Downer
HomeMinesWAPinjarra Alumina Refinery
CNR DAVEY MARMION STREETS BOORAGOON WA , 6954
P: 08 9316 5111 F: 08 9316 5228
www.alcoa.com

PINJARRA ALUMINA REFINERY

  • Information
  • Jobs
  • Owner
  • Map
  • Major Contractor
  • What is mined
About:

The Pinjarra alumina refinery is located near the town of Pinjarra, a 30 minutes drive from the popular coastal town of Mandurah, south of Perth in Western Australia. It is a major employer in the district employing more than 1,000 people. The Pinjarra refinery is one of the largest alumina refineries in the world being able to refine 4.2 million tonnes of alumina a year.

The Pinjarra Alumina Refinery Uses the Bayer Process

 

The Pinjarra alumina refinery is owned by Alcoa which uses a process known as the Bayer process to refine alumina from bauxite ore. The Bayer process was devised by Karl Bayer of the Bayer Chemical Company and is commonly used in alumina refineries throughout the world.

Pinjarra Alumina Refinery Benefits From the Cogeneration Partnership With Alinta

Alcoa has entered into a co-generation partnership with power producing company Alinta to improve and create a more cost efficient and environmentally friendly operation of the Pinjarra alumina refinery. This cogeneration partnership involves the installation of two combined cycle gas fired turbine units to create efficient power generation as well as providing for the Pinjarra refinery's low pressure steam requirements. The first gas turbine was constructed at the Pinjarra refinery in 2004. Alinta sells off the excess electric power it produces into the regional grid.

The Bayer Processing System Used at the Pinjarra Alumina Refinery Requires Four Steps

Alcoa operate a triple refinery system in Western Australia, all located over a 200 kilometre stretch from Perth to Bunbury in the south. The refineries are at Wagerup, Kwinana and Pinjarra. The Bayer refining process used requires four stages to be undertaken to extract alumina from bauxite ore. These steps; digestion, clarification, precipitation and calcination are carried out as follows:

Digestion – Digestion involves the red coloured finely ground bauxite being mixed into a solution of hot caustic soda. This dissolves the alumina from the bauxite. It takes six tonnes of bauxite to produce two tonnes of alumina.
Clarification – Clarification requires the insolubles in the solution, such as mud and sand, to be settled before being filtered out. This leaves a solution of dissolved alumina hydrate.
Precipitation – At this stage the liquid alumina hydrate is cooled in open top tanks where seed crystals are added. This causes the alumina to crystallise out of the solution.
Calcination – This last stage in the process requires the alumina hydrate to be washed and heated until the water is removed. This leaves behind pure dry alumina as a fine white powder. The powder is cooled and placed into storage before it is taken to aluminium smelters for further processing.

Alumina is a white granular substance, much like table salt but not as coarse, its technical term is aluminium oxide. Aluminium doesn't occur in nature as a metal, it has to be refined from bauxite ore in its oxide state and then smelted.

The Pinjarra alumina refinery was commissioned in 1972 and expanded to contain five units by 1976. The adjoining power house consists of back pressure turbines and medium pressure boilers that provide the refinery's processing power and heating needs. In 2006 the cogeneration plant created an environment where the converting of gas into electricity proved to be 75 percent efficient compared to the previous coal fired plant that was between 30 and 35 percent efficient. The plant produces two outputs, steam and electricity from the gas input. It produces 140 megawatts of electricity and 240 tonnes an hour of steam. The new cogeneration infrastructure allowed Alcoa to retire a number of its old inefficient boilers.


Alcoa

Alcoas Australian current operations include bauxite mining in WA alumina refineries, aluminium recycling plant in NSW and aluminium smelting in VIC. Alcoa produces almost 45% of Australia's alumina and over 25% of Australia's aluminium.Alcoa is one of Australia's largest exporters contributing...........read more

ADDRESS

Alcoa
Cnr Davey Marmion Streets
Booragoon, WA 6954

PO Box 252
Applecross, WA 6953

OTHER INFO

Phone08 9316 5111
fax08 9316 5228

View Alcoa Page

We Currently have No Jobs Specified for

PINJARRA ALUMINA REFINERY

Visit Jobs Section

No Information listed at this time ......

Following are the resources mined at Pinjarra Alumina Refinery

Y Fronts teaser banner MiningLink prefered resume writers Civil Link Banner
Boilermakers
Boilermakers required for various roles for fixed plant and mobile equipment shutdowns

Riggers Dido


Operator Maintainer
Bis Industries requires an Operator Maintainer to join our operations at Karara, this is offered FIFO on 2:1 roster from Perth, come join the team!

Mc Truck Drivers Gunnedah
Bis Industries is seeking MC Drivers commencing at Gunnedah on a Monday to Friday roster and every other Saturday as required.

Mc Drivers Goldfields
Seeking expressions of interest from experienced MC Drivers, in consideration for multiple opportunities across our operations in the Goldfields.

Prelude Arrives In Australia
Shell Australia's Prelude floating liquefied natural gas (FLNG) facility has arrived in Australian waters this week after its 5,800km journey from the Samsung Heavy Industries shipyard in Geoje, ....

Australia's Largest Testing Rig Unveiled In Rocky
Siemens has invested $5 million into the Rockhampton Service Centre, which unveiled this week, Australia’s largest and most advanced gearbox load test rig for mining, wind power and other core ....

Dinosaur Find At Qld Mine Site
Palaeontologists and volunteers will work over the next month excavating and studying 30,000-year-old dinosaur bones at the South Walker Creek mine in Central Queensland. The team of eight people, ....

Black Thoated Finch Puts New Coal Mine At Risk
The controversial black throated finch is back to cause problems for Adani with a fresh legal challenge over the planned Carmichael coalmine. New advice has found the federal environment ....

Monadelphous Awarded $55M In Contracts
Monadelphous Group Limited announced on Wednesday it has been awarded a number of new work packages with a combined value of approximately $55 million. The engineering company will carry out ....

iComplii