A self-heating roasting device for molybdenum concentrate

Abstract

The present invention discloses a self-heating roasting device for molybdenum concentrate. The present invention relates to the technical field of roasting equipment and includes a housing and a connecting frame fixedly connected to the upper surface of the housing; a heating mechanism for providing a high-temperature environment during the roasting of molybdenum concentrate; an air flow exchange mechanism for guiding the high-temperature gas generated during the roasting of molybdenum concentrate, and an exchange box arranged on the outer surface of the air flow exchange mechanism. By arranging the air flow exchange mechanism, the high-temperature sulfur dioxide gas generated by the reaction of molybdenum concentrate with oxygen in a high-temperature environment can be reused, so that the high-temperature sulfur dioxide gas contacts the molybdenum concentrate to be oxidized, thereby achieving the preheating work of molybdenum concentrate, and then accelerating the oxidation work of molybdenum concentrate during the subsequent oxidation reaction, thereby achieving the reuse of heat energy and the effect of self-heating to improve the reaction efficiency of molybdenum concentrate; achieving the effect of preheating molybdenum concentrate with the high-temperature gas generated by roasting.

Description

Technical Field

[0001] The present invention relates to the technical field of roasting equipment, and particularly to a self-heating roasting device for molybdenum concentrate. Background Art

[0002] Roasting equipment is a key equipment for high-temperature heat treatment in industries such as metallurgy, chemical engineering, and building materials. It is mainly used for ore decomposition, material calcination, volatile removal, and adjustment of physical and chemical properties. Its core process is to achieve phase change or chemical reaction of materials by controlling temperature (usually 500 - 1500 °C), atmosphere (oxidizing, reducing, or inert), and residence time. Common roasting equipment includes rotary kilns, fluidized bed roasting furnaces, multi-hearth furnaces, and tunnel kilns, etc. The rotary kiln uses an inclined rotating cylinder to achieve uniform heating of materials; the fluidized bed furnace uses air flow to suspend particles to strengthen mass transfer and heat transfer; the multi-hearth furnace heats materials step by step through multiple hearths and is suitable for fine processing. The equipment usually consists of a refractory lining, a heating system, an exhaust gas treatment device, and an automatic control system, and needs to take into account requirements such as high temperature resistance, sealing, and environmental protection.

[0003] During the roasting process of molybdenum concentrate, if the high-temperature gas generated is not recycled, it will cause serious energy waste and environmental pollution problems. The high-temperature flue gas discharged from the roasting furnace usually reaches a temperature of 500 - 800 °C and contains a large amount of waste heat. Direct emission will cause significant heat energy loss, increase fuel consumption and production costs. At the same time, these flue gases contain high-concentration sulfur dioxide of 5% - 10% and harmful substances such as dust. Direct emission without treatment will exacerbate air pollution, form acid rain, and harm the surrounding ecological environment. Summary of the Invention

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A self-heating roasting device for molybdenum concentrate, including a housing, and a connecting frame fixedly connected to the upper surface of the housing;

[0005] A heating mechanism, which is used to provide a high-temperature environment during the roasting of molybdenum concentrate. By setting the heating mechanism, molybdenum concentrate can be heated, and continuous high temperature can be provided for molybdenum concentrate, so that it can be gradually oxidized layer by layer under a temperature gradient of 500 - 700 °C. Molybdenum disulfide reacts with oxygen to generate molybdenum trioxide and sulfur dioxide gas, and the internal temperature can be controlled to prevent molybdenum trioxide from volatilizing and being damaged due to excessive temperature;

[0006] An air flow exchange mechanism for guiding the high-temperature gas generated by the roasting of molybdenum concentrate, and an exchange box arranged on the outer surface of the air flow exchange mechanism. By setting the air flow exchange mechanism, the high-temperature sulfur dioxide gas generated by the reaction of molybdenum concentrate with oxygen in a high-temperature environment can be reused, so that the high-temperature sulfur dioxide gas contacts the molybdenum concentrate to be oxidized, thereby achieving the preheating work of the molybdenum concentrate. Furthermore, during the subsequent oxidation reaction, the oxidation work of the molybdenum concentrate is accelerated, thereby achieving the reuse of heat energy and the effect of self-heating to improve the reaction efficiency of molybdenum concentrate;

[0007] A slag collection mechanism for collecting the dust and slag generated by the oxidation reaction of molybdenum concentrate. By setting the slag collection mechanism, the high-temperature sulfur dioxide gas guided by the air flow exchange mechanism is filtered, and then the dust and crushed slag generated by the oxidation reaction are collected and blocked, thereby preventing the crushed slag and dust from contacting the molybdenum concentrate placed in the inner cavity of the placement mechanism again, resulting in a large amount of dust generated during the roasting of molybdenum concentrate;

[0008] A placement mechanism for placing and discharging the molybdenum concentrate to be preheated. By setting the placement mechanism, the molybdenum concentrate to be preheated can be placed, so as to contact the high-temperature gas extracted by the air flow exchange mechanism, thereby preheating the molybdenum concentrate before the roasting operation. Thus, during the subsequent roasting of the molybdenum concentrate, the oxidation reaction rate of the molybdenum concentrate is accelerated, and then the preheated molybdenum concentrate falls into the inner cavity of the heating mechanism;

