Clean production device and process for extracting arsenic

Abstract

The invention provides a clean production device and process for arsenic extraction, and relates to the technical field of arsenic extraction production devices, the clean production device comprises an ore crushing module, an ore grinding module, a leaching module, a solution purification module, an arsenic extraction module and an arsenic refining module; the ore crushing module comprises a crushing tank, an opening in the top end of the crushing tank is tightly covered with a cover plate, and a crushing roller frame is rotationally mounted in the center of the interior of the crushing tank; a lifting bottom support is slidably mounted on the bottom section of a crushing roller frame driving rotating shaft, and the top end section of the crushing roller frame driving rotating shaft is rotationally connected with the center part of a cover plate in a penetrating mode. Two six-edge positioning shafts are welded to the bottom section of the circumferential inner wall of the crushing tank in a bilateral symmetry mode. According to the ore crushing device, large ore fragments accumulated on the lifting bottom support after preliminary crushing can be vibrated and raised to make contact with the crushing roller frame for multiple times to be fully crushed, the size of the ore fragments is reduced, and subsequent grinding machining of the ore fragments is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of arsenic extraction production equipment, and in particular to a clean production equipment and process for extracting arsenic. Background Art

[0002] The clean production equipment and process for extracting arsenic aims to extract arsenic efficiently while minimizing the impact on the environment and the harm to human health. This equipment and process not only focuses on the efficiency of arsenic extraction, but also emphasizes environmental protection, resource recovery and operational safety.

[0003] In the crushing module of the existing arsenic production device, the bottom of the crushing container is directly welded and fixed to the bottom opening of the crushing container. As a result, after the ore is initially crushed into large pieces, it will directly fall and accumulate on the bearing plate and the bottom space of the crushing container, and cannot be fully crushed repeatedly, resulting in a large volume of the prepared ore fragments, which is not conducive to subsequent grinding processing; In addition, although some crushing containers are equipped with mechanisms at the bottom or on the supporting plates to lift and crush the initially crushed ore blocks for multiple times, these mechanisms often require additional manual operation or require additional driving force sources, which makes the operation more troublesome or is not conducive to reducing the manufacturing cost of the device and improving market competitiveness. Summary of the invention

[0004] In view of this, the present invention provides a clean production device and process for extracting arsenic to solve the problem that after the ore is initially crushed into large pieces, it directly falls and accumulates on the supporting plate and the bottom space of the crushing container, and cannot be fully crushed repeatedly, resulting in a large volume of the prepared ore fragments, which is not conducive to subsequent grinding processing.

[0005] The present invention provides a clean production device and process for extracting arsenic, which specifically comprises: an ore crushing module, an ore grinding module, a leaching module, a solution purification module, an arsenic extraction module and an arsenic refining module, wherein the above modules are connected in series in the production process of extracting arsenic; The ore crushing module comprises: a crushing pot, the top opening of the crushing pot is tightly covered with a cover plate, and a crushing roller frame is rotatably installed at the inner center of the crushing pot; a lifting base is slidably installed on the bottom section of the crushing roller frame driving shaft, and the top section of the crushing roller frame shaft is rotatably connected with the center part of the cover plate; two hexagonal positioning shafts are symmetrically welded on the bottom section of the circumferential inner wall of the crushing pot, and a rectangular driving frame is slidably installed on the two hexagonal positioning shafts, and the rectangular driving frame has a rectangular structure, and two rows of teeth are symmetrically arranged on the front and rear side support plates of the rectangular driving frame; two connecting rods are symmetrically rotatably connected on the middle parts of the front and rear side support plates of the rectangular driving frame, and the top ends of the two connecting rods are rotatably connected with the bottom of the lifting base; an incomplete gear is set on the bottom end of the crushing roller frame driving shaft, and the incomplete gear is alternately meshed with the two rows of teeth on the rectangular driving frame for transmission; two circular feeding openings are symmetrically opened on the lifting base.

[0006] Furthermore, the crushing roller frame as a whole is composed of a driving shaft and three circles of crushing teeth welded around the driving shaft.

[0007] Furthermore, a motor is fixedly installed at the center of the top of the cover plate, and the top part of the driving shaft passes through the cover plate and is connected to the motor shaft for transmission; A feed pipe and a dust suction fan are respectively fixedly installed at the top of the cover plate at the positions on both sides of the motor, and the feed pipe and the cover plate are both connected with the crushing tank.

[0008] Furthermore, two plugging covers are screwed and sealed in the two circular feed openings, the plugging covers are circular in structure, and a protruding disk with a circular structure is arranged at the top of the plugging cover, and an external thread is arranged on the outer circumference of the protruding disk; A plum blossom knob is welded at the center of the bottom of the plug cover.

