Electrolysis tin dissolving device, system and method for supplementing stannous ions in electrotinning solution

A technology of divalent tin ions and electroplating tin, applied in the field of metallurgy, can solve the problems of troublesome fixation of ion exchange membrane, unsuitable combination of multiple sets of cylindrical electrolytic cells, increase in cost, etc. The effect of reducing the loss of tin

Inactive Publication Date: 2016-08-31
CHINA IRON & STEEL RES INST GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, a cylindrical electrolytic cell and an electrodialysis device are used. The disadvantage is that the cylindrical electrolytic cell is not suitable for multiple sets of combinations, and the fixing of the ion exchange membrane is also troublesome. At the same time, the addition of the electrodialysis device increases additional costs.

Method used

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  • Electrolysis tin dissolving device, system and method for supplementing stannous ions in electrotinning solution
  • Electrolysis tin dissolving device, system and method for supplementing stannous ions in electrotinning solution
  • Electrolysis tin dissolving device, system and method for supplementing stannous ions in electrotinning solution

Examples

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Embodiment 1

[0099] Adopt the electrolytic dissolving tin device of the present invention and technology thereof to carry out electrolytic dissolving tin, adopt U.S. DuPont N117CS type ion-exchange membrane, at 2A / dm 2 The data obtained from the experiment under the electrolytic current are shown in Table 1:

[0100] Table 1: The content of each component of electrolytic tin

[0101]

Embodiment 2

[0103] Adopt the electrolytic tin dissolving device of the present invention and its technique to carry out electrolytic tin dissolving, adopt Japanese Asahi Glass HSF type hydrogen ion selective permeation membrane, at 2A / dm 2 The data obtained from the experiment under the electrolytic current are shown in Table 2:

[0104] Table 2: The content of each component of electrolytic tin

[0105]

Embodiment 3

[0107] Adopt the electrolytic dissolving tin device of the present invention and technology thereof to carry out electrolytic dissolving tin, adopt the domestic Kerun membrane Nepem4110 type ion exchange membrane, at 2A / dm 2 The data obtained from the experiment under the electrolytic current are shown in Table 3:

[0108] Table 3: The content of each component of electrolytic tin

[0109]

[0110] It can be known from Examples 1, 2, and 3: at 2A / dm 2 When the three kinds of ion exchange membranes are used for electrolysis under the current density, the loss rate of tin is lower than 10%, which reduces the loss of tin and further reduces the production cost.

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Abstract

The invention belongs to the technical field of metallurgy, and particularly relates to an electrolysis tin dissolving device, system and method for supplementing stannous ions in an electrotinning solution. The electrolysis tin dissolving device (1) is of a plate-frame structure, and comprises a cathode plate (2), a feed electrode (3), a direct-current source (7), a plurality of cathode chambers (20) and a plurality of anode chambers (15). The cathode chambers (20) and the anode chambers (15) are arranged alternately. An ion exchange film (5) is arranged between each cathode chamber (20) and the corresponding anode chamber (15) adjacent to the cathode chamber (20). A hydrogen outlet (21) is formed in the top of each cathode chamber (20). Each anode chamber (15) is provided with a tin particle adding opening (6), a supplementing tin solution outlet (18) and a circulation solution inlet (17). When Sn+2 ions in the electrotinning solution are supplemented, the amount of generated tin mud can be reduced, and the production cost can be lowered.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to an electrolytic tin-dissolving device for replenishing divalent tin ions in an electrolytic tin plating solution, a system and a method thereof. Background technique [0002] Since the application of the insoluble anodic tin plating process, maintaining the concentration of divalent tin ions in the electroplating bath has been a challenging problem for tinning lines for many years. During the electroplating period, tin ions are continuously consumed in the electroplating tank, so it needs to be replenished in time to maintain Consistent plating process. Many efforts have been made around the world to solve the supplementary problem of divalent tin ions, which is to add a tin-dissolving device. There are three main tin-dissolving processes, which are the traditional chemical reaction tin-dissolving method, oxygenated tin-dissolving method and electrolytic dissolving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D21/14C25D21/18C25D17/00
CPCC25D21/14C25D17/00C25D21/18
Inventor 刘军梅郭振英杨绿
Owner CHINA IRON & STEEL RES INST GRP
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