Refractory materials such as firebrick, castable refractories and ceramic fibre, are used for insulation. Insulating refractories include calcium silicate materials, kaolin, and zirconia. They include substances such as silica, alumina, and fire clay brick refractories. Traditional industries are textiles, refractories, ceramics, etc.. One of the biggest refractory plant, manufacturing shaped and monolithic refractories. Refractories are inorganic, nonmetallic, porous, and heterogeneous. Acheson received 70 patents relating to abrasives, graphite products, reduction of oxides, and refractories. The major uses of speciality aluminium oxides are in refractories, ceramics, polishing and abrasive applications. Magnesium metal and magnesia consumption (i.e. in refractories), currently obtained from seawater, will increase. Thus it is used in refractories, cermets and laboratory crucibles. It is used in refractories, foundry dressings, pesticides, ceramics and rubber. It later grew through acquisitions in refractories, clays, ceramic bodies and technical ceramics. They are encountered in the manufacture of refractories and cements. Frit in the form of alumino-silicate can be used in glaze-free continuous casting refractories. Established in 1950 it focuses on the area of glass, ceramics, mica, refractories etc.