the electrolysis process, metal cations and cyanide anions are further promoted to be separated in the liquid inlet pipe, and the influence of the metal cations on the spraying effect is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of gold ore dressing equipment, and in particular relates to a heap leaching field spraying device. Background Art

[0002] At present, the cyanidation method is mainly used in gold production in my country. According to the grade of gold ore, high-grade ore is recovered by leaching process, while low-grade ore is usually piled up in heap leaching field to reduce the consumption of cyanide and improve the economy of gold recovery. Gold is recovered by spraying cyanide. The cyanide precious liquid produced after spraying gold in the heap leaching field contains associated gold minerals, such as dissolution reactions of copper minerals, iron minerals, arsenic minerals, lead minerals, etc., and impurity ions such as copper, zinc, iron, arsenic, etc. When the cyanide solution is used to recover gold in a circular manner, the dissolution reactions of copper minerals, iron minerals, arsenic minerals, lead minerals, etc. and impurity ions such as copper, zinc, iron, arsenic, etc. will continue to accumulate and enrich in the cyanide solution, which will affect the spray leaching of gold and silver in the minerals. In order to avoid the above problems, it is very necessary to separate the impurity ions such as copper, zinc, iron, arsenic, etc. before the cyanide precious liquid is recycled.

[0003] Electrolytic treatment of the cyanide solution can effectively reduce the content of impurity ions, avoid the accumulation and enrichment of impurity ions, and ensure the effectiveness of gold recovery by cyanide spraying. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a heap leaching field spraying device to solve the above problems. To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A heap leaching field spraying device, comprising two symmetrically arranged spraying devices and a circulation device connecting the two spraying devices, the spraying device comprising:

[0006] A transition box, which has an upper interface on the top, a lower interface on the bottom, and a side interface on the side; a transition end cover detachably connected to the upper interface, the outer periphery of the transition end cover is provided with anti-slip patterns, and the lower part thereof extends to form a cathode panel inserted into the transition box;

[0007] A flow divider pipe sleeved in the transition end cover, a plurality of flow divider holes are circumferentially provided at the lower part of the flow divider pipe, and an annular flow channel is formed between the outer side of the pipe wall and the transition end cover;

[0008] A four-way liquid inlet pipe is arranged at the top of the shunt pipe, and a sealing cover and an anode rod are arranged through the top of the liquid inlet pipe;

[0009] The spray assembly connected to the lower interface includes a spray pipe threadedly connected to the transition box and a spray end head arranged at the end of the spray pipe, and the top of the spray pipe is provided with a conical flow guide cover inserted into the diverter pipe;

[0010] The circulation device is connected to the side interfaces of the two spray devices respectively through a connecting transverse pipe to form a closed circulation loop.

[0011] Furthermore, a detachable connection structure is formed between the transition end cover and the upper interface, between the shunt pipe and the transition end cover, and between the spray pipe and the lower interface through threaded cooperation; the axis of the cathode panel is coaxially arranged with the axis of the shunt pipe, and the inner diameter of the cathode panel is larger than the outer diameter of the shunt pipe to form the annular flow channel.

[0012] Furthermore, the conical flow guide cover is a trumpet-shaped structure that is narrow at the top and wide at the bottom, and its maximum outer diameter is equal to the inner diameter of the shunt tube, and forms a gap fit with the inner wall of the shunt tube; the anode rod extends vertically from the top of the liquid inlet tube to the inside of the shunt tube, and its end forms an electrochemical reaction space with the cathode panel.

[0013] Furthermore, the circulation unit comprises:

[0014] The left and right side walls of the treatment box are connected to the side interfaces of the two spraying devices through the connecting horizontal pipes;

[0015] The reflux pipe is horizontally arranged in the treatment box, the front section of which is a closed pipe body with a circumferentially arranged flow diversion hole, and the rear section forms an expanded diameter portion and is fixed at the rear interface of the treatment box through a threaded connection;

[0016] A mounting panel embedded in the expanded diameter portion, the surface of the mounting panel is provided with a filter hole array connected to the return drain pipe, and the center of the mounting panel is fixedly connected to a collector rod extending into the return pipe;

[0017] A driving shaft coaxially passing through the mounting panel, a front section of which is fixed with a first impeller located in the return pipe, and a rear section of which extends to the outside of the processing box and is connected to a driving motor;

[0018] The electrolytic assembly arranged at the front end of the processing box comprises a front end cover connected by threads, a cathode electrolytic rod fixed to the inner wall of the front end cover, and a current collecting panel;

[0019] A second impeller is provided between the first impeller and the driving shaft, and the current collecting panel forms an electrical connection loop with the anode rod through a conducting wire.

