Tungsten bulk concentrate acid leaching equipment and acid leaching method

Abstract

The invention discloses tungsten bulk concentrate acid leaching equipment and an acid leaching method, and relates to the technical field of acid leaching equipment. A plurality of same reaction cavities are formed in the reaction frame, a liquid discharging pipe is arranged at the bottom of each reaction cavity, and a first valve is arranged on each liquid discharging pipe; a discharging groove is formed in the reaction cavity, and a detachably mounted solid material moving part is mounted in the discharging groove; an airflow detector and a liquid inlet pipe are mounted at the top of the reaction frame, and the liquid inlet pipe extends into the reaction cavity; a gas flow outlet is formed in the reaction cavity, is connected with a gas pipeline and is communicated with a gas flow detector; a separation pipeline is arranged between every two adjacent reaction cavities, and a valve II is mounted on each separation pipeline; the reaction frame is also connected with a cleaning pipeline; and an air inlet is formed outside the group of reaction cavities at the end part of the reaction frame. The invention solves the technical problem of low efficiency of a single cavity and a single experiment adopted by the existing acid leaching equipment.

Description

Technical Field

[0001] The invention relates to the technical field of acid leaching equipment, in particular to tungsten mixed concentrate acid leaching equipment and an acid leaching method. Background Art

[0002] For acid leaching test of concentrate, it is necessary to remove calcium carbonate in the concentrate by hydrochloric acid solution to improve the tungsten grade of the concentrate. At present, enterprises have a variety of raw materials, which need to be tested and acid leaching tests of hydrochloric acid of different concentrations are carried out to examine the loss of tungsten in the filtrate during the test, the improvement of the quality of tungsten concentrate, and the consumption of hydrochloric acid and water. Therefore, corresponding experimental acid leaching equipment is needed for testing.

[0003] Acid leaching equipment requires the addition of solid raw materials on the one hand, and the continuous addition of hydrochloric acid solution on the other hand. Currently, most acid leaching equipment uses a single chamber and a single experiment to work, which takes too long for large-scale sampling tests; secondly, after the solid raw materials are added, the acid leaching equipment needs to be opened to take out the materials after the reaction is complete, which is inconvenient.

[0004] Therefore, we provide tungsten mixed concentrate acid leaching equipment and acid leaching method to solve the above problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The tungsten mixed concentrate acid leaching equipment comprises a reaction rack, a plurality of identical reaction chambers are arranged in the reaction rack, a liquid down pipe is arranged at the bottom of the reaction chamber, a valve is arranged on the liquid down pipe; a discharge trough is opened on the reaction chamber, and a detachable solid material moving part is installed in the discharge trough;

[0007] An airflow detector and a liquid inlet pipe are installed on the top of the reaction rack, and the liquid inlet pipe extends into the reaction chamber;

[0008] The reaction chamber is provided with an air flow outlet and connected with a gas pipeline, and is communicated with an air flow detector; a separation pipeline is provided between adjacent reaction chambers, and a valve 2 is installed on the separation pipeline;

[0009] A cleaning pipeline is also connected to the reaction rack; an air inlet is arranged outside a group of reaction chambers at the end of the reaction rack.

[0010] In a further technical solution, a cover plate is installed on the top of the reaction chamber, and a position frame is detachably installed on the cover plate, and the airflow detector is installed on the position frame;

[0011] The cover plate is provided with a rotating shaft and a liquid inlet pipe, a stirring blade is provided at the bottom of the rotating shaft, and the rotating shaft is located in the middle of the cover plate;

[0012] The position frame is bent upward, and a fixing plate is installed on the position frame, and a driving motor is installed on the fixing plate, the output end of the driving motor is set downward, and a driving gear is installed on the output end;

[0013] The cover plate is provided with a lateral opening on one side facing the rotating shaft, and the driving gear is adapted to extend out of the lateral opening and be installed with double-sided racks, both sides of the double-sided racks are provided with teeth, and one side is meshed with the driving gear;

[0014] A secondary gear is installed on the top of the cover plate where the rotating shaft extends out, and the secondary gear is meshed with the tooth profile on the other side of the double-sided racks.

[0015] In a further technical solution, a fixing strip is installed outside the cover plate, the fixing strip is bent and a slide strip is arranged at the bottom; a slide groove is opened on the upper side of the double-sided rack, and the slide strip and the slide groove are adapted;

[0016] The fixing bars are provided in two groups and are located at the upper and lower sides of the double-sided racks.

