Inclined runner stirring head for producing low-nickel matte
By designing an inclined runner and rounded corner structure in the mixing head, the problems of nickel molten backflow and runner blockage are solved, and the automatic outflow and efficient mixing of nickel molten are achieved, reducing production costs and operation risks.
Patent Information
- Application Number
- CN202420595229.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The stirring heads used to produce low nickel sulfonium in the existing RKEF process have problems such as nickel molten backflow and runner blockage, which increases operating risks and costs.
A tilted runner stirring head is designed, adopting a cross-type blade and an inclined runner structure. The angle between the inclined runner and the horizontal plane is 5°-20°, and the other end of the inclined runner is lower than the lowest end of the feed channel. Promote the automatic outflow of nickel molten iron, reduce the risk of runner blockage, and improve stirring efficiency and reaction rate through rounded corner design.
Through the inclined runner structure, the automatic flow of nickel molten iron is realized, which reduces the potential for runner blockage, improves safety and stirring efficiency, and reduces power consumption and production costs.
Smart Images
Figure CN222211306U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of nickel-iron smelting, and more specifically, relates to an inclined flow channel stirring head for producing low-nickel matte. Background Art
[0002] The rotary kiln drying pre-reduction-electric furnace smelting process (RKEF) is the most widely used pyrometallurgical process for laterite nickel ore in the world. At present, there are more and more technologies that use the nickel iron water of the RKEF process to produce low-nickel matte. For example, the patent with the announcement number CN 219637303U discloses a device for pyrometallurgical smelting nickel iron from laterite nickel ore to further produce low-nickel ferrium. It discloses that the nickel iron water in the RKEF process nickel iron electric furnace is introduced into the iron ladle outside the electric furnace, and liquid sulfur is added to the nickel iron water in the iron ladle by stirring and adding sulfur, so as to strengthen the rapid and sufficient reaction between the nickel iron water and the sulfur, thereby reducing the cost of further producing low-nickel matte. However, the stirring head used in the device is as follows: Figure 1 As shown, the feed pipe of the mixing head includes a vertical pipe and four horizontal pipes. The four horizontal pipes are arranged in a cross shape and overlap with the cross-shaped paddles. In the actual mixing and sulfur adding process, there is a problem of nickel-iron water backflow in the horizontal pipe; secondly, in the process of raising the mixing device after mixing, the nickel-iron water in the horizontal pipe is not easy to flow out. If the remaining nickel-iron water is not manually processed, it is easy to block the flow channel of the horizontal pipe, which makes the actual operation process There are safety risks; in other words, the flow channel needs to be dredged frequently, which increases costs. Utility Model Content
[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the embodiments of the present application is to provide an inclined flow channel stirring head for producing low-nickel matte.
[0004] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide an inclined flow channel stirring head for producing low-nickel matte, including: a rod body and a blade, the blade is a cross-shaped blade, a feed channel is provided at the center of the rod body, a cooling channel for cooling the feed channel is provided in the rod body, and a plurality of inclined flow channels are provided in the blade, one end of which is connected to the feed channel and the other end extends to the side of the blade, and the other end of the inclined flow channel is lower than the lowest end of the feed channel.
[0005] In one embodiment, the angle between the inclined flow channel and the horizontal plane is 5°-20°.
[0006] In one embodiment, the angle between the inclined flow channel and the horizontal plane is 10°-20°.
[0007] In one embodiment, the horizontal deflection angle of the inclined flow channel relative to the blade symmetry line is 20°-31°.
[0008] In one embodiment, the horizontal deflection angle of the inclined flow channel relative to the blade symmetry line is 22°-26°.
[0009] In one embodiment, the other end port of the inclined flow channel is located on the back flow surface of the blade.
[0010] In one embodiment, the intersection between the end surface of the blade and the flow-impacting surface is rounded, and the intersection between two adjacent blades is rounded.
