Dross is a mass of solid impurities floating on a molten metal. It appears usually on the melting of low-melting-point metals or alloys such as tin, lead, zinc or aluminium, or by oxidation of the metal(s). It can also consist of impurities such as paint leftovers. It can easily be skimmed off the surface before pouring the metal into a mold or casting flask.
With tin and lead the dross can also be removed by adding sodium hydroxide pellets, which dissolve the oxides and form a slag.
Dross, as a solid, is distinguished from slag, which is a liquid. Dross product is not entirely waste material; aluminium dross, for example, can be recycled and is used in secondary steelmaking for slag deoxidation.
16 Dec 11
Originally posted by adramforallAluminum dross is more interesting and far superior to the boring dross we find here on the GF. Where can I buy some?
Dross is a mass of solid impurities floating on a molten metal. It appears usually on the melting of low-melting-point metals or alloys such as tin, lead, zinc or aluminium, or by oxidation of the metal(s). It can also consist of impurities such as paint leftovers. It can easily be skimmed off the surface before pouring the metal into a mold or casting f ...[text shortened]... m dross, for example, can be recycled and is used in secondary steelmaking for slag deoxidation.
16 Dec 11
Originally posted by adramforallThank you Mr. Spock 😕
Dross is a mass of solid impurities floating on a molten metal. It appears usually on the melting of low-melting-point metals or alloys such as tin, lead, zinc or aluminium, or by oxidation of the metal(s). It can also consist of impurities such as paint leftovers. It can easily be skimmed off the surface before pouring the metal into a mold or casting f ...[text shortened]... m dross, for example, can be recycled and is used in secondary steelmaking for slag deoxidation.
16 Dec 11
Originally posted by adramforall😴
Dross is a mass of solid impurities floating on a molten metal. It appears usually on the melting of low-melting-point metals or alloys such as tin, lead, zinc or aluminium, or by oxidation of the metal(s). It can also consist of impurities such as paint leftovers. It can easily be skimmed off the surface before pouring the metal into a mold or casting f ...[text shortened]... m dross, for example, can be recycled and is used in secondary steelmaking for slag deoxidation.
20 Dec 11
Originally posted by adramforallWhat a suck-thread!~
Dross is a mass of solid impurities floating on a molten metal. It appears usually on the melting of low-melting-point metals or alloys such as tin, lead, zinc or aluminium, or by oxidation of the metal(s). It can also consist of impurities such as paint leftovers. It can easily be skimmed off the surface before pouring the metal into a mold or casting f ...[text shortened]... m dross, for example, can be recycled and is used in secondary steelmaking for slag deoxidation.