[0020] Furthermore, a stepped limiting boss is provided on the inner wall of the enlarged diameter portion of the reflux pipe, and the mounting panel is fixed to the limiting boss by crimping the end surface of the reflux drain pipe.

[0021] Furthermore, an electrolytic reaction chamber is formed between the cathode electrolytic rod and the collector rod, and the output end of the drive motor is connected to the drive shaft through a coupling, and the coupling is nested inside the bent portion of the drain pipe.

[0022] Furthermore, the cathode panel is connected to the collector rod via a wire, an insulating layer is provided on the surface of the driving shaft, and an insulating layer is provided between the front end cover and the collector panel.

[0023] The beneficial effects of the present invention are as follows: during the spray heap leaching of the gold mine of the present invention, after the spray liquid in the liquid inlet pipe enters the shunt pipe, under the shunting effect of the shunt baffle, the spray liquid in the shunt pipe near the axis area enters the spray pipe and is directly sprayed out from the spray end, while the mixed liquid near the side wall area of ​​the shunt pipe is blocked by the shunt baffle and enters the transition box from the side through hole near the lower end of the shunt pipe, and then enters the treatment box through the connecting cross pipe for electrolysis; during the electrolysis process, the metal cations and the anions in the solution move to the cathode and the anode respectively, so as to achieve the purpose of separating the metal cations from the spray liquid, and avoid metal enrichment when the spray liquid is recycled; and during the electrolysis process, when the cathode electrolysis rod is used to electrolyze the mixed liquid, The collector rod obtains electrons from the anions in the mixed liquid and transfers them to the cathode panel through the wire. The electrons on the anode rod are transferred to the collector panel through the wire, causing the anode rod to lose electrons. An electric field is formed between the anode rod and the cathode panel. Under the action of the electric field, the anions and metal cations in the mixed liquid in the liquid inlet pipe are subjected to forces in opposite directions during the flow. The cyanide anions in the mixed liquid gather in the axial area of ​​the liquid inlet pipe and then enter the spray pipe, while the metal cations move to the side wall area of ​​the liquid inlet pipe, that is, positive feedback is formed when the cathode electrolysis rod is used to electrolyze the mixed liquid, so that an electric field is formed between the anode rod and the cathode panel, which further promotes the separation of metal cations and cyanide anions in the liquid inlet pipe and reduces the influence of metal cations on the spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view structural diagram of the heap leaching spray device;

[0025] Figure 2 This is a front view structural diagram of the spray device;

[0026] Figure 3 This is the internal structure diagram of the spray device;

[0027] Figure 4 This is the structure diagram of the shunt pipe;

[0028] Figure 5 This is the structure diagram of the spray pipe;

[0029] Figure 6 This is the structural diagram of the transition end cover;

[0030] Figure 7 This is a top view of the structure of the spray liquid circulation device;

[0031] Figure 8 This is the internal structure diagram of the spray liquid circulation device;

[0032] Fig. 9 This is the internal structure diagram of the reflux pipe;

