Multi-point oxygen supplementation device for all-mud cyaniding process

Abstract

The utility model relates to the technical field of gold ore treatment equipment, in particular to a multi-point oxygenating device for an all-mud cyaniding process, which comprises an ore pulp treatment tank, a stirring mechanism is arranged in the ore pulp treatment tank, and an oxygen supplementing mechanism is arranged on the stirring mechanism; the oxygen supplementation mechanism comprises an oxygen supplementation pipe, and the oxygen supplementation pipe is rotationally connected to the interior of the ore pulp treatment pond; the stirring mechanism comprises a stirring blade, the stirring blade is rotationally connected to the outer side of the oxygen supplementing pipe, the stirring blade is of a hollow structure, and aeration holes are formed in the outer side of the stirring blade. The stirring blades of the hollow structure are matched with the aeration holes, oxygen supplementation operation can be conducted while stirring is conducted, meanwhile, due to the fact that the aeration holes are distributed in the stirring blades, an oxygen supplementation area and a stirring area are overlapped, and the oxygen supplementation effect of different areas is improved. The stirring blades of a rotary structure can be driven by ore pulp to rotate, so that the ore pulp on the bottom layer is turned over to the upper layer, and the ore pulp and gold-loaded carbon are prevented from being deposited to the bottom to affect the treatment effect on the ore pulp.

Description

Technical Field

[0001] This utility model relates to the technical field of gold ore processing equipment, specifically a multi-point oxygen supplementation device for a whole-mud cyanidation process. Background Technology

[0002] The whole-sludge cyanide carbon-in-pulp (CIP) gold smelting process refers to a method in which all gold ore is ground into sludge to form a slurry, then subjected to cyanide leaching, followed by direct adsorption of dissolved gold and gold-loaded material from the slurry using activated carbon, and finally, direct separation, purification, and smelting of the gold mud via carbon desorption and electrodeposition. The process includes seven operational stages: raw material preparation, stirring, cyanide leaching, activated carbon countercurrent adsorption, gold-loaded material desorption and electrodeposition, gold mud separation, purification, smelting, and ingot casting, activated carbon activation and regeneration, and cyanide-containing wastewater treatment. Oxygen acts as an oxidant, directly participating in the chemical reaction that dissolves gold. Oxygen supplementation ensures the reaction rate and prevents a decrease in leaching rate due to insufficient oxygen. Reducing substances such as sulfides and ferrous ions in the ore consume oxygen, requiring additional oxygen supplementation to maintain the oxygen concentration.

[0003] Existing technologies for oxygenating slurry mostly rely on simple pipes. For example, the utility model disclosed in CN217628566U describes an aeration device for a whole-sludge cyanidation carbon slurry process. This device uses a gas pipe with its lower end initially inclined downwards, then bends forward and extends forward at a gentle angle. The exhaust port at the end of the gas pipe extends vertically downwards. The device also includes a tank containing a stirring device, with the lower end of the gas pipe extending into the tank. The diameter of the gas pipe is 10–30 mm. The exhaust direction at the tail end is changed from horizontal to vertical. These optimizations improve cyanidation process parameters, including gold and silver leaching rates and recovery rates.

[0004] However, existing oxygenation structures still have some shortcomings. For example, to avoid interference with the mixing of the slurry, oxygenation pipes are mostly located at the edge of the treatment tank. However, due to the high viscosity of the slurry, which hinders oxygen diffusion, it is difficult to oxygenate the slurry in the central area. Therefore, we propose a multi-point oxygenation device for the whole-sludge cyanidation process. Utility Model Content

[0005] The purpose of this invention is to provide a multi-point oxygenation device for a whole-sludge cyanidation process, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-point oxygenation device for a whole-sludge cyanidation process includes a slurry treatment tank;

[0008] The slurry treatment tank is equipped with a stirring mechanism, and the stirring mechanism is equipped with an oxygen supply mechanism.

[0009] The oxygen supply mechanism includes an oxygen supply pipe, which is rotatably connected inside the slurry treatment tank;

[0010] The stirring mechanism includes a stirring blade, which is rotatably connected to the outside of the oxygen supply pipe. The stirring blade has a hollow structure and an aeration hole is provided on the outside of the stirring blade.

