A method and device for extracting antimony metal

Abstract

The invention belongs to the technical field of antimony metal extraction, and specifically, is an antimony metal extraction method and an extraction device thereof. The extraction device comprises a smelting kettle, a material guide pipe is fixedly installed on the upper end of the smelting kettle, a crushing mechanism for crushing antimony-containing materials is arranged in the material guide pipe, an opening and closing mechanism is arranged directly below the crushing mechanism, a storage box is fixedly connected to the upper end of the material guide pipe, a spiral feed shaft is rotatably installed in the storage box, when the crushing mechanism crushes the antimony-containing materials, the inside of the discharge hole is filled with the spiral feed shaft and the antimony-containing materials, so that the dust generated by the crushing cannot enter the storage box through the discharge hole, thereby preventing the dust from drifting to the outside, and secondly, the length of the sealing plate is much greater than the length of the rectangular chute, when the sealing head releases the sealing of the conical mouth, the rectangular chute is always in a state of being blocked by the sealing plate, thereby preventing dust and heat emitted from the smelting kettle from flowing out of the rectangular chute, and ensuring the internal temperature of the smelting kettle is stable.

Description

Technical Field

[0001] The invention belongs to the technical field of antimony metal extraction, in particular to an antimony metal extraction method and an extraction device thereof. Background Art

[0002] Bismuth is an important impurity element that affects the quality of antimony ingots and antimony oxide. However, antimony and bismuth have similar properties and are difficult to separate by pyrometallurgy. With the complexity of raw materials and the increase of high-bismuth raw materials, it is necessary to study the pyrometallurgical separation of antimony and bismuth. At present, pyrometallurgical technology is the main process in antimony metallurgical production, which can make the antimony metal extraction rate reach more than 90%. The basic process of most antimony smelters is antimony concentrate blast furnace volatilization smelting-crude antimony trioxide reverberatory furnace reduction smelting.

[0003] The patent with publication number CN108456789B discloses a method for extracting antimony metal. The device used in the extraction method includes a drying device, an electrothermal volatilization device, a first dust collecting device and an electrothermal reduction device connected in sequence. The extraction method includes: drying the antimony-containing material in the drying device, and then putting the dried antimony-containing material into the electrothermal volatilization device for volatilization and smelting to obtain antimony-containing flue gas, and collecting the antimony-containing flue gas in the first dust collecting device to obtain antimony oxide dust; using the electrothermal reduction device to reduce and smelt the antimony oxide dust to obtain metallic antimony. The antimony-containing material is volatilized and smelted by electric heating, without the need for blast combustion of fuel, which greatly reduces the amount of flue gas and increases the concentration of sulfur dioxide in the flue gas.

[0004] In the above scheme, the electric thermal volatilization device is mainly composed of a crushing mechanism and a smelting kettle. After the antimony-containing material is crushed by the crushing mechanism, the smelting efficiency of the smelting kettle on the antimony-containing material can be improved. However, the existing crushing mechanism will generate a large amount of material dust during the crushing of the antimony-containing material, causing serious harm to the surrounding environment and the health of the workers. Secondly, after the material is crushed, it is necessary to open the discharge port of the crushing mechanism and the feed port of the smelting kettle. After the feed port of the smelting kettle is opened, the heat inside the smelting kettle is released into the surrounding environment, causing the temperature inside the smelting kettle to be unstable, affecting the smelting effect of the smelting kettle on the antimony-containing material; for this reason, the present invention provides an antimony metal extraction method and an extraction device thereof. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the method for extracting antimony metal described in the present invention comprises the following steps:

[0007] Step 1: Place the antimony-containing material into a drying device for drying and preheating;

[0008] Step 2: putting the dried and preheated antimony-containing material into an electric thermal volatilization device, and performing closed-type crushing on the material by a crushing mechanism in the electric thermal volatilization device, and the crushed material directly falls into a smelting kettle for volatilization and smelting to obtain antimony-containing fume;

[0009] Step 3: passing the antimony-containing flue gas into a first dust collecting device for dust collection to obtain antimony oxide dust;

[0010] Step 4: Mix the antimony oxide dust with a reducing agent, and then place the mixture into an electric thermal reduction device for reduction smelting to obtain metallic antimony and reduced slag.

