XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 739
• Future evaluations are required to optimize the dos-
age to establish its economic benefits while achieving
the dewatered characteristic required by the end user.
Gold Tailings
• TNS technology has been proven, using two differ-
ent gold tailings materials, to consistently reduce fil-
tration time and improve the quality of the produced
cake. Sample #1, demonstrates that this technology
effectively eliminates thixotropy without requiring
the blowing stage, thereby reducing both CAPEX
and OPEX.
Iron Tailings
• The TNS ™ technology successfully dewatered iron
ore slimes pressure filtration. This additive is a robust
material that can be used at different dosages and still
effectively dewaters these challenging slimes.
• The pressure filtration results indicate that this tech-
nology is capable of handling up to two orders of
magnitude higher solids loading rate compared to
conventional technology.
REFERENCES
Adiansyah S., Rosano M., Vink S., Keir G. A framework
for a sustainable approach to mine tailings manage-
ment: disposal strategies, J Clean Prod, 108 (2015),
pp. 1050–1062, doi: 10.1016/j.jclepro.2015.07.139.
Barrera, S. Arredondo, M. Madariaga, P. Scognamillo, C.
Tailings management a simple way to increase water
reclaim. In Proceedings of the 11th International
Conference on Tailings and Mine Waste, Vail, CO, USA,
10–13 October 2004 A.A. Balkema: Rotterdam, The
Netherlands, 2004 pp. 39–44.
Boger D.V. Rheology of slurries and environmental impacts
in the mining industry. Annu Rev Chem Biomol Eng, 4
(2013), pp. 239–257.
Bowker L., Chambers D. In the dark shadow of the super-
cycle tailings failure risk &public liability reach all
time highs Environments, 4 (2017), p. 75.
Figure 10. Iron Ore Slime Tailings—pressure filtration filter cake
Table 4. Iron Ore Slime Tailings -Pressure Filtration
Parameters Units Without TNS™
With
TNS™ 1
With
TNS™ 2
With
TNS™ 3
Feed Moisture1 wt. %60.8 68.2 68.1 67.7
Form Time min Discontinued after 35 minutes 5.5 6.5 5.5
Air Blow Drying Time min none none none 1
Form Step End Moisture wt.% Not measured 23.2 22.8 23.6
Air Blow Step End Moisture wt.% Not measured Not measured Not measured 20.92
Average Filtration Rate (K/h)/m2 none 302 334 305
Observation — Slow, no cake produced Competent cake Competent cake Competent cake
Form pressure of 1,500 kPa
1. After reagent addition
2. Air by-passed at cake edge because of cake shrinkage
• Future evaluations are required to optimize the dos-
age to establish its economic benefits while achieving
the dewatered characteristic required by the end user.
Gold Tailings
• TNS technology has been proven, using two differ-
ent gold tailings materials, to consistently reduce fil-
tration time and improve the quality of the produced
cake. Sample #1, demonstrates that this technology
effectively eliminates thixotropy without requiring
the blowing stage, thereby reducing both CAPEX
and OPEX.
Iron Tailings
• The TNS ™ technology successfully dewatered iron
ore slimes pressure filtration. This additive is a robust
material that can be used at different dosages and still
effectively dewaters these challenging slimes.
• The pressure filtration results indicate that this tech-
nology is capable of handling up to two orders of
magnitude higher solids loading rate compared to
conventional technology.
REFERENCES
Adiansyah S., Rosano M., Vink S., Keir G. A framework
for a sustainable approach to mine tailings manage-
ment: disposal strategies, J Clean Prod, 108 (2015),
pp. 1050–1062, doi: 10.1016/j.jclepro.2015.07.139.
Barrera, S. Arredondo, M. Madariaga, P. Scognamillo, C.
Tailings management a simple way to increase water
reclaim. In Proceedings of the 11th International
Conference on Tailings and Mine Waste, Vail, CO, USA,
10–13 October 2004 A.A. Balkema: Rotterdam, The
Netherlands, 2004 pp. 39–44.
Boger D.V. Rheology of slurries and environmental impacts
in the mining industry. Annu Rev Chem Biomol Eng, 4
(2013), pp. 239–257.
Bowker L., Chambers D. In the dark shadow of the super-
cycle tailings failure risk &public liability reach all
time highs Environments, 4 (2017), p. 75.
Figure 10. Iron Ore Slime Tailings—pressure filtration filter cake
Table 4. Iron Ore Slime Tailings -Pressure Filtration
Parameters Units Without TNS™
With
TNS™ 1
With
TNS™ 2
With
TNS™ 3
Feed Moisture1 wt. %60.8 68.2 68.1 67.7
Form Time min Discontinued after 35 minutes 5.5 6.5 5.5
Air Blow Drying Time min none none none 1
Form Step End Moisture wt.% Not measured 23.2 22.8 23.6
Air Blow Step End Moisture wt.% Not measured Not measured Not measured 20.92
Average Filtration Rate (K/h)/m2 none 302 334 305
Observation — Slow, no cake produced Competent cake Competent cake Competent cake
Form pressure of 1,500 kPa
1. After reagent addition
2. Air by-passed at cake edge because of cake shrinkage