XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 1961
showing a 56% increase in mass recovery for iron con-
centrate contents of 64% and 62%, respectively. In other
words, a significant gain in mass recovery for practically the
same iron content.
Based on these data, the decision was made to proceed
with tests at the pilot scale, this time comparing heights of
220mm against 440mm. The sample used contained 40%
of particles smaller than 10µm and 41% iron in the feed, as
previously mentioned.
The results of mass recovery and iron contents in the
concentrate can be seen in Figure 5 and Figure 6. Notably,
there is a significant gain in mass recovery when comparing
the two matrix heights, for the test with 40% solids in
the feed, an increase of approximately 2.5 times can be
observed.
In addition to the increased mass recovery, it is also
evident that the iron contents in the concentrate did not
vary considerably, with the largest difference between them
being 2 percentage points. This indicates an increase in the
recovery of iron particles.
These results confirm that increasing the matrix height
enables the recovery of ultrafine iron particles that were
previously discarded as tailings. In other words, particles
Figure 5. Mass Recovery of tests with different percentages of solids
Figure 6. Iron content in the concentrate of tests with different percentages of solids
showing a 56% increase in mass recovery for iron con-
centrate contents of 64% and 62%, respectively. In other
words, a significant gain in mass recovery for practically the
same iron content.
Based on these data, the decision was made to proceed
with tests at the pilot scale, this time comparing heights of
220mm against 440mm. The sample used contained 40%
of particles smaller than 10µm and 41% iron in the feed, as
previously mentioned.
The results of mass recovery and iron contents in the
concentrate can be seen in Figure 5 and Figure 6. Notably,
there is a significant gain in mass recovery when comparing
the two matrix heights, for the test with 40% solids in
the feed, an increase of approximately 2.5 times can be
observed.
In addition to the increased mass recovery, it is also
evident that the iron contents in the concentrate did not
vary considerably, with the largest difference between them
being 2 percentage points. This indicates an increase in the
recovery of iron particles.
These results confirm that increasing the matrix height
enables the recovery of ultrafine iron particles that were
previously discarded as tailings. In other words, particles
Figure 5. Mass Recovery of tests with different percentages of solids
Figure 6. Iron content in the concentrate of tests with different percentages of solids