[0011] Preferably, an antimony metal extraction device, which is suitable for the above-mentioned antimony metal extraction method, comprises a smelting kettle, a material guide pipe is fixedly installed on the upper end of the smelting kettle, a crushing mechanism for crushing antimony-containing materials is arranged in the material guide pipe, an opening and closing mechanism is arranged directly below the crushing mechanism, a material storage box is fixedly connected to the upper end of the material guide pipe, a spiral feed shaft is rotatably installed in the material storage box, the opening and closing mechanism comprises an I-shaped frame, the I-shaped frame is fixedly installed in the material guide pipe, a tapered mouth is arranged in the material guide pipe, a plugging head movably mounted on the I-shaped frame for opening and closing the tapered mouth, a receiving rod fixedly connected to the lower end of the plugging head, an electric push rod for driving the receiving rod, a rectangular slide groove is provided on the material guide pipe, the receiving rod passes through the rectangular slide groove, and a sealing cover plate for blocking the rectangular slide groove is fixedly installed on the receiving rod, and a discharge hole for discharging antimony-containing materials is provided at the bottom of the storage box;

[0012] When the crushing mechanism crushes the antimony-containing material, the inside of the discharge hole is filled with the spiral feed shaft and the antimony-containing material, so that the dust generated by the crushing cannot enter the storage box through the discharge hole, thereby preventing the dust from drifting to the outside. Secondly, the length of the covering plate is much larger than the length of the rectangular chute. When the sealing head releases the sealing of the tapered mouth, the rectangular chute is always in a state of being blocked by the covering plate, thereby preventing dust and heat emitted from the smelting kettle from flowing out of the rectangular chute, ensuring the stability of the temperature inside the smelting kettle.

[0013] Preferably, the plugging head includes a conical head for opening and closing the conical mouth, a rotary sleeve rotatably installed at the upper end of the conical head, a movable tube movably plugged into the conical head, a first spring sleeved on the movable tube, the rotary sleeve and the movable tube are both sleeved on an I-shaped frame, and the I-shaped frame passes through the interior of the conical head, the lower end of the movable tube is fixedly connected to the receiving rod, the first spring is located in the conical head, two groups of spiral grooves are opened in the inner ring of the conical head, a pressure-bearing shaft is fixedly installed on the movable tube, both ends of the pressure-bearing shaft are respectively located in the two groups of spiral grooves, and the end of the pressure-bearing shaft is driven along the spiral grooves to rotate the conical head;

[0014] The rotation of the conical head can not only avoid the blockage of the material, but also enable the material to pass through the conical head quickly, thereby ensuring that the material can quickly enter the smelting kettle.

[0015] Preferably, the pulverizing mechanism comprises two groups of pulverizing rollers, the two groups of pulverizing rollers mesh with each other, and the pulverizing rollers are rotatably installed in the material guide tube, one end of each group of pulverizing rollers is equipped with a gear, the two groups of gears mesh with each other, two groups of support columns, the two groups of support columns are respectively arranged on one side of the two groups of pulverizing rollers, the support columns are rotatably installed in the material guide tube, a plurality of groups of scraping teeth fixedly installed on the support columns, a second spring arranged above the support columns, a plurality of groups of annular tooth grooves are distributed on the pulverizing rollers, the end of the scraping teeth is close to the inner circle of the annular tooth grooves, one end of the second spring is fixedly connected to a group of scraping teeth, and the other end of the second spring is fixedly connected to the inner wall of the material guide tube;

[0016] The rebound force of the second spring acts on a group of scraper teeth, so that the ends of several groups of scraper teeth are closely attached to the corresponding inner ring of the annular tooth groove. As the crushing roller rotates, the scraper teeth will shovel away the material debris attached to the annular tooth groove to avoid the accumulation of material debris in the annular tooth groove, thereby ensuring the crushing effect of the crushing roller on the material.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. When the crushing mechanism crushes the antimony-containing material, the inside of the discharge hole is filled with the rotating spiral feed shaft and the antimony-containing material, so that the dust generated by the crushing cannot enter the storage box through the discharge hole, thereby preventing the dust from drifting to the outside. Secondly, the length of the cover plate is much longer than the length of the rectangular chute. When the plugging head releases the blockage of the tapered mouth, the rectangular chute is always blocked by the cover plate, thereby preventing dust and heat emitted by the smelting kettle from flowing out of the rectangular chute, ensuring the stability of the temperature inside the smelting kettle.

