Slag melt recovery plant

Abstract

The utility model discloses a kind of slag melt recovery equipment, it is related to copper blowing production technical field, slag ladle is used to accommodate the molten slag of copper blowing furnace discharge, slag ladle is driven by the tilting mechanism connected to make tilting type slag removal movement, chute is set on the slag ladle inside molten slag blanking path, laser emission end of laser-induced breakdown spectrometer is located above chute and avoids with the molten slag blanking path in slag ladle, laser-induced breakdown spectrometer focus point is located on the molten slag flow section in chute;Collecting bucket is set below the discharge end of chute;Realize the accurate separation of waste slag and component to be recycled in slag melt in slag ladle.

Description

Technical Field

[0001] This utility model relates to the field of copper concentrate smelting technology, specifically to a slag melt recovery device. Background Technology

[0002] When slag is discharged from a copper smelting furnace, it is in a mixed state, including silica, ferrous oxide, alumina, magnesium oxide, cuprous sulfide, metallic copper, and a small amount of heavy metal oxides (such as lead oxide and zinc oxide). After being placed in the slag bag and allowed to settle, due to the density differences of the components, the slag will gradually form an upper and lower two-layer structure under the action of gravity. The upper layer of slag is composed of molten silica, ferrous oxide, alumina, and magnesium oxide with lower density, which is the main body of the slag. The lower layer of slag is composed of cuprous sulfide, metallic copper, and a small amount of heavy metal oxides with higher density, which is the key target for subsequent recovery. To effectively recover cuprous sulfide, metallic copper, and small amounts of heavy metal oxides from the lower slag layer, the upper slag layer, after settling in one slag bag, needs to be directly poured into another slag bag, while the lower slag to be recovered remains in the original slag bag. This achieves separation between the upper slag layer and the lower slag to be recovered. However, throughout the process, workers must visually inspect whether the upper slag layer has been completely poured out. This method of judgment relying on manual vision has extremely low accuracy and is prone to two types of problems: either insufficient pouring, resulting in some upper slag remaining in the original slag bag, affecting the qualification rate of the recovered products; or excessive pouring, causing the lower slag to be recovered to be mixed into the new slag bag with the upper slag layer, resulting in the loss of copper and valuable metals. Utility Model Content

[0003] The purpose of this invention is to provide a slag melt recovery device that uses a laser-induced breakdown spectrometer to replace manual visual judgment of whether the upper slag has been completely dumped, so as to achieve accurate separation of the upper and lower layers of the slag melt.

[0004] This utility model can be achieved through the following technical solution: a slag melt recovery device, wherein a slag bag is used to contain molten slag discharged from a copper smelting furnace, the slag bag is driven by a connected tilting mechanism to tilt and dump slag, a chute is set on the slag falling path inside the slag bag, the laser emitting end of a laser-induced breakdown spectrometer is located above the chute and avoids the slag falling path inside the slag bag, and the focal point of the laser-induced breakdown spectrometer is located on the slag flow section inside the chute; a collection bucket is set below the discharge end of the chute.

[0005] Compared with the prior art, the present invention has the following beneficial effects:

[0006] Laser-induced breakdown spectrometry (LASDS) replaces manual visual judgment to determine whether the upper slag layer has been completely dumped, enabling accurate separation of waste slag and recoverable components in the molten slag in the slag bag. This avoids problems such as incomplete dumping or excessive dumping that can occur with manual visual observation. By setting up chutes to receive and guide the molten slag, the molten slag forms a stable surface for testing within the chutes, ensuring that the laser of the LASDS is continuously focused on the slag surface, thus enabling continuous detection of slag components. Attached Figure Description

[0007] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0008] Figure 2 This is a schematic diagram of the planar structure of the present invention;

[0009] Figure 3 This is a schematic diagram of the three-dimensional structure of the chute. Detailed Implementation

[0010] To facilitate understanding of this invention, a brief description of existing laser-induced breakdown spectrometers is provided below. Laser-induced breakdown spectrometers utilize laser-induced breakdown spectroscopy (LIBS), which generates plasma by focusing an ultrashort pulse laser to ablate the material surface. Once excited, the material emits characteristic spectral lines. By analyzing the emission spectrum of this plasma, the elemental composition of the sample can be identified, enabling material identification, classification, qualitative and quantitative analysis. Such equipment is readily available on the market.

