acid slag

acid slag

[′as·əd ‚slag]
(metallurgy)
Furnace slag in which there is more silica and silicates than lime and magnesia.
References in periodicals archive ?
One can see from the data of Table 4 that carrying out of reduction process under acid slag is characterized by high degree of phosphorus and sulfur transition into the metal.
For determining conditions of the most complete transition of chrome from ferronickel into acid slag we shall write down reactions of silicon and chrome oxidizing in the following form:
Larger foundries showed a growing preference for acid slag cupola melting, while the use of direct arc and channel furnaces as primary melting units declined.
produces a slag high in silica from the beginning to maintain an acid slag throughout the heat.
In order to maintain an acid slag (50% minimum silica), there must be at least 15-25 lb of sand/ton of iron coming along with the sprue.
All of the acid slag is tapped into the pouring ladle for its insulating value and ease of removal.
Because acid slags cannot dissolve significant amounts of S, the higher basicity produced in studies A and B was not reflected in lower S levels.
Acid refractories are not as stable as basic refractories, and acid slags that are produced in such furnaces do not offer the same opportunities for producing clean steel.