Device and method for controlling activated carbon in all-mud cyanided carbon slurry gold extraction process

Abstract

The invention discloses a device and a method for controlling activated carbon in an all-mud cyanided carbon slurry gold extraction process, and relates to the technical field of all-mud cyanided carbon slurry gold extraction processes. The device comprises a plurality of groups of dipping and absorbing tanks, a water pipe and a carbon powder pipe, the water pipe is communicated with the dipping and absorbing tanks through a water supplementing pipe, a second flow control valve is fixedly mounted in the water supplementing pipe, the carbon powder pipe is communicated with the dipping and absorbing tanks through a carbon supplementing pipe, a third flow control valve is fixedly mounted in the carbon supplementing pipe, and a carbon lifting device is fixedly mounted in each dipping and absorbing tank. And a discharge hole of the charcoal lifting device is communicated with the next group of immersion and suction tanks through a connecting pipe. Through the arrangement of the carbon supplementing pipe and the third flow control valve, the multiple sets of leaching and absorbing tanks can be controlled to add different kinds of carbon powder at the same time, and therefore under the condition that flowing of ore pulp is not stopped, the carbon density of the next set of leaching and absorbing tanks cannot be affected while the carbon density of the corresponding leaching and absorbing tanks can be adjusted, the carbon sealing control precision is high, flowing of the ore pulp does not need to be stopped, and the service life is long. And the gold extraction efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of full-mud cyanidation carbon slurry gold extraction process, and in particular to a control device and method for activated carbon in the full-mud cyanidation carbon slurry gold extraction process. Background Art

[0002] The full-slime cyanide carbon-slurry gold extraction and smelting process refers to a process in which all gold ore is ground into slurry (-200 mesh content accounts for more than 90-95%), and then cyanide leaching is carried out, and then activated carbon is used to directly adsorb the dissolved gold from the slurry, and carbon is used to desorb the electrolytic gold mud to directly separate, purify and smelt it.

[0003] In the document (application number: CN200910172565.7), a cell-hopping cyanide carbon slurry competitive adsorption gold extraction process is disclosed, in which the cyanide slurry passes through multiple stirred leaching tanks in sequence. Starting from the last leaching tank, at least two leaching tanks (including the last leaching tank) are selected as carbon-series tanks, and the rest are ordinary leaching tanks. After the activated carbon is added to the last leaching tank, it flows through each carbon-series tank in reverse order; at least one group of adjacent carbon-series tanks has an ordinary leaching tank in the interval. This patent and the prior art both use multiple groups of leaching tanks for segmented leaching treatment. In the actual treatment process, it is necessary to determine the standard carbon density of each leaching tank based on the designed carbon density and adjust the subsequent carbon stringing amount. The commonly used method is: every 8 hours, manually measure the volume of a single spoon of carbon, enter it into the automatic carbon stringing system, calculate the actual carbon density, and compare it with the standard carbon density as a single variable. The test efficiency is low. At the same time, when adjusting the carbon density subsequently, it is necessary to stop the slurry from flowing into the subsequent leaching tank. Moreover, due to the large number of leaching tanks, a long time is required for adjustment, which seriously affects the gold extraction efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a control device and method for activated carbon in a full-mud cyanidation carbon slurry gold extraction process.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: The control device of activated carbon in the full-mud cyanidation carbon slurry gold extraction process comprises a plurality of groups of immersion and absorption tanks, water pipes and carbon powder pipes, wherein the water pipes are connected to the immersion and absorption tanks through water supply pipes, a second flow control valve is fixedly installed inside the water supply pipes, the carbon powder pipes are connected to the immersion and absorption tanks through carbon supply pipes, a third flow control valve is fixedly installed inside the carbon supply pipes, a carbon extractor is fixedly installed inside the immersion and absorption tanks, and a discharge port of the carbon extractor is connected to the next group of immersion and absorption tanks through a connecting pipe; A carbon control assembly is arranged between adjacent immersion and absorption tanks, and the carbon control assembly includes a carbon control tank, a slurry inlet pipe is arranged on the top of the carbon control tank, the slurry inlet pipe is connected with the connecting pipe, a flow control valve 1 is fixedly installed inside the slurry inlet pipe, a liquid level sensor is fixedly installed on the inner top of the carbon control tank, a slurry discharge port is opened at the bottom of the carbon control tank, a slurry discharge valve is fixedly installed inside the slurry discharge port, a slurry discharge pipe is fixedly installed at the bottom of the slurry discharge port, and the slurry discharge pipe is connected with the next group of immersion and absorption tanks; A filtering distance is set between the slurry discharge pipe and the slurry discharge port, a distance measuring sensor is fixedly installed on the left side of the bottom of the carbon control tank, a telescopic cylinder is fixedly installed on the right side of the bottom of the carbon control tank, a flip motor is fixedly installed on the left side of the telescopic end of the telescopic cylinder, a filter tube is fixedly installed on the left side of the output end of the flip motor, the filter tube can be just inserted in the filtering distance, and a filter screen is fixedly installed inside the filter tube.