[0011] In one embodiment, the rod body includes a thick-walled tube, the outer side of the thick-walled tube is provided with an anchor hook and a refractory material, the blade includes a high-temperature resistant steel plate arranged in a cross shape, the outer side of the high-temperature resistant steel plate is provided with an anchor hook and a refractory material, an air barrier tube and a material conveying pipe are provided in the thick-walled tube, a sealing plate is provided at the bottom end of the thick-walled tube, the air barrier tube is coaxially arranged with the material conveying pipe, the bottom end of the air barrier tube is spaced apart from the sealing plate, the bottom end of the material conveying pipe passes through the center of the sealing plate and is connected to four inclined tubes, the material conveying pipe forms the material conveying channel, and the gap between the material conveying pipe and the air barrier tube, and between the air barrier tube and the thick-walled tube forms the cooling channel.
[0012] In one embodiment, a ring plate, a connecting flange and a rib plate are provided at the top end of the rod body.
[0013] The beneficial effect of the inclined flow channel stirring head for producing low-nickel matte provided in the present application is that by setting the inclined flow channel, when the stirring is completed, the nickel-iron water in the flow channel is facilitated to automatically flow out by gravity, thereby reducing the hidden danger of flow channel blockage and ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0015] Figure 1 It is a structural schematic diagram of a stirring head in the prior art;
[0016] Figure 2 A schematic cross-sectional view of an inclined flow channel stirring head for producing low-nickel matte provided in an embodiment of the present application;
[0017] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.
[0018] Among them, the reference numerals in the figure are:
[0019] 1. Feed pipe; 2. Sealing plate; 3. Air separator; 4. Thick-walled pipe; 5. Anchor hook; 6. Refractory material; 7. High temperature resistant steel plate; 8. Ring plate; 9. Connecting flange; 10. Rib plate; 11. Inclined pipe. DETAILED DESCRIPTION
[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0024] like Figure 2 and Figure 3As shown, an inclined flow channel mixing head for producing low-nickel matte provided in an embodiment of the present application is now described. The inclined flow channel mixing head for producing low-nickel matte comprises a feed pipe 1, a sealing plate 2, a thick-walled tube 4, an anchor hook 5, a refractory material 6, a high-temperature resistant steel plate 7, a ring plate 8, a connecting flange 9, a rib plate 10 and an inclined tube 11. Among them, the thick-walled tube 4, the anchor hook 5 and the refractory material 6 constitute a rod body, and the high-temperature resistant steel plate 7, the anchor hook 5 and the refractory material 6 constitute a paddle, wherein the paddle is a cross-shaped paddle. A ring plate 8, a connecting flange 9 and a rib plate 10 are provided at the top of the rod body, which are used to connect the mixing head to the transmission device at the top. Specifically, the mixing head controls the speed through a variable frequency motor. The anchor hook 5 is welded to the outside of the thick-walled tube 4 and the outside of the cross-shaped high-temperature resistant steel plate 7, and the refractory material 6 is coated on the outside of the thick-walled tube 4 and the high-temperature resistant steel plate 7 and the anchor hook 5. The air barrier tube 3 and the feed pipe 1 are both arranged in the thick-walled tube 4. The outer diameter of the feed pipe 1 is smaller than the inner diameter of the air barrier tube 3. The outer diameter of the air barrier tube 3 is smaller than the inner diameter of the thick-walled tube 4. The sealing plate 2 is arranged at the bottom end of the thick-walled tube 4. The air barrier tube 3 and the feed pipe 1 are both arranged coaxially with the thick-walled tube 4. The bottom end of the air barrier tube 3 is spaced apart from the sealing plate 2. The bottom end of the feed pipe 1 passes through the center of the sealing plate 2 and is connected with four inclined tubes 11. The inclined tubes 11 are used to form an inclined flow channel. The feed pipe 1 forms a feed channel for conveying nitrogen and liquid sulfur. The gaps between the feed pipe 1 and the air barrier tube 3, and between the air barrier tube 3 and the thick-walled tube 4 form a cooling channel. The cooling channel cools the feed pipe 1 by air cooling or water cooling. One end of the inclined flow channel is connected to the feed channel and the other end of the inclined flow channel is lower than the lowest end of the feed channel. By tilting the flow channel, when the stirring is finished, the nickel-iron water in the flow channel will automatically flow out by gravity, which reduces the hidden danger of blockage of the flow channel and ensures safety.
