Method for replacing filter plate of aluminum liquid filter basin

A replacement method and filter plate technology, applied in mechanical cleaning, manufacturing tools, metal processing equipment, etc., can solve problems such as failure to install filter plates normally, secondary pollution, high labor intensity, etc., to avoid slag inclusion in molten aluminum and The effects of secondary pollution, convenient replacement of filter plates, and reduced labor intensity

A replacement method and filter plate technology, applied in mechanical cleaning, manufacturing tools, metal processing equipment, etc., can solve problems such as failure to install filter plates normally, secondary pollution, high labor intensity, etc., to avoid slag inclusion in molten aluminum and The effects of secondary pollution, convenient replacement of filter plates, and reduced labor intensity

CN110385407AActive Publication Date: 2019-10-29重庆丰禾铝业有限公司
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Taking the processing of aluminum alloy ingots in the flat ingot workshop of Chongqing Fenghe Aluminum Co., Ltd. as an example, after the aluminum composition in the holding furnace is qualified, it is filtered by the liquid aluminum filter basin and sent to the casting machine for ingot casting. The filter plate matching the basin needs to be replaced frequently, the specific method is as follows:

[0026] A. After the last casting, use the crane to lift the top cover of the liquid aluminum filter basin, and use the slag knife to remove the scum remaining on the surface of the liquid aluminum above the filter plate;

[0027] B. Open the vent hole at the bottom of the aluminum liquid filter basin until no aluminum liquid leaks out, and empty the residual aluminum liquid above and below the filter plate;

[0028] C. Clean up the briquette in the hot state, and use an iron drill to poke a through hole with a diameter of 50mm in the filter plate, and use the through hole t...

Embodiment 2

[0034] Taking the processing of aluminum alloy ingots in the flat ingot workshop of Chongqing Fenghe Aluminum Co., Ltd. as an example, after the aluminum composition in the holding furnace is qualified, it is filtered by the liquid aluminum filter basin and sent to the casting machine for ingot casting. The filter plate matching the basin needs to be replaced frequently, the specific method is as follows:

[0035] A. After the last casting, use the crane to lift the top cover of the liquid aluminum filter basin, and use the slag knife to remove the scum remaining on the surface of the liquid aluminum above the filter plate;

[0036] B. Open the vent valve at the bottom of the aluminum liquid filter basin until no aluminum liquid leaks out, and empty the residual aluminum liquid above and below the filter plate;

[0037] C. Clean up the briquette in a hot state, and use an iron drill to poke a through hole with a diameter of 60mm in the filter plate, and use the through hole to...

Embodiment 3

[0043] Taking the processing of aluminum alloy ingots in the flat ingot workshop of Chongqing Fenghe Aluminum Co., Ltd. as an example, after the aluminum composition in the holding furnace is qualified, it is filtered by the liquid aluminum filter basin and sent to the casting machine for ingot casting. The filter plate matching the basin needs to be replaced frequently, the specific method is as follows:

[0044] A. After the last casting, use the crane to lift the top cover of the liquid aluminum filter basin, and use the slag knife to remove the scum remaining on the surface of the liquid aluminum above the filter plate;

[0045] B. Open the vent valve at the bottom of the aluminum liquid filter basin until no aluminum liquid leaks out, and empty the residual aluminum liquid above and below the filter plate;

[0046] C. Clean up the briquette in a hot state, and use an iron drill to poke a through hole with a diameter of 70mm in the filter plate, and use the through hole to...

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Abstract

The invention discloses a method for replacing a filter plate of an aluminum liquid filter basin. The method comprises the following steps that A, after casting of the filter plate to be replaced is finished, a top cover of the aluminum liquid filter basin is hung off, and dross on the surface of the aluminum liquid remained above the filter plate is cleaned; B, an emptying hole at the bottom of the aluminum liquid filter basin is opened, and residual aluminum liquid above and below the filter plate is drained; C, pressing blocks are removed in a hot state, a through hole with the diameter of50-70mm is formed in the filter plate, high-pressure air is input into the aluminum liquid filter basin through the through hole, and the temperature is forced to be decreased to 100 DEG C or below; D, the filter plate is hung out of the aluminum liquid filter basin, an inner cavity of the aluminum liquid filter basin is cleaned again, and the inner wall of the aluminum liquid filter basin is coated with a boron nitride releasing agent; E, a new filter plate is installed in the aluminum liquid filter basin, the pressing blocks are placed on the preheated filter plate, the top cover is closed,and an electric heating pipe is used for gradual heating and preheating; and F, 5-15 min before next casting, and open fire is used for baking the filter plate to 700 DEG C or above for filtering aluminum liquid in a heat insulation furnace in the casting process.

Description

technical field [0001] The invention relates to the field of aluminum processing, in particular to a method for replacing a filter plate of a liquid aluminum filter basin. Background technique [0002] When aluminum processing enterprises process ingots, the liquid aluminum in the holding furnace is qualified, filtered by the liquid aluminum filter basin, and then sent to the casting machine to be processed into ingots. [0003] The molten aluminum filter basin is mainly used to filter and remove the impurities of the molten aluminum in the holding furnace. There is a filter plate placed in the molten aluminum filter basin, and a compact is placed on the filter plate to prevent the filter plate from floating in the molten aluminum. After the last batch of casting is finished, the filter plate needs to be replaced to ensure the quality of the next batch of molten aluminum. [0004] At present, the operation method of replacing the filter plate in the liquid aluminum filter b...

Claims

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Application Information

Patent Timeline
29 Oct 2019
Publication
CN110385407A
IPC
B22D1/00; B22D43/00
CPC
B22D1/00; B22D43/004
Inventors
刘从江