Earlier in this chapter I said that the slag, or aluminum oxide, from the thermit process was an almost useless product.
Thus it is really to be regarded as a compound of the two oxides, aluminum oxide and beryllium oxide.
It is virtually a compound of the two oxides, aluminum oxide and magnesium oxide.
When, finally, a precipitation of aluminum oxide takes place the liquid is almost free from iron.
|aluminum oxide |
Any of several forms of aluminum oxide used in aluminum production and in abrasives, refractories, ceramics, and electrical insulation. Alumina occurs naturally as the mineral corundum and, with minor traces of chromium and cobalt, as the minerals ruby and sapphire, respectively. In its hydrated form it also occurs as the rock bauxite. Also called aluminum oxide. Chemical formula: Al2O3.