[0009] The air flow exchange mechanism includes a support frame fixedly connected to the upper surface of the exchange box. The top of the support frame is fixedly connected with a stepping motor. The output end of the stepping motor is installed with a rotating rod through a coupling. The rotating rod penetrates the exchange box, and the bottom end of the rotating rod is fixedly connected with a fan blade. By setting the stepping motor, after connecting the power supply and turning on the switch, the rotating rod can drive the fan blade to rotate, and then the fan blade generates an air flow from bottom to top when rotating, so that the high-temperature gas generated by the reaction in the inner cavity of the heating mechanism enters the inner cavity of the exchange box.

[0010] Preferably, the heating mechanism is arranged on the lower surface of the outer shell. The exchange box is fixedly connected to the top of the connecting frame. The air flow exchange mechanism is arranged on the top of the connecting frame through the exchange box. The slag collection mechanism is fixedly connected to the inner cavity of the exchange box. The placement mechanism is arranged in the inner cavity of the outer shell. The outer surface of the outer shell is penetrated by an exhaust valve. A clamping groove is formed on the outer side of the outer shell, and a blocking plate is slidably connected to the clamping groove formed on the outer side of the outer shell.

[0011] Preferably, the heating mechanism includes a roasting box, which is arranged directly below the outer shell. A permeable material net is fixedly connected to the top of the inner wall of the roasting box. An air inlet pipe penetrates through the outer side surface of the roasting box, and a guide air pipe also penetrates through the outer side surface of the roasting box. A fixed frame is fixedly connected to the side of the roasting box away from the air inlet pipe. A high-voltage power supply is fixedly connected to the end of the fixed frame. The output end of the high-voltage power supply is provided with a wire, which penetrates through the roasting box, and the end of the wire is fixedly connected with a heating plate, and the heating plate is arranged on the bottom surface of the inner cavity of the roasting box.

[0012] Preferably, a breathable disk is rotatably connected to the outer surface of the rotating rod. A rotating ring is fixedly connected to the outer ring of the breathable disk. A first limiting ring is rotatably connected to the upper surface of the rotating ring, and the first limiting ring penetrates through the lower surface of the exchange box. A first gear is fixedly connected to the outer surface of the rotating ring.

[0013] Preferably, a limiting shell is rotatably connected to the lower surface of the rotating ring. A support frame is fixedly connected to the outer surface of the limiting shell, and the end of the support frame away from the limiting shell is fixedly connected to the outer side surface of the exchange box. An air inlet is fixedly connected to the lower surface of the limiting shell, and the air inlet is fixedly connected to the end of the guide air pipe away from the roasting box.

[0014] Preferably, the slag collection mechanism includes a connecting shell, which is fixedly connected to the upper surface of the exchange box. A first breathable hole is opened on the outer side surface of the connecting shell. A slag collection box is movably connected to the inner cavity of the connecting shell. A second breathable hole is opened on the outer side surface of the slag collection box, and the first breathable hole is aligned with the second breathable hole. A sieve plate is fixedly connected to the bottom of the inner wall of the slag collection box, and a handle is fixedly connected to the upper surface of the slag collection box.

[0015] Preferably, the slag collection mechanism further includes a stirring mechanism. The stirring mechanism includes a second limiting ring, which is fixedly connected to the lower surface of the exchange box. A rotating sleeve is rotatably connected to the outer surface of the second limiting ring. A rotating shell is fixedly connected to the lower surface of the rotating sleeve. A hole is opened on the bottom surface of the inner cavity of the rotating shell. A first wrapping cover is rotatably connected to the outer surface of the rotating shell. A first sealing ring is fixedly connected to the bottom end of the first wrapping cover. A second gear is fixedly connected to the outer surface of the rotating shell, and the second gear meshes with the first gear.

[0016] Preferably, a fixed frame is fixedly connected to the lower surface of the rotating shell. The number of the fixed frames is several, and several of the fixed frames are evenly distributed. A stirring plate is fixedly connected to the bottom end of the fixed frame. A rotating plate is rotatably connected to the inner cavity of the rotating shell. A connecting column is fixedly connected to the lower surface of the rotating plate, and a second wrapping cover is fixedly connected to the bottom end of the connecting column. A second sealing ring is fixedly connected to the lower surface of the second wrapping cover.

[0017] Preferably, the placing mechanism includes an orbital frame that penetrates the outer side surface of the housing. A sliding rod is slidably connected to the inner cavity of the orbital frame. A first spring is fixedly connected to the upper surface of the sliding rod, and the top end of the first spring is fixedly connected to the top surface of the inner cavity of the orbital frame. A limiting post is fixedly connected to the end of the sliding rod, and a first rotating ring is rotatably connected to the outer surface of the limiting post.