[0025] like Figure 2 As shown, the angle α between the inclined flow channel and the horizontal plane is 5°-20°; preferably, α is 10°-20°, such as α=14°.
[0026] like Figure 3 As shown, the blade is a cross-shaped structure with two cross-shaped symmetry lines. The horizontal deflection angle β of the inclined flow channel relative to the nearest blade symmetry line is 20°-31°. Preferably, β is 22°-26°, such as β=24°.
[0027] like Figure 3As shown, in this embodiment, the other end port of the inclined flow channel is located on the back flow surface of the blade; the intersection of the end face of the blade and the front flow surface is rounded, and the intersection of two adjacent blades is rounded; in this way, according to the principles of fluid mechanics, nickel iron water and liquid sulfur are easy to form turbulence at the outlet of the flow channel, so that the two are mixed more fully and the reaction process of the two is promoted; at the same time, the rounded corner design reduces the stirring resistance and wear of the stirring head, so that the added liquid sulfur and nickel iron water continue to form a differential speed, reducing the risk of local accumulation of liquid sulfur, and enhancing the mixing and reaction rate of nickel iron water and sulfur; at the same time, reducing the stirring resistance can reduce power consumption and further reduce production costs.
[0028] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. An inclined flow channel stirring head for producing low nickel matte, comprising: A rod body and a blade, wherein the blade is a cross-shaped blade, a feed channel is provided at the center of the rod body, and a cooling channel for cooling the feed channel is provided in the rod body, and the characteristic is that a plurality of inclined flow channels are provided in the blade, one end of which is connected to the feed channel and the other end extends to the side of the blade, and the other end of the inclined flow channel is lower than the lowest end of the feed channel.
2. The inclined flow channel stirring head for producing low nickel matte according to claim 1, characterized in that: The angle between the inclined flow channel and the horizontal plane is 5°-20°.
3. The inclined flow channel stirring head for producing low nickel matte according to claim 2, characterized in that: The angle between the inclined flow channel and the horizontal plane is 10°-20°.
4. The inclined flow channel stirring head for producing low nickel matte as claimed in claim 3, characterized in that: The horizontal deflection angle of the inclined flow channel relative to the blade symmetry line is 20°-31°.
5. The inclined flow channel stirring head for producing low nickel matte according to claim 4, characterized in that: The horizontal deflection angle of the inclined flow channel relative to the blade symmetry line is 22°-26°.
6. The inclined flow channel stirring head for producing low nickel matte according to claim 5, characterized in that: The other end port of the inclined flow channel is located on the back flow surface of the blade.
7. The inclined flow channel stirring head for producing low nickel matte according to claim 6, characterized in that: The intersection of the end surface of the blade and the flow-impacting surface is rounded, and the intersection of two adjacent blades is rounded.
8. The inclined flow channel stirring head for producing low nickel matte according to any one of claims 1 to 6, characterized in that: The rod body comprises a thick-walled tube (4), the outer side of which is provided with an anchor hook (5) and a refractory material (6), the blade comprises a high-temperature resistant steel plate (7) arranged in a cross shape, the outer side of which is provided with an anchor hook (5) and a refractory material (6), the thick-walled tube (4) is provided with an air barrier tube (3) and a feed pipe (1), the bottom end of the thick-walled tube (4) is provided with a sealing plate (2), the air barrier tube (3) is coaxially arranged with the feed pipe (1), the bottom end of the air barrier tube (3) is spaced apart from the sealing plate (2), the other end of the feed pipe (1) passes through the center of the sealing plate (2) and is connected to four inclined tubes (11), the feed pipe (1) forms the feed channel, and the gaps between the feed pipe (1) and the air barrier tube (3), and between the air barrier tube (3) and the thick-walled tube (4) form the cooling channel.
9. The inclined flow channel stirring head for producing low nickel matte according to claim 8, characterized in that: The top end of the rod body is provided with a ring plate (8), a connecting flange (9) and a rib plate (10).