High-purity arsenic deoxidizing device and method

Abstract

The invention provides a high-purity arsenic deoxidizing device which comprises a deoxidizing furnace and further comprises a glove box, a vacuum pump and a tail gas treatment device, wherein the glove box and the deoxidizing furnace share a bin door, the vacuum pump is connected with the deoxidizing furnace through an air flow pipeline, and the tail gas treatment device is connected with the vacuum pump through an air flow pipeline. A dust remover is arranged between the deoxidizing furnace and the vacuum pump. The deoxidizing furnace comprises a furnace body, a heating sleeve arranged outside the furnace body in a wrapping mode and an air inlet pipe. The two sides of the furnace body comprise the first bin door and a second bin door which can be opened and closed, and the first bin dooris shared by the deoxidizing furnace and the glove box. The dust remover is directly connected with the tail gas treatment device through another air flow pipeline. By adopting the high-purity arsenicdeoxidizing device and a high-purity arsenic deoxidizing method, the analysis result of prepared high-purity arsenic shows that after deoxidizing, the oxygen content of the high-purity arsenic is smaller than 1 ppm, the product requirement is met, and the prepared deoxidized high-purity arsenic is packed in the glove box and presents the bright metallic luster in color.

Description

technical field [0001] The invention relates to the field of high-purity arsenic preparation, in particular to a high-purity arsenic deoxidation device and method. Background technique [0002] High-purity arsenic is the main raw material for the synthesis of gallium arsenide compounds, indium arsenide compounds, arsenic selenide compounds, etc. Widely used in integrated circuits, photovoltaic solar power generation technology, Hall elements and other fields. In recent years, with the development of high-tech industries, the application fields of high-purity arsenic have become increasingly extensive. [0003] According to the purity, high-purity arsenic can be divided into 6N, 7N, and 7N+ products. With the continuous improvement of purity, the performance is getting better and better, but high-purity arsenic has one thing in common - it is very easy to be oxidized, and the higher the purity , the easier it is to be oxidized. This makes the high-purity arsenic have the r...

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Problems solved by technology

Once the high-purity arsenic product is oxidized, its surface will become dark and black, which will affect the performance of the product, require reprocessing to increase costs, and even cause the product to be scrapped

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