[0019] 2. The rotating sleeve hits the upper end of the I-beam frame and cannot move. At this time, the conical head cannot move together with the rotating sleeve, and the movable tube will continue to move upward along the I-beam frame for a certain distance and compress the first spring. At the same time, the I-beam frame drives the end of the pressure-bearing shaft to slide along the spiral groove. Under the guidance of the spiral groove, the conical head rotates, and then the movable tube moves downward for a certain distance, and the length of the distance is equal to the length of the above-mentioned movable tube continuing to move upward for a certain distance. Due to the rebound force of the first spring, the rotating sleeve will always hit the upper end of the I-beam frame during the downward movement of the movable tube, and the end of the pressure-bearing shaft will slide along the spiral groove, causing the conical head to rotate again, repeating the above actions to make the movable tube move up and down continuously, so that the conical head keeps rotating. The rotation of the conical head can not only avoid material blockage, but also enable the material to pass through the conical head quickly, thereby ensuring that the material can quickly enter the smelting kettle.

[0020] 3. During the rotation of the crushing roller, the second spring is in a stretched state, and the rebound force of the second spring acts on a group of scraping teeth, so that the ends of several groups of scraping teeth are close to the corresponding inner ring of the annular tooth groove. As the crushing roller rotates, the scraping teeth will shovel away the material debris attached to the annular tooth groove to avoid the accumulation of material debris in the annular tooth groove, thereby ensuring the crushing effect of the crushing roller on the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the structure of the extraction device of the present invention.

[0023] Figure 2 It is a schematic cross-sectional view of the structure of the extraction device of the present invention.

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 The present invention is a cross-sectional schematic diagram of the material guide pipe, I-shaped frame, plugging head and receiving rod assembly.

[0026] Figure 5 It is a cross-sectional schematic diagram of the plugging head of the present invention.

[0027] Figure 6 It is a schematic diagram of the combination of the material guide tube and the crushing mechanism in cross section of the present invention.

[0028] Figure 7 It is a schematic diagram of the crushing mechanism of the present invention.

[0029] In the figure: 1, smelting kettle; 2, material guide pipe; 201, tapered mouth; 202, rectangular chute; 3, crushing mechanism; 4, opening and closing mechanism; 5, storage box; 51, discharge hole; 6, spiral feed shaft; 401, I-shaped frame; 402, plugging head; 403, receiving rod; 404, covering plate; 405, electric push rod; 4021, tapered head; 211, spiral chute; 4022, screw-on sleeve; 4023, movable pipe; 4024, first spring; 241, pressure shaft; 301, crushing roller; 3011, annular tooth groove; 302, gear; 303, support column; 304, scraping teeth; 305, second spring. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] Embodiment 1

[0032] A method for extracting antimony metal according to an embodiment of the present invention comprises the following steps:

[0033] Step 1: Place the antimony-containing material into a drying device for drying and preheating;

[0034] Step 2: Put the dried and preheated antimony-containing material into an electric thermal volatilization device, and perform closed-type crushing on the material by a crushing mechanism 3 in the electric thermal volatilization device. The crushed material directly falls into a smelting kettle 1 for volatilization and smelting to obtain antimony-containing fume;

[0035] Step 3: passing the antimony-containing flue gas into a first dust collecting device for dust collection to obtain antimony oxide dust;

[0036] Step 4: Mix the antimony oxide dust with a reducing agent, and then place the mixture into an electric thermal reduction device for reduction smelting to obtain metallic antimony and reduced slag.

