Caption: Figure 2: Break point temperature for slag series R and basic slag
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
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