The Collaborative International Dictionary of English v.0.48:

Scorify \Sco"ri*fy\, v. t. [imp. & p. p. Scorified; p. pr. &
   vb. n. Scorifying.] [Scoria + -fy: cf. F. scorifier.]
   (Chem.)
   To reduce to scoria or slag; specifically, in assaying, to
   fuse so as to separate the gangue and earthy material, with
   borax, lead, soda, etc., thus leaving the gold and silver in
   a lead button; hence, to separate from, or by means of, a
   slag.
   [1913 Webster]