[0037] Furthermore, in order to optimize the extraction method of antimony metal, the embodiment of the present invention improves the electrothermal volatilization device, that is, the antimony metal extraction device, by sealingly connecting the crushing mechanism 3 with the smelting kettle 1, so that the antimony-containing material is crushed and transported in a closed environment, thereby not only preventing the material dust from drifting to the outside, but also preventing the heat inside the smelting kettle from being lost to the outside.

[0038] Embodiment 2

[0039] like Figures 1 to 3 As shown, an antimony metal extraction device, that is, an electrothermal volatilization device, is suitable for the above-mentioned antimony metal extraction method, comprising a smelting kettle 1, a material guide pipe 2 is fixedly installed on the upper end of the smelting kettle 1, a crushing mechanism 3 for crushing antimony-containing materials is arranged in the material guide pipe 2, an opening and closing mechanism 4 is arranged directly below the crushing mechanism 3, a material storage box 5 is fixedly connected to the upper end of the material guide pipe 2, a spiral feed shaft 6 is rotatably installed in the material storage box 5, and the opening and closing mechanism 4 includes an I-shaped frame 401, the I-shaped frame 401 is fixedly installed in the material guide pipe 2, and the material guide pipe 2 is provided with a crushing mechanism 3 for crushing antimony-containing materials. A conical mouth 201 is provided in the tube 2, a plugging head 402 movably mounted on an I-shaped frame 401 for opening and closing the conical mouth 201, a receiving rod 403 fixedly connected to the lower end of the plugging head 402, an electric push rod 405 for driving the receiving rod 403, a rectangular slide groove 202 is provided on the material guide tube 2, the receiving rod 403 passes through the rectangular slide groove 202, and a covering plate 404 for plugging the rectangular slide groove 202 is fixedly installed on the receiving rod 403, and a discharge hole 51 for discharging antimony-containing materials is provided at the bottom of the storage box 5.

[0040] Specifically, the guide pipe 2 and the cover plate 404 are both made of heat-insulating material, the spiral feed shaft 6 is coated with a rubber layer, the outer diameter of the spiral feed shaft 6 is equal to the inner diameter of the discharge hole 51, and in the initial state, the plugging head 402 blocks the conical opening 201. When the antimony-containing material needs to be smelted, the antimony-containing material to be smelted is first put into the storage box 5, and then the spiral feed shaft 6 is driven by a motor to rotate. As the spiral feed shaft 6 rotates, the antimony-containing material in the storage box 5 is discharged into the guide pipe 2 through the discharge hole 51. The antimony-containing material is then dropped onto the pulverizing mechanism 3, and then pulverized by the pulverizing mechanism 3. The pulverized antimony-containing material is stored between the pulverizing mechanism 3 and the conical opening 201. When the space between the pulverizing mechanism 3 and the conical opening 201 is filled with antimony-containing material, the operation of the spiral feed shaft 6 and the pulverizing mechanism 3 is stopped, and the electric push rod 405 is started. The electric push rod 405 pulls the receiving rod 403 to move upward along the rectangular chute 202, and at the same time, the receiving rod 403 drives the sealing plate 404 and the sealing head 402 to move upward. The plugging head 402 will slide upward along the I-shaped frame 401, so that the plugging head 402 releases the blocking of the conical opening 201, and the crushed antimony-containing material will fall into the smelting kettle 1 through the conical opening 201, until all the antimony-containing material between the crushing mechanism 3 and the conical opening 201 falls into the smelting kettle 1, and finally the crushed antimony-containing material is volatilized and smelted by the smelting kettle 1. Compared with the prior art, during the crushing process of the antimony-containing material by the crushing mechanism 3, the inside of the discharge hole 51 is The spiral feed shaft 6 is filled with antimony-containing materials, so that the dust generated by the crushing cannot enter the storage box 5 through the discharge hole 51, thereby preventing the dust from drifting to the outside. Secondly, the length of the cover plate 404 is much longer than the length of the rectangular chute 202. When the sealing head 402 releases the sealing of the tapered mouth 201, the rectangular chute 202 is always in a state of being blocked by the cover plate 404, thereby preventing dust and heat emitted from the smelting kettle 1 from flowing out of the rectangular chute 202, ensuring the internal temperature of the smelting kettle 1 is stable.