[0011] Preferably, a support rod is rotatably connected inside the slurry treatment tank, the oxygen supply pipe is sleeved on the outside of the support rod, a drive plate is fixedly connected between the oxygen supply pipe and the support rod, and the inside of the stirring blade is in communication with the inside of the oxygen supply pipe.

[0012] Preferably, a support frame is fixedly connected to the top of the slurry treatment tank, a dual-shaft motor is fixedly connected to the support frame, and a synchronous pulley is fixedly connected to the end of the output shaft of one end of the dual-shaft motor.

[0013] Preferably, a transmission gear is fixedly connected to the top of the support rod, a drive gear is meshed with the side of the transmission gear, a second synchronous pulley is fixedly connected to the top of the drive gear, and a synchronous belt is sleeved on the outer side of the first synchronous pulley and the second synchronous pulley.

[0014] Preferably, the aeration holes are equidistant from each other, and a baffle is rotatably connected to the top of the oxygen supply pipe.

[0015] Preferably, a piston cylinder is fixedly connected to the support frame, a piston rod is connected inside the piston cylinder, an air inlet pipe and an exhaust pipe are fixedly connected to both ends of the piston cylinder, the exhaust pipe is internally connected to the oxygen supply pipe, and a one-way valve is fixedly connected inside the air inlet pipe and the exhaust pipe.

[0016] Preferably, a reciprocating lead screw is rotatably connected to the support frame, a moving block is meshed with the outer side of the reciprocating lead screw, the moving block is fixedly connected to the end of the piston rod, and a meshing linkage gear is fixedly connected to the end of the reciprocating lead screw and the end of the output shaft of the other end of the dual-axis motor.

[0017] By employing the above technical solution, this utility model provides a multi-point oxygenation device for a whole-sludge cyanidation process, which has at least the following beneficial effects:

[0018] (1) The present invention can perform oxygenation operation at the same time as stirring by using the hollow structure of the stirring blade and the aeration holes. Since the aeration holes are distributed on the stirring blade, the oxygenation area overlaps with the stirring area, thus improving the oxygenation effect in different areas.

[0019] (2) The rotating stirring blades of this utility model can be driven to rotate by the slurry, thereby turning the bottom slurry to the top layer, avoiding the deposition of slurry and gold-loaded carbon at the bottom and affecting the treatment effect of the slurry. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0021] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the internal structure of the present invention. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the internal structure of the present invention. Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the internal structure of the oxygen supply tube of this utility model.

[0026] In the diagram: 1. Slurry treatment tank; 2. Mixing mechanism; 201. Mixing blade; 202. Support frame; 203. Dual-shaft motor; 204. Synchronous pulley one; 205. Transmission gear; 206. Drive gear; 207. Synchronous pulley two; 208. Synchronous belt; 3. Aeration mechanism; 301. Support rod; 302. Aeration pipe; 303. Drive plate; 304. Aeration hole; 305. Baffle; 306. Piston cylinder; 307. Piston rod; 308. Exhaust pipe; 309. Reciprocating screw; 310. Moving block; 311. Linkage gear. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] A multi-point oxygen supplementation device for a full-sludge cyanidation process, such as Figures 1-5 As shown, it includes a slurry treatment tank 1;

[0030] The slurry treatment tank 1 is equipped with a stirring mechanism 2, which continuously stirs the cyanide-treated ore slurry inside the slurry treatment tank 1, thereby increasing the contact area between dissolved oxygen and the ore slurry. The stirring mechanism 2 is equipped with an oxygen supplementation mechanism 3, which can perform multi-point oxygen supplementation operations inside the ore slurry to increase the dissolved oxygen in the ore slurry.

[0031] Specifically, the oxygenation mechanism 3 includes a support rod 301, which is rotatably connected to the top of the slurry treatment tank 1 and is vertically positioned inside the tank. An oxygenation pipe 302 is sleeved on the outside of the support rod 301. The inner diameter of the oxygenation pipe 302 is larger than the diameter of the support rod 301, and the cavity between the oxygenation pipe 302 and the support rod 301 facilitates oxygenation of the slurry. A drive plate 303 is fixedly connected to the inner side of both the oxygenation pipe 302 and the support rod 301. The structure of the drive plate 303 allows the support rod 301 to easily drive the oxygenation pipe 302 to rotate.