[0011] Please see Figure 1-3 As shown, a slag melt recovery device includes a slag bag 10 for containing molten slag discharged from a copper smelting furnace. The slag bag 10 is driven by a connected tilting mechanism to tilt and dump slag. A chute 20 is located on the slag discharge path inside the slag bag 10. The laser emitting end of a laser-induced breakdown spectrometer 30 is located above the chute 20 and avoids the slag discharge path inside the slag bag 10. The focal point of the laser-induced breakdown spectrometer 30 is located on the slag flow section inside the chute 20. A collection bucket 40 is located below the discharge end of the chute 20.

[0012] The specific implementation process of the above technical solution includes: First, the tilting mechanism is activated to drive the slag bag 10 to tilt and dump slag, allowing the molten slag to flow into the chute 20 and flow along the chute 20, forming a slag flow section; then, the laser-induced breakdown spectrometer 30 is activated, causing its laser to emit pulsed laser light towards the slag in the chute 20. The laser ablates the slag surface to generate plasma, and the spectrometer collects the plasma spectrum and analyzes the content of elements such as Ca, Si, and Fe in the slag; when the spectrometer detects Cu, the tilting device stops tilting the slag bag 10, and the remaining components in the slag bag 10 are the components to be recovered. The detected slag will flow into the collection bucket 40 through the chute 20 and be collected. This achieves accurate separation of the molten slag in the slag bag 10, avoiding the problems of incomplete dumping or excessive dumping caused by manual visual observation.

[0013] The purpose of setting up the chute 20 is to ensure that the laser of the laser-induced breakdown spectrometer 30 is continuously focused on the slag surface, so that the slag melt forms a stable surface to be detected in the chute 20, thereby realizing continuous detection of slag composition. Because the slag falling path changes with the amount of slag in the slag bag 10 during the pouring process, the laser emitted by the laser-induced breakdown spectrometer 30 cannot be continuously focused on the slag surface on the falling path. Furthermore, the focal point of the laser-induced breakdown spectrometer 30 remains unchanged after focusing, or frequent focusing causes the timing of the slag phase pouring to be missed, which makes it impossible to realize continuous detection of slag composition.

[0014] Furthermore, the laser focusing point of the laser-induced breakdown spectrometer 30 is located in the upstream section of the slag flow section; this allows the laser-induced breakdown spectrometer 30 to capture changes in slag composition in a timely manner, thereby shutting down the tilting equipment in time and reducing the flow of the components to be recovered in the slag bag 10 into the chute.

[0015] The chute 20 has its opening facing upwards and is inclined at one end near the slag bag 10 and the other end near the collection bucket 40. The inclination of the discharge end of the chute 20 toward the collection bucket 40 facilitates the flow of molten slag into the collection bucket 40, reduces the accumulation of molten slag in the chute 20, and enables the laser-induced breakdown spectrometer 30 to detect the slag that has just fallen into the chute 20 in a timely manner.

[0016] The chute 20 has a receiving pool 21 at one end near the slag bag 10. The pool area of ​​the receiving pool 21 is connected to the cavity section 22 of the chute 20. The height of the pool wall 211 around the receiving pool 21 is higher than the height of the cavity wall 221 of the chute 20. The top of the pool wall 211 transitions from high to low to the top of the cavity wall 221. The receiving pool 21 receives the slag falling from the slag bag 10 and guides it into the cavity section 22. The pool wall 211 and the cavity wall 221 block the slag melt in the chute 20 to prevent the slag melt from splashing out of the chute 20.

Claims

1. A slag melt recovery device, characterized in that: The slag bag (10) is used to contain the molten slag discharged from the copper smelting furnace. The slag bag (10) is driven by the connected tilting mechanism to tilt and dump slag. The chute (20) is set on the slag falling path inside the slag bag (10). The laser emitting end of the laser-induced breakdown spectrometer (30) is located above the chute (20) and avoids the slag falling path inside the slag bag (10). The focal point of the laser-induced breakdown spectrometer (30) is located on the slag flow section inside the chute (20). The collection bucket (40) is set below the discharge end of the chute (20).

2. The slag melt recovery equipment according to claim 1, characterized in that: The laser focusing point of the laser-induced breakdown spectrometer (30) is located in the upstream section of the slag flow section.

3. The slag melt recovery equipment according to claim 1, characterized in that: The chute (20) has its opening facing upwards and is inclined with the end near the slag bag (10) being higher and the end near the collection bucket (40) being lower.

4. The slag melt recovery equipment according to claim 2 or 3, characterized in that: The end of the chute (20) near the slag bag (10) is a receiving pool (21). The pool area of ​​the receiving pool (21) is connected to the trough section (22) of the chute (20). The height of the pool wall (211) around the receiving pool (21) is higher than the height of the trough wall (221) of the trough section (22) of the chute (20). The top of the pool wall (211) transitions from high to low to the top of the trough wall (221).

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