Lime is indispensable in the pulp and paper industry for its roles in alkaline pulping, chemical recovery, water treatment, and paper coating. Its use improves process efficiency, enhances paper quality, and supports environmental sustainability through effective resource utilization and wastewater management.
MARKET NEEDS
In paper making, lime is essential for regenerating chemicals used in the pulping method. It is used where it reacts with green liquor (sodium carbonate) to produce white liquor (sodium hydroxide). This white liquor is then reused to break down wood chips into pulp. Additionally, lime is used to adjust the pH levels during the papermaking process and as a filler to improve the brightness, opacity, and smoothness of the final paper product.
SOLUTION
In the paper industry, high-calcium lime, dolomitic lime, and hydrated lime are used. High-calcium lime is favored for its reactivity in the pulping process, dolomitic lime enhances causticizing and equipment protection, and hydrated lime is used for pH adjustment and as a slurry. These types optimize chemical recovery and improve paper quality.