[0009] Furthermore, two L-shaped limit plates are welded around the bottom position of the outer circle of the lifting base, a rotating circle is rotatably installed on the two L-shaped limit plates, and two sealing covers are symmetrically welded on the inner side of the rotating circle.

[0010] Furthermore, the two sealing covers are both circular in structure, and the circles can rotate to drive the two sealing covers to slide onto the bottoms of the two circular feeding openings.

[0011] Furthermore, a support frame is welded at the bottom of the rotating circle, the support frame is in a U-shaped structure, and the bottom support rod of the support frame is located close to the bottom side of the rectangular driving frame; A vertically supported driving column is welded and hoisted at the middle position of the support rod at the bottom side of the support frame, and a vertically arranged strip sliding groove is opened through the driving column.

[0012] Furthermore, a driving column is welded downwardly on the middle section of the support rod at the bottom side of the support frame; A conical aggregate cover is welded on the bottom opening of the crushing tank, a feed pipe with an annular structure is welded on the bottom opening of the conical aggregate cover, a limiting ring is welded on the bottom end of the feed pipe, and two positioning holes are provided on the outer circle of the limiting ring at an interval of 60 degrees.

[0013] Furthermore, a rotating ring is rotatably mounted on the discharge pipe, and the rotating ring is limited in rotation between the limiting ring and the conical material collecting cover; An F-shaped mounting piece with an overall horizontal support is welded on the outer circumference of the rotating ring. A driving plug plate is slidably installed on the two vertical parts of the F-shaped mounting piece through spring pushing, and the head end of the driving plug plate is slidably matched with the strip slide groove; A force-bearing plate is welded and sleeved on the middle part of the driving plug plate, and an L-shaped plug rod is welded on the top of the force-bearing plate. The horizontal rod section of the L-shaped plug rod is slidably fitted with the vertical part of the F-shaped mounting part close to the limit ring, and the head end of the horizontal rod section of the L-shaped plug rod is plug-fitted with the two positioning holes in an optional manner.

[0014] Further, the following steps are included: ① First, the arsenic-containing ore is crushed by the ore crushing module, and then the small pieces of ore formed after crushing are ground into fine ore powder by the ore grinding module; ② Then transfer the ore powder to the leaching module, and leach the ore through acidic solutions such as sulfuric acid and hydrochloric acid to dissolve arsenic into the solution. The equation of the acid leaching reaction is: As2S3+6H2SO4→2H3AsO4+3H2S+3SO2; ③. The solution containing the dissolved mineral powder is transferred to the solution purification module, and the solid impurities in the solution are removed by filtering and precipitation to ensure the purity of the solution. When performing precipitation purification, the impurities in the solution are precipitated by adding a precipitant (such as lime, iron salt, etc.), and the equation of the precipitation purification reaction is: FeCl3+3Na3AsO3→Fe(AsO3)3+3NaCl; ④. The purified solution is transferred to the arsenic extraction module. Arsenic is precipitated from the solution by adding chemical reagents (such as sodium sulfide, hydrogen sulfide, etc.) to the solution to extract crude arsenic. The reaction equation of the above chemical precipitation is: H3AsO4+3Na2S+6H2O→As2S3+6NaOH; ⑤. Finally, the extracted crude arsenic is transferred to the arsenic refining module. The crude arsenic is heated to the sublimation temperature, vaporized and then condensed, and pure arsenic is collected. The above sublimation reaction equation is: As(s)→As(g)→As(s). At this point, a complete set of arsenic extraction process has been implemented. Beneficial Effects

[0015] 1. The lifting base, two connecting rods and a rectangular drive frame are connected together to form two crank slider mechanisms. Through this mechanism, the rectangular drive frame can be slid left and right to drive the lifting base to slide and lift along the bottom section of the crushing roller frame drive shaft. The large pieces of ore fragments accumulated on the lifting base after the initial crushing will be vibrated and lifted up and contacted with the crushing roller frame for multiple times to be fully crushed, thereby reducing the volume of the ore fragments and making the prepared ore fragments more uniform in size, which is conducive to subsequent grinding processing.

[0016] 2. The incomplete gears can alternately mesh to drive the rectangular drive frame to slide left and right along the two hexagonal positioning axes, and the incomplete gears are mounted on the crushing roller frame, which enables the lifting base to be driven by the rotating crushing driving force of the crushing roller frame to vibrate and lift the ore fragments, eliminating the need to configure an additional drive motor for the vibration lifting mechanism of the device and the trouble of requiring additional manual effort to drive the vibration lifting mechanism, which is beneficial to reducing the overall cost and power consumption of the device, improving the market competitiveness of the device, reducing the labor intensity of workers, and improving the convenience of device operation.

