Molybdenum concentrate self-heating type roasting device

Abstract

The utility model discloses a molybdenum concentrate self-heating type roasting device, and particularly relates to the technical field of molybdenum concentrate production, the molybdenum concentrate self-heating type roasting device mainly comprises a roasting furnace body, a plurality of heat exchange annular grooves are sequentially formed in each heat exchange annular groove from front to back, conveying inclined pipes are welded and communicated to the top ends of the heat exchange annular grooves, and flow dividing pipes are fixedly communicated to the top ends of the conveying inclined pipes; a recycling heat storage mechanism is installed on one side of the flow dividing pipe. The recycling heat storage mechanism comprises a three-way pipe installed on one side of the flow dividing pipe, and a pump machine used for pressurizing the oil body is installed at the bottom end of the three-way pipe. A pump machine is started through the recovery heat storage mechanism, so that the spiral inner pipe sucks oil into the suction pipe, the heated oil continues to circulate into the heat exchange ring grooves along the spiral inner pipe, roasting operation can be achieved through heat generated by self-heating of molybdenum concentrate, heat conduction oil in the heat preservation tank can be heated, and the heat conduction oil can be recycled. And the heat utilization rate is greatly improved in the molybdenum concentrate roasting process.

Description

Technical Field

[0001] The utility model relates to the technical field of molybdenum concentrate production, and more specifically, the utility model relates to a self-heating roasting device for molybdenum concentrate. Background Art

[0002] The main purpose of the self-heating roasting device for molybdenum concentrate is to process molybdenum sulfide concentrate and convert it into industrial molybdenum oxide. Specifically, through a series of technical designs and component configurations, the device solves the problems of overheating during the main reaction period and heat shortage during the late desulfurization process in the molybdenum concentrate roasting process, and realizes self-heating roasting operation.

[0003] During the roasting process of the molybdenum concentrate by the roasting device, although the molybdenum concentrate uses heat to achieve self-heating roasting during the oxidation process, it is difficult to fully collect the heat generated by the molybdenum concentrate to preheat the next furnace body during the roasting process, resulting in low heat utilization rate during the molybdenum concentrate roasting process. Therefore, a self-heating roasting device for molybdenum concentrate is provided. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a self-heating roasting device for molybdenum concentrate.

[0005] To achieve the above object, the utility model provides the following technical solution: A self-heating roasting device for molybdenum concentrate, including a roasting furnace body, a plurality of heat exchange ring grooves are sequentially arranged in the roasting furnace body from front to back, the top ends of the plurality of heat exchange ring grooves are welded and communicated with conveying inclined pipes, the top ends of the conveying inclined pipes are fixedly communicated with a shunt pipe, and a recovery and heat storage mechanism is installed on one side of the shunt pipe; the recovery and heat storage mechanism includes a three-way pipe installed on one side of the shunt pipe, and a pump for pressurizing the oil body is installed at the bottom end of the three-way pipe. An inhalation pipe and a spiral inner pipe are sequentially arranged below the pump from top to bottom;

[0006] The bottom ends of the plurality of conveying inclined pipes are welded and communicated with a diversion inclined pipe, a collecting pipe is welded and communicated at one end of the diversion inclined pipe, a three-way collecting pipe for collecting the oil body is welded and communicated at one end of the collecting pipe, an electric valve is threadedly communicated at the top end of the three-way collecting pipe, and a heat preservation tank for heat preservation of the oil body is installed on the outer wall of the electric valve and close to its bottom end position; a distributed heat conduction component is installed inside the heat preservation tank, including heat conduction sheets for heat equalization inside the heat preservation tank, adjacent two conveying inclined pipes are arranged crosswise, and adjacent two diversion inclined pipes are arranged crosswise; and the conveying inclined pipes, the shunt pipe and the diversion inclined pipe are all made of copper material, the three-way pipe is welded and communicated between the output end of the pump and the two shunt pipes, and the top ends of the two shunt pipes are at the same horizontal line position, the spiral inner pipe and the input end of the pump are both fixedly communicated with the inhalation pipe, and the spiral inner pipe and the inhalation pipe are both made of copper material.

