Talk:Pig iron

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We removed Arvin from the Ezzati's because the statement regarding "releasing the impurities into the atmosphere" since silicon dioxide has low volatility in normal atmospheres; that is, you cannot simply evaporate it. I'm not completely familiar with this process, but I believe the slag is removed by virtue of its lower density. —Preceding unsigned comment added by 128.111.193.92 (talk) 20:45, 29 February 2008 (UTC)

[edit] Pure iron -- in what sense?

Pig iron has become a desirable supplemental feed stock (...) since it is pure iron

Is it a kind of jargon? At the beginning it is stated that raw iron contains up to 3.5% carbon. Or, it merely should read "relatively pure"? saimhe 15:05, 18 June 2006 (UTC)

[edit] References, Historical speculation

This page needs a great deal more refernces in general. There should be a reference for the statement

"The Chinese were making pig iron by the later Zhou Dynasty (1122 BC - 256 BC). In Europe, the process did not become common until the 14th century."

as the time period for Chinese technology is often wildly speculated/exaggerated. —Preceding unsigned comment added by 139.57.60.28 (talk) 16:08, 6 April 2008 (UTC)