Automatic lead discharging device for melting furnace

Abstract

The utility model discloses a kind of automatic lead discharging devices of melting furnace, belong to non-ferrous smelting melting furnace equipment technical field. Including square well, the square well is set on the side of melting furnace, the bottom of melting furnace and the bottom of square well are communicated by communicating pipe, square well one side lower part is provided with lead discharging port, valve is installed on lead discharging port. The utility model is communicated by setting square well and the communicating pipe of siphon connecting melting furnace and square well outside melting furnace, using the difference of lead liquid and zinc liquid specific gravity, lead liquid is periodically discharged from square well side port, realizes automatic easy control safety mode and discharges lead, reduces artificial material cost.

Description

Technical Field

[0001] This utility model relates to the technical field of non-ferrous metal smelting and melting furnace equipment, specifically to an automatic lead removal device for a melting furnace. Background Technology

[0002] Melting furnaces are widely used in the smelting industry. In lead-zinc smelting, they are used to extract and refine lead and zinc materials. Our plant uses the ISP process, which involves simultaneous smelting of lead-zinc symbiotic ores. Large chunks of crude zinc are quantitatively added to the furnace through the charging port. The furnace temperature is adjusted by controlling the gas and air supply, heating the material to a liquid state. The density difference between lead and zinc causes stratification; the zinc liquid flows out from the top to be cast into ingots, while the lead liquid settles at the bottom of the furnace. The main material in the melting furnace is crude zinc, with a charging capacity of 55 tons per day. The crude zinc material contains approximately 1.5% lead. Lead is removed from the workshop approximately every two weeks using a siphon for manual lead extraction, with a large amount removed each time.

[0003] The melting furnace is a continuous operation furnace, with the internal temperature maintained at approximately 800℃. The material line is stably kept parallel to the feed inlet, and direct heating is achieved through coal gas combustion. The following problems exist during the use of the melting furnace:

[0004] 1. Crude zinc contains 1.5% lead. Lead deposition in the melting furnace can cause flow interruption at the feed port, which can easily lead to tower bulging damage.

[0005] 2. When crude zinc is added to the melting furnace in a measured amount, the change in the lead content of the crude zinc causes fluctuations in the lead liquid in the tower, making it impossible to accurately determine the lead removal time.

[0006] 3. Lead extraction from melting furnaces is usually done manually, and the high temperature of molten lead is quite dangerous. Summary of the Invention

[0007] The purpose of this utility model is to provide an automatic lead removal device for melting furnaces that can both prevent blasting in melting furnaces and increase economic benefits, as well as reduce the labor intensity of operators and improve personnel safety, in order to solve the problems existing in the prior art.

[0008] The technical solution adopted in this utility model is as follows:

[0009] An automatic lead removal device for a melting furnace includes a square well, which is located on the side of the melting furnace. The bottom of the melting furnace is connected to the bottom of the square well through a connecting pipe. A lead removal port is provided on the lower part of one side of the square well, and a valve is installed on the lead removal port.

[0010] The square well is constructed of refractory material and consists of a bottom, front and rear side walls, and a left side wall. The right ends of the front and rear side walls are connected to the melting furnace. The square well measures 400×400 cm in length and width.

[0011] A heat tracing pipe is installed on the square well.

[0012] An observation port and a liquid level exceeding alarm sensor are installed at the top of the well.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] This invention utilizes a square well outside the melting furnace and a siphon connecting the melting furnace and the square well to periodically discharge the lead liquid from the side opening of the square well by taking advantage of the density difference between lead liquid and zinc liquid, thus achieving an automatic, easy-to-control, and safe method for lead discharge and reducing labor and material costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the square well structure of this utility model;

[0017] Figure 3 This is a top view of the square well of this utility model; Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0021] like Figure 1-3This embodiment provides an automatic lead removal device for a melting furnace, including a square well located beside the melting furnace. The bottom of the melting furnace is connected to the bottom of the square well via a connecting pipe. A lead removal port is provided on the lower part of one side of the square well, and a valve is installed on the lead removal port. A siphon channel (connecting pipe) is connected to the bottom of the melting furnace. Utilizing the density difference between molten lead and molten zinc, the molten lead is periodically discharged from the side port of the square well, achieving automatic, easily controlled, and safe lead removal.

[0022] The square well is constructed of refractory material and consists of a bottom, front and rear side walls, and a left side wall. The right ends of the front and rear side walls are connected to the melting furnace. The square well measures 400×400 cm in length and width.

[0023] A heat tracing pipe is installed on the square well to ensure that the molten lead inside the well remains in a molten state.

[0024] An observation port and a liquid level exceeding alarm sensor are installed at the top of the well for easy detection and control.

[0025] In this embodiment, the size of the square well is determined to be 400×400CM based on actual production and safe distance for on-site operation, and the height of the lead discharge port is 764cm. Automatic lead discharge is performed when the bottom of the melting furnace is about 100cm deep.

[0026] The working principle of this invention is as follows: a square well and a melting furnace form a connecting pipe. Molten lead is added to the square well. Utilizing the principle of equal mass at both ends of the connecting pipe, different lead contents in the melting furnace affect the level of the molten lead in the square well. When the lead at the bottom of the melting furnace reaches the required level for lead removal, the molten lead in the square well also reaches a certain height. At this point, the lead removal valve at one end of the square well is opened to remove lead. When the molten lead in the square well drops to the designated height, lead removal from the melting furnace is complete. Lead removal from the melting furnace is controlled by observing the changes in the molten lead in the square well. Lead removal is completed through the lead removal port in the square well, and changes in the molten lead in the furnace are observed in real time, effectively avoiding the hazards of furnace bulging and reducing labor and material costs.

Claims

1. An automatic lead removal device for a melting furnace, characterized in that, The device includes a square well, which is located next to the melting furnace. The bottom of the melting furnace is connected to the bottom of the square well via a connecting pipe. A lead discharge port is provided on the lower part of one side of the square well, and a valve is installed on the lead discharge port.

2. The automatic lead removal device for a melting furnace according to claim 1, characterized in that: The square well is constructed of refractory material and consists of a well bottom, front and rear side walls, and a left side wall. The right ends of the front and rear side walls are connected to the melting furnace.

3. The automatic lead removal device for a melting furnace according to claim 1, characterized in that: A heat tracing pipe is installed on the square well.

4. The automatic lead removal device for a melting furnace according to claim 1, characterized in that: An observation port and a liquid level exceeding alarm sensor are installed at the top of the well.

5. The automatic lead removal device for a melting furnace according to claim 1, characterized in that: The dimensions of the square well are 400×400CM.

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