Basalt

MOGF6-0001

Basalt is natural material-stone, which belongs to such materials, whose lifetime has exceeded not only centuries, but also millenniums. But its hardness and difficult processability limited its wider expansion in constructional sector. As late as in 20th century the stone features much wider application in industry and civil engineering with development of petrurgy, i.e. processing of non-metallic ores by melting and casting. Basalt is continuously melted in pit-type furnace heated by natural gas at approx. temperature 1280°C. At 1200°C it is cast (shaped) into metal or sand moulds, and after removing it is stored into continuous cooling tunnel furnaces till cooling after 16-21 hours, where it re-crystallizes and gains its end-use properties.