[0007] Preferably, the bottom end of the electric valve extends into the heat-insulating tank body and is welded with a connected connecting ring pipe. A spiral outer pipe fixedly connected to the outer wall of the spiral inner pipe is communicated at the bottom end of the connecting ring pipe. A cover door is hingedly installed at one end of the roasting furnace body, and the cover door is used to heat-insulate the roasting furnace body.

[0008] When in use according to the above technical solution, start the pump to suck the oil body into the suction pipe through the spiral inner pipe. The oil body flows into the three-way pipe along the pump through the suction pipe, and is divided into six conveying inclined pipes through the two shunt pipes. The conveying inclined pipes can contact the self-generated heat generated by the inner wall of the roasting furnace body along the heat exchange ring groove. The heat-exchanged oil body is conveyed into the collecting pipe along the diversion inclined pipe. By opening the electric valve, the oil body enters the connecting ring pipe and is then divided into the spiral outer pipe. The heated oil body continues to circulate into multiple heat exchange ring grooves along the spiral inner pipe. In this way, the roasting operation can be realized by using the heat generated by the self-heating of molybdenum concentrate, and the heat-conducting oil in the heat-insulating tank body can be heated.

[0009] Preferably, the distributed heat-conducting assembly includes a plurality of heat-conducting sheets fixedly installed on the inner wall of the heat-insulating tank body; a plurality of welded heat-conducting side sheets are arranged in sequence from top to bottom on one side of each heat-conducting sheet. Heat-conducting copper sheets for heat conduction are arranged on the outer wall of the heat-conducting sheet and on the side where the heat-conducting side sheets are connected. Support columns are welded in the gaps surrounded by one sides of the plurality of heat-conducting copper sheets. A support bottom ring for supporting the heat-conducting sheet is welded at the bottom end of the support column, and the heat exchange efficiency is improved through a three-dimensional structure.

[0010] When in use according to the above technical solution, the support bottom ring provides a vertical support force for the plurality of support columns, the support columns provide a stable support force for the plurality of heat-conducting copper sheets, and a large amount of heat is absorbed by the plurality of heat-conducting copper sheets, the heat-conducting sheets and the plurality of heat-conducting side sheets. In this way, the heat can be quickly and evenly distributed inside the heat-insulating tank body, making the heating more uniform and avoiding local overheating.

[0011] The technical effects and advantages of the present utility model:

[0012] 1. Through the heat recovery and storage mechanism of the present utility model, start the pump to suck the oil body into the suction pipe through the spiral inner pipe. The oil body flows into the three-way pipe along the pump through the suction pipe. The three-way pipe conveys the heat-conducting oil body into the two shunt pipes. The conveying inclined pipes can contact the self-generated heat generated by the inner wall of the roasting furnace body along the heat exchange ring groove. After the oil body enters the connecting ring pipe, it is divided into the spiral outer pipe. The heated oil body continues to circulate into multiple heat exchange ring grooves along the spiral inner pipe. In this way, the roasting operation can be realized by using the heat generated by the self-heating of molybdenum concentrate, and the heat-conducting oil in the heat-insulating tank body can be heated, and the heat utilization rate is greatly improved during the molybdenum concentrate roasting process;

[0013] 2. When the utility model adopts a distributed heat conduction component to enable the oil body inside the heat preservation tank body to conduct heat in a cycle, the support bottom ring provides a vertical supporting force for a plurality of support columns, and a plurality of heat conduction copper sheets, heat conduction sheets and a plurality of heat conduction side sheets absorb a large amount of heat, so that the heat can be quickly and evenly distributed inside the heat preservation tank body, making the heating more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic perspective view of the main view of a self-heating roasting device for molybdenum concentrate of the present utility model.

