Spodumene concentrate suspension roasting processing method

Abstract

The invention relates to the technical field of spodumene processing, in particular to a spodumene concentrate suspension roasting processing method. The spodumene concentrate suspension roasting processing method needs to be completed through cooperation of the cylinder, the feeding mechanism and the roasting mechanism. The invention solves the problems that the utilization rate of heat generated by an electric heating element is low and resources are wasted due to the fact that waste gas is directly discharged after being purified during spodumene roasting in the existing spodumene roasting process, and the problem that part of spodumene is excessively roasted to be converted into gamma-type spodumene which can cake and fall off, so that the production cost is high. The falling gamma-type spodumene can cause damage to a heating element and a fan, and the service life of the heating element and the fan is influenced; the heat utilization rate of the heating element is improved, and the service life of the heating element and the service life of the fan are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of spodumene processing, and in particular to a suspension roasting processing method for spodumene concentrate. Background Art

[0002] Spodumene is a pegmatite mineral, often associated with crystal, tourmaline, beryl, etc. By roasting in a rotary kiln, the spodumene crystal form can be transformed, its chemical activity can be increased, and it can undergo various reactions with acids and alkalis to facilitate the extraction of lithium.

[0003] However, the current spodumene roasting process mainly has the following problems: 1. A large amount of waste gas with residual heat will be generated during the roasting process of spodumene, and during the existing spodumene roasting, the waste gas is directly discharged after purification, and the heat generated by the electric heating element is low in utilization rate, resulting in waste of resources.

[0004] 2. Spodumene roasting is the process of converting itself into β-spodumene that easily reacts with acids and alkalis through high temperature. However, over-roasting may occur during the spodumene roasting process, causing part of the spodumene to be converted into γ-spodumene, which will clump and fall off. The fallen γ-spodumene will cause damage to the heating elements and fans, affecting their service life.

[0005] Therefore, in order to improve the heat utilization rate of the heating element and ensure the service life of the heating element and the fan, the present invention provides a suspension roasting processing method for spodumene concentrate. Summary of the invention

[0006] In order to achieve the above object, the present invention adopts the following technical scheme: a spodumene concentrate suspension roasting processing method, the spodumene concentrate suspension roasting processing method is as follows: S1: The feeding mechanism quantitatively delivers spodumene to the roasting mechanism; S2: The roasting mechanism performs suspension roasting on the spodumene during the falling process; S3: The waste heat of the exhaust gas during the roasting process preheats the spodumene in the feeding mechanism; S4: The spodumene that has been roasted and converted is discharged for subsequent processing.

[0007] The method in steps S1-S4 is completed by using a spodumene concentrate suspension roasting processing device, which includes a column, a feeding mechanism and a roasting mechanism; The upper end surface of the cylinder is provided with a feeding mechanism, and the interior of the cylinder is provided with a roasting mechanism; The roasting mechanism includes a support plate, a support plate is arranged at the bottom of the inner cavity of the cylinder, a blower is arranged between the support plate and the bottom wall of the cylinder, a discharge port is arranged on the left side of the circumferential outer wall of the cylinder, a guide for discharge is arranged above the support plate, a silicon carbon rod for heating is arranged between the guide and the support plate, and the silicon carbon rod is installed on the cylinder, an air guide cylinder is arranged on the inner wall of the cylinder above the guide, and the air guide cylinder is a cylindrical structure that is wide at the top and bottom and narrow in the middle, a discharge pipe is arranged on the right side of the circumferential outer wall of the cylinder, and the discharge pipe passes through the cylinder and is connected with the air guide cylinder, a material guide port connected to the discharge pipe is opened on the air guide cylinder, and an opening and closing member for opening and closing the material guide port is arranged in the discharge pipe.

[0008] Preferably, the feeding mechanism includes a silo, the silo is installed on the upper end surface of the column, a cylindrical groove is opened in the middle of the silo, a funnel connected to the cylindrical groove is arranged on the upper end surface of the silo, a discharge port connected to the column is arranged on the left side of the lower end surface of the silo, an auger rod is arranged inside the cylindrical groove, and the auger rod is rotatably matched with the silo, a preheating part is arranged between the cylindrical groove and the auger rod, the right end of the auger rod extends to the outside of the silo, the right end of the auger rod is connected to the motor, and a blocking part for controlling feeding is arranged on the left side of the auger rod.

