Alloying in the Cast House

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$Large Precast refractory shapes for furnace linings$

Good Cast House Practice• Add tablets to clean melt surface at 720 – 750 O c• Distribute evenly over melt surface, not in one area• Stir bottom of furnace well for 5-10 minutes• Be aware of “cold spots” when adding several elements together• AVOID:-DrossFinesOxidation [Mg, Sr …]IntermetallicsHeavyelementsMQW5 March 2012 18
Conclusions• There is a very wide choice of alloying additivesavailable in the market• The optimum alloying method is very cast housespecific• A detailed process evaluation is needed tooptimise choice of alloying product and casthouse process• With good practice, cast houses cansignificantly reduce the total cost of alloyingMQW5 March 2012 19
Page 1 and 2: DIOCESANE PEDAGOGISCHE BEGELEIDINGS
Page 3 and 4: Alloying in the Cast HouseMQW5 Marc
Page 5 and 6: Alternative Methods of AlloyingHigh
Page 7 and 8: Metal CleanlinessReference work on
Page 9 and 10: Mechanisms of Dissolution (simplifi
Page 11 and 12: Tablet DissolutionSwelled CompactsM
Page 13 and 14: Types of Alloying TabletsCompositio
Page 15 and 16: Alternative Types of Binder• Alum
Page 17: • Packaging- Foil, plastic, paper

Alloying in the Cast House

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