[0006] Furthermore, a stirring shaft is arranged inside the immersion and absorption tank.

[0007] Furthermore, the bottom of the carbon control canister is designed to be funnel-shaped.

[0008] Furthermore, a flushing pipe is provided on the top of the carbon control canister, the flushing pipe is connected to a water pipe, and a flushing valve is fixedly installed inside the flushing pipe.

[0009] Furthermore, sealing rubber rings are provided at the bottom of the slurry discharge port and the top of the slurry discharge pipe.

[0010] Furthermore, the outer surface of the sealing rubber ring is designed to be conical.

[0011] Furthermore, the flip motor is a three-phase asynchronous motor.

[0012] The control method of activated carbon in the whole mud cyanide carbon slurry gold extraction process comprises the following steps: S1. Raw material preparation: crush the gold ore into suitable particle size, and then use a ball mill to grind the crushed ore to make the ore particles finer and increase the exposure area of ​​gold; S2, leaching: the ground slurry and sodium cyanide solution are added to the leaching tank for mixing and cyanide leaching. After leaching, activated carbon is added to the slurry. The activated carbon can effectively adsorb the gold cyanide complex. Then, the slurry is sequentially transported to the subsequent leaching tanks by the carbon extractor. Through multiple groups of leaching tanks, gold leaching and adsorption can be carried out in stages, thereby improving the gold recovery rate. During the transportation process, the carbon density in the slurry is detected every 8 hours by the carbon control component. S3, when the carbon density is low: it means that the carbon density in the first group of immersion and absorption tanks is low, the carbon supply is controlled by the flow control valve 3, and the corresponding carbon powder is added to the second group of immersion and absorption tanks according to the carbon supply speed of the carbon supply device, so that the carbon density of the slurry entering the second group of immersion and absorption tanks meets the standard; S4. When the carbon density is high: it means that the carbon density in the previous group of immersion tanks is high. The water replenishment amount is controlled by the flow control valve 2. At the same time, the slurry inlet pipe and the slurry discharge valve are opened. Part of the slurry is filtered through the filter screen, and the filtration amount is controlled by the flow control valve 1, so that the carbon density of the slurry entering the next group of immersion tanks meets the standard.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention can simultaneously control multiple groups of immersion and absorption tanks to add different carbon powders through the setting of the carbon replenishing pipe and the flow control valve three. Therefore, without stopping the flow of slurry, the carbon density of the corresponding immersion and absorption tank can be adjusted without affecting the carbon density of the next group of immersion and absorption tanks. Then, the amount of slurry entering the carbon control tank is controlled by setting the flow control valve one. The slurry is filtered through the filter screen to remove the carbon powder, which will not affect the carbon density of the next group of immersion and absorption tanks. Therefore, when adjusting the carbon density of each immersion and absorption tank, the carbon density in other immersion and absorption tanks will not be affected. The carbon sealing control accuracy is high, and there is no need to stop the flow of slurry, which greatly improves the gold extraction efficiency.

