Device and method for continuously producing silver powder for solar energy

A technology of solar energy and silver powder is applied in the field of material science to achieve the effects of convenient operation, high purity and low cost

Inactive Publication Date: 2013-08-07
SUZHOU HAILI METAL POWDER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The industrial preparation of silver powder for the silver paste used in the front grid electrode printing of solar crystalline silicon cells has become a bottleneck that seriously affects the development of the domestic crystalline silicon solar cell industry.

Method used

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  • Device and method for continuously producing silver powder for solar energy
  • Device and method for continuously producing silver powder for solar energy
  • Device and method for continuously producing silver powder for solar energy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Device for continuous production of silver powder for solar energy, see figure 1 , including a first liquid distribution tank 1, a second liquid distribution tank 2, and a container 3, the liquid outlet of the first liquid distribution tank 1 is connected with one end of the first pipeline 4, and the outlet of the second liquid distribution tank 2 The liquid port is connected with one end of the second pipeline 5, the liquid inlet of the container 3 is connected with one end of the third pipeline 6, the other end of the first pipeline 4, the second pipeline 5 and the third pipeline 6 are connected, and the first pipeline A pipeline 4 is provided with a first solenoid valve 7, a first water bath device 10 and a first flow meter 13, and the second pipeline 5 is provided with a second solenoid valve 8, a second water bath device 11 and a second flow meter 14 , the third pipeline 6 is provided with a third solenoid valve 9 and a third water bath device 12 in sequence. It a...

Embodiment 2

[0025] Utilize the device described in embodiment 1 to continuously produce silver powder for solar energy, the steps are as follows:

[0026] (1) Configure the hydrazine hydrate polyvinylpyrrolidone aqueous solution in the first liquid mixing tank, wherein the concentration of hydrazine hydrate is 7g / L, the concentration of polyvinylpyrrolidone is 0.2g / L, and adjust the temperature of the hydrazine hydrate polyvinylpyrrolidone aqueous solution to 10°C;

[0027] (2) Mix silver nitrate polyvinylpyrrolidone aqueous solution in the second liquid mixing tank, wherein the concentration of silver nitrate is 50g / L, the concentration of polyvinylpyrrolidone is 1.5g / L, adjust the pH to 8 with ammonia water, and adjust the hydration Hydrazine polyvinylpyrrolidone aqueous solution temperature to 10 ° C;

[0028] (3) Control the temperature of the first water bath device, the second water bath device and the third water bath device to 10°C, open the first solenoid valve, the second solen...

Embodiment 3

[0031] Utilize the device described in embodiment 1 to continuously produce silver powder for solar energy, the steps are as follows:

[0032] (1) Configure the hydrazine hydrate polyvinylpyrrolidone aqueous solution in the first liquid mixing tank, wherein the concentration of hydrazine hydrate is 28g / L, the concentration of polyvinylpyrrolidone is 0.8g / L, and adjust the temperature of the hydrazine hydrate polyvinylpyrrolidone aqueous solution to 25°C;

[0033] (2) Mix silver nitrate polyvinylpyrrolidone aqueous solution in the second liquid mixing tank, wherein the concentration of silver nitrate is 200g / L, the concentration of polyvinylpyrrolidone is 6g / L, adjust the pH to 13 with ammonia water and sodium hydroxide, and Adjust the temperature of the hydrazine hydrate polyvinylpyrrolidone aqueous solution to 25°C;

[0034] (3) Control the temperature of the first water bath device, the second water bath device and the third water bath device to 25°C, open the first solenoi...

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Abstract

The invention provides a device for continuously producing silver powder for solar energy. The device comprises a first liquid dispensing tank, a second liquid dispensing tank and a container, wherein a liquid outlet of the first liquid dispensing tank is connected to one end of a first pipeline; a liquid outlet of the second liquid dispensing tank is connected to one end of a second pipeline; a liquid inlet of the container is connected to one end of a third pipeline; the other ends of the first pipeline, the second pipeline and the third pipeline are connected; a first electromagnetic valve, a first water bath device and a first flowmeter are arranged on the first pipeline; a second electromagnetic valve, a second water bath device and a second flowmeter are arranged on the second pipeline; and a third electromagnetic valve and a third water bath device are arranged on the third pipeline sequentially. The device is simple in structure, low in cost and convenient to operate, so that the silver powder with stable quality, high purity degree, high dispersibility and tap density and low specific surface area can be obtained.

Description

technical field [0001] The invention belongs to the field of material science, in particular to a device for continuously producing silver powder for solar energy, and also relates to a method for continuously producing silver powder for solar energy. Background technique [0002] The preparation of silver powder with high purity, high dispersion, high tap density and low specific surface area is one of the research focuses of current material science. [0003] In the electronics industry, silver powder is widely used in the manufacture of various conductive pastes for printed circuits and internal and external electrodes of electronic components. Due to the development of microelectronics technology, printed circuits and electronic components are gradually developing towards precision and miniaturization, which requires the corresponding electronic paste to change accordingly. , high dispersion, high tap density, and the particle size distribution of silver powder is also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 高玲凡张晓东
Owner SUZHOU HAILI METAL POWDER MATERIAL
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