[0018] Preferably, a first support rod is fixedly connected to the lower surface of the first rotating ring. The end of the first support rod is fixedly connected to a first air-permeable frame. A first pressing plate is fixedly connected to the outer side surface of the first rotating ring. A second spring is fixedly connected to the upper surface of the first pressing plate, and the top end of the second spring is fixedly connected to the top surface of the inner cavity of the housing. A second rotating ring is rotatably connected to the outer surface of the limiting post. A second support rod is fixedly connected to the outer surface of the second rotating ring. The end of the second support rod is fixedly connected to a second air-permeable frame. The first air-permeable frame and the second air-permeable frame are sleeved on the outer surface of a first sealing ring. A second pressing plate is fixedly connected to the outer surface of the second rotating ring. A third spring is fixedly connected to the upper surface of the second pressing plate, and the top end of the third spring is fixedly connected to the top surface of the inner cavity of the housing.

[0019] The present invention provides a self-heating roasting device for molybdenum concentrate, which has the following beneficial effects:

[0020] First, in this self-heating roasting device for molybdenum concentrate, by setting a heating mechanism, the molybdenum concentrate can be heated, and a continuous high temperature can be provided to the molybdenum concentrate, so that it can be oxidized layer by layer under a temperature gradient of 500 - 700 °C. Molybdenum disulfide reacts with oxygen to generate molybdenum trioxide and sulfur dioxide gas, and the internal temperature can be controlled to prevent the volatilization and damage of molybdenum trioxide due to excessive temperature.

[0021] Second, in this self-heating roasting device for molybdenum concentrate, by setting an air flow exchange mechanism, the high-temperature sulfur dioxide gas generated by the reaction of molybdenum concentrate with oxygen in a high-temperature environment can be reused, so that the high-temperature sulfur dioxide gas contacts the molybdenum concentrate to be oxidized, thereby achieving the preheating work of the molybdenum concentrate. Then, during the subsequent oxidation reaction, the oxidation work of the molybdenum concentrate is accelerated, thus achieving the reuse of heat energy and the effect of self-heating to improve the reaction efficiency of molybdenum concentrate.

[0022] Third, in this self-heating roasting device for molybdenum concentrate, by setting a slag collection mechanism, the high-temperature sulfur dioxide gas guided by the air flow exchange mechanism is filtered, and then the dust and slag generated by the oxidation reaction are collected and blocked, so as to prevent the slag and dust from contacting the molybdenum concentrate placed in the inner cavity of the placing mechanism again, resulting in a large amount of dust generated during the roasting of the molybdenum concentrate.

[0023] IV. The self-heating roasting device for molybdenum concentrate can place the molybdenum concentrate to be preheated through the setting of a placing mechanism, so that it can come into contact with the high-temperature gas extracted by the gas flow exchange mechanism, thereby preheating the molybdenum concentrate before the roasting operation, accelerating the oxidation reaction rate of the molybdenum concentrate during the subsequent roasting of the molybdenum concentrate, and then making the preheated molybdenum concentrate fall into the inner cavity of the heating mechanism.

[0024] V. The self-heating roasting device for molybdenum concentrate can be connected to the exchange box through the setting of a connecting shell. When the molybdenum concentrate to be preheated needs to be poured into the inner cavity of the placing mechanism, the molybdenum concentrate can be directly placed in the inner cavity of the connecting shell, and then the molybdenum concentrate can fall into the inner cavity of the placing mechanism. When it is necessary to collect the slag and dust in the high-temperature hot gas, the slag collection box can be placed, and then the high-temperature hot gas can be guided into the inner cavity of the slag collection box through the first ventilation hole and the second ventilation hole. Then, through the screening of the sieve plate, the slag and dust impurities are blocked in the inner cavity of the slag collection box by the sieve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the external structure schematic diagram of a self-heating roasting device for molybdenum concentrate according to the present invention;

[0026] Figure 2 is the front view of the structure of a self-heating roasting device for molybdenum concentrate according to the present invention;

[0027] Figure 3 is the structure schematic diagram of the heating mechanism according to the present invention;

[0028] Figure 4 is the partial structure schematic diagram of a self-heating roasting device for molybdenum concentrate according to the present invention;

[0029] Figure 5 is the structure schematic diagram of the gas flow exchange mechanism according to the present invention;

[0030] Figure 6 is the sectional structure schematic diagram of the gas flow exchange mechanism according to the present invention;

[0031] Figure 7 is the structure schematic diagram of the slag collection mechanism according to the present invention;

[0032] Figure 8 is the sectional structure schematic diagram of the slag collection mechanism according to the present invention;

[0033] Figure 9 is the structure schematic diagram of the stirring mechanism according to the present invention;

[0034] Figure 10 is the partial sectional structure schematic diagram of the stirring mechanism according to the present invention;

[0035] Figure 11Structural schematic diagram of the placement mechanism of the present invention;

[0036] Figure 12 Structural schematic diagram of the first air-permeable frame of the present invention;

[0037] Figure 13 Structural schematic diagram of the second air-permeable frame of the present invention.

