Abstract: Upgrading of titanium values in a slag such as Sorelslag by working up the lag such as by alkali salt roasting to render the slag leachable in a plurality of leaching stages to recover titania (and other) values of 94 to 97 percent purity useful in a sulphate or a chloride process for producing titanium dioxide.
Type:
Grant
Filed:
October 21, 1975
Date of Patent:
July 26, 1977
Assignee:
Quebec Iron & Titanium Corporation-Fer et Titane due Quebec, Inc.