[0009] Preferably, the feeding mechanism includes a silo, the silo is installed on the upper end surface of the column, a cylindrical groove is opened in the middle of the silo, a funnel connected to the cylindrical groove is arranged on the upper end surface of the silo, a discharge port connected to the column is arranged on the left side of the lower end surface of the silo, an auger rod is arranged inside the cylindrical groove, and the auger rod is rotatably matched with the silo, a preheating part is arranged between the cylindrical groove and the auger rod, the right end of the auger rod extends to the outside of the silo, the right end of the auger rod is connected to the motor, and a blocking part for controlling feeding is arranged on the left side of the auger rod.

[0010] Preferably, the opening and closing part includes a sealing block, the discharge pipe is a rectangular structure, a sealing block is slidably installed in the guide port, a cylinder is hinged on the upper surface of the discharge pipe, a sliding rod is provided on the side of the sealing block close to the cylinder, an end away from the sealing block extends to the outside of the discharge pipe, and the sliding rod is slidably matched with the discharge pipe, an end of the sliding rod away from the sealing block is hinged to the telescopic end of the cylinder, and a spring column is provided between the end surface of the sealing block close to the sliding rod and the inner wall of the discharge pipe.

[0011] Preferably, the preheating element includes a spiral groove, a spiral groove is provided on the circumferential inner wall of the columnar groove, one end of the spiral groove is connected to the outside of the silo, a through hole is provided on the lower end surface of the silo and is connected to the other end of the spiral groove, and the through hole is connected to the column, a high-temperature film is arranged inside the through hole, a heat-conducting drum is arranged on the circumferential inner wall of the columnar groove, and the discharge port is connected to the heat-conducting drum.

[0012] Preferably, the guide member includes a mesh plate, which is arranged above the silicon carbon rod and is installed on the column in an inclined shape with the left side lower and the right side higher. A square hole is opened on the left side of the mesh plate, and a windshield plate with the left side lower and the right side higher is arranged between the discharge port and the side wall of the square hole, and the upper end surface of the windshield plate and the upper end surface of the mesh plate are located on the same plane.

[0013] Preferably, the blocking member includes a threaded tooth, the circumferential outer wall on the left side of the auger rod is provided with a threaded tooth, a blocking plate cooperating with the threaded tooth is provided on the left side of the auger, and the blocking plate is slidably matched with the heat-conducting reel, a compression spring is provided between the left side of the blocking plate and the inner wall of the columnar groove, and the compression spring is sleeved on the auger rod.

[0014] Preferably, the material guide port is arranged at a lower middle position of the air guide cylinder.

[0015] Preferably, a heat insulation layer is provided on an end surface of the sealing block away from the spring column.

[0016] The beneficial effects of the present invention are: 1. The feeding mechanism provided in the present invention utilizes the waste heat of the exhaust gas through the spiral groove to preheat the spodumene in the columnar groove, fully utilizes the heat generated by the silicon carbon rod, saves resources, and makes the spodumene heated evenly during roasting, so as to improve the efficiency and conversion quality of the spodumene crystal transformation.

[0017] Second, the roasting mechanism provided in the present invention gathers and blows out the hot air blown by the blower through the air guide tube to increase the wind force to ensure the suspension of spodumene, and controls the opening and closing of the material guide port through the opening and closing parts to ensure the smooth discharge of the processed spodumene.

[0018] 3. The guide member provided in the present invention ensures the normal blowing out of artificial air through the mesh plate, and prevents the agglomerated γ-type spodumene from falling directly onto the silicon carbon rod and the blower, causing damage to them and affecting their service life. The inclination of the mesh plate enables the agglomerated γ-type spodumene to be discharged from the column, avoiding clogging of the mesh plate and affecting the wind force in the air guide tube. The inclined installation of the wind shield plate prevents the direct loss of hot air, thereby ensuring the internal heat pressure while realizing the exchange of air inside and outside the column. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0021] Figure 2 It is a cross-sectional view of the present invention.

[0022] Figure 3 The present invention Figure 2 A partial enlarged view of point A in the figure.

[0023] Figure 4 The present invention Figure 3 A partial enlarged view of point B in FIG.

[0024] Figure 5 The present invention Figure 2 A partial enlarged view of point C in the figure.

[0025] Figure 6 The present invention Figure 2 A partial enlarged view of point D in the figure.

