Dispersing device for single nozzle of flash furnace

Abstract

The utility model discloses a dispersing device for a single nozzle of a flash furnace. The dispersing device comprises a distributor inner sleeve, an air ring and a distributor cone, the bottom end of the distributor inner sleeve is connected with the distributor cone; the top end of the air ring is connected with the distributor cone; the air ring comprises an air hole, a guide blade and a concave-convex clamping groove; the bottom ends of the air holes are connected with guide blades; a plurality of air holes and a plurality of guide blades are uniformly distributed on the air ring; the concave-convex clamping grooves are positioned at the upper and lower ends of the air ring; the air ring is connected with the distributor cone through the concave-convex clamping groove; the distributor cone is provided with a clamping block matched with the concave-convex clamping groove. The guide blades are inclined; compressed air in the inner sleeve of the distributor is sprayed out in a dispersed and rotating mode through the air holes and the guide blades on the air ring, it is ensured that materials are evenly and continuously dispersed, the mixing efficiency and strength of oxygen-enriched air and raw and auxiliary materials in the flash furnace are improved, and therefore the oxygen utilization rate is improved, the smoke dust occurrence rate is reduced, and the service life of the flash furnace is prolonged. And therefore, the overall operation efficiency, stability and economical efficiency of the flash furnace are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of copper smelting, and particularly relates to a dispersion device for a single nozzle of a flash furnace. Background Art

[0002] A flash furnace is a smelting furnace for strengthening production with a dispersion device for a single nozzle of a flash furnace, mainly used for smelting sulfide concentrates such as copper and nickel, and has the characteristics of high productivity, low energy consumption, and high sulfur dioxide concentration in flue gas. The flash furnace system mainly consists of four core parts: a concentrate nozzle, a reaction tower, a settling tank, and a rising flue.

[0003] In the copper smelting industry, "the full mixing of oxygen-rich air and raw and auxiliary materials" in the flash furnace system has always been a main technical parameter that the industry is committed to improving. The feeding method of the flash furnace is central injection nozzle feeding. Oxygen-rich air and dry raw and auxiliary materials with a large specific surface area are added to the reaction tower in an appropriate proportion. After the gas and raw and auxiliary materials are strongly mixed, they are sprayed into the flash furnace at a high speed for redox reactions. However, during the normal production feeding process, the dispersion air generated by the nozzle limits the mixing intensity of the oxygen-rich air and the materials, resulting in poor reaction conditions in the furnace, low oxygen utilization rate, and high dust generation rate. There are defects such as discontinuous material dispersion and serious erosion of the reaction tower wall. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dispersion device for a single nozzle of a flash furnace with high mixing efficiency, improved furnace conditions, and simple structure, so as to solve the technical problem that the mixing intensity of oxygen-rich air and materials is limited, resulting in poor reaction conditions in the furnace.

[0005] In order to solve the above technical problems, the following solutions are adopted in the utility model:

[0006] A dispersion device for a single nozzle of a flash furnace includes an inner sleeve of a distributor, an air ring, and a distributor cone; the bottom end of the inner sleeve of the distributor is fixedly connected to the distributor cone, and the inner sleeve of the distributor is connected to a compressed air pipeline; the top end of the air ring is connected to the distributor cone, and the compressed air in the compressed air pipeline is dispersed through the air ring, and further dispersed and mixed with the furnace feeding materials dispersed by the distributor cone; the air ring includes air holes, guide vanes, and concave-convex card slots; the bottom end of the air hole is connected to the guide vane; a plurality of air holes and guide vanes are provided and evenly distributed on the air ring; the concave-convex card slots are located at the upper and lower ends of the air ring; the air ring is connected to the distributor cone through the concave-convex card slots; the distributor cone is provided with a block matching the concave-convex card slots; the guide vanes are inclined, and the larger the inclination angle of the guide vanes, the greater the rotational dispersion force generated on the furnace feeding materials.

[0007] Furthermore, a cover is provided on the material distributor cone; the cover is provided with a block that matches the concave-convex card slot; the cover is connected to the air ring through the block and the concave-convex card slot; the cover is connected to the material distributor cone through the air ring. The inner sleeve of the material distributor is externally connected to a compressed air pipeline, and the compressed air is transmitted to the inside of the material distributor cone through the inner sleeve of the material distributor and sprayed out through the air ring. The cover can seal the material distributor cone, so that the compressed air can only be sprayed out through the air holes and guide vanes on the air ring, better mixing with the material entering the furnace and avoiding waste of compressed air resources.