[0041] like Figure 4 and Figure 5 As shown, the plugging head 402 includes a conical head 4021 for opening and closing the conical mouth 201, a screw-on sleeve 4022 rotatably installed at the upper end of the conical head 4021, a movable tube 4023 movably plugged into the conical head 4021, and a first spring 4024 sleeved on the movable tube 4023. The screw-on sleeve 4022 and the movable tube 4023 are both sleeved on the I-shaped frame 401, and the I-shaped frame 401 passes through the interior of the conical head 4021. The lower end of the movable tube 4023 is fixedly connected to the receiving rod 403. The first spring 4024 is located in the conical head 4021. Two groups of spiral grooves 211 are opened in the inner circle of the conical head 4021. A pressure-bearing shaft 241 is fixedly installed on the movable tube 4023. Both ends of the pressure-bearing shaft 241 are respectively located in the two groups of spiral grooves 211. The end of the pressure-bearing shaft 241 is driven along the spiral grooves 211 to rotate the conical head 4021.

[0042] Specifically, when the plugging head 402 releases the blockage of the conical opening 201, a large amount of crushed antimony-containing materials will flow through the plugging head 402 to the conical opening 201. At this time, the plugging head 402 not only hinders the flow of the materials, affecting the rate at which the materials enter the smelting kettle 1, but also easily causes the materials to be blocked between the plugging head 402 and the inner wall of the material storage box 5, so that the materials cannot enter the smelting kettle 1 normally. Therefore, when the receiving rod 403 drives the plugging head 402 along the working When the I-shaped frame 401 slides upward, the conical head 4021, the rotary sleeve 4022, the movable tube 4023 and other components will move upward along the I-shaped frame 401 together, so that the conical head 4021 releases the blockage of the conical opening 201, until the rotary sleeve 4022 reaches the upper end of the I-shaped frame 401 and cannot move. At this time, the conical head 4021 and the rotary sleeve 4022 cannot move together, and the movable tube 4023 will continue to move upward along the I-shaped frame 401 for a certain distance, and The first spring 4024 is compressed, and at the same time, the I-shaped frame 401 drives the end of the pressure-bearing shaft 241 to slide along the spiral groove 211. Under the guidance of the spiral groove 211, the conical head 4021 is rotated, and then the movable pipe 4023 is moved downward by a certain distance, and the length of the distance is equal to the length of the movable pipe 4023 continuing to move upward by a certain distance. Due to the rebound force of the first spring 4024, the rotating sleeve 4022 will always press against the upper end of the I-shaped frame 401 during the downward movement of the movable pipe 4023. At the same time, the end of the pressure-bearing shaft 241 slides along the spiral groove 211, causing the conical head 4021 to rotate again. The above actions are repeated to make the movable pipe 4023 move up and down continuously, so that the conical head 4021 keeps rotating. The rotation of the conical head 4021 can not only avoid blockage of materials, but also enable materials to quickly pass through the conical head 4021, thereby ensuring that the materials can quickly enter the smelting kettle 1.

[0043] like Figure 6 and Figure 7 As shown, the pulverizing mechanism 3 includes two groups of pulverizing rollers 301, which are meshed with each other and rotatably installed in the guide tube 2. One end of each group of pulverizing rollers 301 is equipped with a gear 302, which meshes with each other. Two groups of support columns 303 are respectively arranged on one side of the two groups of pulverizing rollers 301, and the support columns 303 are rotatably installed in the guide tube 2. Several groups of scraping teeth 304 are fixedly installed on the support columns 303, and a second spring 305 is arranged above the support columns 303. Several groups of annular tooth grooves 3011 are distributed on the pulverizing roller 301, and the ends of the scraping teeth 304 are tightly attached to the inner circle of the annular tooth grooves 3011. One end of the second spring 305 is fixedly connected to a group of scraping teeth 304, and the other end of the second spring 305 is fixedly connected to the inner wall of the guide tube 2.

