Molybdenum powder secondary reduction furnace

Abstract

The utility model belongs to the technical field of molybdenum powder reduction furnaces, and particularly relates to a molybdenum powder secondary reduction furnace which comprises a reaction furnace body, the reaction furnace body comprises two machine frames and a furnace barrel, the two machine frames are symmetrically arranged, the furnace barrel is horizontally fixed on the two machine frames in a penetrating mode, and a plurality of air inlet pipes are transversely, evenly and vertically fixed on the upper portion of the outer circumferential face of the furnace barrel in a penetrating mode. And a heating piece is arranged outside the furnace barrel in a sleeving mode and comprises a heating oil shell barrel, the heating oil shell barrel is arranged outside the furnace barrel in a sleeving mode, and the two ends of the heating oil shell barrel are fixed to the outer wall of the furnace barrel. Hydrogen is then guided into the furnace barrel through the multiple pieces of hydrogen penetrating through the heating oil shell barrel and the cooling shell barrel, the hydrogen is evenly guided into the furnace barrel, and molybdenum powder is subjected to secondary reduction, so that it is guaranteed that the hydrogen content at the two ends is the same when the molybdenum powder in the furnace barrel is reduced, the reduction effect of the molybdenum powder in the furnace tube is the same, and the reduction consistency of the molybdenum powder in the furnace tube is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of molybdenum powder reduction furnaces, and in particular relates to a molybdenum powder secondary reduction furnace. Background Art

[0002] Molybdenum powder is mainly used in the fields of metallurgical industry, aerospace and military industry. Molybdenum trioxide is first screened, and then it is reduced in a primary reduction furnace under a hydrogen atmosphere to obtain molybdenum dioxide. Then it is reduced in a secondary reduction furnace under a hydrogen atmosphere to obtain crude molybdenum powder. Finally, the finished molybdenum powder is obtained by screening and grinding. The most important production equipment is the primary reduction furnace and the secondary reduction furnace.

[0003] The existing announcement number is CN218362082U, and the name is a continuous molybdenum powder reduction furnace, including a supporting platform, a mounting frame is installed on the supporting platform, and an insulation furnace is installed on the mounting frame. An inclined furnace tube is arranged in the insulation furnace, and a heater arranged around the furnace tube is arranged on the periphery of the furnace tube, and a discharge pipe is arranged at the lowest end of the furnace tube, and a feed pipe is arranged at the highest end of the furnace tube, and an automatic feeder is arranged on the feed pipe, and an air outlet pipe is arranged at the highest end of the furnace tube, and a reducing gas inlet pipe is also arranged at the bottom of the furnace tube, and a discharge hopper is arranged at the discharge pipe. The entire production does not require repeated processes of placing products, heating, keeping warm, cooling, and taking products, which reduces energy consumption, realizes continuous and semi-automatic production, and greatly improves production efficiency. At the same time, semi-automatic production also greatly reduces labor costs.

[0004] However, when reducing the molybdenum powder as described above, hydrogen is introduced through a reducing gas inlet pipe at one end of the furnace tube, and the hydrogen flows at the other end of the furnace tube. During the flow, the hydrogen contacts the molybdenum powder and is reduced, resulting in a gradual decrease in the content of hydrogen at the other end of the furnace tube. When the molybdenum powder in the furnace tube is reduced, the hydrogen contents at both ends are different, resulting in different reduction effects of the molybdenum powder in the furnace tube, affecting the consistency of the reduction of the molybdenum powder in the furnace tube. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a molybdenum powder secondary reduction furnace, which can achieve that hydrogen is then introduced into the furnace barrel through multiple pipes that penetrate the heating oil shell cylinder and the cooling shell cylinder, and the hydrogen is evenly introduced into the furnace barrel to perform secondary reduction on the molybdenum powder, thereby ensuring that the hydrogen content at both ends of the furnace barrel is the same when the molybdenum powder in the furnace barrel is reduced, resulting in the same reduction effect of the molybdenum powder in the furnace tube, thereby ensuring the consistency of the molybdenum powder reduction in the furnace tube.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A molybdenum powder secondary reduction furnace comprises a reaction furnace body, which comprises a frame and a furnace barrel. Two frames are symmetrically arranged, and the furnace barrels are horizontally penetrated and fixed on the two frames. A plurality of air inlet pipes are horizontally and vertically penetrated and fixed on the upper part of the outer circumferential surface of the furnace barrel. A heating element is sleeved on the outside of the furnace barrel, and the two ends of the heating oil shell barrel are fixed on the outer wall of the furnace barrel. A cooling shell barrel is sleeved on the outside of the heating oil shell barrel, and the two ends of the cooling shell barrel are fixed on the outer wall of the heating oil shell barrel. An air guide is sleeved on the outside of the cooling shell barrel, and the two ends of the cooling shell barrel are fixed on the outer wall of the cooling shell barrel. One end of the air guide barrel is connected and fixed with an air guide pipe, and one end of the air inlet pipe penetrates the heating oil shell barrel and the cooling shell barrel and extends to the inside of the air guide barrel.