[0038] In the figure: 1. Outer shell; 2. Heating mechanism; 3. Connecting frame; 4. Exchange box; 5. Airflow exchange mechanism; 6. Slag collection mechanism; 7. Placement mechanism; 8. Baffle; 9. Exhaust valve; 21. Roasting box; 22. Material-passing net; 23. Inlet pipe; 24. Guide pipe; 25. Fixed frame; 26. High-voltage power supply; 27. Conducting wire; 28. Heating plate; 51. Support frame; 52. Stepper motor; 53. Rotating rod; 54. Fan blade; 55. Air-permeable disc; 56. Rotating ring; 57. First limit ring; 58. First gear; 59. Support frame; 510. Limit shell; 511. Air inlet; 61. Connecting shell; 62. First air-permeable hole; 63. Slag collection box; 64. Screening plate; 65. Second air-permeable hole; 66. Handle; 67. Stirring mechanism; 671. Second limit ring; 672. Rotating sleeve; 673. Rotating shell; 674. Second gear; 675. First wrapping cover; 676. First sealing ring; 677. Fixed frame; 678. Stirring plate; 679. Rotating plate; 6710. Connecting column; 6711. Second wrapping cover; 6712. Second sealing ring; 71. Track frame; 72. Sliding rod; 73. First spring; 74. Limit post; 75. First rotating ring; 76. First pressing plate; 77. Second spring; 78. First support rod; 79. First air-permeable frame; 710. Second rotating ring; 711. Second support rod; 712. Second air-permeable frame; 713. Second pressing plate; 714. Third spring. Detailed implementation manners

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners. The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0040] As Figures 1-13 shown, the present invention provides a technical solution: a self-heating roasting device for molybdenum concentrate, including an outer shell 1 and a connecting frame 3 fixedly connected to the upper surface of the outer shell 1;

[0041] Heating mechanism 2, which is used to provide a high-temperature environment during the roasting of molybdenum concentrate. By setting the heating mechanism 2, the molybdenum concentrate can be heated, and continuous high temperature can be provided to the molybdenum concentrate, so that it can be oxidized layer by layer under the temperature gradient of 500 - 700 °C. Molybdenum disulfide reacts with oxygen to generate molybdenum trioxide and sulfur dioxide gas, and the internal temperature can be controlled to prevent the volatilization and damage of molybdenum trioxide due to excessive temperature;

[0042] Airflow exchange mechanism 5, which is used to divert the high-temperature gas generated during the roasting of molybdenum concentrate, and the exchange box 4 arranged on the outer surface of the airflow exchange mechanism 5. By setting the airflow exchange mechanism 5, the high-temperature sulfur dioxide gas generated by the reaction of molybdenum concentrate with oxygen in a high-temperature environment can be reused, so that the high-temperature sulfur dioxide gas contacts the molybdenum concentrate to be oxidized, thereby achieving the preheating work of the molybdenum concentrate. Then, during the subsequent oxidation reaction, the oxidation work of the molybdenum concentrate is accelerated, thereby achieving the reuse of heat energy and the effect of self-heating to improve the reaction efficiency of molybdenum concentrate;

[0043] Slag collection mechanism 6, which is used to collect the dust and slag generated by the oxidation reaction of molybdenum concentrate. By setting the slag collection mechanism 6, the high-temperature sulfur dioxide gas diverted by the airflow exchange mechanism 5 is filtered, and then the dust and slag generated by the oxidation reaction are collected and blocked, so as to prevent the slag and dust from contacting the molybdenum concentrate placed in the inner cavity of the placement mechanism 7 again, resulting in a large amount of dust generated during the roasting of molybdenum concentrate;

[0044] Placement mechanism 7, which is used to place and leak the molybdenum concentrate to be preheated. By setting the placement mechanism 7, the molybdenum concentrate to be preheated can be placed, so as to contact the high-temperature gas extracted by the airflow exchange mechanism 5, so that the molybdenum concentrate can be preheated before the roasting operation. Then, during the subsequent roasting of the molybdenum concentrate, the oxidation reaction rate of the molybdenum concentrate is accelerated, and then the preheated molybdenum concentrate falls into the inner cavity of the heating mechanism 2;

[0045] The airflow exchange mechanism 5 includes a support frame 51, the support frame 51 is fixedly connected to the upper surface of the exchange box 4, the top of the support frame 51 is fixedly connected with a stepping motor 52, the output end of the stepping motor 52 is installed with a rotating rod 53 through a coupling, the rotating rod 53 penetrates the exchange box 4, and the bottom end of the rotating rod 53 is fixedly connected with a fan blade 54. By setting the stepping motor 52, after the power is connected and the switch is turned on, the rotating rod 53 can drive the fan blade 54 to rotate, so that the fan blade 54 generates an upward airflow when rotating, and then the high-temperature gas generated by the reaction in the inner cavity of the heating mechanism 2 enters the inner cavity of the exchange box 4.