[0015] Figure 2 It is a schematic cross-sectional view of a self-heating roasting device for molybdenum concentrate of the present utility model.

[0016] Figure 3 It is a schematic partial structure view of the truncated roasting furnace body of the present utility model.

[0017] Figure 4 It is a schematic partial structure view of the split of the electric valve and the heat preservation tank body of the present utility model.

[0018] Figure 5 It is a schematic plan view of the main view of a self-heating roasting device for molybdenum concentrate of the present utility model.

[0019] Figure 6 It is a schematic perspective view of the main view of the distributed heat conduction component of the present utility model.

[0020] Reference numerals are: 1. Roasting furnace body; 2. Heat exchange ring groove; 3. Conveying inclined pipe; 4. Shunt pipe; 5. Three-way pipe; 6. Pump; 7. Suction pipe; 8. Spiral inner pipe; 9. Guide inclined pipe; 10. Collection pipe; 11. Three-way collection pipe; 12. Electric valve; 13. Connecting ring pipe; 14. Spiral outer pipe; 15. Heat preservation tank body; 16. Cover door; 17. Heat conduction sheet; 18. Heat conduction side sheet; 19. Heat conduction copper sheet; 20. Support column; 21. Support bottom ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] As shown in the attached Figure 1-6A self-heating roasting device for molybdenum concentrate as shown. The self-heating roasting device for molybdenum concentrate is provided with a heat recovery and storage mechanism and a distributed heat conduction component. The settings of each mechanism and component can not only utilize the heat generated by the self-heating of molybdenum concentrate to achieve the roasting operation, but also heat the heat-conducting oil inside the heat preservation tank body 15, greatly improving the heat utilization rate during the molybdenum concentrate roasting process. The specific structural settings of each mechanism and component are as follows:

[0023] In the first embodiment of the present invention, as shown in the appendix Figure 1-5 The heat recovery and storage mechanism includes a three-way pipe 5 installed on one side of the shunt pipe 4, and a pump 6 for pressurizing the oil body is installed at the bottom end of the three-way pipe 5. An inhalation pipe 7 and a spiral inner pipe 8 are successively arranged from top to bottom below the pump 6; the bottom ends of a plurality of conveying inclined pipes 3 are all welded and communicated with a diversion inclined pipe 9. A collecting pipe 10 is installed at one end of the diversion inclined pipe 9 by welding and communication. One end of the collecting pipe 10 is welded and communicated with a three-way collecting pipe 11 for collecting the oil body. The top end of the three-way collecting pipe 11 is threadedly communicated with an electric valve 12. A heat preservation tank body 15 for heat-preserving the oil body is installed on the outer wall of the electric valve 12 and near its bottom end position; a distributed heat conduction component is installed inside the heat preservation tank body 15; one end of the roasting furnace body 1 is hingedly installed with a cover door 16, and the cover door 16 is used to keep the roasting furnace body 1 warm, so as to open the cover door 16 to put the preheated molybdenum concentrate into the roasting furnace body 1, and then close the cover door 16 to perform the heat preservation operation on the roasting furnace body 1. Molybdenum sulfide will react with oxygen in the air to generate a certain amount of heat.

[0024] When the self-heating roasting device for molybdenum concentrate in this embodiment is in use, first, the operator opens the cover door 16 to put the preheated molybdenum concentrate into the roasting furnace body 1. Molybdenum sulfide in the molybdenum concentrate will react with oxygen in the air to generate a certain amount of heat. At the same time, a large amount of oil body is filled inside the heat preservation tank body 15. By starting the pump 6, the spiral inner pipe 8 sucks the oil body into the inhalation pipe 7. The oil body flows through the inhalation pipe 7 and is poured into the three-way pipe 5 along the pump 6. The three-way pipe 5 transports the heat-conducting oil body into the two shunt pipes 4, and is shunted into the six conveying inclined pipes 3 through the two shunt pipes 4. The conveying inclined pipes 3 can contact the self-generated heat generated by the inner wall of the roasting furnace body 1 along the heat exchange ring groove 2. The heat-exchanged oil body is transported into the collecting pipe 10 along the diversion inclined pipe 9;

