basic slag

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basic slag

a furnace slag produced in steel-making, containing large amounts of calcium phosphate: used as a fertilizer
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Basic Slag


(or Thomas slag), an alkaline phosphorus fertilizer. It is a by-product of the production of steel from phosphorusrich pig iron (see). Basic slag is a dark powder that is insoluble in water and does not cake. It contains not less than 14 percent P205 in citrate-soluble form. Basic slag is most suitable for use on acid soils as a base fertilizer. It is used in the Federal Republic of Germany, France, and Great Britain. It is not produced in the USSR.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

basic slag

[′bā·sik ′slag]
A slag resulting from the steelmaking process; rich in phosphorus, it is ground and used as a nutrient in grasslands.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Dewes HF, McLeay LM, Harfoot CG (1995) Fly ash, basic slag and Glenbrook slag toxicity in cattle.
Unlike ACIPCO, who perfected the basic slag cupola, Clow, according to Kirgin, was the first company to continually externally desulfurize ductile iron to prepare it for Mg treatment, which is the predominant method used for cupola-melted iron today.
* Pure Mg treatment produces a basic slag, and thus cleaner treated iron.
Late-1970s - Acid-slag cupola practices plus external desulfurization with Ca[C.sub.2] begin to replace basic slag cupolas.
Basic slag practice to achieve a low-sulfur (S), high-carbon (C) base metal was impractical, since we had to melt GI out of the same unit.
By 1968, the basic slag cupola used the continuous porous plug process.
The demand for acidic refractories is increasing due to their low cost and ability to resist slag erosion at a high temperature, whereas the demand for neutral refractories is also expected an increase as they are resistant to chemical reactions of acids or basic slags.

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