Test method for lightly burned magnesia powder

Magnesium oxide content was determined by EDTA complexometric titration, with triethanolamine as masking agent, when pH was 10, lightly burned magnesium oxide powder chrome black T as indicator, and 0.02mol/LEDTA complexometric titration was used to measure the magnesium and calcium content first. , minus the calcium content. In the Russian standard, EDTA complexometric titration method is used. In the solution after calcium determination, add hydrochloric acid to dissolve the generated magnesium hydroxide, and then add ammonia water to adjust to the required pH value. Acid chrome blue black is used as the indicator, and 0.1 mol /LEDTA for complexometric titration. Light Burnt Magnesium Ball

Light-burned magnesia is also known as caustic bitter earth, activated magnesia. It is a light-burned magnesia obtained from natural magnesite ore, brucite and magnesium hydroxide Mg(OH)2 extracted from seawater or brine, and calcined at a temperature of 700~1000℃.