[0025] In the embodiment of the present invention, as shown in the appendix Figure 1-4 The bottom end of the electric valve 12 extends into the heat preservation tank body 15 and is welded with a connected ring pipe 13. A spiral outer pipe 14 fixedly connected to the outer wall of the spiral inner pipe 8 is communicated at the bottom end of the connected ring pipe 13, so that by opening the electric valve 12, the oil body enters the connected ring pipe 13 and is shunted into the spiral outer pipe 14, enabling the oil body to circulate and achieve shunt heat conduction.

[0026] The oil body is poured into the interior of the electric valve 12 through the collecting pipe 10 from the three-way collecting pipe 11. By opening the electric valve 12, the oil body enters the interior of the connecting ring pipe 13 and then is divided into the interior of the spiral outer pipe 14. The spiral outer pipe 14 spirally enters the interior of the heat preservation tank body 15, quickly heating the oil body inside the heat preservation tank body 15. The heated oil body continues to circulate along the spiral inner pipe 8 to the plurality of heat exchange ring grooves 2. In this way, the roasting operation can be realized by using the heat generated by the self-heating of molybdenum concentrate, and the heat-conducting oil inside the heat preservation tank body 15 can be heated. When another batch of molybdenum concentrate needs to be roasted after the roasting furnace body 1 has completed roasting, the oil body with high heat inside the heat preservation tank body 15 can continue to be transported to the plurality of heat exchange ring grooves 2 through the pump 6, quickly preheating the outer wall of the roasting furnace body 1, being able to fully preserve the excess heat generated by roasting, using the excess heat to realize the roasting preheating operation, greatly saving energy, realizing the self-heating roasting operation and solving the problems of overheating during the main reaction period and heat shortage during the later desulfurization period in the molybdenum concentrate roasting process through internal circulation, making the temperature constant and avoiding incomplete reactions caused by unstable reaction rates.

[0027] In the second embodiment of the present invention, to solve the problem that the heat distribution of the oil liquid is uneven during the working process of the mechanism described in the first embodiment of the present invention, as shown in the attached Figure 4-6 figure, the distributed heat-conducting component includes a plurality of heat-conducting sheets 17 fixedly installed on the inner wall of the heat preservation tank body 15; on one side of each heat-conducting sheet 17, a plurality of welded heat-conducting side sheets 18 are arranged in sequence from top to bottom. On the outer wall of the heat-conducting sheet 17 and on the side where the heat-conducting side sheets 18 are connected, a plurality of heat-conducting copper sheets 19 for heat conduction are provided. In the gap surrounded by one side of the plurality of heat-conducting copper sheets 19, a support column 20 is welded, and at the bottom end of the support column 20, a support bottom ring 21 for supporting the heat-conducting sheet 17 is welded.

[0028] When in use in this embodiment, when the oil body inside the heat preservation tank body 15 can conduct heat in a circulating manner, a vacuum interlayer is provided on the outer wall of the heat preservation tank body 15 to reduce heat loss. This interlayer vacuum heat insulation technology is a publicly known existing technology and will not be described in detail. Then, the support bottom ring 21 provides a vertical support force for the plurality of support columns 20, and the support columns 20 provide a stable support force for the plurality of heat-conducting copper sheets 19. Moreover, the plurality of heat-conducting copper sheets 19, the heat-conducting sheets 17, and the plurality of heat-conducting side sheets 18 absorb a large amount of heat and conduct distributed heat absorption. In this way, the heat can be quickly and evenly distributed inside the heat preservation tank body 15, making the heating more uniform and avoiding local overheating, which leads to accelerated heat dissipation due to too high local temperature.

