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Recovery of aluminum ions and sulfuric acid from oxidation tank and energy-saving system and process of switching to pulse power supply

An oxidation tank and aluminum ion technology, applied in the field of aluminum alloy processing, to achieve the effect of increasing the oxidation current density, reducing the amount of dissolution, and shortening the oxidation time

Active Publication Date: 2018-07-06
FOSHAN SANSHUI XIONGYING INNOVATION CENT FOR ALUMINUM SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the defrosting system of this invention is set to only defrost the titanium exchanger, and in actual operation, the corresponding pipes, valves and pumps also need to be defrosted, so local adjustments must be made, and the defrosting system is set to defrost the entire cooling system. Frost, not just for titanium exchanger defrost

Method used

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  • Recovery of aluminum ions and sulfuric acid from oxidation tank and energy-saving system and process of switching to pulse power supply
  • Recovery of aluminum ions and sulfuric acid from oxidation tank and energy-saving system and process of switching to pulse power supply
  • Recovery of aluminum ions and sulfuric acid from oxidation tank and energy-saving system and process of switching to pulse power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0178] Embodiment 1 (anodizing solution cooling)

[0179] Close No. 3 valve 03, No. 9 valve 09, open No. 1 valve 01, No. 2 valve 02, No. 4 valve 04, No. 1 pump 4 and refrigerator 2, the oxidizing liquid cooled by refrigerator 2, from No. 4 valve 04 Enter the moving cathode cooling tube 11, blow directly to the surface of the aluminum alloy through the micropores of the moving cathode cooling tube 11, and quickly bring the oxidation heat at the interface of the oxide film into the oxidizing solution; the oxidizing solution carrying these heat overflows to the overflow tank 1- 1. Then, through No. 1 valve 01, No. 1 pump 4, and No. 2 valve 02, it enters the titanium exchanger 3 for refrigeration, and then passes through No. 4 valve 04 to circulate into the mobile cathode cooling pipe 11 to complete the oxidizing liquid cooling cycle.

Embodiment 2

[0180] Embodiment 2 (on-line recovery aluminum ammonium sulfate)

[0181] 1. Open No. 3 valve 03, close No. 2 valve 02, No. 9 valve 09, and turn 30M 3 After the oxidizing solution is pumped into the reaction tank 5, open the No. 2 valve 02, close the No. 3 valve 03; open the gas stirring No. 8 valve 08, and start stirring; add ammonium sulfate by 2.5 times the weight of the aluminum ion concentration, and stir while adding; After adding ammonium sulfate, continue to stir for 30 minutes and then close No. 8 valve 08, and leave standstill for 2 hours;

[0182] 2. Open the No. 5 valve 05, and the crystalline solid enters the centrifuge 6. Turn on the centrifuge 6 for solid-liquid separation; open the No. 10 valve 010 to repeatedly spray the solid in the centrifuge 6. When the pH value of the recovered liquid at the outlet of the centrifuge 6 is greater than 4.5, close the No. 10 valve 010 and stop spraying. Drench and centrifuge 6, reclaim aluminum ammonium sulfate by-product; ...

Embodiment 3

[0183] Embodiment 3 (on-line recovery oxidation solution)

[0184] Open the No. 6 valve 06, the No. 7 valve 07 and the No. 2 pump 8, and send the regenerated oxidation solution back to the oxidation tank 1 to complete the recovery of sulfuric acid;

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Abstract

The invention discloses an oxidation tank aluminum ion and sulfuric acid recovery and modification pulse power supply energy saving system and a process, and solves the problems of high temperature on an oxidation interface, high dissolving quantity of an oxide film and high energy oxidation consumption in traditional aluminum alloy oxidation. A modification pulse power supply energy saving device comprises an oxidation tank, a refrigerator, a titanium exchanger, a pump 1, an overflow tank and a pipe, and further comprises a movable oxidation polar plate device; the movable oxidation polar plate device includes multiple driving motors, a mobile positioning device, a mobile cathode cooling pipe, an anode electric conducting base and a cathode electric conducting device; and a communicated oxidation power supply of the anode electric conducting base is a frequency / amplitude-adjusted pulse direct-current oxidation power supply. A main system using the energy saving device further comprises an aluminum ion crystallization product recovery system, a sulfuric acid oxide liquid recovery system, a gas stirring system and a defrosting system. A recovery process using the energy saving main system comprises an oxide liquid circular cooling step, an aluminum ion crystallization product recovery step, a sulfuric acid oxide liquid recovery step, a gas stirring step and a defrosting step.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing, in particular to an energy-saving system and process for recovering aluminum ions and sulfuric acid from an oxidation tank and switching to a pulse power supply. Background technique [0002] After the aluminum alloy is anodized, an oxide film characterized by porosity is formed on the surface of the aluminum material, which must be sealed to ensure the physical and chemical properties of the anodized aluminum alloy products such as corrosion resistance, weather resistance, and wear resistance. , to obtain durable performance. [0003] Architectural aluminum anodizing solution refers to the bath solution used for anodizing aluminum alloy. When slotting, the concentration of H2SO4 in the anodic oxidation solution is between 160-200g / L, and there is no aluminum ion in the bath solution, which has a strong ability to dissolve the oxide film. Usually the anodizing time is 40-60 mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04C25D21/18C25D21/02C25D11/08C25D11/10
CPCC25D11/005C25D11/024C25D11/04C25D11/08C25D11/10C25D21/02C25D21/18
Inventor 熊晨凯熊映明
Owner FOSHAN SANSHUI XIONGYING INNOVATION CENT FOR ALUMINUM SURFACE TECH
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