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How is the grade of brown corundum divided?
Time：
2023-07-10
Brown corundum is generally divided into three grades according to its alumina content, so the alumina content is an important target for product quality. Generally, the alumina content of brown corundum is 95-97%. The higher the content, the greater the hardness of the product and the better the quality.
The determination of alumina content in brown corundum powder is mainly EDTA volumetric method. When measuring alumina content, this method first tests the content of other impurities in brown corundum, and obtains the content of alumina by calculation. The method is more complicated and the process is very complicated. It is cumbersome, and the obtained values also have certain deviations. Now it is also possible to use EDTA complexation titration of amygdalic acid concealed titanium to determine alumina content. This method can directly test the alumina content without requiring other data, which not only reduces the testing process, but also obtains the data together. It is also more accurate.
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Zibo Jingshan Corundum Co., Ltd.
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Contact: Mr. Zhang
Phone: +86-18653320447
Tel: +86-533-5610339
Address: South of Xizhou Village, Zhaili Town, Zichuan District, Zibo City, Shandong Province, China