JPH0726227B2 - Electrodeposited copper powder desorption device and method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeposited copper powder desorption apparatus and method, and more particularly to an electrodeposited copper powder for recovering and removing copper ions in a solution as copper powder by electrolysis. Desorption device and method.

[0002]

2. Description of the Related Art Conventionally, as a method for desorbing electrodeposited copper powder, a scraper, a scraping rod, etc., which are represented by a method called Moeius method, are intermittently or continuously used as an anode and a cathode. The main method was mechanically scraping by inserting into the electrolytic solution between the cathodes or moving horizontally.

As another method, there is also a method of continuously impacting the cathode beam supporting the cathode with a hammer mounted spirally along the rotation axis to remove the copper powder adhering to the cathode. .

[0004]

However, in the former Moybis method, since a scraper or the like is mechanically inserted between the anode and cathode electrodes, the desorption is sure and the short circuit due to the growth of dendrites is surely made. However, since the distance between the electrodes cannot be narrowed, the voltage drop due to the liquid resistance cannot be reduced, and therefore the possibility of reducing the power consumption rate is low. Further, the equipment becomes complicated, and there is a possibility that troubles such as a short circuit may occur due to the scraper coming into contact with both the anode and the cathode at the same time.

Further, in the latter method, since the cathode itself does not move, even if an impact is applied to the cathode beam, the impact transmission from the cathode beam to the cathode is relatively poor, which causes a problem of desorption. .

[0006] Therefore, an object of the present invention is to provide a novel electrodeposition copper powder desorption device and method capable of shortening the distance between electrodes and imparting a large impact to the cathode.

[0007]

In order to achieve the above-mentioned object, the present invention relates to electrodeposition copper powder desorption for depositing copper powder on the cathode by electrolysis and desorbing the deposited copper powder from the cathode. In the apparatus, an electrolytic cell containing a cathode and an anode, a cathode beam supporting the cathode, and a supporting means for rotatably supporting one end of the cathode beam on one edge of the upper part of the electrolytic cell, Supporting / falling means for supporting and dropping the other end of the cathode beam, and another edge of the upper part of the electrolytic cell for receiving the other end of the falling cathode beam when the other end of the cathode beam falls The electrodeposition copper powder desorption device is characterized in that it has a beam pedestal arranged in.

Further, regarding the method, the present invention is an electrodeposition copper powder desorption method in which copper powder is deposited on the cathode by electrolysis and the deposited copper powder is desorbed from the cathode, and the cathode is held at a supporting position. Electrodeposition characterized in that copper powder is deposited on the cathode in this state, one side of the cathode is dropped, and a shock is generated by catching the falling cathode, and the copper powder attached to the cathode is desorbed by the shock. The copper powder desorption method is adopted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described with reference to the accompanying drawings. FIG. 1 is a perspective view of an electrodeposition copper powder desorption device of the present invention, and FIG. 2 is a front view showing a cathode used in the electrodeposition copper powder desorption device and members related to the cathode.

First, referring to FIG. 1, the entire electrodeposited copper powder desorbing device of the present invention will be described in brief. In the tank 12, a large number of anode electrode plates 14 (hereinafter simply referred to as anodes) and cathode electrode plates 16 (hereinafter simply referred to as cathodes) are alternately arranged vertically. The anode 14 is electrically connected to an anode bus bar 18, and power is supplied through the bus bar 18. Similarly, as will be described later in detail, the cathode 16 is also electrically connected to the cathode bus bar 20 via a conductor and a cathode beam, and is supplied with power through the conductor and the cathode bus bar 20.
The cathode 16 is supported by a cathode beam 17, and one end of the cathode beam 17 is supported by a piston rod 22 a of an air cylinder 22.

The electrolytic cell 12 is provided with a discharge pipe for discharging Cl ₂ + anolyte and a discharge pipe for discharging catholyte, and the bottom of the electrolytic cell 12 further contains copper ions. An inlet for supplying the liquid supply liquid and an outlet for discharging the recovery liquid containing the copper powder are provided.

Next, the main part of the electrodeposited copper powder desorption device of the present invention will be described in detail with reference to FIG. 2. The cathode 16 is supported by the cathode beam 17 by the two legs 17a of the cathode beam 17. ing. One end of the cathode beam 17 is connected to the cathode bus bar 20 by an elastic conductor 21 formed by stacking thin copper plates, for example, so that the cathode beam 17 can rotate about this one end. It has become. The other end of the cathode beam has a piston rod 22a of an air cylinder 22 (see FIG. 1) supported above by a supporting / falling means, for example, a supporting rod 24.
Supported by. The air cylinder 22 has a piston rod 22a for removing the copper powder adhering to the cathode 16 and a supporting position (shown by a solid line) for supporting the cathode beam and the cathode while depositing the copper powder on the cathode 16. As shown by an arrow A, it is moved to and from a drop position (shown by a dotted line) for dropping.

If an air cylinder is used for the means for supporting / falling the cathode beam 17, that is, the means for supporting / falling the cathode 16, the air type control is preferable because the apparatus can be simplified and less trouble occurs. It is a thing. Note that the falling speed of the piston rod 22a must be at least equal to or higher than the natural falling speed of the cathode.

A beam pedestal 26 is attached to one of the upper edges of the electrolytic cell 12 to receive the falling end of the cathode beam 17 when the end of the cathode beam 17 falls. An impact plate 28 is attached on top of 26.

