Low-nickel matte casting device

Abstract

The utility model discloses a low-nickel matte casting device. The casting device comprises a rotating device body, a melt casting device, a melt storage and circulation device, a melt casting mold, a gas recovery device, a spray cooling device and a release agent spraying device, 18 melt casting molds are arranged on the rotating device body, and the rotating device body is used for driving the melt casting molds to rotate; the melt casting device is used for casting nickel matte into the melt casting mold; the melt storing and transferring device is used for pouring nickel matte into the melt pouring device; the gas recovery device is used for recovering nickel matte flue gas and water vapor generated by cooling nickel matte; the spray cooling device is used for spraying the surface of the nickel matte block and the bottom of the melt casting mold; the release agent spraying device comprises a release agent stirring tank and a release agent pipeline, release agent liquid is sprayed to the surface of the melt casting mold through the release agent pipeline, and the nickel matte block can be taken out conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical devices, and in particular relates to a low-nickel matte casting device. Background Art

[0002] The nickel side-blowing smelting furnace mainly processes high-content magnesium oxide nickel concentrate, and the low-nickel matte produced is cooled and then enters the converter refining system for processing. At present, all pyrometallurgical smelting plants use a water quenching system to cool the low-nickel matte melt into particles, which are then transported to dump trucks through slag removers, and finally shipped to the converter refining system in ton bags for processing. The entire processing flow is relatively cumbersome and requires a large amount of cooling water, high-pressure air, nitrogen and other energy-consuming working fluids. There is also a risk of "explosion" when the melt meets water. At the same time, the vehicle transportation and packaging procedures directly increase cost consumption. Utility Model Content

[0003] The utility model provides a low-nickel matte casting device, which aims to solve the problem that the existing pyrometallurgical plants all use a water quenching system to cool the low-nickel matte melt into particles, then transport it to a dump truck through a slag remover, and finally transport it to a converter blowing system for processing in ton bags, and the processing flow is relatively cumbersome.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A low-nickel matte casting device, comprising a rotating device body, a melt casting device, a melt storage and circulation device, a melt casting mold, a gas recovery device, a spray cooling device and a release agent spraying device;

[0006] A rotating mechanism is provided at the center of the rotating device body, and a radial steel beam is welded around the rotating mechanism, and the outer ring of the radial steel beam forms a circle as a whole; a transmission gear is provided below the edge of the radial steel beam, and the transmission gear is driven by a motor to rotate, thereby driving the rotating device body to rotate; a plurality of melt casting molds distributed at equal angles are provided on the radial steel beam, and the melt casting molds are used to contain nickel matte;

[0007] The melt casting device is a "boat-shaped" container, which is welded from stainless steel plates, with clay bricks laid inside and refractory magnesium powder rolled on the surface. The melt casting device is used to pour nickel matte into the melt casting mold;

[0008] The melt storage and circulation device is a rectangular side-extending discharge port structure, and a discharge chute is provided on the top of the device for pouring nickel matte into the melt casting device;

[0009] The gas recovery device comprises a gas collecting hood, an exhaust duct and an exhaust fan. The gas collecting hood is installed above the casting mold, the upper part of the gas collecting hood is connected to an exhaust duct, and the exhaust duct is connected to the exhaust fan; the gas recovery device is used to recover the nickel matte fume and the water vapor generated by cooling the nickel matte;

[0010] The spray cooling device includes a cooling water main pipe and a branch pipe, the cooling water main pipe surrounds the edge of the exhaust hood, the branch pipe is led out from the main pipe, the branch pipe extends to the inside of the exhaust hood and below the melt casting mold, and a nozzle is installed on the branch pipe, the nozzle is used to spray the surface of the nickel matte block and the bottom of the melt casting mold;

[0011] The release agent spraying device comprises a release agent stirring tank and a release agent pipeline, and the release agent liquid is sprayed onto the surface of the melt casting mold through the release agent pipeline, so as to facilitate the removal of the nickel matte block.

[0012] Furthermore, 18 mold positions are provided on the radiation steel beam.

[0013] The beneficial effects of the utility model are as follows: after the nickel matte block is cooled and taken out, it is directly lifted onto a flatbed car and transported to the converter blowing system to wait for processing; the device eliminates the water quenching system, has a high degree of automation, can complete quantitative automatic casting, eliminates the safety hazard of "blasting", greatly reduces various energy consumption, and reduces vehicle and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a layout diagram of the gas recovery device of the utility model;

[0016] Figure 3 It is a top view of the main body of the rotating device of the utility model;

[0017] In the figure: 1-rotating device body, 2-melt casting device, 3-melt storage and circulation device, 4-melt casting mold, 5-gas recovery device, 6-spray cooling device. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0019] like Figures 1 to 3 As shown, a low-nickel matte casting device includes a rotating device body 1, a melt casting device 2, a melt storage and circulation device 3, a melt casting mold 4, a gas recovery device 5, a spray cooling device 6 and a release agent spraying device.