[0033] Numbers in the figure: 1 spray device; 2 spray liquid circulation device; 3 connecting cross pipe; 4 transition box; 5 diversion pipe; 6 liquid inlet pipe; 7 spray pipe; 701 diversion baffle; 8 spray end; 9 transition end cover; 901 cathode panel; 10 sealing end cover; 1001 anode rod; 11 treatment box; 12 return pipe; 13 drain pipe; 14 installation panel; 15 return drain pipe; 16 collector rod; 17 first pumping impeller; 18 second pumping impeller; 19 driving shaft; 20 front end cover; 21 cathode electrolytic rod; 22 driving motor; 23 collector panel. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0035] like Figure 1-9As shown, a heap leaching field spraying device comprises two spraying devices 1 and a spray liquid circulation device 2 arranged between the two spraying devices 1. The spraying device 1 is connected with the spray liquid circulation device 2 through a connecting transverse pipe 3. The spraying device 1 is composed of a transition box 4, a shunt pipe 5, a liquid inlet pipe 6, a spray pipe 7 and a spray end 8. The transition box 4 is provided with an upper interface, a lower interface and a side interface. A transition end cover 9 is provided above the upper interface of the transition box 4. The shunt pipe 5 is sleeved in the transition end cover 9. A convex portion is provided in the middle of the transition end cover 9. The convex portion of the transition end cover 9 has a side surface. Anti-skid patterns are provided, threads are provided on the lower side of the transition end cover 9, the threads of the transition end cover 9 are matched and fixedly connected with the threads of the upper interface of the transition box 4, a cylindrical cathode panel 901 is fixed on the lower side of the transition end cover 9, the cathode panel 901 is inserted into the transition box 4, and the axis of the cathode panel 901 coincides with the axis of the shunt pipe 5, the lower end of the shunt pipe 5 is inserted into the transition box 4, a raised portion is provided on the upper end of the shunt pipe 5, and anti-skid patterns are provided on the side of the raised portion of the shunt pipe 5, threads are provided near the upper side of the shunt pipe 5, the threads of the shunt pipe 5 are matched and fixedly connected with the threads of the transition end cover 9, and the shunt pipe The side surface near the lower end of 5 is evenly distributed with side through holes connected with the transition box 4, and the spray pipe 7 is inserted into the transition box 4 from the lower interface. A convex portion is provided near the lower end of the spray pipe 7, and the side surface of the convex portion of the spray pipe 7 is provided with anti-slip patterns, and the spray pipe 7 is provided with threads on both sides of the upper side of the convex portion. The threads on the upper side of the convex portion of the spray pipe 7 are matched and fixedly connected with the threads of the lower interface of the transition box 4, and the threads on the lower side of the convex portion of the spray pipe 7 are matched and fixedly connected with the threads of the spray end 8. The upper end of the spray pipe 7 contacts the lower end of the diverter pipe 5, and the upper end of the spray pipe 7 is provided with a diverter baffle 701, which divides The upper port of the flow baffle 701 is small and the lower port is large, and the lower edge of the diverter baffle 701 is fixedly connected to the upper edge of the spray pipe 7, and the diverter baffle 701 is inserted into the diverter pipe 5. A liquid inlet pipe 6 is arranged above the diverter pipe 5, and the liquid inlet pipe 6 is provided with four interfaces of upper, lower, left and right, and the lower interface of the liquid inlet pipe 6 is fixedly connected with the upper end port of the diverter pipe 5 by threaded cooperation, and a sealing end cover 10 is fixedly provided on the upper interface of the liquid inlet pipe 6 by threaded cooperation, and an anode rod 1001 is fixed in the sealing end cover 10, and the anode rod 1001 passes through the lower interface of the liquid inlet pipe 6, and the anode rod 1001 is inserted into the diverter pipe 5.

[0036] In this embodiment, the spray liquid circulation device 2 includes a treatment box 11, a return pipe 12, and a drain pipe 13. The treatment box 11 is provided with four interfaces, namely, front, rear, left, and right. The left and right interfaces of the treatment box 11 are respectively connected to the connecting cross pipes 3 on both sides. The treatment box 11 is provided with a return pipe 12 with a sealed front end and an open rear end. The return pipe 12 is provided with a protrusion near the rear end, and the side of the return pipe 12 near the rear end protrusion is provided with a thread for fixed connection with the thread of the rear interface of the treatment box 11. The return pipe 12 is inserted into the treatment box 11, and the side of the return pipe 12 is evenly distributed with side through holes, so that The reflux pipe 12 is connected to the treatment box 11, the cross-sectional diameter of the rear end port of the reflux pipe 12 is larger than the cross-sectional diameter of the main body of the reflux pipe 12, and the rear end port of the reflux pipe 12 is sleeved with an installation panel 14 made of insulating material, and the rear end port of the reflux pipe 12 is threadedly fixedly connected with a reflux drainage pipe 15, the reflux drainage pipe 15 and the conduit for supplying the spray liquid are respectively connected to the left and right interfaces of the liquid inlet pipe 6, and are used to pass the spray liquid and the cyanide gold-containing lean liquid into the liquid inlet pipe 6, and the end face of the reflux drainage pipe 15 is used to squeeze the installation panel 14 to fix it, and a plurality of through holes are evenly distributed on the installation panel 14 so that the reflux drainage pipe 15 It is connected to the return pipe 12, a collector rod 16 is fixed on the installation panel 14, the collector rod 16 is inserted into the return pipe 12, a first pumping impeller 17 is arranged on the upper side of the installation panel 14, a second pumping impeller 18 is arranged in the treatment box 11, a driving shaft 19 runs through the collector rod 16, the first pumping impeller 17 and the second pumping impeller 18 are both fixedly connected to the driving shaft 19, a front end cover 20 is threadedly fixedly connected to the front interface of the treatment box 11, the middle part of the front end cover 20 is concave downward, and a collector panel 23 is fixed to the middle part of the front end cover 20, and a plurality of through holes are evenly distributed on the collector panel 23, which is convenient for the treatment box 11 The mixed liquid enters the drain pipe 13, the collector panel 23 is connected to the anode rod 1001 through a wire, a plurality of cathode electrolytic rods 21 are fixed on the inner side of the front end cover 20, and the cathode electrolytic rods 21 are evenly distributed around the return pipe 12. An opening is provided in the middle of the front end cover 20, and a drain pipe 13 is fixed to the opening in the middle of the front end cover 20. The drain pipe 13 is an L-shaped structure, and the rear end port of the drain pipe 13 is connected to the opening in the middle of the front end cover 20. A drive motor 22 is fixed on the drain pipe 13, and the output shaft of the drive motor 22 is inserted into the drain pipe 13, and the output shaft of the drive motor 22 is fixedly connected to the drive shaft 19.