[0014] 2. The present invention controls the injection of a certain amount of ore pulp into the carbon tank, and then filters the ore pulp through a filter screen, and the filtered carbon powder is accumulated on the filter screen, and then the filter tube is pushed to the bottom of the distance sensor by a telescopic cylinder. Since the height of the distance sensor is constant, the distance sensor can detect the height of the carbon powder inside the filter tube. Since the radius of the filter tube is constant, the amount of carbon powder can be calculated, and then the carbon density can be calculated. The carbon density can be measured when the ore pulp flows, and the carbon density detection and the carbon seal reduction are the same structure, and the structure is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the system structure of the present invention; Figure 2 It is a schematic diagram of the connection structure of adjacent immersion and absorption tanks of the present invention; Figure 3 This is a schematic diagram of the filtration of the carbon control assembly of the present invention; Figure 4 This is a schematic diagram of the carbon control component detection of the present invention; Figure 5 It is a schematic diagram of powder discharge of the carbon control component of the present invention.

[0016] Figure numerals: 1. Immersion and absorption tank; 2. Water pipe; 3. Carbon powder pipe; 4. Stirring shaft; 5. Carbon lifter; 6. Connecting pipe; 7. Carbon control tank; 71. Slurry inlet pipe; 72. Flow control valve one; 73. Flushing pipe; 74. Flushing valve; 75. Liquid level sensor; 76. Slurry discharge valve; 77. Slurry discharge pipe; 78. Telescopic cylinder; 79. Flipping motor; 710. Filter tube; 711. Filter screen; 712. Distance sensor; 713. Sealing rubber ring; 8. Water supply pipe; 81. Flow control valve two; 9. Carbon supply pipe; 91. Flow control valve three. DETAILED DESCRIPTION

[0017] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] Embodiment 1, as Figure 1-Figure 5 As shown, the control device of activated carbon in the full-mud cyanide carbon slurry gold extraction process includes multiple groups of immersion and absorption tanks 1, water pipes 2 and carbon powder pipes 3. The water pipes 2 are connected to the immersion and absorption tanks 1 through water supply pipes 8. A second flow control valve 81 is fixedly installed inside the water supply pipes 8. The carbon powder pipes 3 are connected to the immersion and absorption tanks 1 through carbon supply pipes 9. A third flow control valve 91 is fixedly installed inside the carbon supply pipes 9. A carbon extractor 5 is fixedly installed inside the immersion and absorption tanks 1. The discharge port of the carbon extractor 5 is connected to the next group of immersion and absorption tanks 1 through connecting pipes 6. A carbon control assembly is arranged between adjacent immersion and absorption tanks 1, and the carbon control assembly includes a carbon control tank 7, a slurry inlet pipe 71 is arranged on the top of the carbon control tank 7, the slurry inlet pipe 71 is connected with the connecting pipe 6, a flow control valve 72 is fixedly installed inside the slurry inlet pipe 71, a liquid level sensor 75 is fixedly installed on the inner top of the carbon control tank 7, a slurry discharge port is opened at the bottom of the carbon control tank 7, a slurry discharge valve 76 is fixedly installed inside the slurry discharge port, a slurry discharge pipe 77 is fixedly installed at the bottom of the slurry discharge port, and the slurry discharge pipe 77 is connected with the next group of immersion and absorption tanks 1; A filtering distance is set between the slurry discharge pipe 77 and the slurry discharge port, a distance measuring sensor 712 is fixedly installed on the left side of the bottom of the carbon control tank 7, a telescopic cylinder 78 is fixedly installed on the right side of the bottom of the carbon control tank 7, a flip motor 79 is fixedly installed on the left side of the telescopic end of the telescopic cylinder 78, a filter tube 710 is fixedly installed on the left side of the output end of the flip motor 79, the filter tube 710 can be just inserted in the filtering distance, and a filter screen 711 is fixedly installed inside the filter tube 710.

