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Aluminum alloy oxidation liquid recovery and cooling equipment crystal elimination system and process

A technology of cooling equipment and cleaning system, applied in the field of aluminum product processing, can solve problems such as waste of tap water, and achieve the effects of reducing labor intensity, eliminating the risk of high-level operations, and high recovery rate

Active Publication Date: 2018-03-30
FOSHAN SANSHUI XIONGYING INNOVATION CENT FOR ALUMINUM SURFACE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, tap water is used to defrost the ice machine, which wastes a lot of tap water

Method used

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  • Aluminum alloy oxidation liquid recovery and cooling equipment crystal elimination system and process
  • Aluminum alloy oxidation liquid recovery and cooling equipment crystal elimination system and process
  • Aluminum alloy oxidation liquid recovery and cooling equipment crystal elimination system and process

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Embodiment Construction

[0068] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0069] 1. Theoretical basis for the recovery of aluminum ions and sulfuric acid in the anodizing solution

[0070] When the aluminum alloy is oxidized, according to formula (3), part of the oxide film is dissolved, and about 4Kg / T (400m2) of aluminum is dissolved into the sulfuric acid oxidation solution. Ammonium sulfate is added to this oxidizing solution, and the following reaction takes place:

[0071] Al 2 (SO 4 ) 3 +(NH 4 ) 2 SO 4 +12H 2 O=2NH 4 Al(SO 4 ) 2 12H 2 O↓ (5)

[0072] Under the conditions of 160-200g / L sulfuric acid, containing aluminum and ammonium ions, ammonium aluminum sulfate NH 4 Al(SO 4 ) 2 12H 2 O crystallizes out, and the amount of residual aluminum ions is related to the crystallization temperature and time.

[0073] 2. Quantitative analysis of experimental results

[0074]...

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Abstract

The invention discloses an aluminum alloy oxidation liquid recovery and cooling equipment crystal elimination system which comprises an oxidation liquid collection system, an oxidation liquid treatment system, an oxidation liquid separation system, a washing agent interception system and a cooling equipment crystal elimination system. The invention further discloses an aluminum alloy oxidation liquid recovery and cooling equipment crystal elimination process. The process comprises the steps of oxidation liquid collection, oxidation liquid treatment, oxidation liquid separation, oxidation liquid recovery, recrystallization recovery, washing agent interception and cooling equipment crystal elimination. The system and the process are high in oxidation liquid recovery rate; low-position agentadding is achieved; the large-scale industrial production requirement can be met; and water resources are saved.

Description

technical field [0001] The invention relates to the technical field of aluminum product processing, in particular to an aluminum alloy oxidation liquid recovery and cooling equipment crystallization removal system and process. Background technique [0002] The aluminum alloy anodizing line slot layout in the prior art is as attached figure 1 shown. In the 10# tank anodic oxidation solution, the aluminum alloy with conductive surface is placed on the anode. Under the action of an external electric field, the process of forming an oxide film on the surface is called anodic oxidation, and the film produced is an anodic oxidation film or an electrochemical conversion film. The electrochemical oxide film is different from the natural oxide film. The oxide film has a stacked cell structure, each cell is a hexagonal cylinder, and its top is an arc-shaped and hexagonal star-shaped pore truncated surface. The oxide film has a two-layer structure, and the layer close to the base met...

Claims

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Application Information

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IPC IPC(8): C25D11/08C25D21/18
Inventor 熊映明
Owner FOSHAN SANSHUI XIONGYING INNOVATION CENT FOR ALUMINUM SURFACE TECH
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