[0037] In this embodiment, the cathode panel 901 is connected to the collector rod 16 via a wire, and the electrons on the collector rod 16 are transferred to the cathode panel 901 by means of guidance.

[0038] In this embodiment, an insulating layer is provided on the surface of the driving shaft 19 to prevent the electrons on the collector rod 16 from transferring to the driving shaft 19 .

[0039] In this embodiment, an insulating layer is provided between the front end cover 20 and the current collecting panel 23 to prevent the electrons on the front end cover 20 from transferring to the current collecting panel 23 .

[0040] In this embodiment, during the spray heap leaching of gold ore, the spray liquid is directly introduced into the liquid inlet pipe 6, and then passes through the shunt pipe 5 and the spray pipe 7 in sequence, and then sprayed out from the spray end 8 to spray the gold ore on the heap leaching field. After the cyanide gold-containing precious liquid sprayed on the gold ore is electrolytically extracted, the remaining cyanide gold-containing lean liquid is re-introduced into the liquid inlet pipe 6 for recycling. Under the limiting effect of the shunt baffle 701, the mixed liquid in the shunt pipe 5 near the axis area enters the spray pipe 7 and then directly sprays out from the spray end, while the mixed liquid near the side wall area of ​​the shunt pipe 5 is blocked by the shunt baffle 701 and then enters the transition box 4 from the side through hole near the lower end of the shunt pipe 5, and then enters the treatment box 11 through the connecting transverse pipe 3;

[0041] The driving motor 22 is turned on to drive the first pumping impeller 17 and the second pumping impeller 18 to rotate, and the cathode electrolysis rod 21 is energized. Under the action of the electric field, the metal cations move toward the cathode electrolysis rod 21 due to the positive charge, resulting in a long distance from the cathode electrolysis rod 21, that is, the metal cation concentration in the mixed liquid in the area near the collector rod 16 in the return pipe 12 decreases. Then, under the driving action of the first pumping impeller 17, the mixed liquid in the return pipe 12 is re-pumped into the liquid inlet pipe 6 for recycling to spray the gold ore, and the mixed liquid rich in metal cations isolated in the treatment box 11 by the return pipe 12 is pumped into the drain pipe 13 by the second pumping impeller 18 and then discharged, and is subjected to gold extraction treatment together with the cyanide gold-containing liquid precious liquid after spraying the gold ore, and the gold and other base metals therein are recovered; the metal cations are continuously separated from the mixed liquid rich in metal cations by the movement of the metal cations in the electrolyte during the electrolysis process, so as to avoid metal enrichment in the recycled cyanide gold-containing lean liquid, and ensure the spraying effect;

