Device for preventing oxygen lance of oxygen-enriched bottom blowing furnace from loosening

Abstract

The utility model relates to a device for preventing an oxygen lance of an oxygen-enriched bottom blowing furnace from loosening, which aims to solve the technical problems that the oxygen lance is easy to loosen and difficult to replace when being fixed, and adopts the technical scheme that the device comprises an oxygen lance base, a lance skin support plate and an oxygen lance skin, and the oxygen lance base is arranged on the furnace wall of the bottom blowing furnace through a bolt; the lance cover supporting plate is arranged on the oxygen lance base through a bolt, and the oxygen lance cover is placed in the middle of the lance cover supporting plate; the device further comprises a fastening plate, a fastening bolt and a fixing pin shaft, an annular sleeve is arranged in the middle of the fastening plate, the sleeve is arranged on the outer side wall of the oxygen lance skin in a sleeving mode, fixing lugs are evenly arranged on the periphery of the outer side wall of the sleeve, bolt holes are formed in the fixing lugs, and the fastening plate is fixedly connected with the lance skin supporting plate through the fastening bolt and the bolt holes. And the oxygen lance skin and the fastening plate are fixedly connected by inserting a fixed pin shaft into the pin hole. The oxygen lance cover is fixed through the bolt and the pin shaft, the oxygen lance is not prone to loosening in the using process and easy to replace, and the service life of the oxygen lance can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen-enriched bottom blowing furnace equipment, and in particular relates to a device for preventing an oxygen lance of an oxygen-enriched bottom blowing furnace from loosening. Background Art

[0002] Copper is the second most widely used nonferrous metal in the world after aluminum, and its excellent performance is a necessary material for military enterprises. Therefore, copper smelting is one of the industries that governments of various countries attach importance to. The oxygen-enriched bottom-blown furnace molten pool smelting technology belongs to the "12th Five-Year Plan" promotion technology for copper smelting in my country, and is a new type of copper smelting process with completely independent intellectual property rights in my country. This new process has the advantages of "strong raw material adaptability, low energy consumption, high sulfur removal rate, self-heating smelting, and high degree of automation" and is widely used in the construction of new copper smelting projects. The key equipment of the oxygen-enriched bottom-blown molten pool smelting copper smelting process is the oxygen-enriched bottom-blown smelting furnace. Oxygen and air are blown in from the oxygen lance at the bottom of the furnace to strongly stir the molten pool and quickly complete the reaction, so that the mixed copper concentrate added from the feeding port completes the heating, dehydration, decomposition, melting, oxidation, matte making, and slag making reactions. The liquid matte and slag produced by the reaction are layered due to different specific gravities and are intermittently released from the matte port and slag port respectively. The matte is transported to the converter through the bun, and the generated slag is transported to the hot slag slow cooling field for slow cooling. After cooling, it is transported to the beneficiation plant for ore dressing. The oxygen lance is one of the most important components in the production of oxygen-enriched bottom-blown furnaces. It can provide the high-pressure industrial pure oxygen required for the production of bottom-blown furnaces. Since the life of the oxygen lance has a great influence on the operating rate of the bottom-blown furnace, the replacement time of the oxygen lance, whether the oxygen lance is closely matched with the oxygen lance seat and the lance brick, also indirectly affects the operating rate of the bottom-blown furnace.

[0003] At present, the oxygen lance of the oxygen-enriched bottom-blowing furnace is fixed by wrapping iron wire between the oxygen lance and the oxygen lance base. During use, the iron wire is easy to loosen, which affects the service life of the oxygen lance, and it takes a long time to replace the oxygen lance, thus affecting the operation rate of the bottom-blowing furnace. Utility Model Content

[0004] The utility model aims to solve the above problems and provide a device to prevent the oxygen lance of an oxygen-enriched bottom blowing furnace from loosening.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A device for preventing the oxygen lance of an oxygen-enriched bottom-blowing furnace from loosening comprises an oxygen lance base, a lance skin support plate and an oxygen lance skin, wherein the oxygen lance base is arranged on the furnace wall of the bottom-blowing furnace by bolts, the lance skin support plate is arranged on the oxygen lance base by bolts, and the oxygen lance skin is placed in the middle of the lance skin support plate;

[0007] It also includes a fastening plate, a plurality of fastening bolts and a fixing pin shaft. The middle of the fastening plate is an annular sleeve, and the sleeve is sleeved on the bottom of the outer wall of the oxygen gun skin. A plurality of fixing ears are evenly arranged around the outer wall of the sleeve, and bolt holes are provided on the fixing ears. The fastening plate is fixedly connected to the gun skin support plate through the fastening bolts and the bolt holes. Pin holes are provided on the side walls of the oxygen gun skin at the bottom and the same height as the sleeve. The oxygen gun skin and the fastening plate are fixedly connected by inserting the fixing pin into the pin hole.

[0008] The inner diameter of the sleeve is equal to the outer diameter of the oxygen lance skin.

[0009] Furthermore, the number of the fixing ears is 6≥a≥2.

