enhancing paper production in thailand with ground calcium carbonate
thailand stands as a leading producer and exporter of paper and pulp in southeast asia. the industry, concentrated in provinces like kanchanaburi and rachaburi, relies heavily on calcium carbonate as both a filler and a coating pigment to produce bright, smooth, and high-quality paper. historically, much of this calcium carbonate was imported or produced using simple, less efficient methods. a leading thailand-based company has changed this dynamic by commissioning a state-of-the-art calcium grinding mill, specifically designed for the wet and dry grinding needs of the paper sector.
the new facility, located strategically near a high-purity limestone quarry, is built around a large-capacity calcium grinding mill. it boasts an impressive production rate of twenty-two tonnes per hour. this scale allows it to act as a central hub, supplying numerous paper mills within a two-hundred-kilometer radius via a dedicated fleet of bulk tanker trucks. the investment represents a significant vertical integration move, securing a critical raw material for the nation's core manufacturing sector.
the mill is configured to produce a dual-purpose product. for paper filling, it produces a grade with a fineness of two micrometres, which is used to fill the gaps between cellulose fibers, resulting in a brighter, smoother, and more printable sheet. for coating applications, an even finer grade with a d97 of one micrometre is produced. this ultra-fine slurry, when mixed with binders, is applied as a thin layer on the paper's surface to create a brilliant, high-gloss finish ideal for magazines and high-end brochures. the plant utilizes a wet grinding process for these ultra-fine grades, ensuring perfect particle dispersion and stability in the final slurry delivered to the paper mills.
the grinding process for such fine materials is complex. the raw calcium carbonate is mixed with water and dispersing agents before being fed into specialized mills filled with small ceramic beads. the intense shear and impact forces generated by the rotating agitators reduce the particles to sub-micron levels. sophisticated online sensors constantly monitor the particle size, ensuring that the final product meets the paper maker's exacting specifications. the entire process is highly automated, requiring only a handful of highly skilled operators to oversee the control systems.
this investment has had a transformative effect on the thai paper industry. local paper mills now enjoy a reliable, high-quality, and cost-effective supply of a critical input. this has strengthened their competitive position in the global market, where they compete with producers from north america and europe. the success of this plant underscores the vital role of the calcium grinding mill in supporting and advancing thailand's position as a regional industrial powerhouse. the company is now looking to expand its product line to serve the growing paint and adhesive industries in the country.
