Kōrero: Superphosphate

Superphosphate manufacture

Superphosphate manufacture

The basic ingredients of superphosphate are rock phosphate and sulfuric acid. Sulfuric acid is made by converting elemental sulfur to sulfur trioxide, which, with added water, is dissolved in sulfuric acid to produce more acid. Finely ground rock phosphate and sulfuric acid are mixed in a den to produce superphosphate, which is then granulated and dried. Other nutrients may be added at this stage.

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Te Ara - The Encyclopedia of New Zealand

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Te tuhi tohutoro mō tēnei whārangi:

Arthur Duncan, 'Superphosphate - Making superphosphate', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/diagram/15566/superphosphate-manufacture (accessed 9 March 2021)

He kōrero nā Arthur Duncan, i tāngia i te 24 Nov 2008