The collectors performance was evaluated at three concentrations:
1 10
close to 4, 6, 8 and 10.
Each test was fed with 270 g of iron ore, 30 g of kaolin and 700 mL
of water. The gas flow rate was 6 NL/min. A strong agitation stage
(2 min) was used to homogenise the feed prior to the reagents conditioning
(5 min for depressant and 2 min for collector). These
experiments were done at pH values close to 7 and 10. Bench scale