Large oxygen-enriched side-blown smelting furnace

Abstract

The utility model relates to the technical field of oxygen-enriched side-blown smelting furnaces, and provides a large oxygen-enriched side-blown smelting furnace which comprises a smelting furnace body used for providing a high-temperature smelting environment for raw materials. The melting table is arranged in the smelting furnace and used for placing raw materials for smelting; and the separation assembly is arranged outside the smelting furnace, communicates with the melting table and is used for separating the liquid metal from the waste residues, and the separation assembly comprises a separation box, a collecting piece arranged in the separation box and used for filtering and separating the liquid metal and a cleaning piece used for cleaning the collecting box. The problems that a filter plate is easily blocked by waste residues, and the separation efficiency is reduced after long-time use are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen-enriched side-blowing smelting furnaces, in particular to a large-scale oxygen-enriched side-blowing smelting furnace. Background Art

[0002] The characteristics of the oxygen-enriched side-blowing reduction smelting furnace are as follows: (1) It has strong adaptability to raw materials. The charge does not need to be dried, finely ground or other special treatments. The material preparation is simple. Materials containing 6% to 9% can be directly put into the furnace; (2) The smelting is rapid. The oxygen-enriched air blown into the melt stirs the melt violently. The charge quickly completes the main reaction between gas, liquid and solid phases in the liquid state; (3) The lead content in the slag is low and the metal recovery rate is high. The oxygen-enriched side-blowing allows the sulfur in the material to be fully burned and converted into heat energy, which can save 30% of the fuel. The reduction is good and the recovery rate reaches 98%; (4) The smelting process is simple and easy to operate. The liquid level in the furnace is stable and adjustable.

[0003] At present, the smelting furnace used by smelting enterprises is to melt the raw materials into liquid in the smelting furnace, and then use the principle of metal specific gravity to separate the metal from the slag at the bottom of the smelting furnace, and then collect the liquid metal and liquid slag through the slag discharge port and solution outlet;

[0004] Chinese utility model patent CN201922031625.5 discloses an oxygen-enriched side-blown smelting furnace for separating slag outside the furnace body, comprising a bottom plate, a discharge pipe and a blower; bottom plate: a smelting furnace is provided in the middle of the upper surface of the bottom plate, a melting table is provided on the top of the smelting furnace, a discharge hole is provided on the side of the melting table, and a discharge pipe is provided at the discharge hole; blower: the blower is provided on the upper surface of the bottom plate, and the blower is on the side of the smelting furnace, and an induced draft pipe is fixedly connected to the air outlet of the blower.

[0005] However, in the prior art solutions, the waste residue cannot be cleaned in time during the filtration, which easily causes the waste residue to accumulate and affects the filtration efficiency. Utility Model Content

[0006] The purpose of the utility model is to address the deficiencies of the prior art and provide a melting table and a separation component. The separation of metal and waste slag is achieved by arranging a collecting part and a cleaning part of the separation component. At the same time, the waste slag is cleaned in time, thereby solving the problem that the waste slag easily blocks the filter plate and the separation efficiency is reduced after long-term use.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A large oxygen-enriched side-blown smelting furnace, comprising:

[0009] A smelting furnace, wherein the smelting furnace is used to provide a high-temperature smelting environment for raw materials;

[0010] A melting table, which is arranged inside the melting furnace and is used to place raw materials for melting;

[0011] A separation component is arranged outside the smelting furnace and connected to the melting table, and is used to separate liquid metal from waste slag. The separation component includes a separation box, a collecting piece arranged inside the separation box and used to filter and separate the liquid metal, and a cleaning piece for cleaning the collecting box.

[0012] Preferably, the melting table is arranged in a shape of "low in the middle and high at the edges", and a feed pipe is arranged in the middle, the feed pipe is connected to the separation box, a cover plate is arranged on the feed pipe in the middle of the melting table, and a liquid flow groove is reserved between the cover plate and the feed pipe.

[0013] Preferably, the collecting member comprises a collecting box arranged below the outlet of the feeding pipe, and waste boxes which are respectively arranged on both sides of the collecting box and can be pulled out of the separation box.

[0014] Preferably, the top of the collecting box is provided with a filter plate and a discharge port is provided at the bottom.

[0015] Preferably, the cleaning component includes a clearing plate arranged on the filter plate and in contact with the surface of the filter plate, a movable frame slidably connected to the separation box and fixedly connected to the clearing plate, and a motor that drives the movable frame to move linearly and reciprocatingly through a gear rack transmission.

[0016] Preferably, the cleaning component also includes two groups of scrapers arranged on both sides of the filter plate and used to scrape the surface of the dredging plate, an electric cylinder for controlling the movement of the scrapers, and a contact switch for controlling the operation of the electric cylinder and having contacts arranged on both sides of the movable frame.

