Kōrero: Superphosphate

Sulfuric acid coolers

Sulfuric acid coolers

A first stage in the manufacture of superphosphate is to produce sulfuric acid. Elemental sulfur, from Canada, is treated with acid. The reaction generates heat, and the resulting sulfuric acid must be cooled. Shown here are early cooling tanks. The acid is then mixed with rock phosphate to produce superphosphate and the hot, sticky product is then dried.

Te whakamahi i tēnei tūemi

Archives New Zealand - Te Rua Mahara o te Kāwanatanga
Reference: AANR 6329 26 DA 32786

Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Te tuhi tohutoro mō tēnei whārangi:

Arthur Duncan, 'Superphosphate - Making superphosphate', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/photograph/15565/sulfuric-acid-coolers (accessed 30 September 2020)

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