Aluminum Dross (356 Aluminum)
Aluminum Dross (356 Aluminum)
(OP)
I was just wondering if it is normal for aluminum wheel suppliers to charge for dross and melt loss. I always thought manufacturers of Aluminum products could offset the cost of lost material by either recycling or selling their dross (but maybe this is not possible with AL 356?). Any information pertaining to this questions or dross in general would be greatly appreciated.





RE: Aluminum Dross (356 Aluminum)
However, some foundaries run 'cleaner' than others (reduced dross formation) by protective gas shielding, use of master alloys & faster analyses for less holding time at temperature while achieving alloy composition, etc.
There may not be a market for the dross; it can only be recovered by the few primary producers who electrolytically smelt purified alumina. The alloying elements Si, Fe, etc., are certainly undesirable in primary 99% ingot. Secondary or alloyed 90% ingot, as from recycled metal, normally sells at a lower price, by $20-$90/ton.
RE: Aluminum Dross (356 Aluminum)
Melt loss is generally built into cost price, at quotation stage. typically about 5-10%
RE: Aluminum Dross (356 Aluminum)
In this way you get a higher price due to that the remelting losses in form of dross / gases (from emulsion) decrease.
The price will be the same as for scrap.
One can achive up to 98% recovery in the meltingprocess like this.
Buy a briquetter
mats
RE: Aluminum Dross (356 Aluminum)
The other scenario where you buy the castings,is a lot simpler. Dross,melting loss etc are the problems of the foundry.You cannot ask for any of the details. You only need to look into cost,quality and delivery.