[0017] Preferably, an air duct connecting the smelting furnace and the separation box is provided at the top of the smelting furnace.

[0018] The beneficial effects of the utility model are:

[0019] (1) The utility model enables the molten liquid metal to flow from the feeding pipe to the separation component in time through the setting of the melting table, thereby reducing the residue of raw materials on the melting table. At the same time, the setting of the cover plate prevents the raw materials from falling from the melting table into the feeding pipe without calcination;

[0020] (2) The utility model provides a separation component to clean the waste residue in real time during the filtering process and transfer the waste residue to a waste box for collection, thereby preventing the waste residue from accumulating after long-term use and affecting the filtering efficiency;

[0021] (3) The utility model introduces the heat in the smelting furnace into the separation box by arranging an air guide pipe, so that the temperature in the separation box is always maintained at a high level, thereby preventing the liquid metal from solidifying during the separation and flow process and adhering to the pipe or filter plate, thereby affecting the filtering and separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the melting table of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the separation component of the utility model;

[0025] Figure 4 This is a schematic diagram of the relevant structure of the collection box of the utility model;

[0026] Figure 5 This is a schematic diagram of the relevant structure of the cleaning piece of the utility model;

[0027] Figure 6 This is a schematic diagram of the relevant structure of the motor of the utility model; DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] like Figure 1-3 As shown, a large oxygen-enriched side-blown smelting furnace comprises:

[0031] A smelting furnace 1, wherein the smelting furnace 1 is used to provide a high-temperature smelting environment for raw materials;

[0032] A melting table 2, which is arranged inside the melting furnace 1 and is used to place raw materials for melting;

[0033] The separation component 3 is arranged outside the smelting furnace 1 and connected to the melting table 2, and is used to separate the liquid metal from the waste slag. The separation component 3 includes a separation box 31, a collecting part 32 arranged inside the separation box 31 and used to filter and separate the liquid metal, and a cleaning part 33 for cleaning the collecting box 321.

[0034] In this embodiment, the melting table 2 and the separation component 3 are provided to guide the molten liquid metal into the separation component 3, and the liquid metal and the waste slag therein are separated by the collecting component 32. In the filtering process, the filtered waste slag is cleaned by the cleaning component 33 to prevent the waste slag from clogging the collecting component 32.

[0035] Further, if Figure 2 As shown, the melting table 2 is arranged in a shape of "low in the middle and high at the edges", and a feeding pipe 21 is arranged in the middle, the feeding pipe 21 is connected to the separation box 31, a cover plate 22 is arranged on the feeding pipe 21 in the middle of the melting table 2, and a liquid flow groove is reserved between the cover plate 22 and the feeding pipe 21.

[0036] In this embodiment, a melting table 2 is provided for placing raw materials so that the raw materials can be gathered in the middle of the melting table 2 after melting and transported to the separation component 3 through the feeding pipe 21, and a cover plate 22 and a liquid flow groove are provided to shield the opening of the feeding pipe 21 to prevent the raw materials from falling directly into the feeding pipe 21 without affecting the flow and transportation of liquid metal.

[0037] Further, if Figure 4 As shown, the collecting member 32 includes a collecting box 321 disposed below the outlet of the feeding pipe 21 , and waste boxes 322 disposed on both sides of the collecting box 321 and capable of being pulled out of the separation box 31 .

[0038] In this embodiment, the collecting box 321 is arranged inside the separation box 31 and below the feeding pipe 21, so that the liquid metal can flow into the collecting box 321. At the same time, the waste boxes 322 arranged on both sides are used to store the waste slag separated by filtration. The removable setting facilitates the cleaning of the waste box 322 and the regular removal of the waste slag from the device.

[0039] Further, if Figure 4As shown, the top of the collection box 321 is provided with a filter plate 323 and a discharge port 324 is provided at the bottom.

[0040] In this embodiment, a filter plate 323 is set on the top of the collection box 321 to filter the liquid metal, so that the metal falls into the collection box 321 through the filter plate 323 and flows out through the discharge port 324, while the waste residue is filtered by the filter plate 323 and stays on the filter plate 323, thereby realizing the separation of the filter plate 323 and the waste residue.

[0041] Further, if Figure 5 , 6 As shown, the cleaning component 33 includes a clearing plate 331 arranged on the filter plate 323 and in contact with the surface of the filter plate 323, a movable frame 332 slidably connected to the separation box 31 and fixedly connected to the clearing plate 331, and a motor 333 that drives the movable frame 332 to move linearly and reciprocatingly through a gear rack transmission method.

[0042] In order to drive the movable frame 332 by the motor 333, a rack 336 can be set on the movable frame 332, and a shift block 337 is meshed on the rack 336. One end of the shift block 337 is set as an incomplete gear meshed with the rack 336, and the other end is set with a slide groove. At the same time, a turntable 338 is fixedly connected to the output shaft of the motor 333 and a slider is fixed on the turntable 338. The slider is located inside the slide groove of the shift block 337.