[0046] The heating mechanism 2 is arranged on the lower surface of the outer shell 1. The exchange box 4 is fixedly connected to the top end of the connecting frame 3. The air flow exchange mechanism 5 is arranged on the top end of the connecting frame 3 through the exchange box 4. The slag collection mechanism 6 is fixedly connected to the inner cavity of the exchange box 4. The placing mechanism 7 is arranged in the inner cavity of the outer shell 1. An exhaust valve 9 penetrates through the outer surface of the outer shell 1. A clamping groove is formed on the outer side surface of the outer shell 1. A blocking plate 8 is slidably connected to the clamping groove formed on the outer side surface of the outer shell 1. By arranging the exhaust valve 9, after the reaction inside the device is completed, the sulfur dioxide gas generated by the reaction in the inner cavity of the outer shell 1 can be discharged and collected. By arranging the clamping groove, the blocking plate 8 can be limited, so that the blocking plate 8 can move horizontally in the inner cavity of the outer shell 1. Thus, when the blocking plate 8 is inserted into the inner cavity of the outer shell 1, the opening at the bottom of the outer shell 1 can be blocked, thereby preventing gas leakage. And when the blocking plate 8 is pulled out, the pre-heated molybdenite at the top can leak into the inner cavity of the heating mechanism 2. The heating mechanism 2 includes a roasting box 21. The roasting box 21 is arranged directly below the outer shell 1. A permeable material net 22 is fixedly connected to the top of the inner wall of the roasting box 21. An air inlet pipe 23 penetrates through the outer side surface of the roasting box 21. A guide pipe 24 penetrates through the outer side surface of the roasting box 21. A fixing frame 25 is fixedly connected to the side of the roasting box 21 away from the air inlet pipe 23. A high-voltage power supply 26 is fixedly connected to the end of the fixing frame 25. The output end of the high-voltage power supply 26 is provided with a wire 27. The wire 27 penetrates through the roasting box 21. The end of the wire 27 is fixedly connected to a heating plate 28. The heating plate 28 is arranged on the bottom surface of the inner cavity of the roasting box 21. By arranging the permeable material net 22, the molybdenite to be roasted can fall into the inner cavity of the roasting box 21 through the permeable material net 22. By arranging the air inlet pipe 23, the oxygen required for the oxidation reaction of molybdenite can be introduced into the inner cavity of the roasting box 21, so as to contact the molybdenite in the inner cavity of the roasting box 21 and complete the oxidation reaction of molybdenite. By arranging the high-voltage power supply 26, during operation, current can be transmitted through the wire 27 to the heating plate 28, so that the heating plate 28 generates high-temperature heat and rises to the specified temperature for the oxidation reaction of molybdenite, thereby achieving the oxidation reaction work of molybdenite.

[0047] The outer surface of the rotating rod 53 is rotatably connected to a ventilation disk 55. A rotating ring 56 is fixedly connected to the outer ring of the ventilation disk 55. The upper surface of the rotating ring 56 is rotatably connected to a first limiting ring 57. The first limiting ring 57 penetrates the lower surface of the exchange box 4. A first gear 58 is fixedly connected to the outer surface of the rotating ring 56. By providing the ventilation disk 55, the rotating ring 56 can be connected to the rotating rod 53, so that the rotating ring 56 rotates under the rotation of the rotating rod 53. At the same time, the air flow at the bottom of the rotating ring 56 can flow to the upper part through the holes on the surface of the ventilation disk 55. By providing the first limiting ring 57, the rotating ring 56 can be limited, so that the rotating ring 56 can rotate stably on the lower surface of the exchange box 4. The lower surface of the rotating ring 56 is rotatably connected to a limiting shell 510. A support frame 59 is fixedly connected to the outer surface of the limiting shell 510. One end of the support frame 59 away from the limiting shell 510 is fixedly connected to the outer side surface of the exchange box 4. An air inlet 511 is fixedly connected to the lower surface of the limiting shell 510. The air inlet 511 is fixedly connected to one end of the air guide pipe 24 away from the roasting box 21. By providing the support frame 59, the limiting shell 510 can be connected to the exchange box 4, so that the limiting shell 510 cooperates with the first limiting ring 57, and the rotating ring 56 can rotate stably between the first limiting ring 57 and the limiting shell 510. By providing the air inlet 511, the high-temperature hot air extracted from the roasting box 21 by the air guide pipe 24 can be discharged into the inner cavity of the limiting shell 510.

