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slag
(redirected from basic slag)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.03 sec.
slag
vitreous residue after removal of metal in a smelting process.

basic slag
a by-product of the smelting industry, basic slag is used as a fertilizer. Animals pastured on recently heavily dressed fields may be affected by colic, diarrhea and posterior paresis. The specific cause of the poisoning is not known.


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Slag Composition--Maintaining low levels of ferrous oxide (FeO) and MnO in a slag is important to produce minimum S levels in the iron by creating neutral or basic slags.
Primary Ductile Iron Melting & Holding (by % of foundries) Melting Large Foundries Small Foundries Cupola 1978 1988 1998 1978 1988 1998 Acid Slag 26 42 20 20 2 6 Basic Slag 13 15 3 5 0 2 Neutral Slag NA 4 7 NA 2 0 Coreless 45 38 62 44 84 83 Arc 15 4 1 13 6 0 Channel 15 4 12 22 22 8 Other 0 0 0 0 2 3 Holding Channel 30 46 43 7 24 7 Coreless 6 15 11 5 10 3 Arc 9 8 0 2 0 0 Forehearth NA 15 5 NA 0 1 Other 9 8 5 5 2 2 Table 2.
The result is a more basic slag, which promotes faster wear of the silica refractory lining.
 
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