[0017] 3. The ore fragments are discharged through two circular discharge ports. When the lifting base is driven up and down, it is beneficial to implement vibration discharge of the ore fragments, increase the discharge flow of the two circular discharge ports and reduce the probability of the two circular discharge ports being blocked.

[0018] 4. The driving column can be used to implement forward and reverse twisting drive on the circle and the two covers, and the bottom section of the driving column extends downward and extends and protrudes from the bottom side of the conical polymer cover, so that the driving column can be directly held outside the bottom of the conical polymer cover to implement twisting and switching of the two covers, eliminating the need to put hands into the conical polymer cover or to open and remove the conical polymer cover to switch the two covers. The operation is simple and efficient.

[0019] 6. Through the four L-shaped limit plates, the driving column can be driven by the lifting base to slide up and down. When the driving column is driven to slide up and down, it can slide through the discharge pipe to dredge it, reducing the probability of the discharge pipe being blocked. In addition to being used as a component for the two covers of the torsion switch, the driving column can also be used as a discharge dredging component, which has a dual-purpose effect. This can save the need to configure an additional discharge dredging component for the conical discharge pipe, which helps to simplify the overall structure of the device and reduce weight.

[0020] 6. The driving plug plate is supported horizontally and the tail end is away from the discharge port at the bottom of the discharge pipe. This allows the hand to be away from the discharge port at the bottom of the discharge pipe when the two circular discharge ports are opened and discharged by twisting the driving plug plate. Compared with the existing technology that lacks auxiliary opening and closing structures such as driving plug plates to assist in opening and closing the circular discharge ports, it can avoid the hand from directly twisting the driving column directly below the discharge port at the bottom of the discharge pipe to open and discharge the circular discharge port, preventing the ore fragments discharged from the discharge port at the bottom of the discharge pipe from directly colliding with the hand and injuring the hand, which is beneficial to improving the safety of the unloading operation of the device.

[0021] 7. The L-shaped plug rod is welded and fixedly connected to the force-bearing plate, and the spring on the driving plug plate can be used to implement push positioning. This allows the L-shaped plug rod and the driving plug plate to share a spring for push positioning, which can eliminate the need to configure an additional positioning spring for the L-shaped plug rod, helping to simplify the structure of the device to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0023] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0024] In the attached picture: Figure 1 It is a schematic diagram of the overall front structure of the first embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the overall bottom structure of the first embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the inner structure of a half-section of a crushing tank according to the first embodiment of the present invention.

[0027] Figure 4 It is a schematic diagram of the bottom side structure of the lifting base according to the first embodiment of the present invention.

[0028] Figure 5 It is a schematic diagram of the blocking cover in the disassembled state according to the first embodiment of the present invention.

[0029] Figure 6 It is a schematic diagram of the overall front structure of the second embodiment of the present invention.

[0030] Figure 7 It is a schematic diagram of the inner structure of a half-section of a crushing tank according to the second embodiment of the present invention.

[0031] Figure 8 It is a schematic diagram of the bottom side structure of the lifting base according to the second embodiment of the present invention.

[0032] Fig. 9 The second embodiment of the present invention Figure 7 A schematic diagram of the enlarged structure of part A.

[0033] Fig.10 It is a schematic diagram of the rotating disassembly state of the second embodiment of the present invention.

[0034] List of reference numerals: 1. Crushing tank; 101. Base ring; 102. Hexagonal positioning shaft; 103. Rectangular driving frame; 104. Connecting rod; 105. Conical material collecting cover; 1051. Feeding pipe; 1052. Limiting ring; 1053. Positioning hole; 107. Driving plug plate; 1071. Force plate; 1072. L-shaped plug rod; 108. Rotating ring; 1081. F-shaped mounting piece; 2. Cover plate; 201. Feed pipe; 3. Motor; 4. Crushing roller frame; 401. Incomplete gear; 5. Lifting base; 501. L-shaped limit plate; 6. plug cover; 601. protruding plate; 7. Rotating circle; 701. Covering; 702. Support frame; 703. Driving column; 7031. Strip slide; 8. Dust removal fan. DETAILED DESCRIPTION

[0035] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0036] For the convenience of description, the length direction of the entire rectangular driving frame 103 is marked as the left-right direction, and the width direction is marked as the front-back direction.

[0037] Example 1, please refer to Figures 1 to 5 As shown: The present invention provides a clean production device and process for extracting arsenic, comprising: an ore crushing module, an ore grinding module, a leaching module, a solution purification module, an arsenic extraction module and an arsenic refining module, wherein the above modules are sequentially connected in series in the production process of extracting arsenic; The ore crushing module includes: a crushing pot 1, the top opening of the crushing pot 1 is tightly covered with a cover plate 2, and a crushing roller frame 4 is rotatably installed at the inner center of the crushing pot 1; a lifting bottom bracket 5 is slidably installed on the bottom section of the driving shaft of the crushing roller frame 4, and the top section of the shaft of the crushing roller frame 4 is rotatably connected with the center part of the cover plate 2; two hexagonal positioning shafts 102 are welded symmetrically on the bottom section of the inner wall of the crushing pot 1, and a rectangular driving frame 103 is slidably installed on the two hexagonal positioning shafts 102, and the rectangular driving frame 103 is a rectangular structure, and Two rows of teeth are symmetrically arranged on the front and rear side support plates of the rectangular driving frame 103; two connecting rods 104 are symmetrically rotatably connected to the middle part of the front and rear side support plates of the rectangular driving frame 103, and the top ends of the two connecting rods 104 are rotatably connected to the bottom of the lifting base 5; an incomplete gear 401 is set at the bottom end of the driving shaft of the crushing roller frame 4, and the incomplete gear 401 is alternately meshed with the two rows of teeth on the rectangular driving frame 103 for transmission; two circular feeding openings are symmetrically opened on the lifting base 5; the circumferential outer ring of the lifting base 5 is slidably fitted with the circumferential inner wall of the crushing tank 1; The crushing roller frame 4 is used for rotating and crushing the ore; the lifting base 5 is installed by sliding movement, and the lifting base 5, two connecting rods 104 and a rectangular driving frame 103 are connected together to form two crank slider mechanisms, and then through this mechanism, the rectangular driving frame 103 is slid left and right, and the lifting base 5 can be driven to slide and lift along the bottom section of the driving shaft of the crushing roller frame 4, and the large pieces of ore fragments accumulated on the lifting base 5 after the initial crushing are vibrated and lifted up, and contacted with the crushing roller frame 4 for multiple times to be fully crushed, thereby reducing the volume of the ore fragments, making the prepared ore fragments more uniform in size, which is conducive to subsequent grinding processing. In addition, the incomplete gear 401 can alternately mesh and drive the rectangular driving frame 103 along the two hexagonal positioning shafts 10 2 slides left and right, and the incomplete gear 401 is mounted on the crushing roller frame 4, so that the lifting base 5 can be driven by the rotating crushing driving force of the crushing roller frame 4 to vibrate and lift the ore fragments, eliminating the need to configure an additional driving motor for the vibration and lifting mechanism of the device, and eliminating the trouble of requiring additional manual effort to drive the vibration and lifting mechanism, which is beneficial to reducing the overall cost and power consumption of the device, improving the market competitiveness of the device, reducing the labor intensity of workers, and improving the convenience of operation and use of the device; the ore fragments are discharged through the two circular discharge ports, and the lifting base 5 is beneficial to vibrate and discharge the ore fragments when it is driven up and down, thereby improving the discharge flow of the two circular discharge ports and reducing the probability of the two circular discharge ports being blocked.

[0038] Preferably, the crushing roller frame 4 is composed of a driving shaft and three circles of crushing teeth welded around the driving shaft; The crushing roller frame 4 implements rotational crushing on the ore through the three circles of crushing teeth thereon.

[0039] Preferably, a motor 3 is fixedly installed at the center of the top of the cover plate 2, and the top part of the driving shaft passes through the cover plate 2 and is connected to the motor 3 for transmission; a feed pipe 201 and a dust suction fan 8 are fixedly installed at the top of the cover plate 2 on both sides of the motor 3, and the feed pipe 201 and the cover plate 2 are both connected to the crushing tank 1; The motor 3 is used to rotate and drive the crushing roller frame 4, and provide the crushing roller frame 4 with a driving force for rotational crushing; the uncrushed ore raw materials are fed into the crushing tank 1 through the feed pipe 201; A conical air collecting hood is fixedly connected to the top of the dust suction fan 8, and a connecting short pipe is welded to the top of the conical air collecting hood. The connecting short pipe is connected to the centralized dust treatment system in the factory. The dust suction fan 8 can suck inside the crushing tank 1 to form a negative pressure. The crushing tank 1 is in a negative pressure state, which can prevent the dust generated in the process of ore crushing from leaking out from the inside, prevent or reduce the large amount of crushing dust from leaking and spreading in the factory, causing pollution to the factory and the air in the factory, and the dust suction fan 8 can suck and discharge the crushing dust into the centralized dust treatment system for dust removal and purification, avoiding the crushing dust from being directly discharged to pollute the atmosphere. In this way, the setting of the dust suction fan 8 enables the ore crushing module as a whole to implement clean crushing processing on the ore.