[0048] The slag collection mechanism 6 includes a connecting shell 61, the connecting shell 61 is fixedly connected to the upper surface of the exchange box 4, a first ventilation hole 62 is formed on the outer side surface of the connecting shell 61, a slag collection box 63 is movably connected to the inner cavity of the connecting shell 61, a second ventilation hole 65 is formed on the outer side surface of the slag collection box 63, the first ventilation hole 62 is aligned with the second ventilation hole 65, a screening plate 64 is fixedly connected to the bottom of the inner wall of the slag collection box 63, and a handle 66 is fixedly connected to the upper surface of the slag collection box 63. By providing the connecting shell 61, it can be connected to the exchange box 4. Then, when the preheated molybdenite concentrate needs to be poured into the inner cavity of the placement mechanism 7, the molybdenite concentrate can be directly placed in the inner cavity of the connecting shell 61, so that the molybdenite concentrate can fall into the inner cavity of the placement mechanism 7. When it is necessary to collect the slag and dust in the high-temperature hot steam, the slag collection box 63 can be placed. Then, through the first ventilation hole 62 and the second ventilation hole 65, the high-temperature hot steam is guided into the inner cavity of the slag collection box 63. Then, the high-temperature hot steam passes through the screening of the screening plate 64, and the slag and dust impurities are blocked by the screening plate 64 in the inner cavity of the slag collection box 63, thus completing the collection work of the slag and impurities in the high-temperature hot steam. The slag collection mechanism 6 further includes a stirring mechanism 67. The stirring mechanism 67 includes a second limiting ring 671, the second limiting ring 671 is fixedly connected to the lower surface of the exchange box 4, a rotating sleeve 672 is rotatably connected to the outer surface of the second limiting ring 671, a rotating shell 673 is fixedly connected to the lower surface of the rotating sleeve 672, a hole is formed on the bottom surface of the inner cavity of the rotating shell 673, a first wrapping cover 675 is rotatably connected to the outer surface of the rotating shell 673, a first sealing ring 676 is fixedly connected to the bottom end of the first wrapping cover 675, and a second gear 674 is fixedly connected to the outer surface of the rotating shell 673. The second gear 674 is engaged with the first gear 58. By providing the stirring mechanism 67, when the high-temperature hot steam flows into the inner cavity of the exchange box 4, the molybdenite concentrate to be preheated placed in the inner cavity of the placement mechanism 7 can be stirred, so that the high-temperature hot steam can fully contact the outer surface of the molybdenite concentrate, thus achieving the effect of fully and evenly preheating and heating the molybdenite concentrate. By providing the second limiting ring 671, the rotating shell 673 can be limited, so that the rotating shell 673 can rotate on the outer surface of the second limiting ring 671, thus causing the rotating shell 673 and the second gear 674 to rotate. By providing the second gear 674, when the first gear 58 rotates, the second gear 674 can be driven to rotate together, and finally the rotating shell 673 rotates. A fixing frame 677 is fixedly connected to the lower surface of the rotating shell 673. The number of the fixing frames 677 is several, and several of the fixing frames 677 are evenly distributed. A stirring plate 678 is fixedly connected to the bottom end of the fixing frame 677. A rotating plate 679 is rotatably connected to the inner cavity of the rotating shell 673, and a connecting column 6710 is fixedly connected to the lower surface of the rotating plate 679.The bottom end of the connecting column 6710 is fixedly connected with a second wrapping cover 6711, and the lower surface of the second wrapping cover 6711 is fixedly connected with a second sealing ring 6712. By setting the fixing frame 677, the stirring plate 678 can be connected to the rotating shell 673. When the rotating shell 673 rotates, the stirring plate 678 stirs the molybdenum concentrate placed in the inner cavity of the placing mechanism 7, so that when the molybdenum concentrate is preheated, it can fully contact with the high-temperature hot steam. By setting the rotating plate 679, the second wrapping cover 6711 and the second sealing ring 6712, they can cooperate with the first wrapping cover 675 and the first sealing ring 676 to wrap the top of the placing mechanism 7, preventing the molybdenum concentrate from splashing out of the placing mechanism 7 during the stirring process.,

[0049] The placement mechanism 7 includes an orbital frame 71 which penetrates the outer side surface of the housing 1. A sliding rod 72 is slidably connected to the inner cavity of the orbital frame 71. A first spring 73 is fixedly connected to the upper surface of the sliding rod 72, and the top end of the first spring 73 is fixedly connected to the top surface of the inner cavity of the orbital frame 71. A limiting post 74 is fixedly connected to the end of the sliding rod 72. A first rotating ring 75 is rotatably connected to the outer surface of the limiting post 74. By providing the orbital frame 71, the sliding rod 72 can be limited, enabling the sliding rod 72 to vertically move up and down in the inner cavity of the orbital frame 71. By providing the first spring 73, elastic potential energy can be stored after the sliding rod 72 moves downward, and then when the sliding rod 72 is not subjected to a downward pressing force, the sliding rod 72 can rebound. By providing the limiting post 74, the first rotating ring 75 can be limited, enabling the first rotating ring 75 to stably rotate on the outer surface of the limiting post 74. A first support rod 78 is fixedly connected to the lower surface of the first rotating ring 75, and a first ventilation frame 79 is fixedly connected to the end of the first support rod 78. A first pressing plate 76 is fixedly connected to the outer side surface of the first rotating ring 75, and a second spring 77 is fixedly connected to the upper surface of the first pressing plate 76, and the top end of the second spring 77 is fixedly connected to the top surface of the inner cavity of the housing 1. A second rotating ring 710 is rotatably connected to the outer surface of the limiting post 74. A second support rod 711 is fixedly connected to the outer surface of the second rotating ring 710, and a second ventilation frame 712 is fixedly connected to the end of the second support rod 711. The first ventilation frame 79 and the second ventilation frame 712 are sleeved on the outer surface of the first sealing ring 676. A second pressing plate 713 is fixedly connected to the outer surface of the second rotating ring 710, and a third spring 714 is fixedly connected to the upper surface of the second pressing plate 713, and the top end of the third spring 714 is fixedly connected to the top surface of the inner cavity of the housing 1. By providing the second spring 77 and the third spring 714, the first pressing plate 76 and the second pressing plate 713 can be respectively pulled. Then when the sliding rod 72 drives the limiting post 74 to move downward, the second spring 77 and the third spring 714 respectively pull the first pressing plate 76 and the second pressing plate 713, thereby causing the first rotating ring 75 and the second rotating ring 710 to rotate. Finally, the first ventilation frame 79 and the second ventilation frame 712 are no longer closed but in an open state, so that the molybdenite concentrate placed inside can leak out.