[0044] Specifically, when the pulverizing mechanism 3 pulverizes the material, the motor drives a group of pulverizing rollers 301 to rotate together with the corresponding gears 302, and the gears 302 mesh with another group of gears 302 to drive the other group of pulverizing rollers 301 to rotate. The two groups of pulverizing rollers 301 rotating synchronously will pulverize the material. In the process of pulverizing the material, the material is squeezed and torn by the teeth of the pulverizing rollers 301, so that the debris in the material is easily attached to the annular tooth groove 3011 on the pulverizing roller 301. As the material in the annular tooth groove 3011 is pulverized, the material is crushed. The accumulation of material debris will affect the material crushing effect of the crushing roller 301. Therefore, during the rotation of the crushing roller 301, the second spring 305 is in a stretched state. The rebound force of the second spring 305 acts on a group of scraping teeth 304, so that the ends of several groups of scraping teeth 304 are tightly attached to the corresponding inner circles of the annular tooth grooves 3011. As the crushing roller 301 rotates, the scraping teeth 304 will shovel away the material debris attached to the annular tooth grooves 3011 to avoid the accumulation of material debris in the annular tooth grooves 3011, thereby ensuring the material crushing effect of the crushing roller 301.

[0045] Working principle: first, put the antimony-containing material to be smelted into the storage box 5, and then drive the spiral feed shaft 6 to rotate through the motor. As the spiral feed shaft 6 rotates, the antimony-containing material in the storage box 5 is discharged into the guide pipe 2 through the discharge hole 51, and the antimony-containing material falls onto the crushing mechanism 3. Then, the antimony-containing material is crushed by the crushing mechanism 3. The crushed antimony-containing material will be stored between the crushing mechanism 3 and the conical port 201. When the space between the crushing mechanism 3 and the conical port 201 is full of antimony-containing material, stop the operation of the spiral feed shaft 6 and the crushing mechanism 3, and start the electric pusher. Rod 405, the electric push rod 405 pulls the receiving rod 403 to move upward along the rectangular slide groove 202, and at the same time, the receiving rod 403 drives the sealing plate 404 and the plugging head 402 to move upward together, and the plugging head 402 will slide upward along the I-shaped frame 401, so that the plugging head 402 releases the blockage of the tapered mouth 201, and the crushed antimony-containing material will fall into the smelting kettle 1 through the tapered mouth 201, until the antimony-containing material between the crushing mechanism 3 and the tapered mouth 201 falls into the smelting kettle 1, and finally the crushed antimony-containing material is volatilized and smelted through the smelting kettle 1;

[0046] When the receiving rod 403 drives the blocking head 402 to slide upward along the I-shaped frame 401, the conical head 4021, the rotating sleeve 4022, the movable tube 4023 and other components will move upward along the I-shaped frame 401 together, so that the conical head 4021 releases the blocking of the conical mouth 201, until the rotating sleeve 4022 reaches the upper end of the I-shaped frame 401 and cannot move. At this time, the conical head 4021 and the rotating sleeve 4022 cannot move together, and the movable tube 4023 will continue to move upward along the I-shaped frame 401 for a certain distance and compress the first spring 4024. At the same time, the I-shaped frame 401 drives the end of the pressure-bearing shaft 241 along the spiral groove. 211 slides, under the guidance of the spiral slide groove 211, the conical head 4021 rotates, and then the movable tube 4023 moves downward for a certain distance, and the length of the distance is equal to the length of the movable tube 4023 continuing to move upward for a certain distance. Due to the rebound force of the first spring 4024, the rotating sleeve 4022 will always press against the upper end of the I-shaped frame 401 during the downward movement of the movable tube 4023. At the same time, the end of the pressure-bearing shaft 241 slides along the spiral slide groove 211, so that the conical head 4021 rotates again. Repeat the above actions to make the movable tube 4023 move up and down continuously, so that the conical head 4021 keeps rotating;

