3616 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
Locked-Cycle Flotation Tests
Based on Pb and Zn flotation tests, locked-cycle tests were
carried out using the flowsheet presented in Figure 5, and
the results are summarized in Table 4.
It can be seen from Table 4, the Pb concentrate has
a 65.67% recovery, 52.66% Pb grade and a zinc recovery
of 92.59%, and a 48.75% Zn grade were obtained from
the locked-cycle testing. Based on the ore head sample, the
calculated recovery of Pb and Zn was 63.47% and 88.73%
respectively with a tailings yield of 45.31% being gener-
ated. The Zn tailings now formed the feed for the barite
recovery testing.
BARITE RECOVERY TESTS
Tailings Discarding Tests with Reflux Classifier
The dominant component in the Pb-Zn flotation tailings is
barite. There is a strong case to recover barite. Beneficiation
flowsheet development tests have been performed on the
Zn flotation tailings for the purpose of barite recovery. In
the traditional processing technology, barite is generally
recovered by gravity separation or flotation. Due to the
negative impact of the barite flotation reagents scheme on
sulphide flotation and recycling of plant water, gravity sep-
aration is preferred for barite beneficiation. Gravity separa-
tion tests were carried out using Knelson gravity separator
and spiral chute, but no favourable metallurgical perfor-
mance was obtained.
a b
c
-200 0 200 400 600 800 1000 1200 1400 1600
95
96
97
98
99
100
Zinc rough flotation lime dosage
Zn
Fe
25
26
27
28
29
30
200 250 300 350
25
26
27
28
29
30
Copper sulfate dosage of Zn rough flotation (%)
grade
recivery
90
92
94
96
98
100
60 70 80 90 100 110 120
26
27
28
29
30
SBX dosage of Zn rough flotation (g/t)
grade
recovery
92
93
94
95
96
97
98
Figure 4. Results of Zn rougher flotation tests (a. lime dosage test, b. copper sulfate dosage test, c. collector dosage test)
Zn
recovery
(%)
Fe
recov
er y
(%)
Zn
grade
(%)
Zn
recov
er y
(%)
Zn
grade
(%)
Zn
recovery
(%)
Locked-Cycle Flotation Tests
Based on Pb and Zn flotation tests, locked-cycle tests were
carried out using the flowsheet presented in Figure 5, and
the results are summarized in Table 4.
It can be seen from Table 4, the Pb concentrate has
a 65.67% recovery, 52.66% Pb grade and a zinc recovery
of 92.59%, and a 48.75% Zn grade were obtained from
the locked-cycle testing. Based on the ore head sample, the
calculated recovery of Pb and Zn was 63.47% and 88.73%
respectively with a tailings yield of 45.31% being gener-
ated. The Zn tailings now formed the feed for the barite
recovery testing.
BARITE RECOVERY TESTS
Tailings Discarding Tests with Reflux Classifier
The dominant component in the Pb-Zn flotation tailings is
barite. There is a strong case to recover barite. Beneficiation
flowsheet development tests have been performed on the
Zn flotation tailings for the purpose of barite recovery. In
the traditional processing technology, barite is generally
recovered by gravity separation or flotation. Due to the
negative impact of the barite flotation reagents scheme on
sulphide flotation and recycling of plant water, gravity sep-
aration is preferred for barite beneficiation. Gravity separa-
tion tests were carried out using Knelson gravity separator
and spiral chute, but no favourable metallurgical perfor-
mance was obtained.
a b
c
-200 0 200 400 600 800 1000 1200 1400 1600
95
96
97
98
99
100
Zinc rough flotation lime dosage
Zn
Fe
25
26
27
28
29
30
200 250 300 350
25
26
27
28
29
30
Copper sulfate dosage of Zn rough flotation (%)
grade
recivery
90
92
94
96
98
100
60 70 80 90 100 110 120
26
27
28
29
30
SBX dosage of Zn rough flotation (g/t)
grade
recovery
92
93
94
95
96
97
98
Figure 4. Results of Zn rougher flotation tests (a. lime dosage test, b. copper sulfate dosage test, c. collector dosage test)
Zn
recovery
(%)
Fe
recov
er y
(%)
Zn
grade
(%)
Zn
recov
er y
(%)
Zn
grade
(%)
Zn
recovery
(%)