slag

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Copper, steel, aluminum and precious metals can be recovered, but rare-earth metals typically fuse with other byproducts in waste called slag.

From The Wall Street Journal • Jan. 23, 2026

Next to the sculpture are barrels of toxic "slag" leftover from the melting process.

From BBC • Oct. 19, 2025

It is a quiet town surrounded by World War One memorials and by the tall coal slag heaps that litter this stretch of northern France.

From BBC • Oct. 2, 2025

The Cambridge researchers found that used cement is an effective substitute for lime flux, which is used in steel recycling to remove impurities and normally ends up as a waste product known as slag.

From Science Daily • May 22, 2024

“All impurities burned out and ready for a glorious flux, and for that—more fire. And then either the slag heap or, perhaps what no one in the world ever quite gives up, perfection.”

From "East of Eden" by John Steinbeck