[0040] Preferably, two L-shaped vertical support plates are symmetrically welded downwardly at the bottom side of the circumferential outer wall of the crushing tank 1, and a base ring 101 is welded at the bottom of the two L-shaped vertical support plates; Preferably, two plugging covers 6 are screwed and sealed in the two circular feeding openings. The plugging covers 6 are circular in structure, and a protruding disk 601 with a circular structure is arranged at the top of the plugging cover 6. An external thread is arranged on the outer circumference of the protruding disk 601. A plum blossom knob is welded at the center of the bottom of the plugging cover 6. When the ore fragments are unloaded through the two circular discharge ports, the two plugging covers 6 need to be reversed and screwed to be removed to open the two circular discharge ports, and the plugging covers 6 can be tightened and loosened by the plum blossom knob.

[0041] Example 2, please refer to Figures 6 to 10 As shown: The present invention provides a clean production device and process for extracting arsenic, comprising: an ore crushing module, an ore grinding module, a leaching module, a solution purification module, an arsenic extraction module and an arsenic refining module, wherein the above modules are sequentially connected in series in the production process of extracting arsenic; The ore crushing module includes: a crushing pot 1, the top opening of the crushing pot 1 is tightly covered with a cover plate 2, and a crushing roller frame 4 is rotatably installed at the inner center of the crushing pot 1; a lifting bottom bracket 5 is slidably installed on the bottom section of the driving shaft of the crushing roller frame 4, and the top section of the shaft of the crushing roller frame 4 is rotatably connected with the center part of the cover plate 2; two hexagonal positioning shafts 102 are welded symmetrically on the bottom section of the inner wall of the crushing pot 1, and a rectangular driving frame 103 is slidably installed on the two hexagonal positioning shafts 102, and the rectangular driving frame 103 is a rectangular structure, and Two rows of teeth are symmetrically arranged on the front and rear side support plates of the rectangular driving frame 103; two connecting rods 104 are symmetrically rotatably connected to the middle part of the front and rear side support plates of the rectangular driving frame 103, and the top ends of the two connecting rods 104 are rotatably connected to the bottom of the lifting base 5; an incomplete gear 401 is mounted on the bottom end of the driving shaft of the crushing roller frame 4, and the incomplete gear 401 is alternately meshed with the two rows of teeth on the rectangular driving frame 103 for transmission; two circular feeding openings are symmetrically opened on the lifting base 5; the circumferential outer ring of the lifting base 5 slides in contact with the circumferential inner wall of the crushing tank 1.

[0042] Preferably, the crushing roller frame 4 is composed of a driving shaft and three circles of crushing teeth welded around the driving shaft.

[0043] Preferably, a motor 3 is fixedly installed at the center of the top of the cover plate 2, and the top part of the driving shaft passes through the cover plate 2 and is connected to the motor 3 for transmission; a feed pipe 201 and a dust suction fan 8 are fixedly installed at the top of the cover plate 2 on both sides of the motor 3, and the feed pipe 201 and the cover plate 2 are both connected to the crushing tank 1.

[0044] Preferably, two L-shaped vertical support plates are symmetrically welded downwardly at the bottom side of the circumferential outer wall of the crushing tank 1, and a base ring 101 is welded at the bottom of the two L-shaped vertical support plates.

[0045] Preferably, two L-shaped limit plates 501 are welded around the bottom position of the outer circle of the lifting base 5, and a rotating circle 7 is installed on the two L-shaped limit plates 501 for common rotation, and two sealing covers 701 are symmetrically welded on the inner side of the rotating circle 7; the two sealing covers 701 are both circular structures, and the rotating circle 7 can rotate to drive the two sealing covers 701 to slide on the bottom of the two circular feeding openings; By rotating the circle 7, the two sealing covers 701 can be rotated forward and backward to control the two sealing covers 701 to be separated from or covered by the two circular material discharge ports, and the two circular material discharge ports can be opened and closed synchronously. Compared with the first embodiment, the cumbersome steps of tightening and loosening the two blocking covers 6 step by step in order to open and close the two circular material discharge ports are omitted, and the opening and closing operations of the two circular material discharge ports are more convenient and efficient.

