Reduction of Emission from Aluminium Industries and Cleaner Technology

Gorai, Bipra and Jana, R K and Premchand, (2002) Reduction of Emission from Aluminium Industries and Cleaner Technology. In: Clean Technologies for Metallurgical Industries (EWM-2002), 24-25 January, 2002, National Metallurgical Laboratory (CSIR), Jamshedpur.



Aluminium metal is produced by electrolytic reduction of alumina in cells lined with carbon blocks. During the process of smelting different gaseous emissions like PFC (per flurocarbon).HF PAH (poly aromatic hydrocarbon), CO2, SO„ particulate matters etc. occur in to the atmosphere. The concentration of emission from a cell depends upon the type of cell, bath chemistry, scrubbing system and gas cleaning equipment used. These emissions cause severe environmental damages such as global warming and disease like fluorosis, cancer, asthma, emphysema, bronchitis etc. Through the development of newer technologies like, intro-duction of prebake technology, use of non-consumable (inert) anode, use of computer controlled and point feeding of alumina to the cell to control the frequency and duration of anode effects, use of low carbon pitch to replace tar, use of pollution monitoring and control equipment etc., there is a significant reduction in the emission levels. This paper deals with the factors infl-uencing the generation of these emissions and its reduction through the development of various cleaner technologies. Use of pollution control equipment and other remedial mea-sures to minimise the environmental pollution are also discussed.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Cleaner technology; aluminium; smelter; emissions; remedial measures
Divisions:Metal Extraction and Forming
ID Code:4541
Deposited By:Sahu A K
Deposited On:04 Jan 2012 16:21
Last Modified:04 Jan 2012 16:21
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