[0008] Furthermore, the air ring is provided with a felt gasket; the felt gasket is connected to the concave-convex card slot. The felt gasket is installed in the concave-convex card slots at the upper and lower ends of the air ring, so that the concave-convex card slot fits tightly with the block, further sealing the material distributor cone and avoiding leakage of compressed air.

[0009] Furthermore, the inclination angle range of the guide vane is 15° - 45°. Guide vanes with different inclination angles can meet different production requirements. The larger the inclination angle of the guide vane, the greater the rotational dispersion force generated on the material entering the furnace. According to different actual production conditions, guide vanes with different inclination angles can be replaced through the concave-convex card slot.

[0010] The working principle of the present utility model is as follows:

[0011] Install this device at the feed pipe of the flash furnace, externally connect a compressed air pipeline at the top, install guide vanes with corresponding inclination angles according to the production conditions, seal the material distributor cone through the pipe cover, so that the compressed air is sprayed out through the air holes and guide vanes of the air ring, generating a rotational force, thereby achieving the effect of stirring the oxygen-rich air and the material entering the furnace, making the material entering the furnace evenly dispersed and more fully mixed with the oxygen-rich air in the reaction tower. The air ring is connected through the concave-convex card slot, which is convenient for replacing air rings with different inclination angles to adapt to different production requirements. The felt gasket can further seal the material distributor cone, so that the compressed air can only be sprayed out through the air holes and guide vanes on the air ring.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The compressed air in the inner sleeve of the material distributor of the present utility model is dispersed and rotated through the air holes and inclined guide vanes on the air ring, ensuring that the material is evenly and continuously dispersed, improving the mixing efficiency and intensity of the oxygen-rich air and the raw and auxiliary materials in the flash furnace, thereby improving the oxygen utilization rate, reducing the dust generation rate, and also alleviating the problems of discontinuous material dispersion and erosion of the reaction tower wall, and further improving the overall operation efficiency, stability and economy of the flash furnace.

[0014] 2. The cover of the present utility model is connected to the air ring through a clamping block and a concave-convex clamping groove, and the air ring is connected to the material cone of the distributor through a clamping block and a concave-convex clamping groove. The cover combined with a felt gasket can effectively seal the material cone of the distributor, ensuring that the compressed air only sprays out through the air holes and guide vanes on the air ring and is fully mixed with the material entering the furnace.

[0015] 3. The guide vanes of the present utility model are provided with different inclination angles and can be replaced through concave-convex clamping grooves and clamping blocks. Different inclination angles of the guide vanes can generate different degrees of rotational dispersion forces and are suitable for different production conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view structural schematic diagram of the present utility model;

[0017] Figure 2 is the front view structural schematic diagram of the air ring of the present utility model;

[0018] Figure 3 is the partial top view sectional structural schematic diagram of the air ring of the present utility model;

[0019] Figure 4 is the partial front view sectional structural schematic diagram of the air ring of the present utility model.

[0020] In the figure: 1. Inner sleeve of the distributor; 2. Air ring; 2.1. Air holes; 2.2. Guide vanes; 2.3. Concave-convex clamping groove; 3. Material cone of the distributor; 3.1. Cover; 4. Felt gasket. 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 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] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] The following further details a dispersion device for a single nozzle of a flash furnace in conjunction with the drawings: Embodiment 1

[0024] A dispersion device for a single nozzle of a flash furnace includes an inner sleeve 1 of the distributor, an air ring 2, and a cone 3 of the distributor; the bottom end of the inner sleeve 1 of the distributor is fixedly connected to the cone 3 of the distributor; the top end of the air ring 2 is connected to the cone 3 of the distributor; the air ring 2 includes air holes 2.1, guiding vanes 2.2, and concave-convex card slots 2.3; the bottom end of the air holes 2.1 is connected to the guiding vanes 2.2; a plurality of the air holes 2.1 and guiding vanes 2.2 are provided and evenly distributed on the air ring 2; the concave-convex card slots 2.3 are located at the upper and lower ends of the air ring 2; the air ring 2 is connected to the cone 3 of the distributor through the concave-convex card slots 2.3; the cone 3 of the distributor is provided with a clamping block matching the concave-convex card slots 2.3; the guiding vanes 2.2 are inclined, and the inclination angle is 30°.