[0019] By setting the carbon lifter 5 and the connecting pipe 6, the pulp is allowed to enter the next leaching tank 1 from the previous leaching tank 1, and gold leaching and adsorption can be carried out in stages, thereby improving the gold recovery rate. After 8 hours, the carbon density is detected, and the flow control valve 72 is controlled to be fully opened. Part of the pulp in the previous group of leaching tanks 1 enters the carbon control tank 7, and the pulp accumulates in the carbon control tank 7. When the predetermined liquid level is reached, the liquid level sensor 75 feedbacks the liquid level height, and the external controller controls the flow control valve 72 to close, and then controls the pulp discharge valve 76 to open, and the pulp is filtered through the filter screen 711. The filtered pulp enters The slurry is then filtered into the next group of leaching and absorption tanks 1 without causing slurry waste. When the slurry in the carbon control tank 7 is completely filtered, the telescopic cylinder 78 is controlled to operate, and the telescopic cylinder 78 drives the flip motor 79 to move to the left, and the flip motor 79 drives the filter tube 710 to move to the left. The filter tube 710 moves to the bottom of the distance sensor 712. Since the distance sensor 712 and the filter screen 711 are at a fixed height, the height of the charcoal powder in the filter tube 710 can be measured. Since the inner diameter of the filter tube 710 is fixed, the amount of charcoal powder can be calculated. The amount of slurry in the carbon control tank 7 is also fixed, so the charcoal density can be calculated, and the measurement is convenient. By setting up multiple groups of carbon control components, the carbon density in all the leaching and absorption tanks 1 can be measured at the same time, and then the carbon density in all the leaching and absorption tanks 1 can be adjusted at the same time without stopping the flow of the slurry. When the carbon density is low, the corresponding flow control valve 3 91 is opened to allow the carbon powder to enter the corresponding leaching and absorption tank 1 to adjust the carbon density. It should be noted that when the slurry is flowing, the slurry with low carbon density will affect the carbon density adjustment of the next group of slurry, so it is necessary to open the flow control valve 3 91 on the next group of leaching and absorption tanks 1 at the same time to replenish the corresponding amount of carbon powder; When the carbon seal is high, the flow control valve 72 and the slurry discharge valve 76 between the immersion tank 1 and the next group of immersion tanks 1 are opened, part of the slurry passes through the carbon control tank 7, and then is filtered through the filter screen 711 to filter out excess carbon powder, and the filtered slurry enters the next group of immersion tanks 1, so that the slurry carbon powder density entering the next group of immersion tanks 1 per unit time meets the standard, and the flow control valve 2 81 on the immersion tank 1 is opened, and the water supply pipe 8 adds water to the immersion tank 1. During the process of adding water, the carbon powder density in the immersion tank 1 changes, so according to the amount of water added, the opening size of the flow control valve 72 is controlled to control the amount of slurry entering the carbon control tank 7, to ensure that the slurry carbon density entering the next immersion tank 1 meets the requirements, will not affect the carbon density adjustment in the next immersion tank 1, and the adjustment quality is high.

[0020] The present invention can not only automatically detect the carbon density but also reduce the carbon density by setting the carbon control component. It has strong functionality and compact structure. At the same time, it can synchronously adjust the carbon density of the slurry inside multiple groups of leaching and absorption tanks 1 at one time without stopping the flow of the slurry, and has high gold extraction efficiency.

[0021] Embodiment 2, based on the above embodiment, further includes that a stirring shaft 4 is provided inside the immersion and absorption tank 1. The stirring shaft 4 is provided to make the slurry immersion more complete and the subsequent adjustment of the carbon density is more uniform.

[0022] Embodiment 3, based on the above embodiment, further includes that the bottom of the carbon control tank 7 is designed to be funnel-shaped, and the slurry can be discharged faster through this design.

[0023] Embodiment 4, based on the above embodiment, further includes that a flushing pipe 73 is provided on the top of the carbon control canister 7 , the flushing pipe 73 is connected to the water pipe 2 , and a flushing valve 74 is fixedly installed inside the flushing pipe 73 .

