Posted in Manufacturing Process

How Pig Iron is Converted into Iron and Steel in Blast Furnace

Blast Furnace After mining, various kinds of iron ores are brought to the blast furnace which is the starting process for refining iron ores or mined ores and for the production of pig iron. Blast furnace was invented in 14th century. A typical blast furnace along with its various parts is shown in Fig. 1. It is large steel shell about 9 mt. in diameter which is lined with heat resistant bricks. It is set on the top of brick foundation. There are four major parts of blast furnace from bottom to top hearth, bosh, stack and top. The hearth…