[0010] Furthermore, a handle is provided at the end of the fixing pin.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model uses a fastening plate, a fastening bolt and a fixing pin to fix the oxygen gun skin. The oxygen gun is not easy to loosen during use, thereby effectively extending the service life of the oxygen gun;

[0013] 2. The utility model is fixed by pins and bolts, which is convenient for disassembly and simple for replacing the oxygen lance skin, thereby greatly improving the operating efficiency of the bottom blowing furnace.

[0014] 3. The utility model has a simple structure, is easy to operate, has a low cost and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] In the figure: 1. oxygen gun base; 2. gun skin support plate; 3. fastening plate; 4. fastening bolt; 5. oxygen gun skin; 6. fixing pin; 7. handle; 3.1. sleeve; 3.2. fixing ear. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Example 1

[0019] like Figure 1 As shown, a device for preventing the oxygen lance of an oxygen-enriched bottom blowing furnace from loosening comprises an oxygen lance base 1, a lance skin support plate 2 and an oxygen lance lance skin 5, wherein the oxygen lance base 1 is arranged on the furnace wall of the bottom blowing furnace by bolts, the lance skin support plate 2 is arranged on the oxygen lance base 1 by bolts, and the oxygen lance lance skin 5 is placed in the middle of the lance skin support plate 2;

[0020] The oxygen gun skin 5 and the oxygen gun skin 5 are fixedly connected to each other with the fixing pin 6 through the fixing plate 3. The fixing pin 6 is provided with a fixing bolt 4 and a fixing bolt 6. The fixing bolt 4 is provided with a fixing bolt 6 and a fixing bolt 6. The fixing bolt 4 is provided with a fixing bolt 6 and a fixing bolt 6. The fixing bolt 4 is provided with a fixing bolt 6 and a fixing bolt 6. The fixing bolt 6 is provided with a fixing bolt 6 and a fixing bolt 6. The fixing bolt 6 is provided with a fixing bolt 6 and a fixing bolt 6. The fixing bolt 6 is provided with a fixing bolt 6 and a fixing bolt 6. The fixing bolt 6 is provided with a fixing bolt 6 and a fixing bolt 6. The fixing bolt 6 is provided with a fixing bolt 6 and a fixing bolt 6.

[0021] The number of the fixing ears 3.2 can also be any value between 6≥a≥2.

[0022] The working process of this utility model:

[0023] When the utility model is used, the oxygen gun skin 5 is placed in the middle of the gun skin support plate 2, the sleeve 3.1 of the fastening plate 3 is sleeved on the outer wall, the fixing ear 3.2 is fixedly connected to the gun skin support plate 2 by the fastening bolt 4, and then the oxygen gun skin 5 is rotated to align the oxygen gun skin 5 with the pin hole on the sleeve 3.1, the handle 7 is held to insert the fixing pin 6 into the pin hole, the oxygen gun skin 5 is fixed, and then the oxygen gun is inserted into the oxygen gun skin 5;

[0024] After using for a period of time, the oxygen lance skin 5 needs to be replaced. At this time, pull out the fixing pin 6, unscrew the fastening bolt 4, separate the oxygen lance skin 5 from the sleeve 3.1, replace a new oxygen lance skin 5, insert it into the sleeve 3.1, and repeat the above operation.

Claims

1. A device for preventing an oxygen lance of an oxygen-enriched bottom-blowing furnace from loosening, comprising an oxygen lance base (1), a lance skin support plate (2) and an oxygen lance skin (5), wherein the oxygen lance base (1) is arranged on the furnace wall of the bottom-blowing furnace by bolts, the lance skin support plate (2) is arranged on the oxygen lance base (1) by bolts, and the oxygen lance skin (5) is placed in the middle of the lance skin support plate (2); It is characterized in that The invention also comprises a fastening plate (3), a plurality of fastening bolts (4) and a fixing pin (6); the middle of the fastening plate (3) is a circular sleeve (3.1); the sleeve (3.1) is sleeved on the bottom of the outer wall of the oxygen lance skin (5); the outer wall of the sleeve (3.1) is evenly provided with a plurality of fixing ears (3.2); the fixing ears (3.2) are provided with bolt holes; the fastening plate (3) is fixedly connected to the skin support plate (2) through the fastening bolts (4) and the bolt holes; the bottom of the side wall of the oxygen lance skin (5) and the side wall of the sleeve (3.1) at the same height are provided with pin holes; the oxygen lance skin (5) and the fastening plate (3) are fixedly connected by inserting the fixing pin (6) into the pin hole.

2. The device for preventing the oxygen lance of an oxygen-enriched bottom blowing furnace from loosening according to claim 1, characterized in that: The inner diameter of the sleeve (3.1) is equal to the outer diameter of the oxygen lance skin (5).

3. The device for preventing the oxygen lance of an oxygen-enriched bottom blowing furnace from loosening according to claim 1, characterized in that: The number of the fixing ears (3.2) is 6≥a≥2.

4. The device for preventing the oxygen lance of an oxygen-enriched bottom blowing furnace from loosening according to claim 1, characterized in that: A handle (7) is provided at the end of the fixing pin shaft (6).

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