[0026] In the figure: 1. cylinder; 2. feeding mechanism; 3. roasting mechanism; 30. support plate; 31. blower; 32. discharge port; 33. silicon carbon rod; 34. air guide tube; 35. discharge pipe; 36. guide port; 4. guide member; 5. opening and closing member; 20. silo; 21. columnar groove; 22. funnel; 23. discharge port; 24. auger rod; 25. motor; 6. preheating member; 7. blocking member; 50. sealing block; 51. cylinder; 52. slide rod; 53. spring column; 60. spiral groove; 61. high temperature film; 62. heat conducting reel; 40. mesh plate; 41. square hole; 42. wind shield; 70. threaded teeth; 71. blocking plate; 72. compression spring. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described below with reference to the accompanying drawings. In the process, in order to ensure the clarity and convenience of the description, we may exaggerate the width of the lines or the size of the components in the drawings.

[0028] In addition, the terms used below are defined based on the functions of the present invention and may differ depending on the intention or custom of the user or operator. Therefore, these terms are defined based on the entire contents of this specification.

[0029] See also Figure 1 and Figure 2 A method for suspended roasting of spodumene concentrate, characterized in that: the method for suspended roasting of spodumene concentrate is as follows: S1: The motor 25 rotates to drive the auger rod 24 to rotate, and the auger rod 24 delivers the spodumene to the discharge port 23 in a quantitative manner, and the spodumene at the discharge port 23 falls to the roasting mechanism 3; S2: The blower 31 blows the heat generated by the silicon carbon rod 33 when it is powered on upward, so that the spodumene falling from the discharge port 23 is subjected to suspended roasting processing; S3: The waste heat of the exhaust gas during the roasting process is discharged slowly through the spiral groove 60 and transferred to the spodumene inside the silo 20 through the heat-conducting reel 62 to preheat it to improve the efficiency of the later roasting conversion; S4: After the calcination and conversion of spodumene is completed, the opening and closing member 5 opens the material guide port 36, and the wind blown by the blower 31 is blown out from the material guide port 36, and the spodumene is discharged with the wind for subsequent processing.

[0030] The method in the above steps S1-S4 is completed by using a spodumene concentrate suspension roasting processing device, which includes a column 1, a feeding mechanism 2 and a roasting mechanism 3.

[0031] The upper end surface of the column 1 is provided with a feeding mechanism 2, and the interior of the column 1 is provided with a roasting mechanism 3.

[0032] See also Figure 1 , Figure 2 and Figure 3 The feeding mechanism 2 includes a silo 20, the silo 20 is installed on the upper end surface of the cylinder 1, a columnar groove 21 is opened in the middle of the silo 20, the upper end surface of the silo 20 is provided with a funnel 22 connected with the columnar groove 21, and a discharge port 23 connected with the cylinder 1 is provided on the left side of the lower end surface of the silo 20, an auger rod 24 is provided inside the columnar groove 21, and the auger rod 24 rotates with the silo 20, a preheating part 6 is provided between the columnar groove 21 and the auger rod 24, the right end of the auger rod 24 extends to the outside of the silo 20, the right end of the auger rod 24 is connected to the motor 25, and a blocking part 7 for controlling feeding is provided on the left side of the auger rod 24.

[0033] During specific operation, the existing conveyor delivers the crushed spodumene concentrate to the funnel 22, and then the motor 25 runs to deliver the spodumene in the funnel 22 to the discharge port 23 in a quantitative manner. The spodumene will fall from the discharge port 23 into the roasting mechanism 3 for suspended roasting processing. After the required spodumene is transported, the motor 25 reverses to make the blocking member 7 close the position of the discharge port 23, and then the motor 25 rotates forward, and the spodumene that needs to be processed next time is transported to the columnar trough 21 through the rotation of the auger. When the spodumene in the column 1 falls from the discharge port 23, it will be processed by the roasting mechanism 3, so that the spodumene crystal form is transformed into β-type spodumene that is easy to extract lithium, and the hot air during the roasting process will preheat the spodumene inside the columnar trough 21 through the preheating member 6. At the same time, the motor 25 rotates forward and reversely to make the spodumene in the columnar trough 21 heated evenly.

[0034] See also Figure 2 , Figure 3 and Figure 4 The blocking member 7 includes a threaded tooth 70, and the circumferential outer wall on the left side of the auger rod 24 is provided with a threaded tooth 70. The left side of the auger is provided with a blocking plate 71 that cooperates with the threaded tooth 70, and the blocking plate 71 is slidably matched with the heat-conducting reel 62. A compression spring 72 is provided between the left side of the blocking plate 71 and the inner wall of the columnar groove 21, and the compression spring 72 is sleeved on the auger rod 24.