[0024] By opening the flushing valve 74, the water in the water pipe 2 enters the carbon control tank 7 through the flushing pipe 73 to flush the inner wall of the carbon control tank 7 to prevent the ore pulp from remaining on the inner wall, thereby improving the measurement accuracy of the carbon density.

[0025] Embodiment 5, based on the above embodiment, further includes that a sealing rubber ring 713 is provided at the bottom of the slurry discharge port and the top of the slurry discharge pipe 77 .

[0026] Furthermore, the outer surface of the sealing rubber ring 713 is designed to be conical.

[0027] With this design, when the filter tube 710 enters the filtering interval, the sealing rubber ring 713 can be squeezed at the top and bottom of the filter tube 710, and the sealing effect is good.

[0028] Embodiment 6, on the basis of the above embodiment, further includes that the flip motor 79 adopts a three-phase asynchronous motor. Through this design, after the carbon powder height detection is completed, the flip motor 79 is controlled to rotate, and the flip motor 79 drives the filter tube 710 to flip and dump the carbon powder. Then, the flip motor 79 is controlled to repeatedly rotate forward and reverse, and the flip motor 79 drives the filter tube 710 to swing and throw out the internal carbon powder, so as to prevent the residual carbon powder in the filter tube 710 and will not affect the subsequent detection.

[0029] Embodiment 7, the control method of activated carbon in the whole mud cyanidation carbon slurry gold extraction process, comprises the following steps: S1. Raw material preparation: crush the gold ore into suitable particle size, and then use a ball mill to grind the crushed ore to make the ore particles finer and increase the exposure area of ​​gold; S2, leaching: the ground slurry and sodium cyanide solution are added to the leaching tank 1 for mixing and cyanide leaching. After leaching, activated carbon is added to the slurry. The activated carbon can effectively adsorb the gold cyanide complex. Then, the slurry is sequentially transported to the subsequent leaching tank 1 by the carbon extractor 5. Through multiple groups of leaching tanks, gold leaching and adsorption can be carried out in stages, thereby improving the gold recovery rate. During the transportation process, the carbon density in the slurry is detected by the carbon control component every 8 hours; S3, when the carbon density is low: it indicates that the carbon density in the first group of immersion and absorption tanks 1 is low, and the carbon supply is controlled by the flow control valve 3 91, and at the same time, the second group of immersion and absorption tanks 1 is supplied with corresponding carbon powder according to the carbon supply speed of the carbon supply device 5, so that the carbon density of the slurry entering the second group of immersion and absorption tanks 1 meets the standard; S4. When the carbon density is high: it indicates that the carbon density in the first group of immersion tanks 1 is high. The water replenishment amount is controlled by the second flow control valve 81. At the same time, the slurry inlet pipe 71 and the slurry discharge valve 76 are opened. Part of the slurry is filtered through the filter screen 711, and the filtration amount is controlled by the first flow control valve 72, so that the carbon density of the slurry entering the second group of immersion tanks 1 meets the standard.

[0030] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control device for activated carbon in a full-mud cyanidation carbon slurry gold extraction process, comprising a plurality of groups of leaching and absorption tanks (1), water pipes (2) and carbon powder pipes (3), characterized in that: The water pipe (2) is connected to the immersion and absorption tank (1) via a water supply pipe (8), a second flow control valve (81) is fixedly installed inside the water supply pipe (8), the carbon powder pipe (3) is connected to the immersion and absorption tank (1) via a carbon supply pipe (9), a third flow control valve (91) is fixedly installed inside the carbon supply pipe (9), a carbon extractor (5) is fixedly installed inside the immersion and absorption tank (1), and the discharge port of the carbon extractor (5) is connected to the next group of immersion and absorption tanks (1) via a connecting pipe (6); A carbon control assembly is arranged between adjacent immersion and absorption tanks (1), the carbon control assembly comprising a carbon control tank (7), a slurry inlet pipe (71) is arranged at the top of the carbon control tank (7), the slurry inlet pipe (71) is connected to the connecting pipe (6), a flow control valve (72) is fixedly installed inside the slurry inlet pipe (71), a liquid level sensor (75) is fixedly installed at the top of the inner part of the carbon control tank (7), a slurry discharge port is opened at the bottom of the carbon control tank (7), a slurry discharge valve (76) is fixedly installed inside the slurry discharge port, a slurry discharge pipe (77) is fixedly installed at the bottom of the slurry discharge port, and the slurry discharge pipe (77) is connected to the next group of immersion and absorption tanks (1); A filtering distance is provided between the slurry discharge pipe (77) and the slurry discharge port; a distance measuring sensor (712) is fixedly mounted on the left side of the bottom of the carbon control tank (7); a telescopic cylinder (78) is fixedly mounted on the right side of the bottom of the carbon control tank (7); a turning motor (79) is fixedly mounted on the left side of the telescopic end of the telescopic cylinder (78); a filter tube (710) is fixedly mounted on the left side of the output end of the turning motor (79); the filter tube (710) can be just inserted into the filtering distance; a filter screen (711) is fixedly mounted inside the filter tube (710).

