Miconceptions about Light Burning Powder

Many people have misunderstood some truth.

1. Magnesium oxide content and activity in a certain range is proportional to the amount of light burning powder, in fact, there is no such strict or reliable proportional relationship;

2. It is a serious mistake to think that "beyond this range, it will be inversely proportional". How much is the light burning powder?

3. Magnesium oxide is now misunderstood by some people as light-burning powder, which is also a serious mistake. It should be said that the main component of light-burning powder is magnesium oxide. Light-burning powder also contains impurities such as MgCO3, Mg (OH) 2, CaO, Fe2O3, Al2O3, SiO 2 and so on. Conversely, it is a serious mistake to say that magnesia is lightly burned powder.

4. With the innovation of the times and technology, the definitions of light-burning powder and magnesite have changed greatly. The magnesite is burned in an old-fashioned kiln with dark color and high impurity content. Most of the light-burning powder is also burned by magnesite. The difference is that the light-burning powder is fired in a reflective kiln at the present stage, and the impurity content is relatively small.

In addition, there is a deep misunderstanding that the content of f-CaO in light burning powder is determined by ethylene glycol extraction method. According to the experiment, ethylene glycol also absorbs magnesium oxide. With the different extraction time, the result will be visible. This involves the correction of some national standards, which coincides with some other articles. This proposal is very important and can be further demonstrated by experts.