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Gypsum

Summary

Gypsum is calcium sulfate.

Application

It is used in cement and plasterboard for building construction.

Demand

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Price

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Trade

Imports

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Exports

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Production

World production is around 100 million tonnes.

Lake MacLeod Gypsum, a division of Rio Tinto, will produce 1.5 million tonnes per year of gypsum from 1997, from a deposit that contains 6 billion tonnes of gypsum, to represent around 1.5 per cent of world production.

Technology

Manufacture involves leaching out salt using ground water to achieve 100 ppm salt content.

Raw Materials

Water

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