[0042] In the process of metal cations gathering toward the cathode electrolysis rod 21 area, the anions in the mixed solution move away from the cathode electrolysis rod 21 area, that is, the anions enter the return pipe 12 and gather in the collector rod 16 area. Since the anions are negatively charged, the collector rod 16 obtains electrons from the anions, and then the electrons on the collector rod 16 are transferred to the cathode panel 901 through the wire. At the same time, in the process of the mixed solution rich in metal cations in the treatment box 11 entering the drain pipe 13 through the collector panel 23, the electrons on the collector panel 23 are continuously transferred to the mixed solution. At the same time, the electrons on the anode rod 1001 are transferred to the collector panel 23 through the wire, causing the anode rod 1001 to lose electrons. The anode rod 1001 and the cathode panel 901 An electric field is formed between the anode rod 1001 and the cathode panel 901. Under the action of the electric field, during the flow of the mixed liquid in the liquid inlet pipe 6, the cyanide anions in the mixed liquid gather toward the axial area of ​​the liquid inlet pipe 6 and then enter the spray pipe 7, while the metal cations move toward the side wall area of ​​the liquid inlet pipe 6. That is, in the process of electrolyzing the mixed liquid by the cathode electrolysis rod 21 and separating the metal cations from the mixed liquid, the movement of the metal cations and the cyanide anions forms a positive feedback to form an electric field between the anode rod 1001 and the cathode panel 901, thereby promoting the separation of the metal cations and the cyanide anions in the liquid inlet pipe 6. Moreover, under the limiting effect of the diversion baffle 701, the content of the metal cations in the mixed liquid used for spraying the gold ore is further reduced, thereby reducing the influence of the metal cations on the spraying effect.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heap leaching field spraying device, characterized in that: It comprises two symmetrically arranged spraying devices and a circulation device connecting the two spraying devices, and the spraying device comprises: A transition box, which has an upper interface on the top, a lower interface on the bottom, and a side interface on the side; a transition end cover detachably connected to the upper interface, the outer periphery of the transition end cover is provided with anti-slip patterns, and the lower part thereof extends to form a cathode panel inserted into the transition box; A flow divider pipe sleeved in the transition end cover, a plurality of flow divider holes are circumferentially provided at the lower part of the flow divider pipe, and an annular flow channel is formed between the outer side of the pipe wall and the transition end cover; A four-way liquid inlet pipe is arranged at the top of the shunt pipe, and a sealing cover and an anode rod are arranged through the top of the liquid inlet pipe; The spray assembly connected to the lower interface includes a spray pipe threadedly connected to the transition box and a spray end head arranged at the end of the spray pipe, and the top of the spray pipe is provided with a conical flow guide cover inserted into the diverter pipe; The circulation device is connected to the side interfaces of the two spray devices respectively through a connecting transverse pipe to form a closed circulation loop.

2. A heap leaching field spraying device according to claim 1, characterized in that: The transition end cover and the upper interface, the shunt pipe and the transition end cover, and the spray pipe and the lower interface are all connected by threads to form a detachable connection structure; the axis of the cathode panel is coaxially arranged with the axis of the shunt pipe, and the inner diameter of the cathode panel is larger than the outer diameter of the shunt pipe to form the annular flow channel.

3. A heap leaching field spraying device according to claim 1, characterized in that: The conical flow guide cover is a trumpet-shaped structure that is narrow at the top and wide at the bottom. Its maximum outer diameter is equal to the inner diameter of the shunt tube and forms a gap fit with the inner wall of the shunt tube. The anode rod extends vertically from the top of the liquid inlet tube to the inside of the shunt tube, and its end forms an electrochemical reaction space with the cathode panel.

4. A heap leaching field spraying device according to claim 1, characterized in that: The circulation unit comprises: The left and right side walls of the treatment box are connected to the side interfaces of the two spray devices through the connecting horizontal pipe respectively; the return pipe is horizontally arranged in the treatment box, the front section of which is a closed pipe body with a circumferentially arranged flow diversion hole, and the rear section forms an expanded diameter part and is fixed at the rear interface of the treatment box through a threaded connection; A mounting panel embedded in the expanded diameter portion, the surface of the mounting panel is provided with a filter hole array connected to the return drain pipe, and the center of the mounting panel is fixedly connected to a collector rod extending into the return pipe; A driving shaft coaxially passing through the mounting panel, a front section of which is fixed with a first impeller located in the return pipe, and a rear section of which extends to the outside of the processing box and is connected to a driving motor; The electrolytic assembly arranged at the front end of the processing box comprises a front end cover connected by threads, a cathode electrolytic rod fixed to the inner wall of the front end cover, and a current collecting panel; A second impeller is provided between the first impeller and the driving shaft, and the current collecting panel forms an electrical connection loop with the anode rod through a conducting wire.

5. A heap leaching field spraying device according to claim 4, characterized in that: The inner wall of the enlarged diameter portion of the reflux pipe is provided with a stepped limiting boss, and the mounting panel is fixed to the limiting boss by crimping the end surface of the reflux drain pipe.

6. A heap leaching field spraying device according to claim 4, characterized in that: An electrolytic reaction chamber is formed between the cathode electrolytic rod and the collector rod. The output end of the driving motor is connected to the driving shaft through a coupling, and the coupling is nested inside the bent portion of the drainage pipe.

7. A heap leaching field spraying device according to claim 4, characterized in that: The cathode panel is connected to the collector rod through a wire, an insulating layer is provided on the surface of the driving shaft, and an insulating layer is provided between the front end cover and the collector panel.

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