[0008] Furthermore, one end of the furnace drum is open, and the open end of the furnace drum is filled with a sealing cover.

[0009] Furthermore, a charging hopper is vertically connected and fixed to the upper part of the outer circumferential surface of the furnace drum away from the opening end, and a motor is horizontally fixed to the other end surface of the furnace drum.

[0010] Furthermore, a conveying screw is horizontally arranged inside the furnace drum, and one end of the conveying screw is rotatably connected to the end surface of the furnace drum, and the end of the conveying screw is fixedly connected to the output end of the motor.

[0011] Furthermore, the interior of the heating oil shell is filled with heat-conducting oil, and a plurality of heating rods are horizontally fixed inside the heating oil shell.

[0012] Furthermore, both ends of the cooling shell are horizontally connected and fixed with water pipes, and valves are connected and fixed on the water pipes.

[0013] Furthermore, a plurality of through holes are evenly and continuously formed on the outer circumferential surfaces of the heating oil shell cylinder and the cooling shell cylinder, and the plurality of through holes on the heating oil shell cylinder and the cooling shell cylinder are connected with a plurality of air intake pipes.

[0014] Furthermore, a heat-insulating sleeve is fixed on the outer wall of the air guide cylinder.

[0015] Compared with the prior art, the utility model has the following beneficial effects: during use, the open end of the furnace barrel is sealed, molybdenum powder that needs to be reduced is added into the furnace barrel, and then the molybdenum powder is spread flat in the furnace barrel, and then the heating oil shell tube is started to heat the furnace barrel, and when hydrogen needs to be introduced into the furnace barrel during the treatment, the gas guide pipe on the gas guide tube is connected to the hydrogen gas supply pipe, and hydrogen enters the gas guide tube, and the hydrogen fills the gas guide tube. The hydrogen is then introduced into the furnace barrel through multiple pipes that penetrate the heating oil shell tube and the cooling shell tube, and the hydrogen is evenly introduced into the furnace barrel to perform secondary reduction on the molybdenum powder, thereby ensuring that the hydrogen content at both ends of the furnace barrel is the same when the molybdenum powder in the furnace barrel is reduced, resulting in the same reduction effect of the molybdenum powder in the furnace tube, thereby ensuring the consistency of the reduction of the molybdenum powder in the furnace tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall exploded structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the reactor body in the decomposed state in the embodiment of the utility model;

[0019] Figure 4 It is a schematic structural diagram of the air guide member in the embodiment of the utility model in a disassembled state;

[0020] Figure 5 It is a schematic structural diagram of the heating element in the embodiment of the present utility model in a decomposed state.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Reactor body; 11. Frame; 12. Furnace drum; 13. Feeding hopper; 14. Transport screw; 15. Motor; 16. Air inlet pipe; 17. Cover; 2. Heating element; 21. Heating oil shell cylinder; 22. Heating rod; 23. Cooling shell cylinder; 24. Water guide pipe; 241. Valve; 25. Through hole; 3. Air guide element; 31. Air guide cylinder; 32. Air guide pipe; 33. Insulation sleeve. DETAILED DESCRIPTION

[0023] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0024] like Figure 1-5As shown, a molybdenum powder secondary reduction furnace comprises a reaction furnace body 1, the reaction furnace body 1 comprises a frame 11 and a furnace barrel 12, two frames 11 are symmetrically arranged, and the furnace barrels 12 are horizontally penetrated and fixed on the two frames 11, and a plurality of air inlet pipes 16 are horizontally and vertically penetrated and fixed on the upper part of the outer circumference of the furnace barrel 12, and a heating element 2 is sleeved on the outside of the furnace barrel 12, and the heating element 2 comprises a heating oil shell 21, which is sleeved on the outside of the furnace barrel 12, and the two ends of the heating oil shell 21 are fixed on the outer wall of the furnace barrel 12. The heating oil shell cylinder 21 is externally sleeved with a cooling shell cylinder 23, and both ends of the cooling shell cylinder 23 are fixed on the outer wall of the heating oil shell cylinder 21, and the cooling shell cylinder 23 is externally sleeved with an air guide member 3, the air guide member 3 includes an air guide cylinder 31, the air guide cylinder 31 is sleeved on the outside of the cooling shell cylinder 23, and both ends of the air guide cylinder 31 are fixed on the outer wall of the cooling shell cylinder 23, and one end of the air guide cylinder 31 is connected and fixed with an air guide pipe 32, and one end of the air intake pipe 16 passes through the heating oil shell cylinder 21 and the cooling shell cylinder 23 and extends to the interior of the air guide cylinder 31.