[0046] Preferably, a support frame 702 is welded at the bottom of the rotating circle 7, the support frame 702 is a U-shaped structure, and the bottom side support rod of the support frame 702 is close to the bottom side of the rectangular driving frame 103; a vertical supporting driving column 703 is welded and hoisted at the middle position of the bottom side support rod of the support frame 702, and a vertically arranged strip slide groove 7031 is opened through the driving column 703; The driving column 703 can be used to implement forward and reverse torsion driving on the rotating circle 7 and the two sealing covers 701, and the bottom section of the driving column 703 extends downward and is inserted and protrudes from the bottom side of the conical polymer cover 105. This allows the driving column 703 to be directly held outside the bottom of the conical polymer cover 105 to implement torsion switching on and off the two sealing covers 701, eliminating the need to insert one's hand into the conical polymer cover 105 or to open and remove the conical polymer cover 105 in order to switch the two sealing covers 701. The operation is simple and efficient.

[0047] Preferably, a driving column 703 is welded downwardly on the middle section of the support rod at the bottom side of the support frame 702; a conical aggregate cover 105 is welded on the bottom opening of the crushing tank 1, a feed pipe 1051 of an annular structure is welded on the bottom opening of the conical aggregate cover 105, a limiting ring 1052 is welded on the bottom end of the feed pipe 1051, and two positioning holes 1053 are provided on the outer circle of the circumference of the limiting ring 1052 at intervals of 60 degrees; The conical collecting cover 105 and the discharge pipe 1051 can collect and discharge the ore fragments discharged from the two circular discharge ports in a centralized manner. Compared with the first embodiment, this avoids the ore fragments from being directly discharged through the two circular discharge ports by vibration, causing the ore fragments to fly around and cannot be discharged in a centralized manner, requiring the trouble of subsequent additional cleaning and collection.

[0048] Preferably, a swivel ring 108 is rotatably mounted on the discharge tube 1051, and the rotation limit of the swivel ring 108 is between the limit ring 1052 and the conical aggregate cover 105; an F-shaped mounting piece 1081 which is horizontally supported as a whole is welded on the circumferential outer ring of the swivel ring 108, and a driving plug plate 107 is slidably mounted on the two vertical parts of the F-shaped mounting piece 1081 through spring pushing, and the head end part of the driving plug plate 107 is slidably fitted with the strip slide groove 7031; a force plate 1071 is welded and mounted on the middle part of the driving plug plate 107, and an L-shaped plug rod 1072 is welded on the top of the force plate 1071, and the horizontal rod section of the L-shaped plug rod 1072 is slidably fitted with the vertical part of the F-shaped mounting piece 1081 close to the limit ring 1052, and the head end of the horizontal rod section of the L-shaped plug rod 1072 is plug-fitted with the two positioning holes 1053 in an optional form; Through the four L-shaped limit plates 501, the driving column 703 can be driven by the lifting base 5 to slide up and down. When the driving column 703 is driven to slide up and down, it can slide through and dredge the discharge pipe 1051, thereby reducing the probability of the discharge pipe 1051 being blocked. In addition to being used as a component for the two covers 701 of the torsion switch, the driving column 703 can also be used as a discharge dredging component, which has a dual-purpose use effect. This can save the need to configure an additional discharge dredging component for the conical discharge pipe 1051, which helps to simplify the structure and reduce the weight of the device as a whole. By slidingly cooperating with the strip slide groove 7031, the driving plug plate 107 can be connected to the driving column 703, and the driving column 703, the rotating circle 7 and the two covers 701 are driven to control the opening and closing of the two circular discharge ports. When the two circular discharge ports are opened and closed by the torsion drive of the driving plug plate 107, the hand grasps the tail end of the driving plug plate 107; the driving plug plate 107 is horizontally supported and the tail end is away from the discharge port at the bottom of the discharge pipe 1051, which makes the driving plug plate 107 driven by the torsion operation 7 When opening and discharging the two circular discharge ports, the hand can be kept away from the discharge port at the bottom of the discharge pipe 1051. Compared with the prior art which lacks the auxiliary opening and closing structure such as the driving plug plate 107 for assisting the opening and closing of the circular discharge port, it can avoid the need for the hand to directly twist the driving column 703 directly below the discharge port at the bottom of the discharge pipe 1051 to open and discharge the circular discharge port, and prevent the ore fragments discharged from the discharge port at the bottom of the discharge pipe 1051 from directly colliding with the hand and injuring the hand, which is conducive to improving the safety of the device unloading operation; The head end of the horizontal rod section of the L-shaped plug rod 1072 is plugged into the two positioning holes 1053 to plug and fix the swivel 108, the driving plug plate 107 and the driving column 703, so that the two covers 701 are kept in a state of being opened or covered to separate the two circular feeding openings; The head end of the spring on the driving plug plate 107 is in contact with the force plate 1071, which is used to push the driving plug plate 107 to maintain the driving plug plate 107 in a state of use for plugging and transmission with the driving column 703, and the L-shaped plug rod 1072 is welded and fixedly connected to the force plate 1071, which can use the spring on the driving plug plate 107 to implement pushing and positioning, so that the L-shaped plug rod 1072 and the driving plug plate 107 can share a spring to implement pushing and positioning, which can save the need to configure an additional positioning spring for the L-shaped plug rod 1072, which helps to simplify the structure of the device to a certain extent; the L-shaped plug rod 1072 is tightened and pulled out by the driving plug plate 107, and the head end of the driving plug plate 107 protrudes from the driving column 703 and protrudes to a certain length. The protruding length can ensure that the driving plug plate 107 will not be pulled out of the driving column 703 to disconnect the power connection when the L-shaped plug rod 1072 is pulled out; The strip slide groove 7031 has a certain length, and is arranged to slide through the head end part of the driving plug plate 107, so that the driving plug plate 107 can be used for the lifting, sliding and dredging movement implemented by the driving column 703 following the lifting base 5, avoiding the driving plug plate 107 from blocking and interfering with the up and down sliding of the driving column 703, which helps to ensure the normal and effective implementation of the dredging function of the driving column 703.