[0017] In a further technical solution, a tooth plate is provided on one side of the double-sided rack relative to the cover plate, and a travel switch is installed on the cover plate;

[0018] Protection plates are provided on both sides of the travel switch, and the protection plates are fixedly connected to the cover plate; an open groove is opened on the protection plate, and the touch rod of the travel switch extends out of the open groove. When the double-sided racks move, they are suitable for movably squeezing the touch rod to trigger the travel switch and realize controlling the rotation direction of the drive motor.

[0019] In a further technical solution, the solid material moving member comprises a connecting plate, on which a bearing mesh plate is mounted, and the bearing mesh plate is suitable for extending into the reaction chamber and for bearing the acid leaching fixed raw material;

[0020] A connecting concave ring is provided in the discharge chute, and a sealing ring edge is provided on the connecting plate. The sealing ring edge is suitable for movably abutting against the connecting concave ring; and the connecting plate is made of corrosion-resistant material.

[0021] In a further technical solution, the solid material moving member further comprises a connecting shaft, which is fixedly connected to the connecting plate; and the connecting shaft is a threaded shaft, on which a closing plate is mounted, and the closing plate is detachably connected to the reaction frame.

[0022] In a further technical solution, the closing plate includes an arc plate portion and a cylindrical portion, the notch of the discharge trough is a stepped surface, a connecting blind hole is arranged outside the discharge trough, and the arc plate portion is provided with a mounting hole adapted to the connecting blind hole, and the locking bolts are suitable for mounting therebetween;

[0023] The connecting shaft is also provided with a locking cylinder, the locking cylinder is provided with an internal thread and rotates on the connecting shaft, and the locking cylinder is suitable for the thread to rotate and abut against the cylindrical part;

[0024] A carrying handle is installed on the side of the connecting shaft away from the reaction frame.

[0025] The acid leaching method of tungsten mixed concentrate acid leaching equipment comprises the following steps:

[0026] Step 1, placing the ore raw materials on the bearing mesh plate, and grouping the mixed ore, raw ore one and raw ore two by mass, and the mixed ore adopts a 1:1 mass distribution; three groups of reaction chambers are set, and are arranged in parallel;

[0027] Step 2, close valve 1, and introduce nitrogen from the external gas source to discharge the internal gas; connect the gas flow detector to the gas pipeline of the gas flow outlet to observe whether there is gas discharge;

[0028] Step 3, install the connecting plate on the discharge trough, abut the sealing ring edge against the connecting concave ring, and rotate the locking cylinder to abut the closing plate outside the discharge trough to achieve a locking connection;

[0029] Step 4, close valve 2, open the liquid inlet pipe, and pour a dilute hydrochloric acid solution of the same concentration into the liquid inlet pipe. A solenoid valve flow meter is installed on the liquid inlet pipe, which is suitable for real-time monitoring of flow and opening and closing of the liquid inlet pipe;

[0030] Step 5, open the solenoid valve flowmeter and add dilute hydrochloric acid solution drop by drop; observe whether there is gas discharge, and continue to add if it is met;

[0031] Step 6, turn on the drive motor to open the driving gear to drive the two-sided racks to move, and synchronously drive the three sets of rotating shafts to rotate to achieve stirring; and the two-sided racks collide and squeeze the travel switch contact rod when moving, completing the reverse rotation of the driving gear;

[0032] Step 7, a float flowmeter is installed at the outlet of the airflow detector, and when the float does not float, the addition of the dilute hydrochloric acid solution is stopped to complete the reaction;

[0033] Step 8, open valve 1 to discharge from the lower liquid pipe at the bottom of each reaction chamber, and filter the liquid discharged from the lower liquid pipe to achieve solid-liquid separation;

[0034] Step 9, remove the sealing plate to complete the removal of solid particles, complete the measurement of solid particles in the experiment and particles in step 8, and record the flow rate of the solenoid valve flow meter;

[0035] Step 10, open valve 2, pass clean water into the cleaning pipe, and discharge it after filling multiple reaction chambers; the air inlet is normally closed and a blocking block is installed; open the blocking block, and pass hot air from the air inlet to achieve drying treatment;