[0020] A rotating mechanism is provided at the center of the rotating device body 1, and radial steel beams are welded around the rotating mechanism to form a standard circular shape as a whole. A transmission gear is provided under the edge, and the device is rotated by a motor. 18 mold positions are provided on the radial beam of the rotating device body 1. During operation, it needs to stay for a sufficient time every time it rotates 30°, and then rotate to the next mold position after the target mold is filled with nickel matte.

[0021] The melt casting device 2 is a "boat-shaped" container, which is welded from 20mm thick stainless steel plates, with clay bricks laid inside and refractory magnesium powder rolled on the surface. The nickel matte stays in the device for a short time. When the target mold rotates to below the discharge port of the device, the casting device is tilted to pour the nickel matte into the target mold. After the operation is completed, it returns to its original position and waits for the next tilting casting.

[0022] The melt storage and circulation device 3 is a rectangular side extended discharge port structure. The material and internal masonry method are the same as those of the melt casting. A discharge chute is provided on the top of the device. The nickel matte flows into the device and stays for a short time. After the casting device completes an operation, the device is tilted, and the nickel matte flows into the casting device from the discharge port. After the operation is completed, it returns to its original position to temporarily store the nickel matte and wait for the next operation.

[0023] The melt casting mold 4 is made of alloy cast iron and has good heat resistance, corrosion resistance, erosion resistance and other functions. After the nickel matte melt enters the mold, it forms a fixed shape and waits for lifting.

[0024] The gas recovery device 5 includes a gas collecting hood, an exhaust duct and an exhaust fan. The gas collecting hood is installed above the casting mold, and an exhaust duct is provided on the upper part. The duct is connected to the exhaust fan and is mainly used to recover nickel matte fume and cool the water vapor generated by the nickel matte.

[0025] The spray cooling device 6 consists of a cooling water main pipe and branch pipes. The cooling water main pipe surrounds the edge of the exhaust hood. The branch pipes are led out from the main pipe and distributed inside the exhaust hood and at the bottom of the mold. The branch pipes are installed with nozzles. The cooling water forms an "umbrella shape" after being sprayed out from the nozzles, and sprays all over the surface of the nickel matte block and the bottom of the mold to cool the nickel matte block and the mold body.

[0026] The release agent spraying device consists of a release agent stirring tank and a release agent pipeline. The release agent is added into the stirring tank and fully stirred and mixed with new water. A screening filter is installed inside to remove impurities. The release agent liquid is sprayed onto the mold surface through the delivery pipeline, which is convenient for efficient demolding and removal of the nickel matte block.

Claims

1. A low nickel matte casting device, It is characterized in that The casting device comprises a rotating device body, a melt casting device, a melt storage and circulation device, a melt casting mold, a gas recovery device, a spray cooling device and a release agent spraying device; A rotating mechanism is provided at the center of the rotating device body, and a radial steel beam is welded around the rotating mechanism, and the outer ring of the radial steel beam forms a circle as a whole; a transmission gear is provided below the edge of the radial steel beam, and the transmission gear is driven by a motor to rotate, thereby driving the rotating device body to rotate; a plurality of melt casting molds distributed at equal angles are provided on the radial steel beam, and the melt casting molds are used to contain nickel matte; The melt casting device is a "boat-shaped" container, which is welded from stainless steel plates, with clay bricks laid inside and refractory magnesium powder rolled on the surface. The melt casting device is used to pour nickel matte into the melt casting mold; The melt storage and circulation device is a rectangular side-extending discharge port structure, and a discharge chute is provided above the device for pouring nickel matte into the melt casting device; The gas recovery device comprises a gas collecting hood, an exhaust duct and an exhaust fan. The gas collecting hood is installed above the casting mold, the upper part of the gas collecting hood is connected to an exhaust duct, and the exhaust duct is connected to the exhaust fan; the gas recovery device is used to recover the nickel matte fume and the water vapor generated by cooling the nickel matte; The spray cooling device includes a cooling water main pipe and a branch pipe, the cooling water main pipe surrounds the edge of the exhaust hood, the branch pipe is led out from the main pipe, the branch pipe extends to the inside of the exhaust hood and below the melt casting mold, and a nozzle is installed on the branch pipe, the nozzle is used to spray the surface of the nickel matte block and the bottom of the melt casting mold; The release agent spraying device comprises a release agent stirring tank and a release agent pipeline, and the release agent liquid is sprayed onto the surface of the melt casting mold through the release agent pipeline, so as to facilitate the removal of the nickel matte block.

2. The low nickel matte casting device according to claim 1, It is characterized in that There are 18 mold positions on the radiation steel beam.

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