[0032] It is worth noting that the stirring mechanism 2 includes a stirring blade 201, which is rotatably connected to the outside of the oxygen supply pipe 302. The stirring blade 201 has a hollow structure, and its interior is interconnected with the interior of the oxygen supply pipe 302. The hollow structure of the stirring blade 201 facilitates the flow of air from inside the oxygen supply pipe 302 into the stirring blade 201. Aeration holes 304 are provided on the outside of the stirring blade 201, and the aeration holes 304 are equidistantly spaced. The structure of the aeration holes 304 facilitates the aeration of high-pressure air from the stirring blade 201 and the oxygen supply pipe 302 into the slurry, thereby performing oxygenation operations on the slurry. A baffle 305 is rotatably connected to the top of the oxygen supply pipe 302. The baffle 305 can block the top of the oxygen supply pipe 302, and while preventing the air from escaping from inside the oxygen supply pipe 302, it also allows the baffle 305 to be relatively fixed at an angle relative to the slurry treatment tank 1. Meanwhile, the rotating stirring blade 201 can be flipped during the stirring process, thereby improving the stirring effect. The stirring blade 201 has an S-shaped structure and can be driven by the slurry to rotate around the axis when the stirring blade 201 rotates.

[0033] Furthermore, a support frame 202 is fixedly connected to the top of the slurry treatment tank 1. The support frame 202 can support the stirring mechanism 2 and the oxygenation mechanism 3. A dual-shaft motor 203 is fixedly connected to the support frame 202, and a synchronous pulley 204 is fixedly connected to the end of the output shaft of one end of the dual-shaft motor 203.

[0034] Furthermore, a transmission gear 205 is fixedly connected to the top of the support rod 301. A drive gear 206 is meshed with the side of the transmission gear 205. The transmission gear 205 and the drive gear 206 have different diameters, and the diameter ratio of the drive gear 206 to the transmission gear 205 is 5:1 to 10:1. The combination of the drive gear 206 and the transmission gear 205 can form a reduction gear, which reduces the driving speed of the dual-shaft motor 203 and transmits it to the support rod 301. A second synchronous pulley 207 is fixedly connected to the top of the drive gear 206. A synchronous belt 208 is sleeved on the outer side of the first synchronous pulley 204 and the second synchronous pulley 207. The second synchronous pulley 207 can drive the drive gear 206 to rotate continuously through the transmission of the first synchronous pulley 204 and the synchronous belt 208.

[0035] Based on this, a piston cylinder 306 is fixedly connected to the support frame 202. A piston rod 307 is connected inside the piston cylinder 306. The piston cylinder 306 and piston rod 307 can cooperate with each other to pump gas into the oxygen supply pipe 302 through the piston. An air inlet pipe and an exhaust pipe 308 are fixedly connected to both ends of the piston cylinder 306. The exhaust pipe 308 is interconnected with the interior of the oxygen supply pipe 302. A one-way valve is fixedly connected inside the air inlet pipe and the exhaust pipe 308. The one-way valve structure can limit the direction of gas flow inside the air inlet pipe and the exhaust pipe 308, so that outside air flows from the air inlet pipe through the one-way valve to the interior of the piston cylinder 306, and under the drive of the piston rod 307, flows from the exhaust pipe 308 through the one-way valve to the interior of the oxygen supply pipe 302. This can increase the gas pressure inside the oxygen supply pipe 302 and aerate the air from the sufficiently deep slurry.

[0036] It is worth noting that a reciprocating lead screw 309 is rotatably connected to the support frame 202. A moving block 310 is meshed with the outer side of the reciprocating lead screw 309. The moving block 310 is fixedly connected to the end of the piston rod 307. A meshing linkage gear 311 is fixedly connected to the end of the reciprocating lead screw 309 and the end of the output shaft of the other end of the dual-axis motor 203. The reciprocating lead screw 309 can drive the piston rod 307 through the moving block 310, causing the piston rod 307 to move continuously reciprocally along the axial direction, and periodically pumping the air inside the piston cylinder 306 out from both ends of the piston cylinder 306. The linkage gear 311 facilitates the dual-axis motor 203 to drive the reciprocating lead screw 309.

