| US 7,404,937 B2 | ||
| Production of synthetic rutile by continuous leaching | ||
| John Winter, Sydney (Australia) | ||
| Assigned to Austpac Resources N.L., Sydney (Australia) | ||
| Appl. No. 10/451,075 PCT Filed Dec. 20, 2001, PCT No. PCT/AU01/01636 § 371(c)(1), (2), (4) Date Oct. 08, 2003, PCT Pub. No. WO02/49964, PCT Pub. Date Jun. 27, 2002. |
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| Claims priority of application No. PR2216 (AU), filed on Dec. 20, 2000. | ||
| Prior Publication US 2004/0076578 A1, Apr. 22, 2004 | ||
| Int. Cl. C01G 23/047 (2006.01); C01G 49/00 (2006.01) | ||
| U.S. Cl. 423—86 [422/196; 423/27; 423/150.1; 423/150.3; 423/151; 423/610] | 17 Claims |
| 1. A method for the production of synthetic rutile from feedstock including ilmenite, leucoxene or titania slag including
the steps of:
roasting the feedstock to enhance its leachability;
leaching said roasted feedstock in hot acid in a continuous manner in a substantially vertical co-current tubular reactor
under substantially plug flow conditions.
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