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Aluminum alloy fluorine-free and cod-free three-in-one flat-gloss pre-treatment chemical recovery system

A recovery system and a three-in-one technology, applied in the field of aluminum alloy fluorine-free and COD-free three-in-one flat-light pre-treatment agent recovery system, can solve the problems of worsening the difficulty of wastewater treatment, large amount of agents, and long time consumption, etc., to achieve the solution of fluorine pollution and COD exceed the standard, improve the surface quality and reduce the production cost

Active Publication Date: 2019-05-24
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

[0020] 2. The process is complicated and there are many slots
There are a total of 10 slots in front of the oxidation tank, 3 working tanks, and 7 washing tanks, which are too complicated;
[0021] 3. Low efficacy
It takes a long time, which seriously restricts the production capacity of the oxidation line;
[0022] 4. There are many working slots, and the consumption of chemicals is large
For 1#, 4#, 7#, 11#, 14# working tanks, the total chemical consumption is 100-120 kg / ton of material. In order to treat the wastewater containing these chemicals, the aluminum material factory will spend more cost;
[0023] 5. The washing tanks are independent of each other, and the water consumption is large
11 washing tanks, two independent, divided into 5 groups, 5 water inlets, 5 outlets, the total water consumption is more than 20.0 tons per ton of material, in addition to the cost of water, the treatment and discharge of these waters require additional pay the cost;
[0024] 6. The 1# tank contains fluorine, which hinders the reuse of wastewater;
[0025] 7. Tanks 1# and 7# contain ammonia nitrogen, and tank 4# contains COD, which makes the difficulty of wastewater treatment worse.
With such a configuration, excessive water saving will inevitably cause the functional tanks to intersect with each other
[0028] The present invention is aimed at the disadvantages of complex traditional alkali etching process, too many working tanks and washing tanks, low work efficiency, large dosage of chemicals, large waste water discharge, high cost of treating fluorine and ammonia nitrogen, too low efficiency, and high waste rate. A specially designed set of brand-new aluminum alloy flat light treatment process

Method used

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  • Aluminum alloy fluorine-free and cod-free three-in-one flat-gloss pre-treatment chemical recovery system
  • Aluminum alloy fluorine-free and cod-free three-in-one flat-gloss pre-treatment chemical recovery system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Example group 1-production of three-in-one flat material

[0084] The formula and working index of each tank are:

[0085] 1# Three-in-one flat light tank: Ferric chloride, hydrogen peroxide, nitric acid, hydrochloric acid and nonylphenol polyoxyethylene ether are added as shown in Table 1, the balance is water; working temperature is normal temperature, processing time is 5 minutes, trickle 1 minute;

[0086] category

Example 1-1

Example 1-2

Example 1-3

Ferric chloride

2g / L

3g / L

4g / L

Hydrogen peroxide (50%)

10g / L

10g / L

10g / L

Nitric acid

80g / L

80g / L

80g / L

hydrochloric acid

65g / L

65g / L

65g / L

Polyoxyethylene nonylphenol ether

0.001g / L

0.001g / L

0.001g / L

[0087] Table 1

[0088] 2# No-flow washing tank: 1 minute of water washing, 30 seconds of dripping;

[0089] 3# Non-flowing washing tank: 1 minute of water washing, 30 seconds of dripping;

[0090] 4# No-flow washing tank: 1 minute of water washing, dripping for 30 seconds;

[0091] The follow-up pro...

Embodiment 2

[0093] Example 2 group-production of three-in-one flat material

[0094] The formula and working index of each tank are:

[0095] 1# Three-in-one flat tank: iron bromide, hydrogen peroxide, nitric acid, hydrochloric acid and nonylphenol polyoxyethylene ether are added as shown in Table 2, the balance is water; working temperature is normal temperature, treatment time is 5 minutes, trickle 1 minute;

[0096] category

Example 2-1

Example 2-2

Iron bromide

3g / L

3g / L

Hydrogen peroxide (50%)

8g / L

12g / L

Nitric acid

80g / L

80g / L

hydrochloric acid

65g / L

65g / L

Polyoxyethylene nonylphenol ether

0.001g / L

0.001g / L

[0097] Table 2

[0098] 2# No-flow washing tank: 1 minute of water washing, 30 seconds of dripping;

[0099] 3# Non-flowing washing tank: 1 minute of water washing, 30 seconds of dripping;

[0100] 4# No-flow washing tank: 1 minute of water washing, dripping for 30 seconds;

[0101] The follow-up process is carried out according to the existing standard alkaline ...

Embodiment 3

[0103] Example 3 Group-Three-in-one flat material production

[0104] The formula and working index of each tank are:

[0105] 1# Three-in-one flat light tank: Ferric chloride, hydrogen peroxide, nitric acid, hydrochloric acid and nonylphenol polyoxyethylene ether are added as shown in Table 3, the balance is water; the working temperature is normal temperature, the processing time is 5 minutes, trickle 1 minute;

[0106] category

Example 3-1

Example 3-2

Example 3-3

Example 3-4

Ferric chloride

3g / L

3g / L

3g / L

3g / L

Hydrogen peroxide (50%)

10g / L

10g / L

10g / L

10g / L

Nitric acid

70g / L

90g / L

80g / L

80g / L

hydrochloric acid

65g / L

65g / L

55g / L

75g / L

Polyoxyethylene nonylphenol ether

0.001g / L

0.001g / L

0.001g / L

0.001g / L

[0107] table 3

[0108] 2# No-flow washing tank: 1 minute of water washing, 30 seconds of dripping;

[0109] 3# Non-flowing washing tank: 1 minute of water washing, 30 seconds of dripping;

[0110] 4# No-flow washing tank: 1 minute of water wash...

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PUM

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Abstract

Aluminum alloy fluorine-free and COD-free three-in-one plain glass pretreatment drug recovery system, comprises a three-in-one plain glass tank and a non-flow tank subsystem. The non-flow tank subsystem is arranged in reverse series arrangement, a begin end of water flow is provided with a water inlet, a terminal outlet is connected to a water replenishing port of the three-in-one plain glass tank through a one-way valve device. The aluminum alloy fluorine-free and COD-free three-in-one plain glass pretreatment drug recovery system retains and reuses the drug, and reduces the unnecessary waste of the drug.

Description

Technical field [0001] The invention relates to the technical field of surface treatment of aluminum materials, in particular to an aluminum alloy fluorine-free and COD-free three-in-one smoothing pretreatment agent recovery system. Background technique [0002] The pre-treatment process of aluminum alloy has been used for more than 100 years. Alkaline etching has the disadvantages of high aluminum consumption, high alkali consumption, excessive alkali slag, difficult process control, many defects, high production cost, COD content, and large environmental pollution, and it has long been recognized by the industry. Standard alkali etching tank layout figure 2 As shown, 1# degreasing tank, 4# alkali corrosion tank, 7# neutralization tank, 11# oxidation tank and 14# sealing tank are working tanks. Each working tank is equipped with two washing tanks, plus flowing water to wash the waiting tank , The pre-oxidation treatment requires 10 slots, of which 4# alkali etching tank is the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F1/20C23G1/12C23F1/46
CPCC23F1/20C23F1/46C23G1/125
Inventor 熊映明熊晨凯
Owner FOSHAN SANSHUI XIONGYING INNOVATION CENT FOR ALUMINUM SURFACE TECH
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