[0035] After the auger 24 has been swung to the left by the action of the spring 72, the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger 24 will be in the open position, and the auger When it is necessary to feed the material to the column 1 again, the motor 25 rotates forward through the auger rod 24 to drive the spodumene to move to the left. The amount of spodumene on the left side of the auger rod 24 increases, which will push the blocking plate 71 to move to the left, so that the blocking plate 71 cooperates with the thread teeth 70, and continues to move to the left with the rotation of the auger rod 24 and opens the discharge port 23 for feeding.

[0036] See also Figure 2 and Figure 3 The preheating element 6 includes a spiral groove 60, and the spiral groove 60 is provided on the circumferential inner wall of the columnar groove 21. One end of the spiral groove is connected to the outside of the silo 20. A through hole connected to the other end of the spiral groove 60 is provided on the lower end surface of the silo 20, and the through hole is connected to the column 1. A high-temperature film 61 is arranged inside the through hole. A heat-conducting reel 62 is arranged on the circumferential inner wall of the columnar groove 21, and the discharge port 23 is connected to the heat-conducting reel 62.

[0037] During specific operation, waste gas is generated during the roasting process of spodumene by the roasting mechanism 3. The waste gas will first be filtered through the high-temperature membrane 61 and then enter the spiral groove 60 to prevent impurities in the waste gas from clogging the spiral groove 60. The waste gas moves from one end of the spiral groove 60 to the other end and is discharged. After being desulfurized by the existing desulfurization system, it is discharged again. In the process of the waste gas moving in the spiral groove 60, its own waste heat will be transferred to the spodumene inside the columnar groove 21 through the heat-conducting reel 62, and the auger 24 is driven by the motor 25 to stir the spodumene so that it is heated evenly, thereby preheating the spodumene, so that the spodumene can be heated evenly inside and outside first, avoiding uneven roasting inside and outside when the spodumene enters the column 1 for roasting, affecting the conversion quality, and preheating in advance can reduce the roasting time and improve the processing efficiency. In addition, the use of waste gas preheating improves the heat utilization rate and saves resources.

[0038] See also Figure 2 and Figure 5The roasting mechanism 3 includes a support plate 30, a support plate 30 is arranged at the bottom of the inner cavity of the cylinder 1, a blower 31 is arranged between the support plate 30 and the bottom wall of the cylinder 1, a discharge port 32 is arranged on the left side of the circumferential outer wall of the cylinder 1, a guide member 4 for discharging is arranged above the support plate 30, a silicon carbon rod 33 for heating is arranged between the guide member 4 and the support plate 30, and the silicon carbon rod 33 is installed on the cylinder 1, an air guide cylinder 34 is arranged on the inner wall of the cylinder 1 above the guide member 4, and the air guide cylinder 34 is a cylindrical structure that is wide at the top and bottom and narrow in the middle, a discharge pipe 35 is arranged on the right side of the circumferential outer wall of the cylinder 1, and the discharge pipe 35 passes through the cylinder 1 and is connected with the air guide cylinder 34, a guide port 36 connected with the discharge pipe 35 is opened on the air guide cylinder 34, and an opening and closing member 5 for opening and closing the guide port 36 is arranged in the discharge pipe 35.

[0039] During specific operation, the spodumene is quantitatively delivered to the discharge port 23 through the auger rod 24. When the spodumene falls from the discharge port 23, the blower 31 will blow the heat of the silicon carbon rod 33 which is powered and heated upward, and the hot air is blown upward through the air guide tube 34, so that the fallen spodumene powder is in a suspended state under the action of the hot air. At this time, the spodumene is in a better dispersed state, which can make the gas and solid fully contact, so that the reaction speed of the spodumene is accelerated, and the crystal conversion efficiency is improved. In the roasting and conversion process, excessive roasting will occur, which will cause the spodumene conversion The γ-type spodumene has a glassy structure with a large mass and will fall off. The fallen γ-type spodumene is discharged from the discharge port 32 through the guide member 4 to avoid affecting the suspended roasting of the remaining spodumene. After the roasting conversion is completed, the opening and closing member 5 opens the guide port 36, and the wind blown by the blower 31 is blown into the discharge pipe 35 from the guide port 36. The air pressure in the air guide tube 34 becomes weak, and the β-type spodumene falls and passes through the guide port 36 into the discharge pipe 35 with the wind, and is discharged along the discharge pipe 35 for the next process operation.

