ARCELOR MITTAL STEEL EXTRACTING DESIGN PROJECT

Designed by: Joe Swain, Kariem Alshehri, Shiv Patel, Mike Wilson, Kevin Cheung

Arcelor Mittal Background Largest Steel Producing Company in the

World Steels used for automotive purposes

have great quality propertiesAllows for easy recycling of elements

Heading a charge to try to increase the longevity of the iron ore supply

Problem Statement

Separate high alloyed steel from scrap metalTo not cause off chemistry steelTo decrease alloy costs

We need to be more efficient in recycling because the finite quantity of iron ore.

Mission Statement

Separate advanced high strength steel (AHSS) from scrap autos.

Use mix of AHSS and low carbon aluminum-killed (LCAK) scrap to make LCAK heat.

Utilize AHSS scrap to make line pipe heat.

Calculate additional alloys needed.

Junkyards Now

http://www.schnitzersteel.com/metals_recycling_process.aspx

© 2012 Schnitzer Steel Industries, Inc.

Design Implementation

Similar to steel separation processes today, but making it more efficientWind Turbine to remove fabrics and plasticsRotating Disk Electromagnet to separate

high and low alloysScanner Tunnel to Detect amounts of

various elementsDual Conveyors to simultaneously package

specified loads

Rollers and Wind Turbine

Rollers obtain spikes that will crush the large parts into smaller pieces Continuous movement to make process

quicker Wind Turbine acts a vacuum to suction

out the lightweight fabrics and plasticsLarge tube will take these to different

storage

Rotating Disk

The disk will continuously rotate hovering above the conveyor belt

Electromagnet is held in place above with a portion missing to allow material to drop

As material passes it will be lifted, and dropped onto a new conveyor

Only high alloy steels will be transferred here

Scanner Tunnel

Scanner will have a computer hard drive that detects amounts of different elements in the materials

Computer will then determine which conveyor the material will go to based on the amount of each element already present in the package

Controls the movement of the material via the two conveyors

BOF – Order of Reactions – Ellingham Diagram

Temperature

Ene

rgy

4Al + 3O2 2Al2

O3

2Ca + O 2 2CaO

Si + O2 SiO2

2Mn + O2 2MnO4Cr + 3O2

2Cr2O3

C + O2 CO2

2C + O2 CO

2

2Fe + O2 FeO2

Si: All

Al: All

Ca: All

Mn: 1/3

Cr: 1/2

Load (Heat Size = 440,000 lbs)

Amounts Present in Pig Iron

Carbon ( C ) 3.50%

Manganese (Mn) 0.50%

Chromium (Cr) 0.00%

Aluminum (Al) 0.00%

Columbium (Cb) 0.00%

AHSS Weight Percentage Requirements

Carbon ( C ) 0.17%

Manganese (Mn) 1.50%

Chromium (Cr) 0.20%

Aluminum (Al) 1.20%

Columbium (Cb) 0.02%

Load (Heat Size = 440,000 lbs)

Amount to Add-In % Weight Recovery Factor Final Weight

Carbon ( C ) 0%0 lbs 100% 0 lb

Manganese (Mn) 1%4400 lb 33%6666.67 lb

Chromium (Cr) 0.20% 880 lb 50%1760lb

Aluminum (Al) 1.20% 5280 lb 100% 5280 lb

Columbium (Cb) 0.02% 88 lb 100% 88 lb

Prototype