[0036] Step 11, repeat steps 1-10 to complete the dilute hydrochloric acid experiment with different concentrations different from step 4, and record the mass of residual solid particles and the flow rate of the dilute hydrochloric acid solution used.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The present invention is provided with multiple reaction chambers for synchronous reaction, so that the synchronous reaction effect is easy to observe. The synchronous stirring effect is achieved by the gear rack set at the top, which can reduce the cost of equipment use and achieve the synchronous test effect. The present invention is provided with a solid material moving part to achieve the effect of facilitating material discharge and facilitating material retrieval after the reaction, which can achieve the effect of quick pick-up and quick release and facilitate test sampling. The present invention is provided with multiple groups of reaction chambers that can be connected to each other to achieve the effect of rapid flushing and drying, which can achieve a convenient and effective technical effect for continuous use required for tests. The present invention is provided with double-sided racks to achieve the synchronous rotation of the driving gear and the auxiliary gear, and the travel switch provided in the middle of the position frame can achieve the technical effect of extrusion-trigger-steering, and can achieve a reciprocating low-speed rotation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a front schematic diagram of the acid leaching equipment of the present invention;

[0040] Figure 2 It is a schematic top view of the acid leaching equipment of the present invention;

[0041] Figure 3 It is a top cross-sectional schematic diagram of the acid leaching equipment of the present invention;

[0042] Figure 4 for Figure 3 A magnified view of part A;

[0043] Figure 5 for Figure 3 A magnified view of part B;

[0044] Figure 6 It is a schematic diagram of the structure of the reaction chamber in the present invention;

[0045] Figure 7 It is a schematic diagram of the structure of the solid material moving part outside the discharge chute of the present invention;

[0046] Figure 8 It is a schematic structural diagram of the fixing strip of the present invention.

[0047] In the figure:

[0048] 1. Reaction rack; 2. Reaction chamber; 4. Downstream liquid pipe; 5. Valve 1; 6. Discharge trough; 7. Air flow detector; 8. Liquid inlet pipe; 9. Gas pipeline; 10. Separation pipeline; 11. Valve 2; 12. Cleaning pipeline; 13. Air inlet; 15. Cover plate; 16. Position rack; 17. Rotating shaft; 18. Stirring blade; 19. Driving motor; 20. Driving gear; 21. Side port; 22. Double-sided rack; 23. Sub-gear; 24. Fixed bar; 25. Slide bar; 26. Slide groove; 27. Tooth plate; 28. Travel switch; 29. ​​Protection plate; 30. Connecting plate; 31. Load-bearing mesh plate; 32. Connecting concave ring; 33. Solenoid valve flowmeter; 34. Connecting shaft; 35. Arc plate part; 36. Cylinder part; 37. Mounting hole; 38. Locking cylinder; 39. Carrying handle. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] See also Figure 1-8 The present invention provides a technical solution, a tungsten mixed concentrate acid leaching equipment, such as Figure 1 As shown, it comprises a reaction rack 1, in which a plurality of identical reaction chambers 2 are arranged, a liquid down pipe 4 is arranged at the bottom of the reaction chamber 2, and a valve 5 is arranged on the liquid down pipe 4; a discharge trough 6 is opened on the reaction chamber 2, and a detachable solid material moving part is installed in the discharge trough 6;

[0051] An airflow detector 7 and a liquid inlet pipe 8 are installed on the top of the reaction rack 1, and the liquid inlet pipe 8 extends into the reaction chamber 2; an airflow outlet is provided on the reaction chamber 2 and is connected to a gas pipeline 9, which is in communication with the airflow detector 7; a separation pipeline 10 is provided between adjacent reaction chambers 2, and a valve 11 is installed on the separation pipeline 10; a cleaning pipeline 12 is also connected to the reaction rack 1; and an air inlet 13 is provided outside a group of reaction chambers 2 at the end of the reaction rack 1.

[0052] Combination Figure 1 , 2 Figure 6 A cover plate 15 is installed on the top of the reaction chamber 2, and a position frame 16 is detachably installed on the cover plate 15, and the airflow detector 7 is installed on the position frame 16; a rotating shaft 17 and a liquid inlet pipe 8 are installed on the cover plate 15, and a stirring blade 18 is installed at the bottom of the rotating shaft 17, and the rotating shaft 17 is in the middle position of the cover plate 15;

[0053] The position frame 16 is bent upward, and a fixing plate is installed on the position frame 16, and a driving motor 19 is installed on the fixing plate. The output end of the driving motor 19 is set downward, and a driving gear 20 is installed on the output end; the driving motor is a low-speed motor, and a circuit reversal is set to control the rotation direction of the driving motor, and it is controlled by the opening and closing of the travel switch.