[0040] See also Figure 2 and Figure 5 The guide member 4 includes a mesh plate 40, which is arranged above the silicon carbon rod 33, and is installed on the column 1 in an inclined shape with the left side lower and the right side higher. A square hole 41 is opened on the left side of the mesh plate 40, and a windshield plate 42 with the left side lower and the right side higher is arranged between the discharge port 32 and the side wall of the square hole 41, and the upper end surface of the windshield plate 42 and the upper end surface of the mesh plate 40 are located in the same plane.

[0041] During specific operation, the wind shield plate 42 which is lower on the left and higher on the right prevents the wind blown by the blower 31 from being blown out directly from the discharge port 32, affecting the air pressure in the air guide tube 34, thereby affecting the suspension roasting operation, and the mesh plate 40 which is lower on the left and higher on the right causes the agglomerated γ-type spodumene to fall onto the mesh plate 40, roll to the left along the mesh plate 40, fall onto the wind shield plate 42 through the square hole 41, and roll out from the discharge port 32 along the wind shield plate 42, thereby preventing the γ-type spodumene from falling and damaging the blower 31 or clogging the mesh plate 40 to affect the roasting process of the spodumene.

[0042] See also Figure 1 , Figure 2 and Figure 6 The opening and closing member 5 includes a sealing block 50. The discharge pipe 35 is a rectangular structure. The sealing block 50 is slidably installed in the guide port 36. A cylinder 51 is hinged on the upper surface of the discharge pipe 35. A sliding rod 52 is provided on the side of the sealing block 50 close to the cylinder 51. The end away from the sealing block 50 extends to the outside of the discharge pipe 35, and the sliding rod 52 is slidably matched with the discharge pipe 35. The end of the sliding rod 52 away from the sealing block 50 is hinged to the telescopic end of the cylinder 51. A spring column 53 is provided between the end surface of the sealing block 50 close to the sliding rod 52 and the inner wall of the discharge pipe 35.

[0043] During specific operation, the telescopic end of the cylinder 51 extends out to push the slide rod 52, and at the same time, the cylinder 51 rotates under the action of the thrust to ensure that the slide rod 52 will be pushed by the cylinder 51 to slide outside the discharge pipe 35, and the slide rod 52 pulls the sealing block 50 away from the material guide port 36. At the same time, the spring column 53 limits and contracts the sealing block 50 to ensure the opening and closing of the sealing block 50 to the material guide port 36. After the sealing block 50 is away from the material guide port 36, the wind from the blower 31 will drive the β-type spodumene to be discharged from the material guide port 36 through the discharge pipe 35 for subsequent processing.

[0044] See also Figure 2 The material guide port 36 is arranged at the lower middle part of the air guide tube 34; during specific operation, the wind force is relatively strong at the lower middle part of the air guide tube 34, and the wind blown out by the lower blower 31 will be gathered and blown out through this place, so that when the material guide port 36 is opened, the wind blown out by the blower 31 can pass through the material guide port 36 smoothly in large quantities and blow out of the material pipe 35, thereby improving the smoothness of the spodumene discharge after the processing is completed.

[0045] See also Figure 2 and Figure 6 The end face of the sealing block 50 away from the spring column 53 is provided with a heat insulation layer; during specific operation, the heat insulation layer can prevent the heat generated during the spodumene roasting process from being transferred to the slide rod 52 through the sealing block 50, and the slide rod 52 then conducts heat to the cylinder 51, thereby causing damage to the internal parts of the cylinder 51, affecting its airtightness, and causing it to fail to work normally.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spodumene concentrate suspension roasting processing method, characterized in that: The suspended roasting processing method of spodumene concentrate is as follows: S1: The feeding mechanism (2) quantitatively delivers spodumene to the position of the roasting mechanism (3); S2: the roasting mechanism (3) performs suspension roasting on the spodumene during the falling process; S3: the waste heat of the exhaust gas during the roasting process is used to preheat the spodumene in the feeding mechanism (2); S4: The calcined and converted spodumene is discharged for subsequent processing; The method in steps S1 to S4 is completed by using a spodumene concentrate suspension roasting processing device, which includes a column (1), a feeding mechanism (2) and a roasting mechanism (3); wherein: The upper end surface of the cylinder (1) is provided with a feeding mechanism (2), and the interior of the cylinder (1) is provided with a roasting mechanism (3); The roasting mechanism (3) comprises a support plate (30), the support plate (30) is arranged at the bottom of the inner cavity of the cylinder (1), a blower (31) is arranged between the support plate (30) and the bottom wall of the cylinder (1), a discharge port (32) is arranged on the left side of the circumferential outer wall of the cylinder (1), a guide (4) for discharge is arranged above the support plate (30), a silicon carbon rod (33) for heating is arranged between the guide (4) and the support plate (30), and the silicon carbon rod (33) is installed on the cylinder ( 1), an air guide tube (34) is arranged on the inner wall of the cylinder (1) above the guide member (4), and the air guide tube (34) is a cylindrical structure that is wide at the top and bottom and narrow in the middle, a discharge pipe (35) is arranged on the right side of the circumferential outer wall of the cylinder (1), and the discharge pipe (35) passes through the cylinder (1) and is connected to the air guide tube (34), a material guide port (36) connected to the discharge pipe (35) is arranged on the air guide tube (34), and an opening and closing member (5) for opening and closing the material guide port (36) is arranged in the discharge pipe (35).

