Prasad, Sanjay (2008) Recovery of Chromium from Stainless Steel dust. In: The 23rd International Conference on Solid Waste Technology and Management, March 30 - April 2, 2008, Philadelphia, U.S.A..
This investigation deals with the recovery of chromium as sodium chromate of 99.5% purity from stainless steel dust containing 7.72% chromium obtained from stainless steel processing plants. The stainless steel dust mostly contained iron in oxide form along with chromium, nickel (1.7 1%) and manganese (3.5 5%). The steel dust was roas-ted with soda ash followed by water leaching to recover the major constituent chromium. It was found that the roasting at 1073 K in 90 minutes resulted in maximum (95%) chromium recovery. Kinetics of sodium chromate formation followed topochemical model involving chemical reactions at the surface with activation energy of 22 kJmol" 1 . TG/DTA, XRD phase identification and SEM-EDX confirmed the exper-imental observation and the mode of reaction.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||stainless steel dust, roasting, sodium chromate, solid waste|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Sahu A K|
|Deposited On:||04 Jul 2012 16:45|
|Last Modified:||04 Jul 2012 16:45|
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