The reburning line changes are irreversible line shrinkage or expansion --- reburned magnesia

The refractory products fired from the re-burned magnesia are heated again to the specified temperature, kept for a certain period of time, and after cooling to room temperature, the residual contraction or expansion of the 97 fused magnesia is expressed as a percentage of the original length. It is an important technical indicator of product quality. The size of the reburning line changes indicates the degree of high-temperature volume stability of the product. The minus sign "-" means contraction, and the positive sign "+" means expansion, also known as residual contraction or expansion. The reburning line change is irreversible line shrinkage or expansion, which is caused by the physical and chemical changes that have not reached equilibrium during the firing process of the product. When it is at high temperature, these physical and chemical changes will still continue.

The refractory products fired from re-burned magnesia are heated again to the specified temperature, kept for a certain period of time, and after cooling to room temperature, the remaining shrinkage or expansion expressed as a percentage of the original length. It is an important technical indicator of product quality. The size of the reburning line changes indicates the degree of high-temperature volume stability of the product. The negative sign "-" means contraction, and the positive sign "+" means expansion, also known as residual contraction or expansion. The reburning line change is an irreversible line shrinkage or expansion, which is caused by the fact that the physical and chemical changes of the product have not reached equilibrium during the firing process. When it is at high temperature, these physical and chemical changes will still continue.