Mineral Resources
The Mineral Resources Business produces and sells advanced-function inorganic materials made with high-quality limestone. With a focus on calcia products such as quicklime and slaked lime, magnesia products made with unlimited supplies of sea water and quicklime, and fine material products made with calcia and magnesia, we produce and sell lifestyle products such as insect repellents and cosmetics and civil engineering-related products such as soil stabilizing materials.
Supplying high quality products from owned limestone mines
Limestone mined at our group's limestone mines is widely used as an industrial raw material for cement, ready-mixed concrete aggregate, steel, chemicals, etc., and is transformed into materials that support social infrastructure and support people's daily lives.
The Group produces high-quality products such as limestone for raw materials, limestone aggregate, and lime products, using limestone mined from mines as raw materials through thorough quality control. The Kyushu Plant boasts one of the largest production volumes of crushed limestone sand in Japan, and its stable production volume enables the Group to provide high-quality products to customers in western Japan and other areas.
Extensive product range, including one of the world’s largest production scales of magnesia clinker
In the calcia field, while demand for quicklime and limestone is steady, there has been an expansion of demand for neutral-based solidifying materials for soil stabilization. In the magnesia field, we are Japan’s only manufacturer of magnesia clinker, and we also boast Japan’s top share of magnesium hydroxide slurry.
Supporting advanced technology industries such as semiconductors and automotive components
Our fine material products, created with our proprietary technology, are being put to use in cutting-edge fields, such as ultrapure calcium carbonate for use in laminated chip ceramic capacitors and other high value-added semiconductor chips and basic magnesium sulfate for use in automotive plastics.