[0054] The cover plate 15 is provided with a lateral opening 21 on one side of the rotating shaft 17, and the driving gear 20 is suitable for extending out of the lateral opening 21 and is installed with double-sided racks 22, both sides of the double-sided racks 22 are provided with teeth, and one side is meshed with the driving gear 20; a sub-gear 23 is installed at the top of the cover plate 15 extending from the rotating shaft 17, and the sub-gear 23 is meshed with the teeth on the other side of the double-sided racks 22.

[0055] Combination Figure 2 and Figure 8 As shown, a fixing bar 24 is installed outside the cover plate 15, and the fixing bar 24 is bent and a sliding bar 25 is arranged at the bottom; a sliding groove 26 is opened on the upper side of the double-sided rack 22, and the sliding bar 25 and the sliding groove 26 are adapted to each other; the fixing bar 24 is arranged in two groups and is located on the upper and lower sides of the double-sided rack 22.

[0056] like Figure 5 As shown, a tooth plate 27 is provided on one side of the double-sided rack 22 relative to the cover plate 15, and a travel switch 28 is installed on the cover plate 15; protective plates 29 are provided on both sides of the travel switch 28, and the protective plates 29 are fixedly connected to the cover plate 15; an open slot is provided on the protective plate 29, and the contact rod of the travel switch 28 extends out of the open slot. When the double-sided rack 22 moves, it is suitable for moving the contact rod to trigger the travel switch 28 and control the rotation direction of the drive motor 19. There are two groups of travel switches, and a group of tooth plates is provided in the middle to achieve a reciprocating extrusion-trigger-steering continuous transmission effect.

[0057] like Figure 7As shown, the solid material moving part includes a connecting plate 30, on which a load-bearing mesh plate 31 is installed, and the load-bearing mesh plate 31 is suitable for extending into the reaction chamber 2 and suitable for carrying the acid leaching fixed raw materials; a connecting concave ring 32 is provided in the discharge trough 6, and a sealing ring edge is provided on the connecting plate 30, and the sealing ring edge is suitable for movably abutting in the connecting concave ring 32; and the connecting plate 30 is made of corrosion-resistant material. The corrosion-resistant material can be an alloy material or a composite ceramic material. The solid material moving part also includes a connecting shaft 34, and the connecting shaft 34 is fixedly connected to the connecting plate 30; and the connecting shaft 34 is a threaded shaft, and a closing plate is installed on the connecting shaft 34, and the closing plate is detachably connected to the reaction frame 1. The closing plate includes an arc plate portion 35 and a cylindrical portion 36. The notch of the discharge trough 6 is a stepped surface. A connecting blind hole is arranged outside the discharge trough 6, and the arc plate portion 35 is provided with a mounting hole 37 adapted to the connecting blind hole, and they are suitable for mounting a locking bolt to connect. A locking cylinder 38 is also installed on the connecting shaft 34. The locking cylinder 38 is provided with an internal thread and rotates on the connecting shaft 34. The locking cylinder 38 is suitable for threaded rotation to abut against the cylindrical portion 36. A carrying handle 39 is installed on the side of the connecting shaft 34 away from the reaction rack 1.

[0058] The acid leaching method of tungsten mixed concentrate acid leaching equipment comprises the following steps:

[0059] Step 1, placing the ore raw materials on the supporting mesh plate 31, and grouping the mixed ore, raw ore 1 and raw ore 2 with equal mass, and the mixed ore adopts a 1:1 mass distribution; the reaction chamber 2 is provided with three groups, and they are arranged in parallel;

[0060] Step 2, close valve 1 5, introduce nitrogen from the external gas source to discharge the internal gas; connect the gas flow detector 7 to the gas pipeline 9 of the gas flow outlet to observe whether there is gas discharge;

[0061] Step 3, install the connecting plate 30 on the discharge trough 6, the sealing ring edge abuts against the connecting concave ring 32, and rotate the locking cylinder 38 to abut the closing plate outside the discharge trough 6 to achieve a locking connection;

[0062] Step 4, close valve 2 11, open the liquid inlet pipe 8, pour the dilute hydrochloric acid solution of the same concentration into the liquid inlet pipe 8, and install an electromagnetic valve flow meter 33 on the liquid inlet pipe 8, which is suitable for real-time monitoring of flow and opening and closing the liquid inlet pipe 8;

[0063] Step 5, open the solenoid valve flowmeter 33, and add the dilute hydrochloric acid solution drop by drop; observe whether there is gas discharge, and continue to add if it is met;

[0064] Step 6, turn on the drive motor 19 to open the driving gear 20 to drive the double-sided racks 22 to move, and synchronously drive the three sets of rotating shafts 17 to rotate to achieve stirring; and the double-sided racks 22 collide and squeeze the travel switch 28 touch rod when moving, completing the reverse rotation of the driving gear 20;

