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Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.

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Acid Plant Database  December 12, 2020

Owner Ravensdown Fertiliser Co-operative Limited

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Location Dunedin
Ravensbourne Road

New Zealand
Background Formerly
- Kempthorne Prosser and Co.

Ravensdown Fertiliser Co-operative Limited was established after a series of takeovers during 1977/78 by the amalgamation of the five fertiliser works formerly owned by Kempthorne Prosser & Co Ltd and Dominion Fertiliser Company.  Sixty per cent of its shares were held by Ravensdown Corporation Ltd, a farmer-owned co-operative whose members were farmers in the regions supplied by our three works. In 1987 Ravensdown merged with East Coast Fertiliser Co., a co-operative that owned and operated a single fertiliser works at Napier.  In July 1997 the New Plymouth operation of Farmers Fertiliser was purchased by Ravensdown.

Website www.ravensdown.co.nz
Plant Ravensbourne Plant
Coordinates 45° 52' 10" S, 170° 32' 24" E
Type of Plant Sulphur Burning
Gas Source Elemental Sulphur - Bulk Solid
Plant Capacity x MTPD
SA/DA 4 bed SA
Status Operating
Year Built -
Technology -
Contractor -
Remarks -
General Ravensdown is the largest supplier of fertiliser in New Zealand, directly supplying more than half of all the fertiliser used in New Zealand agriculture.  We are 100% owned by New Zealand farmers, providing them with sound technical advice and a comprehensive range of key farming inputs, all at the lowest sustainable cost.  Less than a decade ago we were mainly a solid NPKS fertiliser supplier. Today we offer a comprehensive range of inputs – from soil testing through to anthelmintics, from lime through to agrochemicals – all backed by highly skilled technical specialists.  We use the ‘ground-up’ approach.  This involves working with farmers to test their soils, herbage and animals and then using the expertise of our Field Officers and technical representatives to analyse and interpret the results to provide recommendations to meet the exact needs of the farm.  It is about adding value to our farmers’ agri-businesses and helping them maximise their productivity.  The ground-up approach encompasses research, analysis, highly qualified field staff, an extensive product range, a Customer Centre which is always available to take queries and orders and a national distribution network.
References -
News October 6, 2020 - A "sulphur flash" at Ravensdown which left five people in Dunedin Hospital happened while a piece of old equipment was being removed.  Ravensdown communications manager Gareth Richards said it was too early to say what caused the incident, which happened in a store at its Ravensbourne site.  "We’ll be investigating what happened, but at the moment it looks like residual dust ignited during the removal of a decades-old hopper in a rock store.  "This didn’t cause flames or a loud noise, but did cause a small cloud of dust and elevated sulphur dioxide in the affected building."   A visiting contractor was taken to Dunedin Hospital for assessment following the incident, while four others, a contractor and three Ravensdown staff, were taken to hospital as a precaution.  "All are in good spirits and their wellbeing is foremost in our thoughts,"  he said.  Later, four of the people were discharged from hospital while one, who was "up and around talking", remained for observation, Mr Richards said.  A few hours later, the fifth person was discharged and was "resting at home and feeling a whole lot better".  He thanked emergency services for responding to the incident quickly and praised professional response of Ravensdown staff on site.  The suggestion from Fire and Emergency New Zealand (Fenz) that it related to welding was incorrect.  A Fenz spokesman said crews from Roslyn and Willowbank arrived at 10am.  The incident was initially reported as a medical incident, but that changed to a report of a possible explosion shortly after.  "There was a small explosion," he said.  There was no fire when crews arrived.  Five people working there were transported to hospital, not due to the explosion, but due to the inhalation of sulphur dioxide, he said.  "The scene has been left with management from Ravensdown and Worksafe."  A St John spokesman said it was alerted at 9.47am and two ambulances and a manager were sent to the scene.  Crews treated five patients, one in a moderate condition and four in a minor condition.  All patients had been transported to Dunedin Hospital.  A reporter at the scene said two Fire and Emergency New Zealand appliances attended.  One of two St John ambulances at the scene arrived and drove into the plant after 10.20 am.


MTPD - Metric Tonne per Day           STPD - Short Ton per Day
MTPA - Metric Tonne per Annum      STPA - Short Ton per Annum
SA - Single Absorption
DA - Double Absorption

* Coordinates can be used to locate plant on Google Earth