[0025] According to the above structure, during use, the open end of the furnace barrel 12 is sealed, the molybdenum powder that needs to be reduced is added into the furnace barrel 12, and then the molybdenum powder is spread evenly in the furnace barrel 12, and then the heating oil shell cylinder 21 is started to heat the furnace barrel 12. When hydrogen needs to be introduced into the furnace barrel 12 during the treatment, the gas guide pipe 32 on the gas guide cylinder 31 is connected to the hydrogen gas supply pipe, and hydrogen enters the gas guide cylinder 31. The hydrogen fills the gas guide cylinder 31, and then the hydrogen is introduced into the furnace barrel 12 through multiple wires that penetrate the heating oil shell cylinder 21 and the cooling shell cylinder 23. The hydrogen is evenly introduced into the furnace barrel 12 to perform secondary reduction on the molybdenum powder, thereby ensuring that the hydrogen content at both ends of the furnace barrel 12 is the same when the molybdenum powder in the furnace barrel 12 is reduced, resulting in the same reduction effect of the molybdenum powder in the furnace tube, thereby ensuring the consistency of the reduction of the molybdenum powder in the furnace tube.

[0026] like Figure 3 As shown, one end of the furnace drum 12 is open, and the open end of the furnace drum 12 is filled with a cover 17 .

[0027] According to the above structure, the open end of the furnace drum 12 is used to discharge the molybdenum powder, and the open end of the furnace drum 12 is blocked by the cover 17 for guiding gas to reduce the molybdenum powder.

[0028] like Figure 3 As shown, a charging hopper 13 is vertically connected and fixed to the upper part of the outer circumferential surface of the furnace drum 12 away from the open end, and a motor 15 is horizontally fixed to the other end surface of the furnace drum 12.

[0029] According to the above structure, the hopper 13 on the furnace drum 12 introduces molybdenum powder for reduction treatment, and the motor 15 on the furnace drum 12 spreads the molybdenum powder in the furnace drum 12 .

[0030] like Figure 3As shown, a conveying screw 14 is horizontally arranged inside the furnace drum 12 , and one end of the conveying screw 14 is rotatably connected to the end surface of the furnace drum 12 , and the end of the conveying screw 14 is fixedly connected to the output end of the motor 15 .

[0031] According to the above structure, the starting motor 15 drives the transport screw 14 to rotate, and the screw drives the molybdenum powder to be spread in the furnace drum 12 for reduction. Then, after the reduction is completed, the cover 17 on the open end is opened to discharge the reduced molybdenum powder.

[0032] like Figure 5 As shown, the interior of the heating oil shell cylinder 21 is filled with heat-conducting oil, and a plurality of heating rods 22 are horizontally fixed inside the heating oil shell cylinder 21 .

[0033] According to the above structure, the heating oil shell 21 is filled with heat transfer oil, and the power ends of the multiple heating rods 22 inside the heating oil shell are connected in series to the external power supply line. When power is supplied, the multiple heating rods 22 heat the heat transfer oil, and the heat transfer oil contacts the wall of the furnace tube 12 to heat the molybdenum powder spread inside.

[0034] like Figure 5 As shown, both ends of the cooling shell 23 are horizontally connected and fixed with water pipes 24 , and valves 241 are connected and fixed on the water pipes 24 .

[0035] According to the above structure, when the heated molybdenum powder is cooled, the valve 241 on the water pipe 24 is opened to supply water to the cooling shell 23, the water contacts the wall of the heating oil shell 21, and cools the internal heat transfer oil. The cooled heat transfer oil contacts the wall of the furnace tube 12, and cools the molybdenum powder spread inside.

[0036] like Figure 5 As shown, a plurality of through holes 25 are evenly opened on the outer circumferential surfaces of the heating oil shell cylinder 21 and the cooling shell cylinder 23 , and the plurality of through holes 25 on the heating oil shell cylinder 21 and the cooling shell cylinder 23 are connected with the plurality of intake pipes 16 through and plugged.

[0037] According to the above structure, the plurality of through holes 25 on the heating oil shell 21 and the cooling shell 23 are connected with the plurality of air inlet pipes 16 for penetrating and inserting the hydrogen through the heating oil shell 21 and the cooling shell 23 .