2. The control device for activated carbon in the whole mud cyanide carbon slurry gold extraction process according to claim 1, characterized in that: A stirring shaft (4) is arranged inside the immersion and absorption tank (1).

3. The control device for activated carbon in the whole mud cyanidation carbon slurry gold extraction process according to claim 1, characterized in that: The bottom of the carbon control tank (7) is designed to be funnel-shaped.

4. The control device for activated carbon in the full-mud cyanidation carbon slurry gold extraction process according to claim 3 is characterized in that: A flushing pipe (73) is provided on the top of the carbon control canister (7), the flushing pipe (73) is connected to the water pipe (2), and a flushing valve (74) is fixedly installed inside the flushing pipe (73).

5. The control device for activated carbon in the whole mud cyanide carbon slurry gold extraction process according to claim 1, characterized in that: The bottom of the slurry discharge port and the top of the slurry discharge pipe (77) are both provided with sealing rubber rings (713).

6. The control device for activated carbon in the full-mud cyanidation carbon slurry gold extraction process according to claim 5, characterized in that: The outer surface of the sealing rubber ring (713) is designed to be conical.

7. The control device for activated carbon in the whole mud cyanidation carbon slurry gold extraction process according to claim 1, characterized in that: The turning motor (79) is a three-phase asynchronous motor.

8. A method for controlling activated carbon in a full-mud cyanidation carbon slurry gold extraction process, using the device for controlling activated carbon in a full-mud cyanidation carbon slurry gold extraction process as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Raw material preparation: crush the gold ore into suitable particle size, and then use a ball mill to grind the crushed ore to make the ore particles finer and increase the exposure area of ​​gold; S2, leaching: adding the ground ore pulp and sodium cyanide solution to the leaching tank (1) for mixing and cyanide leaching. After leaching, adding activated carbon to the ore pulp. The activated carbon can effectively adsorb the gold cyanide complex. Then, the ore pulp is sequentially transported to the subsequent leaching tanks (1) by using the carbon extractor (5). Through multiple groups of leaching tanks, gold leaching and adsorption can be carried out in stages, thereby improving the gold recovery rate. During the transportation process, the carbon density in the ore pulp is detected by the carbon control component every 8 hours. S3, when the carbon density is low: it indicates that the carbon density in the first group of immersion and absorption tanks (1) is low, and the carbon supply amount is controlled by the flow control valve 3 (91), and at the same time, the second group of immersion and absorption tanks (1) is supplemented with corresponding carbon powder according to the carbon supply speed of the carbon supply device (5), so that the carbon density of the slurry entering the second group of immersion and absorption tanks (1) meets the standard; S4. When the carbon density is high: it indicates that the carbon density in the first group of immersion tanks (1) is high. The water replenishment amount is controlled by the second flow control valve (81). At the same time, the slurry inlet pipe (71) and the slurry discharge valve (76) are opened. Part of the slurry is filtered through the filter screen (711). The filtration amount is controlled by the first flow control valve (72) so that the carbon density of the slurry entering the second group of immersion tanks (1) meets the standard.

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