The Kandalaksha Aluminium Smelter, a part of SUAL Group, completed the second phase of its air emissions purification system. The company has invested USD 20 million in the project.
This powerful scrubbing equipment suppresses hazardous fluoride emissions by 99%. It is the largest and most modern air emissions purification facility for side-worked Soderberg potlines in Russia and the CIS. The aluminium reduction cell air emissions are purified with modern hydrogen fluoride absorption technology, called «dry scrubbing». Alumina is used as a absorbing agent.
KAZ-SUAL cut the atmospheric impact by more than one-half after the equipment was installed. Apart from the positive impact on the environment, dry scrubbing purification allows for reduced consumption of the main electrolytic raw materials.
The dry scrubbing system has been developed by OAO VAMI. The construction of the first phase started in 1999. In 2000, KAZ was incorporated into SUAL, and in 2002 the first phase of gas purification facilities was launched. Soon afterwards, KAZ began building the second phase.
Following a strategy to minimize pollutants in production, SUAL Group studied the feasibility of modernising smelters in 2005 — 2009 to reduce the atmospheric impact. As a result, the total environmental impact will be reduced by two-thirds.
‘The construction of modern gas purification facilities at Kandalaksha Aluminium Smelter follows our modernisation strategy,' SUAL Holding President Brian Gilbertson highlighted. ‘SUAL Group is committed to advancing our technologies and equipment so that they meet the highest international environmental and industrial standards.'
‘The completion of this project has allowed us to enhance environmental safety and cost efficiency,' said KAZ General Director Valery Shamshev. ‘Dry scrubbing technology significantly reduces emissions and the consumption of raw materials such as alumina and aluminium fluoride.'