With this construction, when the copper powder is deposited on the cathode 16 and then the air cylinder 22 is actuated to move the piston rod 22a downward momentarily, the cathode beam 17 becomes While rotating around one end, the other end naturally falls, and the cathode 16 also naturally falls accordingly. Then, the end portion of the falling cathode beam strongly collides with the impact plate 28 on the beam pedestal 26 to generate an impact. This impact is transmitted to the cathode 16 via the cathode beam 17, and the copper powder attached to the cathode 16 is desorbed from the cathode 16, that is, separated.

Next, a model test conducted to confirm the effect of the present invention will be described. The test was conducted using a simple water model test device. As the cathode, the cathode actually used in the decoppering electrolysis apparatus was used, and a magnet tape having a width of 1 cm was adhered in the vertical direction to approximately the center of both surfaces of the cathode to adhere nickel powder. The width of the cathode is 770 mm and the height is 9
It was 50 mm.

The test was conducted in the following procedure. First, the cathode was gently lowered into a water tank, the upper part of the cathode beam supporting the cathode was hit with a hammer 5 times to collect the dropped nickel powder, and the weight of the collected nickel powder was measured. In addition, the one end of the cathode beam is 7 cm
It was dropped, the dropped nickel powder was collected, and its weight was measured. The measurement was performed three times, and the average value of the measured values was obtained. The conditions other than the desorption method were the same.

The test results showed that the weight of the dropped nickel powder was 1.6 g when dropped with a hammer, and the weight of the dropped nickel powder was 5.5 g when the cathode was dropped. From this, it was clarified that when the cathode is dropped, far better results can be obtained than when hitting with a hammer.

Next, an experimental example using the electrodeposition copper powder desorbing apparatus and method of the present invention will be described. Copper powder was collected using a mixed solution of nickel chloride and copper chloride as a supply liquid. The electrolysis conditions are shown below.

Feed liquid composition Ni 190 to 240 g / l Cu 40 to 50 g / l (pH 1 temperature 60 C °) Feed liquid flow rate 35 ml / A · Hr anode Insoluble anode (Ti mesh coated with ruthenium oxide) Size: 740 mm × 940mm Number of sheets: 10 Cathode Ti plate Size: 770mm × 950mm Number of sheets: 9 Current 4500A Cathode drop cycle 1/3 min

Under the above conditions, electrolysis was continuously performed for about 5 months, but no desorption failure occurred.

[0022]

As described in detail above, the present invention is
The shock is caused by the free fall of the cathode beam, and therefore
Since it is applied to the cathode by spontaneous fall of the cathode, a large impact can be applied to the cathode, so that the copper powder can be surely removed, and it is necessary to insert the copper powder between the electrodes. Since no scraper or the like is used, the distance between the electrodes can be reduced, the power consumption rate can be reduced, and the productivity can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an electrodeposited copper powder desorption device of the present invention.

FIG. 2 is a front view showing a cathode used in an electrodeposition copper powder desorption device and members related to the cathode.

[Explanation of symbols]

 10 Electrodeposited Copper Powder Detachment Device 12 Electrolyzer 14 Anode 16 Cathode 17 Cathode Beam 21 Conductor 22 Air Cylinder 22a Piston Rod 26 Beam Cage 28 Impact Plate

Claims (6)

[Claims] 1. In an electrodeposition copper powder desorption device for depositing copper powder on a cathode by electrolysis and desorbing the deposited copper powder from the cathode, an electrolytic cell accommodating the cathode and the anode and the cathode are supported. The cathode beam and one end of the cathode beam are rotatably attached to the upper part of the electrolytic cell.
Supporting means for supporting the one edge portion, supporting and dropping means for supporting and dropping the other end portion of the cathode beam, and receiving the other end portion of the falling cathode beam when the other end portion of the cathode beam falls And a beam pedestal arranged on the other edge of the upper part of the electrolytic cell. 2. The electrodeposited copper powder releasing apparatus according to claim 1, wherein the supporting means is made of an elastic conductor that connects one end of the cathode beam and the bus bar of the cathode. Desorption device. 3. The electrodeposited copper powder desorbing device according to claim 1, wherein the supporting and dropping means moves between a supporting position for supporting the other end of the cathode beam and a dropping position for dropping the cathode beam. Electrodeposited copper powder desorption device, characterized in that it consists of an air cylinder with a piston rod that 4. An electrodeposition copper powder desorption method for depositing copper powder on a cathode by electrolysis and desorbing the deposited copper powder from the cathode, wherein the copper powder is deposited on the cathode while the cathode is held at a supporting position. Is deposited, one side of the cathode is dropped, a shock is generated by receiving the falling cathode, and the copper powder adhering to the cathode is desorbed by the shock, and the electrodeposited copper powder desorption method. 5. The method for removing electrodeposited copper powder according to claim 4, wherein the cathode is supported by the cathode beam, one end of the cathode beam is dropped, and the impact generated by the drop is transmitted to the cathode through the cathode beam. A method for removing electrodeposited copper powder, which is characterized in that 6. The method for removing electrodeposited copper powder according to claim 5, wherein dropping one end of the cathode beam is performed by dropping a support position supporting one end of the cathode beam and dropping the cathode beam. A method for removing electrodeposited copper powder, which is performed by using an air cylinder having a piston rod that moves between a position and a position.