Production of synthetic rutile by continuous leaching

Details Production of synthetic rutile by continuous leaching Production of synthetic rutile by continuous leaching

2008-07-29

2008-07-29

Langel, Wayne (Department: 1793)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

C422S198000, C423S027000, C423S150100, C423S150300, C423S151000, C423S610000

Reexamination Certificate

active

07404937

ABSTRACT:
A reactor20has a plurality of tubular downcomers32, 34, 36, 38, 40and risers42, 44, 46, 48, 50, joined by sections86, 88in a continuous serpentine path the tubes dimensioned to provide substantially plug flow conditions for solid and liquid reagents fed into a first downcomer24with the products extracted from final riser52. The reactor20is designed for a desired residence time by the number, height and diameter of the tubes. The downcomers24, 32, 34, 36, 38, 40may include a bend to improve residence time and to thereby reduce the number of tubes required for a desired overall residence time. The reactor20can be used in a leaching operation for producing synthetic rutile, where a pre-treated feedstock including ilmenite, leueoxene or titania slag is leached with hot HCl.

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