[0049] Working principle: First, the arsenic-containing ore is crushed by the ore crushing module, and then the small pieces of ore formed after crushing are ground into fine ore powder by the ore grinding module. Then the ore powder is transferred to the leaching module, and the ore is leached by acidic solutions such as sulfuric acid and hydrochloric acid to dissolve arsenic into the solution. The equation of the above acid leaching reaction is: As2S3+6H2SO4→2H3AsO4+3H2S+3SO2. Then, the solution containing the ore powder is transferred to the solution purification module, and the solid impurities in the solution are removed by filtering and precipitation purification to ensure the purity of the solution. When performing precipitation purification, the impurities in the solution are precipitated by adding precipitants (such as lime, iron salt, etc.), and the precipitation purification reaction The corresponding equation is: FeCl3+3Na3AsO3→Fe(AsO3)3+3NaCl. After completing the above operations, the purified solution is transferred to the arsenic extraction module. Arsenic is precipitated from the solution by adding chemical reagents (such as sodium sulfide, hydrogen sulfide, etc.) to the solution, and crude arsenic is extracted. The reaction equation of the above chemical precipitation is: H3AsO4+3Na2S+6H2O→As2S3+6NaOH. Finally, the extracted crude arsenic is transferred to the arsenic refining module. The crude arsenic is heated to the sublimation temperature, vaporized and then condensed, and pure arsenic is collected. The equation of the above sublimation reaction is: As(s)→As(g)→As(s). At this point, a complete set of arsenic extraction process has been implemented.

Claims

1. A clean production device for extracting arsenic, comprising: Ore crushing module, ore grinding module, leaching module, solution purification module, arsenic extraction module and arsenic refining module, the above modules are connected in series in the production process of arsenic extraction; The invention is characterized in that: the ore crushing module comprises: a crushing pot (1), the top opening of the crushing pot (1) is tightly covered with a cover plate (2), and a crushing roller frame (4) is rotatably installed at the center of the crushing pot (1); a lifting base (5) is slidably installed on the bottom section of the driving shaft of the crushing roller frame (4), and the top section of the shaft of the crushing roller frame (4) is rotatably connected with the center part of the cover plate (2); two hexagonal positioning shafts (102) are welded to the bottom section of the inner wall of the crushing pot (1) in a bilaterally symmetrical manner, and a rectangular driving frame (103) is slidably installed on the two hexagonal positioning shafts (102). ), the rectangular driving frame (103) is of rectangular structure, and two rows of teeth are symmetrically arranged on the front and rear side support plates of the rectangular driving frame (103); two connecting rods (104) are symmetrically rotatably connected to the middle parts of the front and rear side support plates of the rectangular driving frame (103), and the top ends of the two connecting rods (104) are rotatably connected to the bottom of the lifting base (5); an incomplete gear (401) is mounted on the bottom end of the driving shaft of the crushing roller frame (4), and the incomplete gear (401) is alternately meshed with the two rows of teeth on the rectangular driving frame (103) for transmission; and two circular feeding openings are symmetrically opened on the lifting base (5).

2. The clean production device for extracting arsenic according to claim 1, characterized in that: The crushing roller frame (4) is composed of a driving shaft and three circles of crushing teeth welded around the driving shaft.

3. The clean production device for extracting arsenic according to claim 1, characterized in that: A motor (3) is fixedly mounted at the center of the top end of the cover plate (2), and the top end portion of the driving shaft passes through the cover plate (2) and is connected to the motor (3) for transmission; A feed pipe (201) and a dust suction fan (8) are fixedly mounted on the top of the cover plate (2) at positions on both sides of the motor (3), and the feed pipe (201) and the cover plate (2) are both connected to the crushing tank (1).

