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The dust produced from electric furnaces in steel making procedure is directly thrown out to the atmosphere via chimney.(a) True(b) FalseThe question was asked by my college director while I was bunking the class.This interesting question is from Melting of Steel and Stainless Steel in chapter Foundry Introduction & Materials of Casting-Forming-Welding II

Answer»

The CORRECT answer is (B) False

For explanation I would say: In steel making, dust is produced in the electric furnace during melting of steel. The produced dust is carried away in the off-gases which basically contains iron and some non-ferrous materials like ZINC and lead. So not only ENVIRONMENTAL considerations but also for the economic considerations, the dusts are collected and recovery of valuable materials is done.



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