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Recovery of titanium from
beach sand by physical separation
Extensive experimentation has been carried out in order to optimise the
application of various separators, namely magnetic, electrostatic and
gravity separators, to the beneficiation of titanium bearing minerals from
the beach sand deposits of Sri Lanka. An improved flowsheet was established
for the recovery of titanium bearing minerals from the deposit, producing
commercial grade ilmenite concentrates (up to 63.7% TiO2) and
rutile grade concentrates (up to 93.4% TiO2). It was found that,
for fine particles, the titanium grade increased greatly when
titanium-bearing minerals were separated from the deposit by a Knelson
concentrator. The result of the mineralogical and chemical analysis studies
for the beach sand deposit revealed that, more than 99% of titanium content
of the deposit was contained in the particle size less than 355 microns. |
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