Special MgO Used in Papermaking

   Affected by environmental factors, the paper mills transform and upgrade one after another. They start to change the former manufacturing technique. Therefore, the magnesium oxide is gaining more and more customers' favour in papermaking. In other words, the magnesium oxide manufacturers are gaining more and more customers' favour. Now, let us talk about the special magnesium oxide used in papermaking in detail.

   Choosing magnesium oxide to replace ammonium hydroxide apply to ammonium sulfite pulp. The ealkaline buffer should choose magnesium oxide. Various indexes of serous fluid can close to the level of ammonia water method. As buffer agent, the magnesium oxide made paper pulp to easy to bleach. What’s more, it can promote delignification in the process of steam. In addition, in the aspect of reducing pollutant discharge, it is help to protect the environment and low the cost.

  When bleach the paper pulp, magnesium oxide can be used in it. Compared with the traditional bleaching processes, magnesium oxide can be taken the place of the caustic soda. At the same time, the magnesium oxide can improve the viscosity, maintain the brightness of paper pulp and COD’s content and production cost. In the processes of bleached paper pulp through  hydrogen oxide, the magnesium oxide can replace caustic soda, and takes a part of reduce iron content and manganese ion content in serous fluid. In addition, it can improve the quality of serous fluid and avoid yellowing because of excess iron. In the meantime, the buffer action of  magnesium oxide is easy to control pH value. If use some inorganic complexing agents with it together, it can get s better effect.  The inorganic complexing agent includes phosphate, silicate and others.

   The magnesium oxide can act as wetter to improve pulp-deinking. The traditional sulfite process can be improved to magnesium sulfate size mixing technology. After improving, the lower quality wood can be used as raw material. The paper pulp can be used in printing News, and the waste heat and medicament can recycled. As in the following, for paper mills, it solves many ecological problems and economic problems that come from traditional sulfite process. Therefore, magnesium oxide manufacturer should pay more attention to this issue.