[0047] When the crushing mechanism 3 crushes the material, a group of crushing rollers 301 are driven by the motor to rotate together with the corresponding gear 302. The gear 302 meshes with another group of gears 302 to drive the other group of crushing rollers 301 to rotate. The two groups of crushing rollers 301 rotating synchronously will crush the material. In the process of crushing the material, the material is squeezed and torn by the teeth of the crushing roller 301, so that the debris in the material is easily attached to the annular tooth groove 3011 on the crushing roller 301. As the material debris accumulates in the annular tooth groove 3011, the crushing effect of the crushing roller 301 on the material will be affected. Therefore, in the process of rotating the crushing roller 301, the second spring 305 is in a stretched state. The rebound force of the second spring 305 acts on a group of scraping teeth 304, so that the ends of several groups of scraping teeth 304 are all close to the corresponding inner ring of the annular tooth groove 3011. As the crushing roller 301 rotates, the scraping teeth 304 shovel away the material debris attached to the annular tooth groove 3011.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An antimony metal extraction device, comprising a smelting kettle (1), characterized in that: A material guide pipe (2) is fixedly mounted on the upper end of the smelting kettle (1), a crushing mechanism (3) for crushing antimony-containing materials is arranged inside the material guide pipe (2), an opening and closing mechanism (4) is arranged directly below the crushing mechanism (3), a material storage box (5) is fixedly connected to the upper end of the material guide pipe (2), and a spiral feed shaft (6) is rotatably mounted inside the material storage box (5); The opening and closing mechanism (4) comprises: An I-shaped frame (401), the I-shaped frame (401) being fixedly installed in a material guide pipe (2), the material guide pipe (2) being provided with a tapered opening (201); A plugging head (402) movably mounted on the I-shaped frame (401) for opening and closing the tapered opening (201); A receiving rod (403) fixedly connected to the lower end of the plugging head (402); An electric push rod (405) for driving the receiving rod (403); The guide tube (2) is provided with a rectangular chute (202), the receiving rod (403) passes through the rectangular chute (202), and a cover plate (404) for sealing the rectangular chute (202) is fixedly mounted on the receiving rod (403), and a discharge hole (51) for discharging antimony-containing materials is provided at the bottom of the storage box (5); The plugging head (402) comprises a conical head (4021) used for opening and closing the conical port (201); Rotating a screw-on sleeve (4022) mounted on the upper end of the conical head (4021); A movable tube (4023) movably plugged into the conical head (4021); A first spring (4024) sleeved on the movable tube (4023); The rotating sleeve (4022) and the movable tube (4023) are both mounted on the I-shaped frame (401), and the I-shaped frame (401) passes through the interior of the conical head (4021). The lower end of the movable tube (4023) is fixedly connected to the receiving rod (403). The first spring (4024) is located in the conical head (4021). Two groups of spiral grooves (211) are provided in the inner ring of the conical head (4021). A pressure-bearing shaft (241) is fixedly mounted on the movable tube (4023). Both ends of the pressure-bearing shaft (241) are respectively located in the two groups of spiral grooves (211). The end of the pressure-bearing shaft (241) is driven along the spiral grooves (211) to rotate the conical head (4021).

2. The antimony metal extraction device according to claim 1, characterized in that: The pulverizing mechanism (3) comprises: Two groups of crushing rollers (301), the two groups of crushing rollers (301) are engaged with each other, and the crushing rollers (301) are rotatably mounted in the material guide tube (2); One end of each of the two groups of crushing rollers (301) is provided with a gear (302), and the two groups of gears (302) are meshed with each other; Two groups of support columns (303), the two groups of support columns (303) are respectively arranged on one side of the two groups of crushing rollers (301), and the support columns (303) are rotatably installed in the material guide pipe (2); A plurality of groups of scraping teeth (304) fixedly mounted on the support column (303); A second spring (305) is arranged above the support column (303).

3. The antimony metal extraction device according to claim 2, characterized in that: A plurality of groups of annular tooth grooves (3011) are distributed on the pulverizing roller (301), and the ends of the scraping teeth (304) are closely attached to the inner ring of the annular tooth grooves (3011).

4. The antimony metal extraction device according to claim 3, characterized in that: One end of the second spring (305) is fixedly connected to a group of scraping teeth (304), and the other end of the second spring (305) is fixedly connected to the inner wall of the material guide tube (2).

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