[0050] Working principle: When in use, the operator takes out the slag collection box 63 and places the molybdenum concentrate to be preheated in the inner cavity of the connection shell 61. Due to the gravity of the molybdenum concentrate itself, the molybdenum concentrate will fall into the inner cavities of the first air-permeable frame 79 and the second air-permeable frame 712 through the holes at the bottom of the inner cavity of the rotating shell 673; then the operator starts the high-voltage power supply 26, so that the current flows through the wire 27 to the heating plate 28, and finally the heating plate 28 generates heat. At the same time, the operator connects the stepping motor 52 to the power supply and turns on the switch, so that the rotating rod 53 drives the fan blade 54 and the rotating ring 56 to rotate. When the rotating ring 56 rotates, the first gear 58 meshes with the second gear 674, and then the rotating shell 673 drives the stirring plate 678 to stir the molybdenum concentrate located in the inner cavities of the first air-permeable frame 79 and the second air-permeable frame 712. Driven by the rotation of the fan blade 54, the heated air in the inner cavity of the roasting box 21 will enter the air inlet 511 through the air duct 24, and finally enter the inner cavity of the exchange box 4 and contact with the molybdenum concentrate to achieve the preheating work of the molybdenum concentrate. After that, press the sliding rod 72. Under the action of the second spring 77 and the third spring 714, the first pressing plate 76 and the second pressing plate 713 are respectively pulled. Then, when the sliding rod 72 drives the limit post 74 to move downward, the second spring 77 and the third spring 714 respectively pull the first pressing plate 76 and the second pressing plate 713, so that the first rotating ring 75 and the second rotating ring 710 rotate. Finally, the first air-permeable frame 79 and the second air-permeable frame 712 are no longer closed but in an open state, so that the molybdenum concentrate placed inside can leak out and fall into the inner cavity of the roasting box 21; under the heating of the heating plate 28, the molybdenum concentrate is heated and high-temperature gas is generated. Then, place the molybdenum concentrate to be preheated in the inner cavity of the connection shell 61 again and cover the slag collection box 63, and the slag and impurities in the high-temperature gas can be collected while the molybdenum concentrate is preheated.

[0051] Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative work shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A self-heating roasting device for molybdenum concentrate, characterized in that, Including: A housing (1), and a connecting frame (3) fixedly connected to the upper surface of the housing (1); A heating mechanism (2) for providing a high-temperature environment during the roasting of molybdenum concentrate; An air flow exchange mechanism (5) for guiding the high-temperature gas generated during the roasting of molybdenum concentrate, and an exchange box (4) provided on the outer surface of the air flow exchange mechanism (5); A slag collection mechanism (6) for collecting the dust and slag generated by the oxidation reaction of molybdenum concentrate; A placement mechanism (7) for placing and discharging the molybdenum concentrate to be preheated; The air flow exchange mechanism (5) includes a support frame (51) fixedly connected to the upper surface of the exchange box (4). The top end of the support frame (51) is fixedly connected with a stepping motor (52). The output end of the stepping motor (52) is installed with a rotating rod (53) through a coupling. The rotating rod (53) penetrates the exchange box (4), and the bottom end of the rotating rod (53) is fixedly connected with a fan blade (54); The outer surface of the rotating rod (53) is rotatably connected with a breathable disc (55). A rotating ring (56) is fixedly connected to the outer ring of the breathable disc (55). The upper surface of the rotating ring (56) is rotatably connected with a first limiting ring (57). The first limiting ring (57) penetrates the lower surface of the exchange box (4). A first gear (58) is fixedly connected to the outer surface of the rotating ring (56); The slag collection mechanism (6) includes a stirring mechanism (67). The stirring mechanism (67) includes a second limiting ring (671) fixedly connected to the lower surface of the exchange box (4). The outer surface of the second limiting ring (671) is rotatably connected with a rotating sleeve (672). The lower surface of the rotating sleeve (672) is fixedly connected with a rotating shell (673). A hole is opened on the bottom surface of the inner cavity of the rotating shell (673). The outer surface of the rotating shell (673) is rotatably connected with a first wrapping cover (675). The bottom end of the first wrapping cover (675) is fixedly connected with a first sealing ring (676). A second gear (674) is fixedly connected to the outer surface of the rotating shell (673), and the second gear (674) meshes with the first gear (58).

