Technical Article Metric Chlorine Cost ($/lb.)


Chlorine Usage (per lb. of Al) Chlorine $/day


Ave Cycle Time (mins) Ave Total Cycles/Day Ave Repeat Cycles


Ave Approved Melts/Day Success rate


Total Degas Time (mins per day) Melt (lbs./day)


Tibor% Melt/lbs. per lb Al COVERAL MTS 1582 Grain Refining Cost/Day Argon Spend/Melt


Incumbent $3.20


0.15% $28.80 30 8 2 6


75% 338


6000 .25% 0


$104.55 $11.05


Table 5: Tabularized Dataset of Incumbent and New Procedure Continued from pg 29


• Not a single failed specific gravity test since implementation! 25% of the treatments with the incumbent process would fail specific gravity testing allowing for 2 more melts treated and poured per day.


• A 69% reduction in degassing time average per day


• 30% increase in metal poured per day


• Effective elimination of hexachloroethane pills (without performance implications) leading to improved safety and environment


Saving Argon


Chlorine Pills Grain Refining Baffle Plate


Graphite Shafts/rotors Sum annualized savings Payback (yrs)


Payback (months) Table 6: Payback Calculation Table Payback Calculation Component Savings


$8,462.38 $7,488.00 $21,949.20 -$1,500.00 -$1,459.90 $34,939.68 1.37


16.50 MTS Process


0 0 0


13 8 0 8


100% 104


7800 0


0.06% $20.13 $6.40


Comments


N/A N/A


100% reduction 56.67% reduction N/A N/A N/A N/A


69.2% reduction in degassing time 30.00% increase metal poured per day N/A N/A


$84.42 or 80.7% reduction in daily spend


30 ❘ May 2020 ®


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