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| Extraction of Sulphur - Frasch Process |
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| Sulphur has a low melting point of about
112oC - 115oC |
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| Mining of Sulphur - Frasch Process |
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 A Frasch pump consisting of a set of three concentric pipes is sunk deep into the sulphur bed |
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Super heated water at 1700C under pressure is pumped in through the outermost pipe |
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Sulphur in the sulphur bed melts due to its contact with hot water |
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Compressed air is pumped in through the inner most pipe |
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Molten sulphur mixed with water oozes out under pressure through the middle pipe |
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This molten sulphur is cooled and the water is allowed to evaporate |
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This produces 99.5% pure sulphur. |
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