[0043] In this embodiment, the turntable 338 is driven to rotate by the motor 333, and the slider on the turntable 338 drives the dial block 337 to rotate. The dial block 337 drives the movable frame 332 to move back and forth, driving the dredging plate 331 to slide back and forth on the filter plate 323, and pushing the waste residue intercepted on the filter plate 323 into the waste boxes 322 on both sides respectively, so as to clean the waste and prevent the waste from accumulating on the filter plate 323 and affecting the filtering efficiency.

[0044] Further, if Figure 5 As shown, the cleaning member 33 also includes two groups of scrapers 334 arranged on both sides of the filter plate 323 and used to scrape the surface of the clearing plate 331, an electric cylinder 335 for controlling the movement of the scraper 334, and a contact switch for controlling the operation of the electric cylinder 335 and having contacts arranged on both sides of the movable frame 332.

[0045] In this embodiment, the control of the electric cylinder 335 is achieved by setting contact switches on both sides of the movable frame 332. When the movable frame 332 moves to one side, that is, when the dredging plate 331 pushes the waste residue out of the filter plate 323, the contact on the movable frame 332 contacts the contact switch, the electric cylinder 335 starts, and the scraper 334 on the telescopic rod of the electric cylinder 335 moves forward to scrape the surface of the dredging plate 331 to prevent the waste residue from sticking to the surface of the dredging plate 331.

[0046] Further, if Figure 1 As shown, a gas duct 11 connecting the smelting furnace 1 and the separation box 31 is provided at the top of the smelting furnace 1 .

[0047] It should be noted that the high-temperature exhaust gas generated by the calcining furnace is poured into the separation box 31 through the air duct to keep a relatively high temperature in the separation box 31. Since the separation component 3 is arranged outside the calcining furnace, the temperature in the separation box 31 is relatively low, which may cause the liquid metal to solidify. By introducing the high-temperature exhaust gas of the calcining furnace into the separation box 31, the separation box 31 is kept at a relatively high temperature to avoid the solidification of the liquid metal and to avoid the waste slag and liquid metal from sticking to the separation component 3 and being difficult to remove.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large oxygen-enriched side-blown smelting furnace, characterized in that: include: A smelting furnace (1), wherein the smelting furnace (1) is used to provide a high-temperature smelting environment for raw materials; A melting table (2), the melting table (2) being arranged inside the melting furnace (1) and used for placing raw materials for melting; A separation component (3), the separation component (3) being arranged outside the smelting furnace (1) and connected to the melting table (2), and being used to separate liquid metal from waste slag, the separation component (3) comprising a separation box (31), a collection piece (32) arranged inside the separation box (31) and being used to filter and separate the liquid metal, and a cleaning piece (33) being used to clean the collection box (321).

2. A large oxygen-enriched side-blown smelting furnace according to claim 1, characterized in that: The melting table (2) is arranged in a shape of "low in the middle and high at the edges", and a feeding pipe (21) is arranged in the middle, the feeding pipe (21) is connected to the separation box (31), a cover plate (22) is arranged on the feeding pipe (21) in the middle of the melting table (2), and a liquid flow groove is reserved between the cover plate (22) and the feeding pipe (21).

3. A large oxygen-enriched side-blown smelting furnace according to claim 1, characterized in that: The collecting member (32) comprises a collecting box (321) arranged below the outlet of the feeding pipe (21), and waste boxes (322) respectively arranged on both sides of the collecting box (321) and capable of being pulled out of the separation box (31).

4. A large oxygen-enriched side-blown smelting furnace according to claim 3, characterized in that: The top of the collection box (321) is provided with a filter plate (323) and a discharge port (324) is provided at the bottom.

5. The large oxygen-enriched side-blown smelting furnace according to claim 1, characterized in that: The cleaning member (33) comprises a dredging plate (331) disposed on the filter plate (323) and in contact with the surface of the filter plate (323), a moving frame (332) slidably connected to the separation box (31) and fixedly connected to the dredging plate (331), and a motor (333) for driving the moving frame (332) to move linearly and reciprocally by means of a gear rack transmission.

6. A large oxygen-enriched side-blown smelting furnace according to claim 5, characterized in that: The cleaning member (33) further comprises two groups of scrapers (334) arranged on both sides of the filter plate (323) and used to scrape the surface of the dredging plate (331), an electric cylinder (335) used to control the movement of the scrapers (334), and a contact switch used to control the operation of the electric cylinder (335) and having contacts arranged on both sides of the moving frame (332).

7. The large oxygen-enriched side-blown smelting furnace according to claim 1, characterized in that: The top of the smelting furnace (1) is provided with an air guide pipe (11) connecting the smelting furnace (1) and the separation box (31).

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