I propose some following options for rutile-chlorination (RC) (t=900C) and titanium-oxide (TO) (t=400-500C):
1. remove flue gas from RC recipy and produce TO in chemical reactor (most adequate i think);
2. use titanium tetrachloride in barrels in both recipies + croll process titanium (not so nice, but acceptable);
3. use chemical reactors in both recipies (easy, but not realistic);