[0029] Contents not described in detail in the specification belong to the well-known prior art in the art, and the model parameters of each electrical appliance are not specifically limited. Conventional equipment can be used. In this technical solution, since the electrical control components not mentioned belong to the prior art, they are not shown in the figure and will not be described here either.

[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A self-heating roasting device for molybdenum concentrate, comprising a roasting furnace body (1), wherein a plurality of heat exchange ring grooves (2) are sequentially arranged inside the roasting furnace body (1) from front to back, the tops of the plurality of heat exchange ring grooves (2) are all welded and communicated with conveying inclined pipes (3), and the tops of the conveying inclined pipes (3) are fixedly communicated with a flow dividing pipe (4), and the characteristics are as follows: A recovery and heat storage mechanism is installed on one side of the shunt pipe (4); The recovery and heat storage mechanism includes a three-way pipe (5) installed on one side of the shunt pipe (4), and a pump (6) for pressurizing the oil body is installed at the bottom end of the three-way pipe (5). An inhalation pipe (7) and a spiral inner pipe (8) are sequentially arranged from top to bottom below the pump (6); The bottom ends of a plurality of the conveying inclined pipes (3) are all welded and communicated with a guiding inclined pipe (9). A collecting pipe (10) is welded and communicated at one end of the guiding inclined pipe (9). A three-way collecting pipe (11) for collecting the oil body is welded and communicated at one end of the collecting pipe (10). An electric valve (12) is threadedly communicated at the top end of the three-way collecting pipe (11). A heat preservation tank body (15) for heat-preserving the oil body is installed on the outer wall of the electric valve (12) and near the bottom end thereof; A distributed heat conduction assembly including heat conduction fins (17) is installed inside the heat preservation tank body (15) for making the temperature inside the heat preservation tank body (15) uniform; 2. The autothermal roasting device for molybdenum concentrate according to claim 1, characterized in that: Adjacent two conveying inclined pipes (3) are arranged in a crossed manner, and adjacent two guiding inclined pipes (9) are arranged in a crossed manner; And the conveying inclined pipes (3), the shunt pipe (4) and the guiding inclined pipes (9) are all made of copper; 3. The autothermal roasting device for molybdenum concentrate according to claim 1, wherein: The three-way pipe (5) is welded and communicated between the output end of the pump (6) and the two shunt pipes (4), and the top ends of the two shunt pipes (4) are at the same horizontal line position; 4. A self-heating roasting device for molybdenum concentrate according to claim 1, characterized in that: The spiral inner pipe (8) and the input end of the pump (6) are both fixedly communicated with the inhalation pipe (7), and the spiral inner pipe (8) and the inhalation pipe (7) are both made of copper; 5. A self-heating roasting device for molybdenum concentrate according to claim 1, characterized in that: The bottom end of the electric valve (12) extends into the heat preservation tank body (15) and is welded with a connected ring pipe (13). A spiral outer pipe (14) fixedly connected with the outer wall of the spiral inner pipe (8) is communicated at the bottom end of the ring pipe (13); 6. The self-heating roasting device for molybdenum concentrate according to claim 1, characterized in that: A cover door (16) is hingedly installed at one end of the roasting furnace body (1), and the cover door (16) is used for heat-preserving the roasting furnace body (1); 7. A self-heating roasting device for molybdenum concentrate according to claim 1, characterized in that: The distributed heat conduction assembly includes a plurality of heat conduction fins (17) fixedly installed on the inner wall of the heat preservation tank body (15); On one side of each heat conduction fin (17), a plurality of welded heat conduction side fins (18) are sequentially arranged from top to bottom. A plurality of heat conduction copper sheets (19) for heat conduction are arranged on the outer wall of the heat conduction fin (17) and on the side where the heat conduction side fins (18) are connected. A support column (20) is welded in the gap surrounded by one side of the plurality of heat conduction copper sheets (19). A support bottom ring (21) for supporting the heat conduction fin (17) is welded at the bottom end of the support column (20).

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