A recycling process of aluminum profile mold waste liquid
A technology of waste liquid recovery and aluminum profile, applied in the field of aluminum profile mold waste liquid recovery process, can solve the problems of environmental pollution, resource waste, etc., achieve high-efficiency utilization rate, and realize the effect of recycling.
Active Publication Date: 2022-06-17
广东新合铝业新兴有限公司
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Problems solved by technology
[0003] In the existing technology, carbon dioxide is added to the aluminum waste liquid to react to form a solid-liquid mixture of aluminum hydroxide, sodium carbonate, and sodium bicarbonate. After the workers extract solid aluminum hydroxide, sodium carbonate, and sodium bicarbonate, the mixture is mostly not It will be used here, and the remaining mixed solution contains a large amount of sodium ions such as sodium carbonate and sodium bicarbonate, and directly discarding it will lead to a waste of resources
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[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0040] In the specific implementation process, such as figure 1 and figure 2 As shown in the figure, an aluminum profile mold waste liquid recovery process is completed by a stirring multi-layer filtering device. The main feature of the present invention is that the stirring device and the filtering device of the present invention are selected. In the embodiment, only this product is used. A preferred preparation process is described, and the preparation process comprises the following steps:
[0041]1), use the first liquid pump 8 to drive the waste liquid generated in the mold alkali washing tank into the reaction layer 1 through the pipeline;
[0042] 2), feed carbon dioxide gas, fully contact and react the liquid inside the reaction layer 1 with carbon dioxide gas through stirring mechanism 7, so that sodium carbonate, sodium bicarbonate, aluminum ...
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The invention provides a recovery process of aluminum profile mold waste liquid, which is completed by a stirring multi-layer filter device. The preparation process includes the following steps: 1) using the first liquid The pump is pumped into the reaction layer through the pipeline; 2), the carbon dioxide gas is introduced, and the liquid in the reaction layer is fully contacted with the carbon dioxide gas through the stirring mechanism and reacts to produce sodium carbonate, sodium bicarbonate, and aluminum hydroxide solids mixed with sodium carbonate and sodium bicarbonate; the sodium carbonate, sodium bicarbonate and aluminum hydroxide solids left in the reaction layer are sent out and collected by the collection mechanism; the invention improves the filtering effect by multi-stage filtration of the waste liquid of the aluminum profile mold , and the recycling of sodium ions is improved, and the reaction process is accelerated through the stirring mechanism to make the reaction more complete.
Description
technical field [0001] The invention relates to the technical field of aluminum profile mold waste liquid recycling, in particular to a process for recycling aluminum profile mold waste liquid. Background technique [0002] At the end of a variety or working cycle of the aluminum extrusion die, the aluminum solidified in the die cavity needs to be corroded with sodium hydroxide solution, commonly known as die alkali cleaning. After the mold is alkaline washed, the sodium hydroxide solution contains sodium aluminate and alloy components such as oxides, complexes, hydroxides, etc. The composition is relatively complex. This liquid is called waste lye, which is strongly alkaline and has strong corrosive and unstable. Direct discharge will cause serious environmental pollution. [0003] In the prior art, after carbon dioxide is added to the aluminum waste liquid, the reaction generates a solid-liquid mixture of aluminum hydroxide, sodium carbonate and sodium bicarbonate. It w...
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IPC IPC(8): B21C35/06
CPCB21C35/06Y02P70/10
Inventor 李其真
Owner 广东新合铝业新兴有限公司