[0025] The working principle of this embodiment is as follows:

[0026] Install this device at the feed pipe of the flash furnace, externally connect the compressed air pipeline at the top, install guiding vanes with an inclination angle of 30°, so that after the compressed air enters the inner sleeve 1 of the distributor, it is ejected through the air holes 2.1 and guiding vanes 2.2 of the air ring 2, generating a rotational acting force. Combining with the cone 3 of the distributor can achieve the effect of stirring the oxygen-enriched air and the material entering the furnace, making the material entering the furnace evenly dispersed and more fully mixed with the oxygen-enriched air in the reaction tower. The air ring 2 is connected through the concave-convex card slots 2.3, which is convenient for replacing the air ring 2.1 with different inclination angles to adapt to different production requirements. Embodiment 2

[0027] The difference from Embodiment 1 is that a cover 3.1 is provided on the material distributor cone 3; the cover 3.1 is provided with a clamping block matching the concave-convex clamping groove 2.3; the cover 3.1 is connected to the air ring 2 through the clamping block and the concave-convex clamping groove 2.3; the cover 3.1 is connected to the material distributor cone 3 through the air ring 2; the air ring 2 is provided with a felt gasket 4; the felt gasket 4 is connected to the concave-convex clamping groove 2.3;

[0028] The inclination angle range of the guide vane 2.2 is 15° to 45°. The inner sleeve 1 of the material distributor is externally connected to a compressed air pipeline. Compressed air is transmitted to the inside of the material distributor cone 3 through the inner sleeve 1 of the material distributor and ejected through the air ring 2. The felt gasket 4 is installed in the concave-convex clamping grooves 2.3 at the upper and lower ends of the air ring 2, so that the concave-convex clamping groove 2.3 is closely attached to the clamping block. The cover 3.1 and the felt gasket 4 can seal the material distributor cone 3, so that the compressed air can only be ejected through the air holes 2.1 and the guide vanes 2.2 on the air ring 2, better mixing with the materials entering the furnace and avoiding waste of compressed air resources; guide vanes 2.2 with different inclination angles can meet different production requirements. The larger the inclination angle of the guide vane 2.2, the greater the rotational dispersion force generated on the materials entering the furnace.

[0029] The working principle of this embodiment is the same as that of Embodiment 1.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dispersion device for a single nozzle of a flash furnace, characterized in that: It includes an inner sleeve (1) of the material distributor, an air ring (2) and a material cone (3) of the material distributor; the bottom end of the inner sleeve (1) of the material distributor is fixedly connected to the material cone (3) of the material distributor; the top end of the air ring (2) is connected to the material cone (3) of the material distributor; the air ring (2) includes air holes (2.1), guide vanes (2.2) and concave-convex card slots (2.3); the bottom end of the air holes (2.1) is connected to the guide vanes (2.2); a plurality of the air holes (2.1) and guide vanes (2.2) are provided and are evenly distributed on the air ring (2); the concave-convex card slots (2.3) are located at the upper and lower ends of the air ring (2); the air ring (2) is connected to the material cone (3) of the material distributor through the concave-convex card slots (2.3); the material cone (3) of the material distributor is provided with a clamping block matching the concave-convex card slots (2.3); the guide vanes (2.2) are inclined.

2. The dispersion device for a single nozzle of a flash furnace according to claim 1, characterized in that: The material cone (3) of the material distributor is provided with a cover (3.1); the cover (3.1) is provided with a clamping block matching the concave-convex card slots (2.3); the cover (3.1) is connected to the air ring (2) through the clamping block and the concave-convex card slots (2.3); the cover (3.1) is connected to the material cone (3) of the material distributor through the air ring (2).

3. A dispersion device for a single nozzle of a flash furnace according to claim 1 or 2, characterized in that: The air ring (2) is provided with a felt gasket (4); the felt gasket (4) is connected to the concave-convex card slots (2.3).

4. A dispersion device for a single nozzle of a flash furnace according to claim 1, characterized in that: The inclination angle range of the guide vanes (2.2) is 15° to 45°.

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