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A cleaning method for high-purity gallium container

A container and high-purity technology, applied in liquid cleaning methods, chemical instruments and methods, cleaning methods and utensils, etc., can solve problems that affect the recycling of containers, cannot achieve gallium recovery, and low specificity, and achieve low cost , simple cleaning, and the effect of reducing surface energy

Active Publication Date: 2017-04-12
桐乡乐维新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of the existing cleaning methods use mechanical friction, and some use surfactants and other substances to reduce surface energy, but most of these methods cannot realize the recovery of gallium, resulting in waste. The main reason is that the cleaning methods and cleaning agents are aimed at high-purity gallium and The specificity of the high-purity gallium container is not high, it is easy to cause pollution, and the cleaning agent will remain on the container, making it difficult to clean thoroughly to meet the purity requirements of high-purity gallium, which affects the recycling of the container

Method used

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  • A cleaning method for high-purity gallium container

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] To clean the container of high-purity gallium products, the steps are as follows: (1) Put the polypropylene plastic bucket with high-purity gallium products in high-purity water with a resistivity greater than 18.2MΩ·cm and heat to 80°C, soak the container for 15 minutes, and use a shaker to clean the container. Vibration makes the gallium melt into a liquid state. At this time, a small amount of liquid gallium will be detached from the container. The detached high-purity gallium can still be used as a high-purity gallium finished product after being dried; (2) use electronically pure sodium hydroxide, Prepare a 2mol / L solution, heat it to 80°C, soak the container for 10 minutes, and shake it with a shaker for 10 minutes at the same time. At this time, all the liquid gallium will automatically separate from the plastic container and gather into large droplets. Pour it out of the container and collect Liquid gallium can be used as raw material gallium; (3) Rinse the conta...

Embodiment 2

[0029] A method for cleaning a plastic beaker containing high-purity gallium intermediates, the steps are as follows: (1) use high-purity water with a resistance of 18.2MΩ·m to heat to 60°C, soak the container for 25 minutes, shake the shaker, so that the gallium melts into a liquid state, and the detached After the high-purity gallium is dried, it can be returned to the same production process as the original high-purity gallium intermediate product; (2) Prepare a 1mol / L solution with electronically pure potassium hydroxide, heat it to 80°C, and soak the container 10 minutes, shake it with a shaker for 10 minutes at the same time, all the gallium will be separated from the plastic container automatically, gather into large liquid droplets, and all will be poured out of the container smoothly, and the liquid gallium collected at this time can be used as raw material gallium; Rinse the container without gallium adhesion with high-purity water with a rate of 18.2MΩ·cm; (4) prepar...

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Abstract

The invention discloses a method for cleaning a high-purity gallium container. The method is characterized by comprising the following steps of: (1) heating high-purity water to temperature of 60 to 80 DEG C, immersing the container for 15 to 25 minutes, and oscillating a table so that liquid gallium is formed, wherein a small amount of liquid gallium can be separated from the container; (2) heating by using electronically pure inorganic aqueous alkali with high alkalinity to temperature of 60 to 80 DEG C, immersing the container for 5 to 15 minutes, and oscillating for 10 to 15 minutes at the same time; (3) flushing the container without the gallium by using the high-purity water; (4) completely immersing the flushed container into the electronically pure inorganic aqueous alkali for 0.5 to 2 minutes; (5) flushing the container again by using the high-purity water; and (6) drying the container for later use. By the method, the high-purity gallium is recycled, so the production cost is saved; the method is simple and feasible; and the container can be completely cleaned, so that the container can be reused.

Description

technical field [0001] The invention relates to a cleaning method for a high-purity gallium container. Background technique [0002] High-purity gallium is a liquid metal at room temperature. In the production process, a large number of plastic containers are generally used for packaging and turnover. Liquid gallium has a very high surface tension and is easily adsorbed on various plastics. After liquid gallium is infiltrated in various plastics, it is difficult to clean and peel off. Generally speaking, about 100g of metal will be infiltrated and adhered to the wall of each square container. However, high-purity gallium is a rare and precious metal with very little content in the earth and high value. The metal adhered to the wall of the device will cause a certain amount of waste. At the same time, if the wall is not cleaned for a long time, the high-purity gallium on it will gradually oxidize and pollute and affect the production process. [0003] The purpose of cleanin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B08B3/04B08B3/08B08B3/10B08B3/12
Inventor 康云飞乔文钟晓露
Owner 桐乡乐维新材料有限公司
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