[0065] Step 7, a float flow meter is installed at the outlet of the airflow detector 7, and when the float does not float, the addition of the dilute hydrochloric acid solution is stopped to complete the reaction;

[0066] Step 8, open valve 1 5, discharge from the lower liquid pipe 4 at the bottom of each reaction chamber 2, and filter the liquid discharged from the lower liquid pipe 4 to achieve solid-liquid separation;

[0067] Step 9, remove the sealing plate to complete the removal of solid particles, complete the measurement of solid particles in the experiment and particles in step 8, and record the flow rate of the solenoid valve flow meter 33;

[0068] Step 10, open valve 2 11, pass clean water into the cleaning pipe 12, and discharge it after filling multiple reaction chambers 2; the air inlet 13 is normally closed and equipped with a blocking block; open the blocking block, and pass hot air from the air inlet 13 to achieve drying treatment;

[0069] Step 11, repeat steps 1-10 to complete the dilute hydrochloric acid experiment with different concentrations different from step 4, and record the mass of residual solid particles and the flow rate of the dilute hydrochloric acid solution used.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0071] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Tungsten mixed concentrate acid leaching equipment, characterized in that: The invention comprises a reaction rack (1), wherein a plurality of identical reaction chambers (2) are arranged in the reaction rack (1), a liquid down pipe (4) is arranged at the bottom of the reaction chamber (2), and a valve (5) is arranged on the liquid down pipe (4); a discharge trough (6) is opened on the reaction chamber (2), and a detachable solid material moving part is installed in the discharge trough (6); An airflow detector (7) and a liquid inlet pipe (8) are installed on the top of the reaction rack (1), and the liquid inlet pipe (8) extends into the reaction chamber (2); The reaction chamber (2) is provided with an air flow outlet and is connected to a gas pipeline (9) and is in communication with an air flow detector (7); a separation pipeline (10) is provided between adjacent reaction chambers (2), and a valve 2 (11) is installed on the separation pipeline (10); A cleaning pipeline (12) is also connected to the reaction rack (1); and an air inlet (13) is arranged outside a group of reaction chambers (2) at the end of the reaction rack (1).

2. The tungsten mixed concentrate acid leaching equipment according to claim 1 is characterized in that: A cover plate (15) is installed on the top of the reaction chamber (2), and a position frame (16) is detachably installed on the cover plate (15), and the airflow detector (7) is installed on the position frame (16); A rotating shaft (17) and a liquid inlet pipe (8) are installed on the cover plate (15); a stirring blade (18) is installed at the bottom of the rotating shaft (17), and the rotating shaft (17) is located in the middle of the cover plate (15); The position frame (16) is bent upward, a fixing plate is installed on the position frame (16), a driving motor (19) is installed on the fixing plate, an output end of the driving motor (19) is arranged downward, and a driving gear (20) is installed on the output end; The cover plate (15) is provided with a lateral opening (21) on one side facing the rotating shaft (17), and the driving gear (20) is adapted to extend out of the lateral opening (21) and be provided with double-sided racks (22), both sides of the double-sided racks (22) are provided with teeth, and one side is meshed with the driving gear (20); A sub-gear (23) is installed on the top of the rotating shaft (17) extending out of the cover plate (15), and the sub-gear (23) is meshed with the teeth on the other side of the double-sided rack (22).

3. The tungsten mixed concentrate acid leaching equipment according to claim 1 is characterized in that: The cover plate (15) is provided with a fixing strip (24) on the outside, the fixing strip (24) is bent and a sliding strip (25) is provided at the bottom; a sliding groove (26) is provided on the upper side of the racks (22) on both sides, and the sliding strip (25) and the sliding groove (26) are adapted to each other; The fixing bars (24) are provided in two groups and are located at the upper and lower sides of the double-sided racks (22).

4. The tungsten mixed concentrate acid leaching equipment according to claim 3 is characterized in that: A tooth plate (27) is provided on one side of the double-sided rack (22) opposite to the cover plate (15), and a travel switch (28) is installed on the cover plate (15); Protection plates (29) are provided on both sides of the travel switch (28), and the protection plates (29) are fixedly connected to the cover plate (15); an opening slot is provided on the protection plate (29), and a contact rod of the travel switch (28) extends out of the opening slot; when the double-sided racks (22) move, they are suitable for movably squeezing the contact rod to trigger the travel switch (28) and realize controlling the rotation direction of the drive motor (19).

