Production of titanium slag

摘要

A process for producing titanium slag which is low in radioactivity wherein molten titanium slag (22), produced by smelting ilmenite (10) in the presence of a reductant (14) in a DC electric arc furnace (12), is separated from molten iron (20), boron (16) in an amount which is less than 2,5% equivalent B2O3 of the slag (22) is blended with the molten slag which thereafter is allowed to cool to form a glassy phase (24) which contains the bulk of the radioactive elements of the slag before being crushed to particles (26) below about 1mm, whereafter the radioactive elements are leached to leave a titanium slag product (32) which is low in radioactivity.