Between 2004 and 2009, RUSAL implemented a large-scale project to modernise the Krasnoyarsk
smelter, one of the world’s largest aluminium-producing facilities. The smelter renovation caused
a considerable increase in its production efficiency and a reduction in emissions: hydrogen
fluoride was reduced by 1.5 times, tar substances by 2.7 times, and benzopyrene by 2.5 times. The
investments into the project exceeded USD 300 million.
The second stage of the Krasnoyarsk smelter modernisation is now underway. The smelter’s
capacities are being gradually converted to the «Clean Soederberg» technology that will ensure a
further cut in emissions. One of the smelter’s potrooms has already been fully converted to “Clean
Soederberg”.
|
Converting all the smelter’s capacities to
the «dry» anode technology. The project
investments exceeded USD 29 million.
|
Decrease in hazardous emissions and
improvement of working conditions in
potrooms.
Significant reduction in energy and raw
materials consumption that resulted in a cut of
operational costs
|
|
Constructing and deploying a dry gas scrubbing
system
|
Maintaining the maximum technically
achievable fluorides capture level of up to 99%.
|
|
Equipping all the smelter’s potrooms with
automated alumina point feeders. The project cost
30 million dollars.
|
Reduction in emissions, increased
environmental and labour safety inside the
potrooms, higher level of automation.
The automated alumina point feeders drive
down greenhouse gas emissions through cutting
the frequency of anode effects.
The measurements taken at the smelter
in September 2007 by the International
Aluminium Institute showed an 80% reduction
in greenhouse gas emissions against the levels recorded in 1990.
|
|
Construction and installation of wastewater and
effluents tertiary treatment plant wrapped up
the 5-year modernisation programme, aimed at
the renovation of the smelter's water recycling
system. The investments into the treatment plant
construction exceeded 102 million rubles.
|
The facility installation ensures a full
compliance of the treated water with all the
applicable sanitary regulations. Besides, the
implementation of this project cuts down the
amount of fresh water taken from the Yenisey
River through boosting the share of recycled
and reusable water.
|
|
Further development of the smelter’s buffer zone
|
Improved environmental conditions in the area
surrounding the smelter site
|