Magnesium oxide is used instead of ammonia to be used in ammonium sulfite pulping. The results of the study show that magnesium oxide is selected as the alkaline buffer, the various indicators of the slurry can reach levels similar to those of the ammonia method. Using magnesium oxide as a buffering agent makes the pulp easy to bleach, which can promote delignification during the steaming process, reduce pollutant emissions, help protect the environment, reduce costs. Talc Factory
Magnesium hydroxide can be used in pulp bleaching. Compared with the traditional bleaching process, magnesium hydroxide can replace caustic soda. At the same time, magnesium hydroxide can improve the viscosity of the slurry, maintain the brightness of the pulp, reduce the COD content production costs.
In the process of bleaching pulp with hydrogen peroxide, magnesium oxide magnesium hydroxide can replace caustic soda to reduce the content of iron manganese ions in the slurry. It can also avoid yellowing due to excess iron improve the quality of the slurry. . At the same time, magnesium oxide magnesium hydroxide have a buffering effect, it is easy to control the pH value. If it is used with inorganic complexing agents such as phosphate silicate, the effect will be better.
Magnesium oxide can act as a humectant to improve pulp deinking operations. The traditional sulfite pulping process is improved into a magnesium sulfite pulping process. After the improvement, lower quality wood can be used as raw material. The produced pulp can be used to make news printing paper, the chemicals used are equal to waste heat. Can be recycled. In this way, many ecological economic problems in traditional sulfite pulping operations have been solved for paper mills. The magnesium agent resource can be magnesium oxide magnesium hydroxide.
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