2. The autothermal roasting device for molybdenum concentrate according to claim 1, characterized in that: The heating mechanism (2) is arranged on the lower surface of the housing (1). The exchange box (4) is fixedly connected to the top end of the connecting frame (3). The air flow exchange mechanism (5) is arranged on the top end of the connecting frame (3) through the exchange box (4). The slag collection mechanism (6) is fixedly connected to the inner cavity of the exchange box (4). The placement mechanism (7) is arranged in the inner cavity of the housing (1). An exhaust valve (9) penetrates the outer surface of the housing (1). A clamping groove is opened on the outer side surface of the housing (1), and a blocking plate (8) is slidably connected to the clamping groove opened on the outer side surface of the housing (1).

3. The autothermal roasting device for molybdenum concentrate according to claim 2, wherein: The heating mechanism (2) includes a roasting box (21), the roasting box (21) is arranged directly below the outer shell (1), a material-penetrating net (22) is fixedly connected to the top of the inner wall of the roasting box (21), an air inlet pipe (23) penetrates through the outer side surface of the roasting box (21), a gas guide pipe (24) penetrates through the outer side surface of the roasting box (21), a fixing frame (25) is fixedly connected to one side of the roasting box (21) far away from the air inlet pipe (23), a high-voltage power supply (26) is fixedly connected to the end of the fixing frame (25), a lead wire (27) is arranged at the output end of the high-voltage power supply (26), the lead wire (27) penetrates through the roasting box (21), and a heating plate (28) is fixedly connected to the end of the lead wire (27), and the heating plate (28) is arranged on the bottom surface of the inner cavity of the roasting box (21).

4. A self-heating roasting device for molybdenum concentrate according to claim 3, characterized in that: A limiting shell (510) is rotatably connected to the lower surface of the rotating ring (56), a support frame (59) is fixedly connected to the outer surface of the limiting shell (510), one end of the support frame (59) far away from the limiting shell (510) is fixedly connected to the outer side surface of the exchange box (4), an air inlet (511) is fixedly connected to the lower surface of the limiting shell (510), and the air inlet (511) is fixedly connected to one end of the gas guide pipe (24) far away from the roasting box (21).

5. A self-heating roasting device for molybdenum concentrate according to claim 4, characterized in that: The slag collection mechanism (6) includes a connection shell (61), the connection shell (61) is fixedly connected to the upper surface of the exchange box (4), a first ventilation hole (62) is formed in the outer side surface of the connection shell (61), a slag collection box (63) is movably connected to the inner cavity of the connection shell (61), a second ventilation hole (65) is formed in the outer side surface of the slag collection box (63), the first ventilation hole (62) is aligned with the second ventilation hole (65), a screening plate (64) is fixedly connected to the bottom of the inner wall of the slag collection box (63), and a handle (66) is fixedly connected to the upper surface of the slag collection box (63).

6. The autothermal roasting device for molybdenum concentrate according to claim 5, wherein: A fixing frame (677) is fixedly connected to the lower surface of the rotating shell (673), the number of the fixing frames (677) is several, and several of the fixing frames (677) are evenly distributed, a stirring plate (678) is fixedly connected to the bottom end of the fixing frame (677), a rotating plate (679) is rotatably connected to the inner cavity of the rotating shell (673), a connecting column (6710) is fixedly connected to the lower surface of the rotating plate (679), a second wrapping cover (6711) is fixedly connected to the bottom end of the connecting column (6710), and a second sealing ring (6712) is fixedly connected to the lower surface of the second wrapping cover (6711).

7. A self-heating roasting device for molybdenum concentrate according to claim 6, characterized in that: The placement mechanism (7) includes an orbital frame (71), the orbital frame (71) penetrates through the outer side surface of the housing (1), a sliding rod (72) is slidably connected to the inner cavity of the orbital frame (71), a first spring (73) is fixedly connected to the upper surface of the sliding rod (72), the top end of the first spring (73) is fixedly connected to the top surface of the inner cavity of the orbital frame (71), a limiting column (74) is fixedly connected to the end of the sliding rod (72), and a first rotating ring (75) is rotatably connected to the outer surface of the limiting column (74).

8. A self-heating roasting device for molybdenum concentrate according to claim 7, characterized in that: A first support rod (78) is fixedly connected to the lower surface of the first rotating ring (75), a first ventilation frame (79) is fixedly connected to the end of the first support rod (78), a first pressing plate (76) is fixedly connected to the outer side surface of the first rotating ring (75), a second spring (77) is fixedly connected to the upper surface of the first pressing plate (76), the top end of the second spring (77) is fixedly connected to the top surface of the inner cavity of the housing (1), a second rotating ring (710) is rotatably connected to the outer surface of the limiting column (74), a second support rod (711) is fixedly connected to the outer surface of the second rotating ring (710), a second ventilation frame (712) is fixedly connected to the end of the second support rod (711), the first ventilation frame (79) and the second ventilation frame (712) are sleeved on the outer surface of the first sealing ring (676), a second pressing plate (713) is fixedly connected to the outer surface of the second rotating ring (710), a third spring (714) is fixedly connected to the upper surface of the second pressing plate (713), and the top end of the third spring (714) is fixedly connected to the top surface of the inner cavity of the housing (1).

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