What is claimed is: 1. A process for the recovery of highgrade synthetic rutile from lowgrade ores, which comprises: (a) performing a first leaching reaction by contacting the lowgrade ores with 3540% hydrochloric acid at an acid to ore ratio of between, and at a temperature of 6070° C. to obtain a slurry; (b) filtering a filter cake from the slurry obtained in step (a); (c ...