EXTRACTION OF SULPHUR BY FRASCH PROCESS

Sulphur occurs about 200 metres underground.

The soil structure in these areas is usually weak and can easily cave in.

• Sulphur is extracted by drilling three concentric /round pipes of diameter of ratios 2:8: 18 centimetres.
• Superheated water at 170 degrees centigrade and 10 atmosphere pressure is forced through the outermost pipe.
• The superheated water melts the sulphur because the melting point of sulphur is lower at about at about 115 degrees centigrade.
• A compressed air at 15 atmospheres is forced /pumped through the innermost pipe.
• The hot air forces the molten sulphur up the middle pipe where it is collected and solidifies in a large tank.
•  It is about 99% pure.