Heavy-burnt magnesia

As for the current situation of domestic magnesia supply shortage, foreign refractory enterprises and downstream users are also very concerned. They have written to ask when this situation will end, whether the magnesia price is expected to fall within the year, or whether the supply shortage will increase with the coming of winter. These questions can only be answered by time. However, industry insiders believe that with the further standardization of environmental protection governance, the number of enterprises that meet the standard to resume production, and the continuous production of magnesia projects in other regions except Liaoning, the shortage of supply may be alleviated, but there is little hope of price falling in the short term.

There are two methods for making magnesia chrome brick: burning oil immersed magnesia carbon brick and unburned magnesia carbon brick. The former brick making process is more complex and rarely used. Here we only briefly describe the characteristics of the brick making process of unburned magnesia carbon brick.

Preparation of mud. It is important to select the critical size of the seed. Fine aggregate particles can reduce the open porosity and enhance the oxidation resistance. However, small aggregate particles will increase the closed porosity and reduce the bulk density. In addition, the fine MgO aggregate is easy to react with graphite, and the particle size of 1 mm is generally considered to be appropriate. Under the condition of high pressure molding equipment, the particle size of magnesia tends to be fine. In order to improve the density of refractory brick, many manufacturers adopt the particle diameter of more than 5mm. Magnesia chrome brick manufacturer