Extraction Of Iron (Blast Furnace) (55x90cm)

The educational chart “Extraction of Iron (Blast Furnace)” (55×90 cm) visually explains the industrial extraction of iron from its ore using the blast furnace process, making it ideal for classroom or lab use.​

Core Chart Features and Content

Size and Format: 55×90 cm, typically in a multicolor, laminated format designed for repeated educational use.​

Main Diagram: Large cross-sectional schematic of a blast furnace, with labeled zones and components like the input hopper, tuyeres (air blast inlets), area for molten iron (“hot metal”), and slag tap.​

Key Input Materials: Shows how the three main raw materials—iron ore (often hematite, Fe₂O₃), coke (carbon), and limestone (CaCO₃)—are added at the top.​

Major Reactions:

Combustion: Coke burns in the hot air, creating carbon dioxide:

C

+

O

2

→

CO

2

C+O

2

→CO

2

Reduction to Carbon Monoxide: At higher temperatures, more coke turns CO₂ to CO:

CO

2

+

C

→

2

CO

CO

2

+C→2CO

Reduction of Iron Oxide:

Fe

2

O

3

+

3

CO

→

2

Fe

+

3

CO

2

Fe

2

O

3

+3CO→2Fe+3CO

2

Limestone Decomposition (removal of impurities):

CaCO

3

→

CaO

+

CO

2

CaCO

3

→CaO+CO

2

CaO

+

SiO

2

→

CaSiO

3

CaO+SiO

2

→CaSiO

3

(slag formation)

Process Flow: The iron melts and settles at the bottom; slag floats above and is removed separately.​

Educational Points: The chart usually highlights:

The role of coke as both fuel and reducing agent​

The function of limestone as a flux for removal of silica impurities​

The tapping points for both molten iron and slag​

Environmental considerations and by-products (e.g., slag reuse).​

Audience and Usage

Aimed at secondary and undergraduate-level chemistry and metallurgy topics.​

Helps students visualize the stepwise extraction and purification of iron.​

This chart serves as a comprehensive, visually organized teaching aid for understanding the blast furnace process in industrial iron extraction.