How to Use slag in a Sentence

slag

noun
  • Many fly ash or slag substitutes turn concrete a dark, muddy grey.
    — Mrigakshi Dixit, Interesting Engineering, 30 June 2026
  • Arney said the small explosion was due to water mixing with the hot slag.
    — Karen Caffarini, chicagotribune.com, 1 Dec. 2021
  • When the smelters smashed the furnace and the molten slag flowed out, what remained were precious lumps of copper.
    — Matti Friedman, Smithsonian Magazine, 17 Nov. 2021
  • Strewn about were piles of black slag, fist-size chunks left over from extracting copper from ore in furnaces.
    — Matti Friedman, Smithsonian Magazine, 17 Nov. 2021
  • But in Cottonwood the dream of recycling slag is still alive.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • Five other locations had that same unique slag signature, too.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • The beacon’s red light is the only touch of color in the gallery, but its glow amid the hillocks of slag denotes not life but danger.
    — Mark Jenkins, Washington Post, 30 Sep. 2022
  • Industrial wastes like fly ash and blast furnace slag have replaced cement in concrete at times.
    — Carolyn Barber, Fortune, 13 July 2023
  • During the cleaning, one of the slag accumulations came loose, sprayed the area with molten slag and killed five people.
    — Garfield Hylton, Orlando Sentinel, 19 Aug. 2022
  • The Montana state legislature banned the use of slag on roads shortly after.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • Dial worked in the steel mills of Birmingham, Alabama, and would sculpt the slag from the mills.
    — Lisa Wong MacAbasco, Vogue, 17 Jan. 2023
  • In place of cement, CarbiCrete makes use of a waste product—the slag left over from steel production.
    — Elizabeth Kolbert, The New Yorker, 21 Nov. 2022
  • That operation closed in late 2015, when the company used up the last of the slag.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • These are a few of the identities Cottonwood's slag pile has held since 1930.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • Convinced that her friend is not only a liar but also a total slag, Alicent lets Cole leave.
    — Josh St. Clair, Men's Health, 18 Sep. 2022
  • Carol handed me a piece of slag—black, glassy rock—that had come from one of the reactors after the extraction of key elements.
    — Matthew Hutson, The New Yorker, 24 Sep. 2024
  • Richards' doctor, Shaida Sina, who is aware of the slag pile, said it was likely caused by arsenic exposure.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • Four small metal pipes also were also in the path of the welding slag and other debris blown from the nozzle at high velocity with the gas.
    — Edmund H. Mahony, courant.com, 5 Jan. 2022
  • After the town’s smelter closed, the Department of Transportation started using the slag to de-ice roads.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • Instead, what had been one of Biden’s most persistent slags suddenly got shifted to Trump, who is just three years his junior.
    — Philip Elliott, TIME, 16 Oct. 2024
  • There are several types of coal ash, including fly ash, which is fine and powdery, bottom ash which is heavy and coarse, and boiler slag, which is melted bottom ash.
    — Isabelle Chapman, CNN, 7 Dec. 2021
  • As the carbon vapor cools on the chamber walls, much of it condenses into fullerenes, but rare fullertubes also form, sprinkled like gems in a mountain of slag.
    — James R. Riordon, Quanta Magazine, 20 Dec. 2022
  • In less than an hour, the furnace can process liquid steel at 3,000 degrees, with slag, or impurities, filtered out.
    — William Thornton | [email protected], al, 10 Dec. 2020
  • The original permit allowed the company to crush nonmetallic rock, but not copper ore slag which contains heavy metals.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • Cottonwood residents are concerned about black dust originating from a historic copper smelter slag pile.
    — Sarah Henry, AZCentral.com, 1 Mar. 2026
  • Others have replaced cement in concrete partly with construction and industrial waste, mining slag, and fly ash.
    — IEEE Spectrum, 8 May 2023
  • The octagonal shade is set with 16 panels in two colors of slag glass behind overlay filigree designs.
    — oregonlive, 3 Jan. 2023
  • That includes the collapse of a pile of alkali slag in east-central China in 2016 that washed away cars and fouled a major river.
    — Keith Bradsher, New York Times, 12 Apr. 2023
  • The team used a natural compound derived from the pomegranate tree to improve lithium recovery from smelting slags, a rocky byproduct that’s formed when ores are melted.
    — Prabhat Ranjan Mishra, Interesting Engineering, 26 Sep. 2025
  • Limelight then follows standard steelmaking techniques to create a slag of impurities at the top of the brew, allowing dense pure iron to flow out through a channel below.
    — Andrew Rosenblum, Popular Science, 26 Dec. 2024

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'slag.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Last Updated: