The Role of Magnesium Oxide In Paper Manufacturing

Magnesium oxide neutralizes acidity, stabilizes pH and improves pulp purity. It improves paper strength, density and environmentally friendly bleaching.

In paper production, acidic substances and pollutants in pulp compromise product quality and equipment durability. Magnesium oxide (MgO), an alkaline additive, addresses these challenges by neutralizing acids, regulating pH, and purifying pulp. Its application enhances paper density, strength, and bleaching efficiency while reducing environmental impact. This highlights MgO's critical role in optimizing paper quality and sustainable manufacturing processes.

Neutralize acidic substances and remove pollution

Pulp may contain acidic substances and pollutants during the production process, which not only affect the quality of pulp,but also may cause corrosion to production equipment. Magnesium oxide, as an alkaline substance,can effectively neutralize these acidic substances, reduce the acidity of pulp,and remove pollutants, ensuring the purity and stability of pulp.

Adjust pH value to optimize pulp properties

The pH value of pulp is one of the key factors affecting paper properties. By adding an appropriate amount of magnesium oxide,the pH value of pulp can be effectively adjusted to achieve optimal production conditions. A suitable pH value helps to improve the density and strength of paper, making it more durable and tough.

Increase paper density and improve strength

The addition of magnesium oxide can increase the density of pulp,making the paper more compact. This helps to improve the strength of the paper, making it less likely to break or deform when subjected to external forces. Meanwhile, the increase in density can also improve the ink absorption and printing performance of paper, making printed materials clearer and more vivid.

As a bleaching aid

High purity magnesium oxide can be used as a bleaching aid in the bleaching process of pulp. It can help improve the whiteness and brightness of pulp,while reducing chemical oxygen demand and harmful substance emissions.

Conclusion

Magnesium oxide proves indispensable in modern papermaking by neutralizing acidity, stabilizing pH, and improving pulp purity. It enhances paper strength, density, and printability while supporting eco-friendly bleaching. As a multifunctional additive, MgO balances performance, cost-efficiency, and sustainability, solidifying its value in advancing paper industry standards.