5. The tungsten mixed concentrate acid leaching equipment according to claim 4 is characterized in that: The solid material moving member comprises a connecting plate (30), a bearing mesh plate (31) is mounted on the connecting plate (30), and the bearing mesh plate (31) is suitable for extending into the reaction chamber (2) and for bearing the acid leaching fixed raw material; A connecting concave ring (32) is provided in the discharge chute (6), and a sealing ring edge is provided on the connecting plate (30), wherein the sealing ring edge is suitable for movably abutting against the connecting concave ring (32); and the connecting plate (30) is made of corrosion-resistant material.

6. The tungsten mixed concentrate acid leaching equipment according to claim 4, characterized in that: The solid material moving member further comprises a connecting shaft (34), wherein the connecting shaft (34) is fixedly connected to the connecting plate (30); and the connecting shaft (34) is a threaded shaft, and a closing plate is mounted on the connecting shaft (34), and the closing plate is detachably connected to the reaction frame (1).

7. The tungsten mixed concentrate acid leaching equipment according to claim 6, characterized in that: The closing plate comprises an arc plate portion (35) and a cylindrical portion (36); the notch of the discharge trough (6) is a stepped surface; a connecting blind hole is arranged outside the discharge trough (6); and the arc plate portion (35) is provided with a mounting hole (37) matched with the connecting blind hole, and the locking bolts are suitable for mounting therebetween; A locking cylinder (38) is also installed on the connecting shaft (34). The locking cylinder (38) is provided with an internal thread and rotates on the connecting shaft (34). The locking cylinder (38) is suitable for rotating the thread to abut against the cylindrical portion (36). A carrying handle (39) is installed on the side of the connecting shaft (34) away from the reaction frame (1).

8. A tungsten mixed concentrate acid leaching method using the tungsten mixed concentrate acid leaching equipment according to claim 7, characterized in that: The following steps are involved: Step 1, placing the ore raw materials on the supporting mesh plate (31), and grouping the mixed ore, raw material ore 1 and raw material ore 2 with equal mass, and the mixed ore adopts a 1:1 mass distribution; the reaction chamber (2) is provided with three groups, and is arranged in parallel; Step 2, close valve 1 (5), introduce nitrogen from the external gas source to discharge the internal gas; connect the gas flow detector (7) to the gas pipeline (9) of the gas flow outlet to observe whether there is gas discharge; Step 3, installing the connecting plate (30) on the discharge trough (6), the sealing ring edge abuts against the inside of the connecting concave ring (32), and rotating the locking cylinder (38) to abut the closing plate outside the discharge trough (6) to achieve a locking connection; Step 4, close valve 2 (11), open the liquid inlet pipe (8), and pour a dilute hydrochloric acid solution of the same concentration into the liquid inlet pipe (8). An electromagnetic valve flow meter (33) is installed on the liquid inlet pipe (8), which is suitable for real-time monitoring of flow and opening and closing the liquid inlet pipe (8); Step 5, open the solenoid valve flow meter (33) and add dilute hydrochloric acid solution drop by drop; Observe whether there is gas discharge, and continue to add if it is met; Step 6, turning on the driving motor (19) to open the driving gear (20) to drive the two-sided racks (22) to move, and synchronously drive the three sets of rotating shafts (17) to rotate to achieve stirring; and the two-sided racks (22) collide and squeeze the travel switch (28) touch rod when moving, completing the reverse rotation of the driving gear (20); Step 7, a float flow meter is installed at the outlet of the airflow detector (7), and when the float does not float, the addition of the dilute hydrochloric acid solution is stopped to complete the reaction; Step 8, open valve 1 (5) to discharge from the lower liquid pipe (4) at the bottom of each reaction chamber (2), and filter the liquid discharged from the lower liquid pipe (4) to achieve solid-liquid separation; Step 9, remove the sealing plate to complete the removal of solid particles, complete the measurement of solid particles in the experiment and particles in step 8, and record the flow rate of the solenoid valve flow meter (33); Step 10, open valve 2 (11), pass clean water into the cleaning pipe (12), and discharge it after filling multiple reaction chambers (2); the air inlet (13) is normally closed and equipped with a blocking block; open the blocking block, and pass hot air from the air inlet (13) to achieve drying treatment; Step 11, repeat steps 1-10 to complete the dilute hydrochloric acid experiment with different concentrations different from step 4, and record the mass of residual solid particles and the flow rate of the dilute hydrochloric acid solution used.

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