Multi-path electroplating liquid iron removal device and multi-path electroplating liquid iron removal method

An electroplating solution, multi-channel technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc. question

Inactive Publication Date: 2020-02-11
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, ion exchange resin iron removal has the advantages of simple treatment and low operating cost, but there are problems such as short service life and troublesome resin regeneration; current iron removal has complicated operation and harsh process conditions; chemical addition of materials to remove iron has good treatment effect, but the treatment The time and cost cannot be adjusted, and the added materials include ammonia, PAM, diatomaceous earth, etc., which are easy to mix into the electroplating solution and affect the electroplating

Method used

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  • Multi-path electroplating liquid iron removal device and multi-path electroplating liquid iron removal method
  • Multi-path electroplating liquid iron removal device and multi-path electroplating liquid iron removal method
  • Multi-path electroplating liquid iron removal device and multi-path electroplating liquid iron removal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The present invention provides such Figure 1-3 A multi-channel electroplating solution iron removal device shown includes:

[0043] The electroplating solution treatment assembly 10, the electroplating solution treatment assembly 10 includes a treatment tank 11, a manhole 12, a first motor 13, a first rotating shaft 131, a first stirring blade 132, a plating solution inlet pipe 14, an alkali solution inlet pipe 15, The first exhaust pipeline 16, the oxidant liquid filling pipe 17, the gas compressor 18, the pH meter 19, the thermometer 110 and the liquid level gauge 111;

[0044] Zinc dissolving assembly 20, described dissolving zinc assembly 20 is installed on one side of described electroplating solution treatment assembly 10, and described zinc dissolving assembly 20 comprises zinc dissolving tank 21, second exhaust pipe 22, zinc dissolving bucket 23, first A filter 24, a first liquid inlet pipe 25 and a second liquid inlet pipe 26, the outlet end of the first filt...

experiment example 1

[0082] The present invention also provides a comparison of the experimental results of Example 1, Comparative Example 1 and Comparative Example 2, and the comparison results are shown in Table 1:

[0083] Table 1

[0084]

[0085] It is found through comparison that the single electroplating solution treatment cycle of embodiment one is 4-8h / time, and all electroplating solutions in the electroplating circulation tank can be processed in 3-5 days, which is high-speed processing;

[0086] Comparative example one single electroplating zinc solution treatment cycle is 12-24h / time, 7-10 days can make all the electroplating solutions in the electroplating circulation tank be processed, which is medium speed treatment;

[0087] Comparative Example 2 The single electroplating solution treatment cycle is 2.5-3d / time, and all the electroplating solutions in the electroplating circulation tank can be processed in 25-30 days and months, which is a low-speed treatment.

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Abstract

The invention discloses a multi-path electroplating liquid iron removal device and a multi-path electroplating liquid iron removal method. The device comprises: an electroplating liquid treatment assembly, wherein the electroplating liquid treatment assembly comprises a treatment tank, a manhole, a first motor, a first rotating shaft, a first stirring blade, a plating liquid inlet pipe, an alkaliliquid inlet pipe, a first gas discharge pipeline, an oxidant liquid adding pipe, a gas compressor, a PH meter, a thermometer and a liquid level meter; and a zinc dissolving assembly mounted on one side of the electroplating liquid treatment assembly. According to the invention, Fe(OH)2 and Zn(OH)2 cannot be simultaneously precipitated at the same pH value while Fe(OH)3 can form insoluble precipitates after being aged, and the precipitation pool can keep high PH value for a long time by reducing the zinc dissolving speed (the precipitation pool can slowly update the electroplating liquid), sothat Fe<2+> can easily form insoluble precipitates so as to remove the Fe<2+> in the components of the electroplating liquid, and other impurities or pollutants are not brought into the plating liquidafter treatment.

Description

technical field [0001] The invention belongs to the technical field of electroplating solution treatment, and in particular relates to a multi-channel iron removal device and method for electroplating solution. Background technique [0002] Due to its good performance and appearance, electro-galvanized steel sheets are widely used in industries such as automobiles, home appliances, and high-end building materials. During the production process of the continuous electrogalvanizing unit, the impurity content (Fe2+, Fe3+, etc.) in the electroplating solution directly affects the electroplating quality. Due to reasons such as corrosion of the plated parts, the content of Fe2+ and Fe3+ ions in the electroplating bath gradually accumulates. If the long-term Fe2+ concentration in the electro-galvanized bath is too high, it will first reduce the corrosion resistance of the electro-galvanized sheet, and secondly, the thickness of the coating surface will appear. Quality defects such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/66C02F101/20C02F103/16
CPCC02F1/722C02F1/66C02F2101/20C02F2103/16C02F2201/007C02F2201/002
Inventor 陈莹莹文珂颜飞顾训雷黄道兵江鹤群王安辉胡庭乐
Owner 武汉钢铁有限公司
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