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 properties Allows 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 metal To not cause off chemistry steel To 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  cycling_process.aspx cycling_process.aspx  © 2012 Schnitzer Steel Industries, Inc.

Design Implementation  Similar to steel separation processes today, but making it more efficient Wind Turbine to remove fabrics and plastics Rotating Disk Electromagnet to separate high and low alloys Scanner Tunnel to Detect amounts of various elements Dual 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 plastics Large 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 Energy 4Al + 3O 2  2Al 2 O 3 2Ca + O 2  2CaO Si + O 2  SiO 2 2Mn + O 2  2MnO 4Cr + 3O 2  2Cr 2 O 3 C + O 2  CO 2 2C + O 2  CO 2 2Fe + O 2  FeO 2 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%WeightRecovery FactorFinal Weight Carbon ( C )0%0 lbs100%0 lb Manganese (Mn)1%4400 lb33% lb Chromium (Cr)0.20%880 lb50%1760lb Aluminum (Al)1.20%5280 lb100%5280 lb Columbium (Cb)0.02%88 lb100%88 lb

Prototype