On the impact of grinding conditions in the flotation of semi-soluble salt-type mineral-containing ores – driven by surface or particle geometry effects?

Autor: Pereira, L., Kupka, N., Hoang, D. H., Michaux, B., Saquran, S. S. S., Ebert, D., Rudolph, M.

Publikováno v: International Journal of Mining Science and Technology (2023)

Grinding and flotation operations are often studied independently, despite the well-established grinding influence on flotation performance. At most, this influence is studied with microflotation of pure minerals, which hinders a thorough evaluation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______4577::f0b19ff28c2063f9bbf9709b5f857806
https://www.hzdr.de/publications/Publ-35941-1

A contribution to exploring the importance of surface air nucleation in froth flotation – The effects of dissolved air on graphite flotation

Autor: Xu, M., Li, C., Zhang, H., Kupka, N., Peuker, U. A., Rudolph, M.

Publikováno v: Colloids and Surfaces A: Physicochemical and Engineering Aspects 633(2022), 127866

The formation of surface microbubbles induced by air nucleation on graphite surfaces and the air diffusion process in oversaturated water play important roles in increasing the recovery of graphite and other valuable minerals in flotation. A microsco

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______4577::3847d52bf8eaa31c52173a5a00c1a972
https://www.hzdr.de/publications/Publ-33855-1

Recovery of REEs as co-products from a Vietnamese sedimentary phosphate ore by flotation - Impact of milling conditions

Autor: Hoang, D. H., Balinski, A., Kupka, N., Möckel, R., Kelly, N., Rudolph, M.

Publikováno v: Advances in Metallurgy and Materials Engineering-COM2021, 17.-19.08.2021, Quebec, CanadaProceedings of the 60th Conference of Metallurgists 2021, Canada, 978-1-926872-53-7

Vietnamese phosphate deposits are of marine sedimentary origin and one of the largest phosphate rock deposits of Southeast Asia. Lao Cai phosphate reserves have been estimated at about 526 million tonnes with hypothetical reserves of about 2.6 billio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______4577::3698fc424bbf995cfeee01f566428f99
https://www.hzdr.de/publications/Publ-33678-1

The Potential Role of Colloidal Silica as a Depressant in Scheelite Flotation

Autor: Kupka, N., Babel, B. M., Rudolph, M.

Publikováno v: Minerals, Vol 10, Iss 2, p 144 (2020)
Minerals 10(2020)2, 144

The main challenge in scheelite flotation lies in the contamination of the concentrate by other calcium-bearing minerals, mainly calcite. To remedy this problem, sodium silicate is frequently used as a depressant. According to the literature, one hyp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2f5387f97ee996cee06e9b6da63efb3f
https://www.mdpi.com/2075-163X/10/2/144

Acidified water glass in the selective flotation of scheelite from calcite, Part I: performance and impact of the acid type

Autor: Kupka, N., Möckel, R., Rudolph, M.

Publikováno v: Physicochemical Problems of Mineral Processing 56(2020)2, 238-251

To improve the performance of sodium silicate in scheelite flotation and allow the selective separation of scheelite from other semi-soluble salt-type minerals such as calcite, three acids, sulfuric, oxalic and for the first time hydrochloric are use

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______4577::4ab5b71b0843f4029b076eae1e041a95
https://www.hzdr.de/publications/Publ-30805-1