Chat to slags
Slag from steel mills in ferrous smelting, on the other hand, is designed to minimize iron loss and so mainly contains oxides of calcium, silicon, magnesium, and aluminium.
Any sandy component or quartz component of the original ore automatically carries through the smelting process as silicon dioxide.
Ground granulated slag reacts with water to produce cementitious properties.
Concrete containing ground granulated slag develops strength over a longer period, leading to reduced permeability and better durability.
This process causes several chemical reactions to take place within the slag, and gives the material its cementitious properties.
The water carries the slag in its slurry format to a large agitation tank, from where it is pumped along a piping system into a number of gravel based filter beds.
During the early 20th century, iron ore slag was also ground to a powder and used to make agate glass, also known as slag glass.
As for his long-term future at the club, one wonders how he can continue there.
Ferrous and non-ferrous smelting processes produce different slags.
The smelting of copper and lead in non-ferrous smelting, for instance, is designed to remove the iron and silica that often occurs with those ores, and separates them as iron-silicate-based slags.
Since the unit volume of Portland cement is reduced, this concrete is less vulnerable to alkali-silica and sulfate attack.
This previously unwanted recycled product is used in the manufacture of high-performance concretes, especially those used in the construction of bridges and coastal features, where its low permeability and greater resistance to chlorides and sulfates can help to reduce corrosive action and deterioration of the structure.
In nature, iron, copper, lead, nickel and other metals are found in impure states called ores, often oxidized and mixed in with silicates of other metals.