Slags, ferrous metal, blast furnace Chemical Properties

Boiling point:

2000℃[at 101 325 Pa]

Density 

3[at 20℃]

vapor pressure 

0Pa at 20℃

Water Solubility 

10μg/L at 20℃

LogP

-9 at 20℃

EPA Substance Registry System

Slags, ferrous metal, blast furnace (65996-69-2)

Slags, ferrous metal, blast furnace Usage And Synthesis

Definition

The fused substance formed by the action of a flux upon the gangue of the iron-bearing materials charged to a blast furnace and upon the oxidized impurities in the iron produced. Depending upon the particular blast furnace operation, the slag is composed primarily of sulfur and oxides of aluminum, calcium, magnesium, and silicon.

Flammability and Explosibility

Non flammable

Agricultural Uses

Blast furnace slag, a by-product in the manufacture of pig iron from ores, contains a significant amount of phosphorus. This phosphorus is removed by adding lime or calcium carbonate to the converter. The phosphorus oxide formed combines with calcium oxide and silica to form a slag on top of the molten iron. The slag is then removed, cooled and powdered and is used for liming acid soils. Depending on the process of steel manufacture, the slag is called Bessemer basic slag or open-hearth basic slag.