This product is produced by refining, concentrating, dehydrating, drying, calcining, and molding magnesium hydroxide slurry, followed by firing it at a high temperature (above 1800 °C) in a rotary kiln.
We were the first in post-war Japan to successfully manufacture magnesia clinker using seawater, thanks to our proprietary seawater treatment technology, and we remain the only manufacturer in the country today.
Magnesia clinker is used as a basic refractory material, as well as in building materials and welding rods.