[0037] In operation, the multi-point oxygenation device for the whole-sludge cyanidation process of this utility model starts the dual-shaft motor 203. The synchronous pulley 204 at the end of the output shaft of the dual-shaft motor 203 rotates continuously, driving the synchronous pulley 207 to rotate continuously via the synchronous belt 208. The synchronous pulley 207, in turn, drives the drive gear 206 and the meshing transmission gear 205 to rotate. The transmission gear 205, via the support rod 301, drives the oxygenation pipe 302 and the stirring blade 201 to rotate, continuously stirring the cyanided slurry inside the slurry treatment tank 1. Simultaneously, the output shaft of the other end of the dual-shaft motor 203 drives the reciprocating screw 309 to rotate continuously via the linkage gear 311. The reciprocating screw 309 drives the meshing piston rod 307 to move continuously back and forth along the screw, and during this movement, it drives the piston rod 307 to move synchronously. As the piston rod 307 moves inside the piston cylinder 306, it introduces air from inside the piston cylinder 306 into the oxygenation pipe 302 through the exhaust pipe 308. The gas pressure in the oxygen supply pipe 302 continuously increases. As the agitator blade 201 rotates along with the oxygen supply pipe 302, it is driven by the slurry to rotate, and the continuous stirring of the slurry increases its contact with dissolved oxygen. Stirring continues until the gas pressure inside the oxygen supply pipe 302 reaches a set range. Then, compressed air inside the oxygen supply pipe 302 is aerated into the slurry through the aeration holes 304 on the agitator blade 201. Since the slurry is still under continuous stirring, this increases the contact between the oxygen in the air and the slurry.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-point oxygen supplement device for a whole slime cyanidation process, comprising a slurry treatment tank (1), characterized in that: The slurry treatment tank (1) is equipped with a stirring mechanism (2), and the stirring mechanism (2) is equipped with an oxygen supply mechanism (3). The oxygen supply mechanism (3) includes an oxygen supply pipe (302), which is rotatably connected inside the slurry treatment tank (1); The stirring mechanism (2) includes a stirring blade (201), which is rotatably connected to the outside of the oxygen supply pipe (302). The stirring blade (201) has a hollow structure, and an aeration hole (304) is provided on the outside of the stirring blade (201).

2. The multi-point oxygen supplement device for a whole slime cyanidation process according to claim 1, characterized in that: The slurry treatment tank (1) is rotatably connected to a support rod (301), and the oxygen supply pipe (302) is sleeved on the outside of the support rod (301). A drive plate (303) is fixedly connected between the oxygen supply pipe (302) and the support rod (301). The inside of the stirring blade (201) is interconnected with the inside of the oxygen supply pipe (302).

3. The multi-point oxygen supplement device for a whole slime cyanidation process according to claim 2, characterized in that: The top of the slurry treatment tank (1) is fixedly connected to a support frame (202), and a dual-shaft motor (203) is fixedly connected to the support frame (202). A synchronous pulley (204) is fixedly connected to the end of the output shaft of the dual-shaft motor (203).

4. The multi-point oxygen supplement device for a whole slime cyanidation process according to claim 3, characterized in that: The top end of the support rod (301) is fixedly connected to a transmission gear (205), the side of the transmission gear (205) is meshed with a drive gear (206), the top end of the drive gear (206) is fixedly connected to a second synchronous pulley (207), and a synchronous belt (208) is sleeved on the outside of the first synchronous pulley (204) and the second synchronous pulley (207).

5. The multi-point oxygen supplement device for a total slime cyanidation process according to claim 2, characterized in that: The aeration holes (304) are equidistant from each other, and a baffle (305) is rotatably connected to the top of the oxygen supply pipe (302).

6. A multi-point oxygen supplementation device for a whole-sludge cyanidation process according to claim 3, characterized in that: A piston cylinder (306) is fixedly connected to the support frame (202). A piston rod (307) is connected inside the piston cylinder (306). An air inlet pipe and an exhaust pipe (308) are fixedly connected to both ends of the piston cylinder (306). The exhaust pipe (308) is internally connected to the oxygen supply pipe (302). A one-way valve is fixedly connected inside the air inlet pipe and the exhaust pipe (308).

7. The multi-point oxygen supplement device for a total slime cyanidation process according to claim 3, characterized in that: A reciprocating screw (309) is rotatably connected to the support frame (202). A moving block (310) is meshed with the outside of the reciprocating screw (309). The moving block (310) is fixedly connected to the end of the piston rod (307). A meshing linkage gear (311) is fixedly connected to the end of the reciprocating screw (309) and the end of the output shaft of the other end of the dual-axis motor (203).

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