2. A method for suspended roasting of spodumene concentrate according to claim 1, characterized in that: The feeding mechanism (2) comprises a silo (20), the silo (20) is installed on the upper end surface of the cylinder (1), a columnar groove (21) is opened in the middle of the silo (20), the upper end surface of the silo (20) is provided with a funnel (22) connected to the columnar groove (21), the lower end surface of the silo (20) is provided with a discharge port (23) connected to the cylinder (1) at the left position, the columnar groove (21) is provided with an auger rod (24) inside, and the auger rod (24) and the silo (20) are rotatably matched, a preheating part (6) is provided between the columnar groove (21) and the auger rod (24), the right end of the auger rod (24) extends to the outside of the silo (20), the right end of the auger rod (24) is connected to the motor (25), and the left side of the auger rod (24) is provided with a blocking part (7) for controlling feeding.

3. A method for suspended roasting of spodumene concentrate according to claim 1, characterized in that: The opening and closing member (5) comprises a sealing block (50), the discharge pipe (35) is a rectangular structure, a sealing block (50) is slidably installed in the guide port (36), a cylinder (51) is hinged on the upper surface of the discharge pipe (35), a sliding rod (52) is arranged on the side of the sealing block (50) close to the cylinder (51), an end away from the sealing block (50) extends to the outside of the discharge pipe (35), and the sliding rod (52) and the discharge pipe (35) are slidably matched, an end of the sliding rod (52) away from the sealing block (50) is hinged to the telescopic end of the cylinder (51), and a spring column (53) is arranged between the end surface of the side of the sealing block (50) close to the sliding rod (52) and the inner wall of the discharge pipe (35).

4. A method for suspended roasting of spodumene concentrate according to claim 2, characterized in that: The preheating element (6) includes a spiral groove (60), the circumferential inner wall of the columnar groove (21) is provided with a spiral groove (60), one end of the spiral groove is connected to the outside of the silo (20), the lower end surface of the silo (20) is provided with a through hole connected to the other end of the spiral groove (60), and the through hole is connected to the column (1), a high-temperature film (61) is arranged inside the through hole, a heat-conducting drum (62) is arranged on the circumferential inner wall of the columnar groove (21), and the discharge port (23) is connected to the heat-conducting drum (62).

5. A spodumene concentrate suspension roasting processing method according to claim 1, characterized in that: The guide member (4) comprises a mesh plate (40), the mesh plate (40) is arranged above the silicon carbon rod (33), and the mesh plate (40) is installed on the column (1) in an inclined shape with the left side lower and the right side higher, a square hole (41) is opened on the left side of the mesh plate (40), and a windshield plate (42) with the left side lower and the right side higher is arranged between the discharge port (32) and the side wall of the square hole (41), and the upper end surface of the windshield plate (42) and the upper end surface of the mesh plate (40) are located on the same plane.

6. A spodumene concentrate suspension roasting processing method according to claim 4, characterized in that: The blocking member (7) includes a threaded tooth (70), and the circumferential outer wall on the left side of the auger rod (24) is provided with a threaded tooth (70). The left side of the auger is provided with a blocking plate (71) that cooperates with the threaded tooth (70), and the blocking plate (71) is slidably matched with the heat-conducting reel (62). A compression spring (72) is provided between the left side of the blocking plate (71) and the inner wall of the columnar groove (21), and the compression spring (72) is sleeved on the auger rod (24).

7. A spodumene concentrate suspension roasting processing method according to claim 1, characterized in that: The material guide port (36) is arranged at a lower middle position of the air guide cylinder (34).

8. A spodumene concentrate suspension roasting processing method according to claim 3, characterized in that: A heat insulation layer is provided on the end surface of one side of the sealing block (50) away from the spring column (53).

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