In magnesium oxide specifications, there are six commonly used physical and chemical indicators. Loss on lgnition is one of it, which has several features that other specifications like silicon, calcium, iron, aluminum cannot be compared.
The first, controllability. That is to say, after mineral being put into the furnace, we can adjust the content of it by control the calcination of calorific value and the sintering time. Therefore, you can more easily to control magnesium oxide products required different by ignition loss.
The second, the relationship with the ratio of magnesium oxide. The content of silicon, calcium, iron, aluminum are determined by ore, loss on lgnition is different from it, and inversely proportional to the content of MGO. For example, the kind of magnesium oxide 93%, that is meaning, the content of loss on lgnition is 7%, then directly calculate the magnesium oxide content is 86%. If the content of loss on lgnition increased 2% by storage or other reasons, the content of magnesium must fall off 2%.
The third, the coagulation time of magnesium oxide products. Under certain conditions, the coagulation time of magnesium oxide is particularly fast, sometimes it is opposite, even appear not-solidification phenomenon. In this case, you can look for reasons from two aspects, the one is operating temperature, the other one is loss on lgnition.
In conclusion, the higher content of loss on lgnition of magnesium oxide, the faster solidification rate.