[0038] like Figure 4 As shown, a heat-insulating sleeve 33 is fixed on the outer wall of the air guide cylinder 31 .

[0039] According to the above structure, the provision of the heat-insulating sleeve 33 facilitates the subsequent prevention of heat loss through the air guide tube 31 when the heating element 2 is heated.

[0040] The working principle of the utility model is as follows: during use, the open end of the furnace barrel 12 is sealed, molybdenum powder that needs to be reduced is added into the furnace barrel 12, and then the molybdenum powder is spread evenly in the furnace barrel 12, and then the heating oil shell cylinder 21 is started to heat the furnace barrel 12. When hydrogen needs to be introduced into the furnace barrel 12 during the treatment, the gas guide pipe 32 on the gas guide cylinder 31 is connected with the hydrogen gas supply pipe, and hydrogen enters the gas guide cylinder 31, and the hydrogen fills the gas guide cylinder 31. The hydrogen is then introduced into the furnace barrel 12 through multiple pipes that penetrate the heating oil shell cylinder 21 and the cooling shell cylinder 23, and the hydrogen is evenly introduced into the furnace barrel 12.

[0041] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A molybdenum powder secondary reduction furnace, characterized in that: The invention comprises a reactor body (1), wherein the reactor body (1) comprises a frame (11) and a furnace barrel (12), wherein two frames (11) are symmetrically arranged, and the furnace barrels (12) are horizontally penetrated and fixed on the two frames (11), and a plurality of air inlet pipes (16) are vertically penetrated and fixed on the upper part of the outer circumferential surface of the furnace barrel (12) in a uniform manner, and a heating element (2) is sleeved on the outside of the furnace barrel (12), and the heating element (2) comprises a heating oil shell cylinder (21), wherein the heating oil shell cylinder (21) is sleeved on the outside of the furnace barrel (12), and the two ends of the heating oil shell cylinder (21) are fixed on the outer wall of the furnace barrel (12), and the heating oil shell cylinder (21) is The outer portion of the cylinder (21) is provided with a cooling shell (23), and both ends of the cooling shell (23) are fixed to the outer wall of the heating oil shell (21); the outer portion of the cooling shell (23) is provided with an air guide member (3), and the air guide member (3) comprises an air guide cylinder (31); the air guide cylinder (31) is provided on the outer portion of the cooling shell (23), and both ends of the air guide cylinder (31) are fixed to the outer wall of the cooling shell (23); one end of the air guide cylinder (31) is connected and fixed with an air guide pipe (32); one end of the air intake pipe (16) passes through the heating oil shell (21) and the cooling shell (23) and extends to the interior of the air guide cylinder (31).

2. A molybdenum powder secondary reduction furnace according to claim 1, characterized in that: One end of the furnace drum (12) is open, and the open end of the furnace drum (12) is filled with a sealing cover (17).

3. A molybdenum powder secondary reduction furnace according to claim 2, characterized in that: A charging hopper (13) is vertically connected and fixed to the upper portion of the outer circumferential surface of the furnace drum (12) away from the opening end, and a motor (15) is horizontally fixed to the other end surface of the furnace drum (12).

4. A molybdenum powder secondary reduction furnace according to claim 3, characterized in that: A conveying screw (14) is horizontally arranged inside the furnace barrel (12), and one end of the conveying screw (14) is rotatably connected to the end surface of the furnace barrel (12), and the end of the conveying screw (14) is fixedly connected to the output end of the motor (15).

5. The molybdenum powder secondary reduction furnace according to claim 1, characterized in that: The interior of the heating oil shell cylinder (21) is filled with heat-conducting oil, and a plurality of heating rods (22) are horizontally fixed inside the heating oil shell cylinder (21).

6. The molybdenum powder secondary reduction furnace according to claim 1, characterized in that: Both ends of the cooling shell (23) are horizontally connected and fixed with a water pipe (24), and a valve (241) is connected and fixed on the water pipe (24).

7. The molybdenum powder secondary reduction furnace according to claim 1, characterized in that: A plurality of through holes (25) are evenly and uniformly provided on the outer circumferential surfaces of the heating oil shell cylinder (21) and the cooling shell cylinder (23), and the plurality of through holes (25) on the heating oil shell cylinder (21) and the cooling shell cylinder (23) are connected and inserted into the plurality of air intake pipes (16).

8. The molybdenum powder secondary reduction furnace according to claim 1, characterized in that: A heat-insulating sleeve (33) is fixed on the outer wall of the air guide cylinder (31).

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