4. The clean production device for extracting arsenic according to claim 1, characterized in that: Two plugging covers (6) are screwed and sealed in the two circular feed openings. The plugging covers (6) are of circular structure, and a protruding disc (601) of circular structure is arranged at the top of the plugging covers (6). An external thread is arranged on the outer circumference of the protruding disc (601); A plum blossom knob is welded at the center of the bottom of the plug cover (6).

5. The clean production device for extracting arsenic according to claim 1, characterized in that: Two L-shaped limit plates (501) are welded around the bottom of the outer circumference of the lifting base (5), a rotating circle (7) is rotatably mounted on the two L-shaped limit plates (501), and two sealing covers (701) are symmetrically welded on the inner side of the rotating circle (7).

6. The clean production device for extracting arsenic according to claim 5, characterized in that: The two sealing covers (701) are both circular in structure, and the rotating circle (7) can rotate to drive the two sealing covers (701) to slide onto the bottom of the two circular discharge openings.

7. The clean production device for extracting arsenic according to claim 5, characterized in that: A support frame (702) is welded to the bottom of the rotating circle (7), the support frame (702) is in a U-shaped structure, and the bottom support rod of the support frame (702) is located close to the bottom side of the rectangular driving frame (103); A vertically supported driving column (703) is welded and hoisted at the middle position of the support rod at the bottom side of the support frame (702), and a vertically arranged strip-shaped sliding groove (7031) is penetrated through the driving column (703).

8. The clean production device for extracting arsenic according to claim 7, characterized in that: A driving column (703) is welded downwardly on the middle section of the support rod at the bottom side of the support frame (702); A conical aggregate cover (105) is welded to the bottom opening of the crushing tank (1), a discharge pipe (1051) of an annular structure is welded to the bottom opening of the conical aggregate cover (105), a limiting ring (1052) is welded to the bottom end of the discharge pipe (1051), and two positioning holes (1053) are provided on the outer circumference of the limiting ring (1052) at intervals of 60 degrees.

9. The clean production device for extracting arsenic according to claim 8, characterized in that: A rotating ring (108) is rotatably mounted on the discharge pipe (1051), and the rotating ring (108) is limited in rotation between the limiting ring (1052) and the conical material collecting cover (105); An F-shaped mounting member (1081) is welded on the outer circumference of the rotating ring (108) and is supported horizontally as a whole. A driving plug plate (107) is slidably mounted on two vertical parts of the F-shaped mounting member (1081) through spring pushing, and the head end of the driving plug plate (107) is slidably fitted through the strip-shaped slide groove (7031). A force-bearing plate (1071) is welded and sleeved on the middle part of the driving plug plate (107), and an L-shaped plug rod (1072) is welded on the top of the force-bearing plate (1071). The horizontal rod section of the L-shaped plug rod (1072) is slidably fitted through the vertical section of the F-shaped mounting member (1081) near the limit ring (1052), and the head end of the horizontal rod section of the L-shaped plug rod (1072) is plug-fitted with the two positioning holes (1053) in an optional manner.

10. A process for extracting arsenic using the device according to any one of claims 1 to 9, characterized in that: The steps include: ① First, the arsenic-containing ore is crushed by the ore crushing module, and then the small pieces of ore formed after crushing are ground into fine ore powder by the ore grinding module; ② Then transfer the ore powder to the leaching module, and leach the ore through acidic solutions such as sulfuric acid and hydrochloric acid to dissolve arsenic into the solution. The equation of the acid leaching reaction is: As2S3+6H2SO4→2H3AsO4+3H2S+3SO2; ③. The solution containing the dissolved mineral powder is transferred to the solution purification module, and the solid impurities in the solution are removed by filtering and precipitation to ensure the purity of the solution. When performing precipitation purification, the impurities in the solution are precipitated by adding a precipitant (such as lime, iron salt, etc.), and the equation of the precipitation purification reaction is: FeCl3+3Na3AsO3→Fe(AsO3)3+3NaCl; ④. The purified solution is transferred to the arsenic extraction module. Arsenic is precipitated from the solution by adding chemical reagents (such as sodium sulfide, hydrogen sulfide, etc.) to the solution to extract crude arsenic. The reaction equation of the above chemical precipitation is: H3AsO4+3Na2S+6H2O→As2S3+6NaOH; ⑤. Finally, the extracted crude arsenic is transferred to the arsenic refining module. The crude arsenic is heated to the sublimation temperature, vaporized and then condensed, and pure arsenic is collected. The above sublimation reaction equation is: As(s)→As(g)→As(s). At this point, a complete set of arsenic extraction process has been implemented.

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