1. In fact, there is no such strict or reliable proportional relationship between the content of MgO and its activity
2. If you think that "beyond the scope of this paragraph, it will be inversely proportional" is a more serious mistake!
3. It is also a serious mistake for some people to misunderstand MgO as light burned powder. It should be said that the main component of light burned powder is MgO, which also contains MgCO3, Mg (OH) 2, Cao, Fe2O3, Al2O3, SiO2 and other impurities. On the other hand, it is a serious mistake to say that magnesium oxide is light burned powder.
4. With the innovation of the times and technology, the definition of light burned powder and magnesite has changed greatly. Magnesite is fired by old-fashioned earth kiln, with dark color and high impurity content. Light burned powder is mostly fired by magnesite. The difference is that light burned powder is fired by reflection kiln at present, and the impurity content is relatively less. The qualified light magnesia powder should meet the standards of WB / T 1019-2002 light magnesia for magnesite products and Hg / T 2573-2006 industrial light magnesia. It's impossible to meet these standards.
Light burned magnesium ball
In addition, there is a deep misunderstanding, using glycol extraction method to determine the content of f-CaO in light calcined powder. According to the experiment, glycol also absorbs magnesium oxide. With the different extraction time, it will have a visible impact on the results. This involves the correction of some national standards, which also coincides with some other articles. This proposal is very important, and experts can further demonstrate it.